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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5,400 |
nucl-th/9901067
|
Abdulla Rakhimov
|
Ulf-G. Meissner (Forschungszentrum Julich, Institut fur
Kernphysik,Theorie, Julich, Germany), A. Rakhimov (Institute of Nuclear
Physics, Academy of Sciences, Usbekistan), U. Yakhshiev (Institute of Applied
Physics, Tashkent State University, Tashkent, Usbekistan)
|
The nucleon-nucleon interaction and properties of the nucleon in a
$\pi\rho\omega$ soliton model including a dilaton field with anomalous
dimension
|
14 pages, REVTeX, 3 figures (Ps), 83 kb
|
Phys.Lett. B473 (2000) 200-208
|
10.1016/S0370-2693(99)01495-1
| null |
nucl-th hep-ph
| null |
We investigate an extended chiral soliton model which includes $\pi, \rho,
\omega$ and $\sigma $ mesons as explicit degrees of freedom. The Lagrangian
incorporates chiral symmetry and broken scale invariance. A scalar-isoscalar
meson $\sigma$ is associated with a quarkonium dilaton field with a mass
$\msig\approx 550 $MeV. We show that the scalar field with anomalous dimension
slightly changes the static and electromagnetic properties of the nucleon. In
contrast, it plays a significant role in nucleon-nucleon dynamics and gives an
opportunity to describe well the two-nucleon interaction.
|
[{'version': 'v1', 'created': 'Sat, 23 Jan 1999 08:05:56 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Sep 1999 10:09:30 GMT'}]
|
2009-10-31
|
[array(['Meissner', 'Ulf-G.', '',
'Forschungszentrum Julich, Institut fur\n Kernphysik,Theorie, Julich, Germany'],
dtype=object)
array(['Rakhimov', 'A.', '',
'Institute of Nuclear\n Physics, Academy of Sciences, Usbekistan'],
dtype=object)
array(['Yakhshiev', 'U.', '',
'Institute of Applied\n Physics, Tashkent State University, Tashkent, Usbekistan'],
dtype=object) ]
|
5,401 |
1203.1646
|
Fr\'ed\'eric Vogt Mr.
|
Fr\'ed\'eric P.A. Vogt, Marc-Andr\'e Besel, Oliver Krause and Cornelis
P. Dullemond
|
Probing Interstellar Dust with Infrared Echoes from the Cas A Supernova
|
16 pages, 14 figures, accepted for publication in the Astrophysical
Journal
|
ApJ, 750, 155 (2012)
|
10.1088/0004-637X/750/2/155
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the analysis of an IRS 5-38 {\mu}m spectrum and MIPS photometric
measurements of an infrared echo near the Cassiopeia A supernova remnant
observed with the Spitzer Space Telescope. We have modeled the recorded echo
accounting for PAHs, quantum-heated carbon and silicate grains, as well as
thermal carbon and silicate particles. Using the fact that optical light echo
spectroscopy has established that Cas A originated from a type IIb supernova
explosion showing an optical spectrum remarkably similar to the prototypical
type IIb SN 1993J, we use the latter to construct template data input for our
simulations. We are then able to reproduce the recorded infrared echo spectrum
by combining the emission of dust heated by the UV burst produced at the shock
breakout after the core-collapse and dust heated by optical light emitted near
the visual maximum of the supernova light curve, where the UV burst and optical
light curve characteristics are based on SN 1993J. We find a mean density of
\sim680 H cm^{-3} for the echo region, with a size of a few light years across.
We also find evidence of dust processing in the form of a lack of small PAHs
with less than \sim300 carbon atoms, consistent with a scenario of PAHs
destruction by the UV burst via photodissociation at the estimated distance of
the echo region from Cas A. Furthermore, our simulations suggest that the weak
11 {\mu}m features of our recorded infrared echo spectrum are consistent with a
strong dehydrogenated state of the PAHs. This exploratory study highlights the
potential of investigating dust processing in the interstellar medium through
infrared echoes.
|
[{'version': 'v1', 'created': 'Wed, 7 Mar 2012 22:12:28 GMT'}]
|
2012-04-27
|
[array(['Vogt', 'Frédéric P. A.', ''], dtype=object)
array(['Besel', 'Marc-André', ''], dtype=object)
array(['Krause', 'Oliver', ''], dtype=object)
array(['Dullemond', 'Cornelis P.', ''], dtype=object)]
|
5,402 |
cond-mat/0602457
|
Virginie Simonet
|
Julien Robert (LLN), Virginie Simonet (LLN), Benjamin Canals (LLN),
Rafik Ballou (LLN), Pierre Bordet (LC), Pascal Lejay (CRTBT), Anne Stunault
(ILL)
|
Spin liquid correlations in Nd-langasite anisotropic Kagom\'e
antiferromagnet
|
4 pages
|
Physical Review Letters 96 (2006) 197205
|
10.1103/PhysRevLett.96.197205
| null |
cond-mat.str-el
| null |
Dynamical magnetic correlations in the geometrically frustrated
Nd$\_3$Ga$\_5$SiO$\_{14}$ compound were probed by inelastic neutron scattering
on a single crystal. A scattering signal with a ring shape distribution in
reciprocal space and unprecedented dispersive features was discovered.
Comparison with calculated static magnetic scattering from models of correlated
spins suggests that the observed phase is a spin liquid inherent to an
antiferromagnetic kagom\'e-like lattice of anisotropic Nd moments.
|
[{'version': 'v1', 'created': 'Mon, 20 Feb 2006 13:13:31 GMT'}
{'version': 'v2', 'created': 'Tue, 23 May 2006 19:52:19 GMT'}]
|
2007-05-23
|
[array(['Robert', 'Julien', '', 'LLN'], dtype=object)
array(['Simonet', 'Virginie', '', 'LLN'], dtype=object)
array(['Canals', 'Benjamin', '', 'LLN'], dtype=object)
array(['Ballou', 'Rafik', '', 'LLN'], dtype=object)
array(['Bordet', 'Pierre', '', 'LC'], dtype=object)
array(['Lejay', 'Pascal', '', 'CRTBT'], dtype=object)
array(['Stunault', 'Anne', '', 'ILL'], dtype=object)]
|
5,403 |
2203.01055
|
Chiara Amorino
|
Chiara Amorino, Arnaud Gloter
|
Estimation of the invariant density for discretely observed diffusion
processes: impact of the sampling and of the asynchronicity
| null | null | null | null |
math.ST stat.TH
|
http://creativecommons.org/licenses/by/4.0/
|
We aim at estimating in a non-parametric way the density $\pi$ of the
stationary distribution of a $d$-dimensional stochastic differential equation
$(X_t)_{t \in [0, T]}$, for $d \ge 2$, from the discrete observations of a
finite sample $X_{t_0}$, ... , $X_{t_n}$ with $0= t_0 < t_1 < ... < t_n =:
T_n$. We propose a kernel density estimator and we study its convergence rates
for the pointwise estimation of the invariant density under anisotropic
H\"older smoothness constraints. First of all, we find some conditions on the
discretization step that ensures it is possible to recover the same rates as if
the continuous trajectory of the process was available. Such rates are optimal
and new in the context of density estimator. Then we deal with the case where
such a condition on the discretization step is not satisfied, which we refer to
as intermediate regime. In this new regime we identify the convergence rate for
the estimation of the invariant density over anisotropic H\"older classes,
which is the same convergence rate as for the estimation of a probability
density belonging to an anisotropic H\"older class, associated to $n$ iid
random variables $X_1, ..., X_n$. After that we focus on the asynchronous case,
in which each component can be observed at different time points. Even if the
asynchronicity of the observations complexifies the computation of the variance
of the estimator, we are able to find conditions ensuring that this variance is
comparable to the one of the continuous case. We also exhibit that the non
synchronicity of the data introduces additional bias terms in the study of the
estimator.
|
[{'version': 'v1', 'created': 'Wed, 2 Mar 2022 12:02:01 GMT'}
{'version': 'v2', 'created': 'Tue, 6 Sep 2022 13:16:03 GMT'}
{'version': 'v3', 'created': 'Wed, 28 Dec 2022 10:34:10 GMT'}]
|
2022-12-29
|
[array(['Amorino', 'Chiara', ''], dtype=object)
array(['Gloter', 'Arnaud', ''], dtype=object)]
|
5,404 |
2211.16947
|
Janos Borst
|
Janos Borst, Thomas Wencker, Andreas Niekler
|
Using Text Classification with a Bayesian Correction for Estimating
Overreporting in the Creditor Reporting System on Climate Adaptation Finance
|
9+4 Pages, 3 figures, 4 tables
| null | null | null |
cs.CY cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Development funds are essential to finance climate change adaptation and are
thus an important part of international climate policy. % However, the absence
of a common reporting practice makes it difficult to assess the amount and
distribution of such funds. Research has questioned the credibility of reported
figures, indicating that adaptation financing is in fact lower than published
figures suggest. Projects claiming a greater relevance to climate change
adaptation than they target are referred to as "overreported". To estimate
realistic rates of overreporting in large data sets over times, we propose an
approach based on state-of-the-art text classification. To date, assessments of
credibility have relied on small, manually evaluated samples. We use such a
sample data set to train a classifier with an accuracy of $89.81\% \pm 0.83\%$
(tenfold cross-validation) and extrapolate to larger data sets to identify
overreporting. Additionally, we propose a method that incorporates evidence of
smaller, higher-quality data to correct predicted rates using Bayes' theorem.
This enables a comparison of different annotation schemes to estimate the
degree of overreporting in climate change adaptation. Our results support
findings that indicate extensive overreporting of $32.03\%$ with a credible
interval of $[19.81\%;48.34\%]$.
|
[{'version': 'v1', 'created': 'Wed, 30 Nov 2022 12:45:04 GMT'}]
|
2022-12-01
|
[array(['Borst', 'Janos', ''], dtype=object)
array(['Wencker', 'Thomas', ''], dtype=object)
array(['Niekler', 'Andreas', ''], dtype=object)]
|
5,405 |
cond-mat/0307151
|
Matthew Enjalran
|
Matthew Enjalran and Michel J.P. Gingras
|
Theory of paramagnetic scattering in highly frustrated magnets with
long-range dipole-dipole interactions: The case of the Tb2Ti2O7, pyrochlore
antiferromagnet
|
Revtex4, 18 pages, 3 eps figures (2 color figures). Change in title
and emphasis on Tb2Ti2O7 only. Spin-ice material removed, to appear in a
later publication
|
Physical Review B 70, 174426 (2004)
|
10.1103/PhysRevB.70.174426
| null |
cond-mat.stat-mech cond-mat.mtrl-sci
| null |
Highly frustrated antiferromagnets composed of magnetic rare-earth moments
are currently attracting much experimental and theoretical interest. Rare-earth
ions generally have small exchange interactions and large magnetic moments.
This makes it necessary to understand in detail the role of long-range magnetic
dipole-dipole interactions in these systems, in particular in the context of
spin-spin correlations that develop in the paramagnetic phase, but are often
unable to condense into a conventional long-range magnetic ordered phase. This
scenario is most dramatically emphasized in the frustrated pyrochlore
antiferromagnet material Tb2Ti207 which does not order down to 50 mK despite an
antiferromagnetic Curie-Weiss temperature Tcw ~ -20 K. In this paper we report
results from mean-field theory calculations of the paramagnetic elastic
neutron-scattering in highly frustrated magnetic systems with long-range
dipole-dipole interactions, focusing on the Tb2Ti207 system. Modeling Tb2Ti207
as an antiferromagnetic <111> Ising pyrochlore, we find that the mean-field
paramagnetic scattering is inconsistent with the experimentally observed
results. Through simple symmetry arguments we demonstrate that the observed
paramagnetic correlations in Tb2Ti207 are precluded from being generated by any
spin Hamiltonian that considers only Ising spins, but are qualitatively
consistent with Heisenberg-like moments. Explicit calculations of the
paramagnetic scattering pattern for both <111> Ising and Heisenberg models,
which include finite single-ion anisotropy, support these claims. We offer
suggestions for reconciling the need to restore spin isotropy with the Ising
like structure suggested by the single-ion properties of Tb3+.
|
[{'version': 'v1', 'created': 'Mon, 7 Jul 2003 21:06:24 GMT'}
{'version': 'v2', 'created': 'Fri, 12 Aug 2005 20:33:11 GMT'}]
|
2009-11-10
|
[array(['Enjalran', 'Matthew', ''], dtype=object)
array(['Gingras', 'Michel J. P.', ''], dtype=object)]
|
5,406 |
2003.08631
|
Quirino D'Amato
|
Q. D'Amato, R. Gilli, C. Vignali, M. Massardi, F. Pozzi, G. Zamorani,
C. Circosta, F. Vito, J. Fritz, G. Cresci, V. Casasola, F. Calura, A. Feltre,
V. Manieri, D. Rigopoulou, P. Tozzi and C. Norman
|
Dust and gas content of high-redshift galaxies hosting obscured AGN in
the CDF-S
|
15 pages, 6 figures, 7 tables. Accepted for publication in A&A
|
A&A 636, A37 (2020)
|
10.1051/0004-6361/201936175
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Obscured AGN represent a significant fraction of the entire AGN population,
especially at high redshift (~70% at z=3--5). They are often characterized by
the presence of large gas and dust reservoirs that are thought to sustain and
possibly obscure vigorous star formation processes that make these objects
shine at far-IR and sub-mm wavelengths. We exploit ALMA Cycle 4 observations of
the continuum (~2.1mm) and high-J CO emission of a sample of six X-ray selected
SMGs hosting an obscured AGN at z_spec>2.5 in the 7 Ms CDF-S. We measured the
masses and sizes of the dust and molecular gas and we derived the gas density
and column density on the basis of a uniform sphere geometry. Finally, we
compared the measured column densities with those derived from the Chandra
X-ray spectra. We detected both the continuum and line emission for three
sources for which we measured both the flux density and size. For the
undetected sources, we derived an upper limit on the flux density. We found
that the detected galaxies are rich in gas and dust (molecular gas mass in the
range <0.5 - 2.7 x 10^10 M_sun for {\alpha}_CO=0.8 and up to ~2 x 10^11~M_sun
for {\alpha}_CO=6.5, and dust mass <0.9 - 4.9 x 10^8 M_sun) and compact (gas
major axis 2.1-3.0 kpc, dust major axis 1.4-2.7 kpc). The column densities
associated with the ISM are on the order of 10^(23-24) cm-2, which is
comparable with those derived from the X-ray spectra. For the detected sources
we also derived dynamical masses in the range 0.8 - 3.7 x 10^10 M_sun. We
conclude that the ISM of high redshift galaxies can substantially contribute to
nuclear obscuration up to the Compton-thick (>10^24 cm-2) regime. In addition,
we found that all the detected sources show a velocity gradient reminding one
rotating system, even though two of them show peculiar features in their
morphology that can be associated with a chaotic, possibly merging, structure.
|
[{'version': 'v1', 'created': 'Thu, 19 Mar 2020 08:55:23 GMT'}]
|
2020-09-01
|
[array(["D'Amato", 'Q.', ''], dtype=object)
array(['Gilli', 'R.', ''], dtype=object)
array(['Vignali', 'C.', ''], dtype=object)
array(['Massardi', 'M.', ''], dtype=object)
array(['Pozzi', 'F.', ''], dtype=object)
array(['Zamorani', 'G.', ''], dtype=object)
array(['Circosta', 'C.', ''], dtype=object)
array(['Vito', 'F.', ''], dtype=object)
array(['Fritz', 'J.', ''], dtype=object)
array(['Cresci', 'G.', ''], dtype=object)
array(['Casasola', 'V.', ''], dtype=object)
array(['Calura', 'F.', ''], dtype=object)
array(['Feltre', 'A.', ''], dtype=object)
array(['Manieri', 'V.', ''], dtype=object)
array(['Rigopoulou', 'D.', ''], dtype=object)
array(['Tozzi', 'P.', ''], dtype=object)
array(['Norman', 'C.', ''], dtype=object)]
|
5,407 |
0904.2702
|
Vassilios Karakostas Dr.
|
Vassilios Karakostas
|
Humean Supervenience in the Light of Contemporary Science
|
33 pages
|
Metaphysica (2009) 10: 1-26
| null | null |
physics.hist-ph quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is shown that Lewis' ontological doctrine of Humean supervenience
incorporates at its foundation the so-called separability principle of
classical physics. In view of the systematic violation of the latter within
quantum mechanics, the claim that contemporary physical science may posit
non-supervenient relations beyond the spatiotemporal ones is reinforced on a
foundational basis concerning constraints on the state-representation of
physical systems. Depending on the mode of assignment of states to physical
systems, unit state vectors versus statistical density operators, we
distinguish between strongly and weakly non-Humean, non-supervenient relations.
It is demonstrated that in either case the relations of quantum entanglement
constitute prototypical examples of irreducible physical relations that do not
supervene upon a spatiotemporal arrangement of Humean qualities, weakening,
thereby, the thesis of Humean supervenience. It is examined, in this respect,
the status of Lewis' recombination principle, whereas his conception of lawhood
is critically investigated. It is concluded that the assumption of ontological
reductionism, as expressed in Lewis' Humean doctrine, cannot be regarded as a
reliable code of the nature of the physical world and its contents. It is
proposed instead that, due to the undeniable existence of non-supervenient
relations, a metaphysic of relations of a moderate kind ought to be
acknowledged as an indispensable part of our understanding of the natural world
at a fundamental level.
|
[{'version': 'v1', 'created': 'Fri, 17 Apr 2009 13:50:54 GMT'}]
|
2009-04-20
|
[array(['Karakostas', 'Vassilios', ''], dtype=object)]
|
5,408 |
1708.00586
|
Sifat Ibne Mushfique
|
Sifat Ibne Mushfique, Prabath Palathingal, Yusuf Said Eroglu, Murat
Yuksel, Ismail Guvenc and Nezih Pala
|
A Software-Defined Multi-Element VLC Architecture
| null | null | null | null |
cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the modern era of radio frequency (RF) spectrum crunch, visible light
communication (VLC) is a recent and promising alternative technology that
operates at the visible light spectrum. Thanks to its unlicensed and large
bandwidth, VLC can deliver high throughput, better energy efficiency, and low
cost data communications. In this article, a hybrid RF/VLC architecture is
considered that can simultaneously provide light- ing and communication
coverage across a room. Considered architecture involves a novel multi-element
hemispherical bulb design, which can transmit multiple data streams over light
emitting diode (LED) modules. Simulations considering various VLC transmitter
configurations and topologies show that good link quality and high spatial
reuse can be maintained in typical indoor communication scenarios.
|
[{'version': 'v1', 'created': 'Wed, 2 Aug 2017 03:06:55 GMT'}]
|
2017-08-03
|
[array(['Mushfique', 'Sifat Ibne', ''], dtype=object)
array(['Palathingal', 'Prabath', ''], dtype=object)
array(['Eroglu', 'Yusuf Said', ''], dtype=object)
array(['Yuksel', 'Murat', ''], dtype=object)
array(['Guvenc', 'Ismail', ''], dtype=object)
array(['Pala', 'Nezih', ''], dtype=object)]
|
5,409 |
0810.5167
|
Christopher Spitzer
|
Ann E. Nelson, Christopher Spitzer
|
Slightly Non-Minimal Dark Matter in PAMELA and ATIC
|
7 pages, 6 figures, v3: updated for new data, added discussion of
Fermi
|
JHEP 1010:066,2010
|
10.1007/JHEP10(2010)066
| null |
hep-ph astro-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a simple model in which dark matter couples to the standard model
through a light scalar intermediary that is itself unstable. We find this model
has several notable features, and allows a natural explanation for a surplus of
positrons, but no surplus of anti-protons, as has been suggested by early data
from PAMELA and ATIC. Moreover, this model yields a very small nucleon
coupling, well below the direct detection limits. In this paper we explore the
effect of this model in both the early universe and in the galaxy.
|
[{'version': 'v1', 'created': 'Wed, 29 Oct 2008 17:35:10 GMT'}
{'version': 'v2', 'created': 'Fri, 31 Oct 2008 07:35:01 GMT'}
{'version': 'v3', 'created': 'Mon, 26 Jul 2010 15:32:39 GMT'}]
|
2015-03-13
|
[array(['Nelson', 'Ann E.', ''], dtype=object)
array(['Spitzer', 'Christopher', ''], dtype=object)]
|
5,410 |
1202.6477
|
Asier Zubiaga
|
A. Zubiaga and F. Tuomisto and M. J. Puska
|
Matter-positronium interaction: An exact diagonalization study of the He
atom - positronium system
|
18 pages, 8 figures
|
Phys. Rev. A 85, 052707 (2012)
|
10.1103/PhysRevA.85.052707
| null |
physics.atm-clus cond-mat.mes-hall cond-mat.mtrl-sci physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The many-body system comprising a He nucleus, three electrons, and a positron
has been studied using the exact diagonalization technique. The purpose has
been to clarify to which extent the system can be considered as a
distinguishable positronium (Ps) atom interacting with a He atom and, thereby,
to pave the way to a practical atomistic modeling of Ps states and annihilation
in matter. The maximum value of the distance between the positron and the
nucleus is constrained and the Ps atom at different distances from the nucleus
is identified from the electron and positron densities, as well as from the
electron-positron distance and center-of-mass distributions. The polarization
of the Ps atom increases as its distance from the nucleus decreases. A
depletion of the He electron density, particularly large at low density values,
has been observed. The ortho-Ps pick-off annihilation rate calculated as the
overlap of the positron and the free He electron densities has to be corrected
for the observed depletion, specially at large pores/voids.
|
[{'version': 'v1', 'created': 'Wed, 29 Feb 2012 08:03:47 GMT'}]
|
2013-05-31
|
[array(['Zubiaga', 'A.', ''], dtype=object)
array(['Tuomisto', 'F.', ''], dtype=object)
array(['Puska', 'M. J.', ''], dtype=object)]
|
5,411 |
1209.1521
|
Christian Ikenmeyer
|
Christian Ikenmeyer
|
Small Littlewood-Richardson coefficients
|
24 pages
| null | null | null |
math.RT math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We develop structural insights into the Littlewood-Richardson graph, whose
number of vertices equals the Littlewood-Richardson coefficient
c({\lambda},{\mu},{\nu}) for given partitions {\lambda}, {\mu}, and {\nu}. This
graph was first introduced by B\"urgisser and Ikenmeyer in arXiv:1204.2484,
where its connectedness was proved.
Our insights are useful for the design of algorithms for computing the
Littlewood-Richardson coefficient: We design an algorithm for the exact
computation of c({\lambda},{\mu},{\nu}) with running time
O(c({\lambda},{\mu},{\nu})^2 poly(n)), where {\lambda}, {\mu}, and {\nu} are
partitions of length at most n. Moreover, we introduce an algorithm for
deciding whether c({\lambda},{\mu},{\nu}) >= t whose running time is O(t^2
poly(n)). Even the existence of a polynomial-time algorithm for deciding
whether c({\lambda},{\mu},{\nu}) >= 2 is a nontrivial new result on its own.
Our insights also lead to the proof of a conjecture by King, Tollu, and
Toumazet posed in 2004, stating that c({\lambda},{\mu},{\nu}) = 2 implies
c(M{\lambda},M{\mu},M{\nu}) = M + 1 for all M. Here, the stretching of
partitions is defined componentwise.
|
[{'version': 'v1', 'created': 'Fri, 7 Sep 2012 12:58:29 GMT'}]
|
2012-09-10
|
[array(['Ikenmeyer', 'Christian', ''], dtype=object)]
|
5,412 |
astro-ph/0004092
|
Michael D. Gladders
|
Michael D. Gladders and H.K.C. Yee
|
A New Method For Galaxy Cluster Detection I: The Algorithm
|
To appear in November AJ, 22 pages, including 10 embedded figures,
two-column preprint using aas2pp4 style file. For information on the
associated 100 square degree, z~1 cluster survey, see
http://www.astro.utoronto.ca/~gladders/RCS/
|
Astron.J.120:2148,2000
|
10.1086/301557
| null |
astro-ph
| null |
Numerous methods for finding clusters at moderate to high redshifts have been
proposed in recent years, at wavelengths ranging from radio to X-rays. In this
paper we describe a new method for detecting clusters in two-band
optical/near-IR imaging data. The method relies upon the observation that all
rich clusters, at all redshifts observed so far, appear to have a red sequence
of early-type galaxies. The emerging picture is that all rich clusters contain
a core population of passively evolving elliptical galaxies which are coeval
and formed at high redshifts. The proposed search method exploits this strong
empirical fact by using the red sequence as a direct indicator of overdensity.
The fundamental advantage of this approach is that with appropriate filters,
cluster elliptical galaxies at a given redshift are redder than all normal
galaxies at lower redshifts. A simple color cut thus virtually eliminates all
foreground contamination, even at significant redshifts. In this paper, one of
a series of two, we describe the underlying assumptions and basic techniques of
the method in detail, and contrast the method with those used by other authors.
We provide a brief demonstration of the effectiveness of the technique using
real redshift data, and from this conclude that the method offers a powerful
yet simple way of identify galaxy clusters. We find that the method can
reliably detect structures to masses as small as groups with velocity
dispersions of only ~300 km/sec, with redshifts for all detected structures
estimated to an accuracy of ~10%.
|
[{'version': 'v1', 'created': 'Thu, 6 Apr 2000 20:06:05 GMT'}
{'version': 'v2', 'created': 'Sat, 5 Aug 2000 18:38:32 GMT'}]
|
2008-11-26
|
[array(['Gladders', 'Michael D.', ''], dtype=object)
array(['Yee', 'H. K. C.', ''], dtype=object)]
|
5,413 |
1504.02315
|
Andrey Chubukov
|
Andrey V. Chubukov, Rafael M. Fernandes, and Joerg Schmalian
|
The origin of nematic order in FeSe
|
5 pages, 3 figures
|
Phys. Rev. B 91, 201105 (2015)
|
10.1103/PhysRevB.91.201105
| null |
cond-mat.str-el cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The origin of the 90 K nematic transition in the chalcogenide FeSe, which
displays no magnetic order down to T=0, remains a major puzzle for a unifying
theory for the iron-based superconductors. We analyze this problem in light of
recent experimental data which reveal very small Fermi pockets in this
material. We show that the smallness of the Fermi energy leads to a
near-degeneracy between magnetic fluctuations and fluctuations in the
charge-current density-wave channel. While the two fluctuation modes cooperate
to promote the same preemptive Ising-nematic order, they compete for primary
order. We argue that this explains why in FeSe the nematic order emerges when
the magnetic correlation length is smaller than in other Fe-based materials,
and why no magnetism is observed. We discuss how pressure lifts this
near-degeneracy, resulting in a non-monotonic dependence of the nematic
transition with pressure, in agreement with experiments.
|
[{'version': 'v1', 'created': 'Thu, 9 Apr 2015 14:03:54 GMT'}]
|
2015-06-29
|
[array(['Chubukov', 'Andrey V.', ''], dtype=object)
array(['Fernandes', 'Rafael M.', ''], dtype=object)
array(['Schmalian', 'Joerg', ''], dtype=object)]
|
5,414 |
1309.4637
|
Daniel C. Isaksen
|
Daniel C. Isaksen
|
When is a fourfold Massey product defined?
| null | null | null | null |
math.AT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We define a new invariant in the homology of a differential graded algebra.
This invariant is the obstruction to defining a fourfold Massey product.
|
[{'version': 'v1', 'created': 'Wed, 18 Sep 2013 13:14:06 GMT'}]
|
2013-09-19
|
[array(['Isaksen', 'Daniel C.', ''], dtype=object)]
|
5,415 |
2007.07551
|
Simone Felicetti Dr.
|
Simone Felicetti, Jacopo Fregoni, Thomas Schnappinger, Sebastian
Reiter, Regina de Vivie-Riedle, Johannes Feist
|
Photoprotecting uracil by coupling with lossy nanocavities
|
19 pages, 4 figures, updated reference list
|
J. Phys. Chem. Lett. 11, 8810-8818 (2020)
|
10.1021/acs.jpclett.0c02236
| null |
cond-mat.mes-hall physics.chem-ph physics.comp-ph physics.optics quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We analyze how the photorelaxation dynamics of a molecule can be controlled
by modifying its electromagnetic environment using a nanocavity mode. In
particular, we consider the photorelaxation of the RNA nucleobase uracil, which
is the natural mechanism to prevent photodamage. In our theoretical work, we
identify the operative conditions in which strong coupling with the cavity mode
can open an efficient photoprotective channel, resulting in a relaxation
dynamics twice as fast than the natural one. We rely on a state-of-the-art
chemically-detailed molecular model and a non-Hermitian Hamiltonian propagation
approach to perform full-quantum simulations of the system dissipative
dynamics. By focusing on the photon decay, our analysis unveils the active role
played by cavity-induced dissipative processes in modifying chemical reaction
rates, in the context of molecular polaritonics. Remarkably, we find that the
photorelaxation efficiency is maximized when an optimal trade-off between
light-matter coupling strength and photon decay rate is satisfied. This result
is in contrast with the common intuition that increasing the quality factor of
nanocavities and plasmonic devices improves their performance. Finally, we use
a detailed model of a metal nanoparticle to show that the speedup of the uracil
relaxation could be observed via coupling with a nanosphere pseudomode, without
requiring the implementation of complex nanophotonic structures.
|
[{'version': 'v1', 'created': 'Wed, 15 Jul 2020 09:05:03 GMT'}
{'version': 'v2', 'created': 'Wed, 5 Aug 2020 10:09:54 GMT'}]
|
2020-11-12
|
[array(['Felicetti', 'Simone', ''], dtype=object)
array(['Fregoni', 'Jacopo', ''], dtype=object)
array(['Schnappinger', 'Thomas', ''], dtype=object)
array(['Reiter', 'Sebastian', ''], dtype=object)
array(['de Vivie-Riedle', 'Regina', ''], dtype=object)
array(['Feist', 'Johannes', ''], dtype=object)]
|
5,416 |
1811.02875
|
Pietro Longhi
|
Sibasish Banerjee, Pietro Longhi and Mauricio Romo
|
Exploring 5d BPS Spectra with Exponential Networks
|
A summary for mathematicians is included; v2: updated references
| null |
10.1007/s00023-019-00851-x
| null |
hep-th math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We develop geometric techniques for counting BPS states in five-dimensional
gauge theories engineered by M theory on a toric Calabi-Yau threefold. The
problem is approached by studying framed 3d-5d wall-crossing in presence of a
single M5 brane wrapping a special Lagrangian submanifold $L$. The spectrum of
3d-5d BPS states is encoded by the geometry of the manifold of vacua of the
3d-5d system, which further coincides with the mirror curve describing moduli
of the Lagrangian brane. Information about the BPS spectrum is extracted from
the geometry of the mirror curve by construction of a nonabelianization map for
exponential networks. For the simplest Calabi-Yau, $\mathbb{C}^3$ we reproduce
the count of 5d BPS states encoded by the Mac Mahon function in the context of
topological strings, and match predictions of 3d $tt^*$ geometry for the count
of 3d-5d BPS states. We comment on applications of our construction to the
study of enumerative invariants of toric Calabi-Yau threefolds.
|
[{'version': 'v1', 'created': 'Wed, 7 Nov 2018 13:36:23 GMT'}
{'version': 'v2', 'created': 'Sat, 17 Nov 2018 17:41:26 GMT'}]
|
2020-01-08
|
[array(['Banerjee', 'Sibasish', ''], dtype=object)
array(['Longhi', 'Pietro', ''], dtype=object)
array(['Romo', 'Mauricio', ''], dtype=object)]
|
5,417 |
1807.04194
|
Thomas Essinger-Hileman
|
Thomas Essinger-Hileman, Charles L. Bennett, Lance Corbett, Haiquan
Guo, Kyle Helson, Tobias Marriage, Mary Ann B. Meador, Karwan Rostem, Edward
J. Wollack
|
Aerogel scattering filters for cosmic microwave background observations
|
13 pages, 5 figures, Accepted by Applied Optics
| null | null | null |
astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the design and performance of broadband and tunable
infrared-blocking filters for millimeter and sub-millimeter astronomy composed
of small scattering particles embedded in an aerogel substrate. The
ultra-low-density (typically < 150 mg/cm^3) aerogel substrate provides an index
of refraction as low as 1.05, removing the need for anti-reflection coatings
and allowing for broadband operation from DC to above 1 THz. The size
distribution of the scattering particles can be tuned to provide a variable
cutoff frequency. Aerogel filters with embedded high-resistivity silicon powder
are being produced at 40-cm diameter to enable large-aperture cryogenic
receivers for cosmic microwave background polarimeters, which require large
arrays of sub-Kelvin detectors in their search for the signature of an
inflationary gravitational-wave background.
|
[{'version': 'v1', 'created': 'Wed, 11 Jul 2018 15:28:27 GMT'}
{'version': 'v2', 'created': 'Wed, 13 May 2020 21:52:15 GMT'}]
|
2021-11-03
|
[array(['Essinger-Hileman', 'Thomas', ''], dtype=object)
array(['Bennett', 'Charles L.', ''], dtype=object)
array(['Corbett', 'Lance', ''], dtype=object)
array(['Guo', 'Haiquan', ''], dtype=object)
array(['Helson', 'Kyle', ''], dtype=object)
array(['Marriage', 'Tobias', ''], dtype=object)
array(['Meador', 'Mary Ann B.', ''], dtype=object)
array(['Rostem', 'Karwan', ''], dtype=object)
array(['Wollack', 'Edward J.', ''], dtype=object)]
|
5,418 |
1203.0296
|
Shunsaku Horiuchi
|
Shunsaku Horiuchi, Kohta Murase, Kunihito Ioka, Peter Meszaros
|
The survival of nuclei in jets associated with core-collapse supernovae
|
v2 (16 pages, 7 figures, 1 table) matches published version (extended
discussions, table added, conclusions unchanged)
|
Astrophys.J.753:69,2012
|
10.1088/0004-637X/753/1/69
|
KEK-TH-1532, KEK-Cosmo-92
|
astro-ph.HE astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Heavy nuclei such as nickel-56 are synthesized in a wide range of
core-collapse supernovae (CCSN), including energetic supernovae associated with
gamma-ray bursts (GRBs). Recent studies suggest that jet-like outflows are a
common feature of CCSN. These outflows may entrain synthesized nuclei at launch
or during propagation, and provide interesting multi-messenger signals
including heavy ultra-high energy cosmic rays. Here, we investigate the
destruction processes of nuclei during crossing from the stellar material into
the jet material via a cocoon, and during propagation after being successfully
loaded into the jet. We find that nuclei can survive for a range of jet
parameters because collisional cooling is faster than spallation. While
canonical high-luminosity GRB jets may contain nuclei, magnetic dominated
models or low-luminosity jets with small bulk Lorentz factors are more
favorable for having a more significant heavy nuclei component.
|
[{'version': 'v1', 'created': 'Thu, 1 Mar 2012 20:59:59 GMT'}
{'version': 'v2', 'created': 'Sat, 19 May 2012 03:48:21 GMT'}]
|
2015-04-23
|
[array(['Horiuchi', 'Shunsaku', ''], dtype=object)
array(['Murase', 'Kohta', ''], dtype=object)
array(['Ioka', 'Kunihito', ''], dtype=object)
array(['Meszaros', 'Peter', ''], dtype=object)]
|
5,419 |
0711.1258
|
Marcus Warfheimer
|
Jeffrey E. Steif and Marcus Warfheimer
|
The critical contact process in a randomly evolving environment dies out
|
21 pages, 3 figures
|
Latin American Journal of Probability and Mathematical Statistics,
Alea 4, 337-357, 2008
| null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Bezuidenhout and Grimmett proved that the critical contact process dies out.
Here, we generalize the result to the so called contact process in a random
evolving environment (CPREE), introduced by Erik Broman. This process is a
generalization of the contact process where the recovery rate can vary between
two values. The rate which it chooses is determined by a background process,
which evolves independently at different sites. As for the contact process, we
can similarly define a critical value in terms of survival for this process. In
this paper we prove that this definition is independent of how we start the
background process, that finite and infinite survival (meaning nontriviality of
the upper invariant measure) are equivalent and finally that the process dies
out at criticality.
|
[{'version': 'v1', 'created': 'Thu, 8 Nov 2007 12:23:17 GMT'}
{'version': 'v2', 'created': 'Mon, 22 Mar 2010 05:34:27 GMT'}]
|
2010-03-23
|
[array(['Steif', 'Jeffrey E.', ''], dtype=object)
array(['Warfheimer', 'Marcus', ''], dtype=object)]
|
5,420 |
1307.6594
|
Lawrence Uricchio
|
Lawrence H. Uricchio, Ryan D. Hernandez
|
Robust forward simulations of recurrent hitchhiking
| null |
Genetics May 2014 197:221-236
|
10.1534/genetics.113.156935
| null |
q-bio.PE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Evolutionary forces shape patterns of genetic diversity within populations
and contribute to phenotypic variation. In particular, recurrent positive
selection has attracted significant interest in both theoretical and empirical
studies. However, most existing theoretical models of recurrent positive
selection cannot easily incorporate realistic confounding effects such as
interference between selected sites, arbitrary selection schemes, and
complicated demographic processes. It is possible to quantify the effects of
arbitrarily complex evolutionary models by performing forward population
genetic simulations, but forward simulations can be computationally prohibitive
for large population sizes ($> 10^5$). A common approach for overcoming these
computational limitations is rescaling of the most computationally expensive
parameters, especially population size. Here, we show that ad hoc approaches to
parameter rescaling under the recurrent hitchhiking model do not always provide
sufficiently accurate dynamics, potentially skewing patterns of diversity in
simulated DNA sequences. We derive an extension of the recurrent hitchhiking
model that is appropriate for strong selection in small population sizes, and
use it to develop a method for parameter rescaling that provides the best
possible computational performance for a given error tolerance. We perform a
detailed theoretical analysis of the robustness of rescaling across the
parameter space. Finally, we apply our rescaling algorithms to parameters that
were previously inferred for Drosophila, and discuss practical considerations
such as interference between selected sites.
|
[{'version': 'v1', 'created': 'Wed, 24 Jul 2013 21:40:45 GMT'}
{'version': 'v2', 'created': 'Wed, 7 May 2014 21:41:11 GMT'}]
|
2014-05-09
|
[array(['Uricchio', 'Lawrence H.', ''], dtype=object)
array(['Hernandez', 'Ryan D.', ''], dtype=object)]
|
5,421 |
1706.07185
|
Jose Maria Grau
|
L. Bayon, P. Fortuny Ayuso, J.M. Grau, A.M. Oller-Marcen, M.M. Ruiz
|
The Best-or-Worst and the Postdoc problems
| null | null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider two variants of the secretary problem, the\emph{ Best-or-Worst}
and the \emph{Postdoc} problems, which are closely related. First, we prove
that both variants, in their standard form with binary payoff 1 or 0, share the
same optimal stopping rule. We also consider additional cost/perquisites
depending on the number of interviewed candidates. In these situations the
optimal strategies are very different. Finally, we also focus on the
Best-or-Worst variant with different payments depending on whether the selected
candidate is the best or the worst.
|
[{'version': 'v1', 'created': 'Thu, 22 Jun 2017 07:21:23 GMT'}]
|
2017-06-23
|
[array(['Bayon', 'L.', ''], dtype=object)
array(['Ayuso', 'P. Fortuny', ''], dtype=object)
array(['Grau', 'J. M.', ''], dtype=object)
array(['Oller-Marcen', 'A. M.', ''], dtype=object)
array(['Ruiz', 'M. M.', ''], dtype=object)]
|
5,422 |
cond-mat/0502204
|
Pavel Streda
|
P. Streda
|
Relation between Hall resistance and the diamagnetic moment of Fermi
electrons
|
4 pages, 3 figures, submitted to Phys. Rev. Letters
| null | null | null |
cond-mat.mes-hall
| null |
General thermodynamical arguments are used to relate the Hall current to the
part of the magnetic moment originated in "macroscopic current loops". The Hall
resistance is found to depend only on the electron properties in the vicinity
of the Fermi energy, which is the essential advantage of the presented
treatment. The obtained relation is analyzed by using Landauer-Buttiker-like
view to the electron transport. As one of the possible application the Hall
resistance of the periodically modulated two-dimensional electron system in
strong magnetic fields is briefly discussed.
|
[{'version': 'v1', 'created': 'Tue, 8 Feb 2005 15:03:07 GMT'}]
|
2007-05-23
|
[array(['Streda', 'P.', ''], dtype=object)]
|
5,423 |
astro-ph/0601454
|
Christian Wolf
|
F. F\"orster, C. Wolf, Ph. Podsiadlowski, Z. Han
|
Constraints on SN Ia progenitor time delays from high-z SNe and the star
formation history
|
accepted for publication in MNRAS
|
Mon.Not.Roy.Astron.Soc.368:1893-1904,2006
|
10.1111/j.1365-2966.2006.10258.x
| null |
astro-ph
| null |
We re-assess the question of a systematic time delay between the formation of
the progenitor and its explosion in a type Ia supernova (SN Ia) using the
Hubble Higher-z Supernova Search sample (Strolger et al. 2004). While the
previous analysis indicated a significant time delay, with a most likely value
of 3.4 Gyr, effectively ruling out all previously proposed progenitor models,
our analysis shows that the time-delay estimate is dominated by systematic
errors, in particular due to uncertainties in the star-formation history. We
find that none of the popular progenitor models under consideration can be
ruled out with any significant degree of confidence. The inferred time delay is
mainly determined by the peak in the assumed star-formation history. We show
that, even with a much larger Supernova sample, the time delay distribution
cannot be reliably reconstructed without better constraints on the
star-formation history.
|
[{'version': 'v1', 'created': 'Thu, 19 Jan 2006 21:32:21 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Mar 2006 11:00:12 GMT'}]
|
2009-11-11
|
[array(['Förster', 'F.', ''], dtype=object)
array(['Wolf', 'C.', ''], dtype=object)
array(['Podsiadlowski', 'Ph.', ''], dtype=object)
array(['Han', 'Z.', ''], dtype=object)]
|
5,424 |
2302.07307
|
Carlos Reyes
|
Felipe Garc\'ia-Ramos, Ronnie Pavlov, Carlos Reyes
|
Measures of maximal entropy of bounded density shifts
|
17 pages
| null | null | null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We find sufficient conditions for bounded density shifts to have a unique
measure of maximal entropy. We also prove that every measure of maximal entropy
of a bounded density shift is fully supported. As a consequence of this, we
obtain that bounded density shifts are surjunctive.
|
[{'version': 'v1', 'created': 'Tue, 14 Feb 2023 19:45:34 GMT'}]
|
2023-02-16
|
[array(['García-Ramos', 'Felipe', ''], dtype=object)
array(['Pavlov', 'Ronnie', ''], dtype=object)
array(['Reyes', 'Carlos', ''], dtype=object)]
|
5,425 |
1408.4915
|
Lukas Pottmeyer
|
Robert Grizzard, Philipp Habegger, Lukas Pottmeyer
|
Small points and free abelian groups
| null |
Int. Math. Res. Notices (2015) 2015 (20): 10657-10679
|
10.1093/imrn/rnv007
| null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $F$ be an algebraic extension of the rational numbers and $E$ an elliptic
curve defined over some number field contained in $F$. The absolute logarithmic
Weil height, respectively the N\'eron-Tate height, induces a norm on $F^*$
modulo torsion, respectively on $E(F)$ modulo torsion. The groups $F^*$ and
$E(F)$ are free abelian modulo torsion if the height function does not attain
arbitrarily small positive values. In this paper we prove the failure of the
converse to this statement by explicitly constructing counterexamples.
|
[{'version': 'v1', 'created': 'Thu, 21 Aug 2014 08:39:42 GMT'}]
|
2017-05-09
|
[array(['Grizzard', 'Robert', ''], dtype=object)
array(['Habegger', 'Philipp', ''], dtype=object)
array(['Pottmeyer', 'Lukas', ''], dtype=object)]
|
5,426 |
1909.12467
|
Keke Shang
|
Ke-ke Shang, Michael Small, Yan Wang, Di Yin, Shu Li
|
A novel metric for community detection
|
7 pages, 4 figures
| null |
10.1209/0295-5075/129/68002
| null |
physics.soc-ph cs.SI physics.data-an
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Research into detection of dense communities has recently attracted
increasing attention within network science, various metrics for detection of
such communities have been proposed. The most popular metric -- Modularity --
is based on the so-called rule that the links within communities are denser
than external links among communities, has become the default. However, this
default metric suffers from ambiguity, and worse, all augmentations of
modularity and based on a narrow intuition of what it means to form a
"community". We argue that in specific, but quite common systems, links within
a community are not necessarily more common than links between communities.
Instead we propose that the defining characteristic of a community is that
links are more predictable within a community rather than between communities.
In this paper, based on the effect of communities on link prediction, we
propose a novel metric for the community detection based directly on this
feature. We find that our metric is more robustness than traditional
modularity. Consequently, we can achieve an evaluation of algorithm stability
for the same detection algorithm in different networks. Our metric also can
directly uncover the false community detection, and infer more statistical
characteristics for detection algorithms.
|
[{'version': 'v1', 'created': 'Fri, 27 Sep 2019 02:10:50 GMT'}]
|
2020-06-24
|
[array(['Shang', 'Ke-ke', ''], dtype=object)
array(['Small', 'Michael', ''], dtype=object)
array(['Wang', 'Yan', ''], dtype=object)
array(['Yin', 'Di', ''], dtype=object)
array(['Li', 'Shu', ''], dtype=object)]
|
5,427 |
gr-qc/0210080
|
Sigbjorn Hervik
|
Sigbjorn Hervik
|
Vacuum Plane Waves in 4+1 D and Exact solutions to Einstein's Equations
in 3+1 D
|
16 pages, no figures
|
Class.Quant.Grav.20:4315-4327,2003
|
10.1088/0264-9381/20/19/312
| null |
gr-qc astro-ph hep-th
| null |
In this paper we derive homogeneous vacuum plane-wave solutions to Einstein's
field equations in 4+1 dimensions. The solutions come in five different types
of which three generalise the vacuum plane-wave solutions in 3+1 dimensions to
the 4+1 dimensional case. By doing a Kaluza-Klein reduction we obtain solutions
to the Einstein-Maxwell equations in 3+1 dimensions. The solutions generalise
the vacuum plane-wave spacetimes of Bianchi class B to the non-vacuum case and
describe spatially homogeneous spacetimes containing an extremely tilted fluid.
Also, using a similar reduction we obtain 3+1 dimensional solutions to the
Einstein equations with a scalar field.
|
[{'version': 'v1', 'created': 'Wed, 23 Oct 2002 17:59:33 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Jun 2003 13:24:45 GMT'}]
|
2008-11-26
|
[array(['Hervik', 'Sigbjorn', ''], dtype=object)]
|
5,428 |
1312.7561
|
John W. Barrett
|
John W. Barrett, Sara O. G. Tavares
|
Two-dimensional state sum models and spin structures
|
43 pages. Mathematica script in ancillary file. v2: nomenclature of
models and their properties changed, some proofs simplified, more detailed
explanations. v3: extended introduction, presentational improvements; final
version
| null |
10.1007/s00220-014-2246-z
| null |
math.QA gr-qc hep-th math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The state sum models in two dimensions introduced by Fukuma, Hosono and Kawai
are generalised by allowing algebraic data from a non-symmetric Frobenius
algebra. Without any further data, this leads to a state sum model on the
sphere. When the data is augmented with a crossing map, the partition function
is defined for any oriented surface with a spin structure. An algebraic
condition that is necessary for the state sum model to be sensitive to spin
structure is determined. Some examples of state sum models that distinguish
topologically-inequivalent spin structures are calculated.
|
[{'version': 'v1', 'created': 'Sun, 29 Dec 2013 17:35:27 GMT'}
{'version': 'v2', 'created': 'Thu, 20 Feb 2014 17:05:32 GMT'}
{'version': 'v3', 'created': 'Fri, 13 Mar 2015 21:46:26 GMT'}]
|
2015-06-18
|
[array(['Barrett', 'John W.', ''], dtype=object)
array(['Tavares', 'Sara O. G.', ''], dtype=object)]
|
5,429 |
1605.08027
|
Leonardo Andreta de Castro
|
Leonardo Andreta de Castro, Carlos Alexandre Brasil, Reginaldo de
Jesus Napolitano
|
Elliptical orbits in the phase-space quantization
| null | null |
10.1590/1806-9126-RBEF-2016-0067
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The energy levels of hydrogen-like atoms are obtained from the phase-space
quantization, one of the pillars of the old quantum theory, by three different
methods - (i) direct integration, (ii) Sommerfeld's original method, and (iii)
complex integration. The difficulties come from the imposition of elliptical
orbits to the electron, resulting in a variable radial component of the linear
momentum. Details of the calculation, which constitute a recurrent gap in
textbooks that deal with phase-space quantization, are shown in depth in an
accessible fashion for students of introductory quantum mechanics courses.
|
[{'version': 'v1', 'created': 'Wed, 25 May 2016 19:52:09 GMT'}
{'version': 'v2', 'created': 'Thu, 14 Jul 2016 18:26:44 GMT'}]
|
2016-07-15
|
[array(['de Castro', 'Leonardo Andreta', ''], dtype=object)
array(['Brasil', 'Carlos Alexandre', ''], dtype=object)
array(['Napolitano', 'Reginaldo de Jesus', ''], dtype=object)]
|
5,430 |
1612.04554
|
Panayiotis Stavrinos
|
Panayiotis C.Stavrinos and Maria Alexiou
|
Raychaudhuri equation in the Finsler-Randers spacetime and Generalized
scalar-tensor theories
| null | null | null | null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we obtain the Raychaudhuri equations for various types of
Finsler spaces as the Finsler-Randers (FR) space-time and in a more general
geometrical structure of the space-time manifold which contains two fibres that
are two scalars which represent inflaton fields $\phi^{(1)}, \phi^{(2)}.$In
addition, the energy-conditions are studied in a FR cosmology and are
correlated with FRW model. Finally an application of Raychaudhuri equation for
the model $M \times \{ \phi^{(1)} \} \times \{ \phi^{(2)} \}$ with M a FRW
space is given.
|
[{'version': 'v1', 'created': 'Wed, 14 Dec 2016 09:54:17 GMT'}
{'version': 'v2', 'created': 'Mon, 13 Nov 2017 10:58:35 GMT'}]
|
2017-11-15
|
[array(['Stavrinos', 'Panayiotis C.', ''], dtype=object)
array(['Alexiou', 'Maria', ''], dtype=object)]
|
5,431 |
2204.00229
|
Deyang Duan
|
Qiang Gao, Yuge Li, Yunjie Xia, Deyang Duan
|
Turbulence-free computational ghost imaging
|
7 pages, 6 figures
| null | null | null |
physics.optics eess.IV quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Turbulence-free images cannot be produced by conventional computational ghost
imaging because calculated light is not affected by the same atmospheric
turbulence as real light. In this article, we first addressed this issue by
measuring the photon number fluctuation autocorrelation of the signals
generated by a conventional computational ghost imaging device. Our results
illustrate how conventional computational ghost imaging without structural
changes can be used to produce turbulence-free images.
|
[{'version': 'v1', 'created': 'Fri, 1 Apr 2022 06:35:17 GMT'}]
|
2022-04-04
|
[array(['Gao', 'Qiang', ''], dtype=object)
array(['Li', 'Yuge', ''], dtype=object)
array(['Xia', 'Yunjie', ''], dtype=object)
array(['Duan', 'Deyang', ''], dtype=object)]
|
5,432 |
2210.15512
|
Annika Briegleb
|
Annika Briegleb, Mhd Modar Halimeh, Walter Kellermann
|
Exploiting spatial information with the informed complex-valued spatial
autoencoder for target speaker extraction
|
Accepted to 2023 IEEE International Conference on Acoustics, Speech
and Signal Processing (ICASSP), Rhodes Island, Greece. 5 pages, 2 figures
| null |
10.1109/ICASSP49357.2023.10095196
| null |
eess.AS cs.SD
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In conventional multichannel audio signal enhancement, spatial and spectral
filtering are often performed sequentially. In contrast, it has been shown that
for neural spatial filtering a joint approach of spectro-spatial filtering is
more beneficial. In this contribution, we investigate the spatial filtering
performed by such a time-varying spectro-spatial filter. We extend the recently
proposed complex-valued spatial autoencoder (COSPA) for the task of target
speaker extraction by leveraging its interpretable structure and purposefully
informing the network of the target speaker's position. We show that the
resulting informed COSPA (iCOSPA) effectively and flexibly extracts a target
speaker from a mixture of speakers. We also find that the proposed architecture
is well capable of learning pronounced spatial selectivity patterns and show
that the results depend significantly on the training target and the reference
signal when computing various evaluation metrics.
|
[{'version': 'v1', 'created': 'Thu, 27 Oct 2022 14:47:51 GMT'}
{'version': 'v2', 'created': 'Tue, 14 Mar 2023 15:17:57 GMT'}]
|
2023-06-13
|
[array(['Briegleb', 'Annika', ''], dtype=object)
array(['Halimeh', 'Mhd Modar', ''], dtype=object)
array(['Kellermann', 'Walter', ''], dtype=object)]
|
5,433 |
0910.4821
|
Haitang Yang
|
De-You Chen, Haitang Yang and Xiao-Tao Zu
|
Hawking radiation of black holes in the $z = 4$ Horava-Lifshitz gravity
|
V2: references added, typo corrected, 16pages
|
Phys.Lett.B681:463-468,2009
|
10.1016/j.physletb.2009.10.065
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the Hawking radiation of 3+1 and 4+1 dimensional black holes
in the $z = 4$ Horava-Lifshitz gravity with fermion tunnelling. It turns out
that the Hawking temperatures are recovered and are in consistence with those
obtained by calculating surface gravity of the black holes. For the 3+1
dimensional black holes, the Hawking temperatures are related to the
fundamental parameters of Horava-Lifshitz gravity.
|
[{'version': 'v1', 'created': 'Mon, 26 Oct 2009 07:49:18 GMT'}
{'version': 'v2', 'created': 'Mon, 9 Nov 2009 06:53:50 GMT'}]
|
2010-02-11
|
[array(['Chen', 'De-You', ''], dtype=object)
array(['Yang', 'Haitang', ''], dtype=object)
array(['Zu', 'Xiao-Tao', ''], dtype=object)]
|
5,434 |
cond-mat/0408152
|
Gabor Csathy
|
G.A. Cs\'athy, Hwayong Noh, D.C. Tsui, L.N. Pfeiffer, and K.W. West
|
Magnetic Field Induced Insulating Phases at Large $r_s$
| null | null |
10.1103/PhysRevLett.94.226802
| null |
cond-mat.mes-hall cond-mat.str-el
| null |
Exploring a backgated low density two-dimensional hole sample in the large
$r_s$ regime we found a surprisingly rich phase diagram. At the highest
densities, beside the $\nu=1/3$, 2/3, and 2/5 fractional quantum Hall states,
we observe both of the previously reported high field insulating and reentrant
insulating phases. As the density is lowered, the reentrant insulating phase
initially strengthens, then it unexpectedly starts weakening until it
completely dissapears. At the lowest densities the terminal quantum Hall state
moves from $\nu=1/3$ to $\nu=1$. The intricate behavior of the insulating
phases can be explained by a non-monotonic melting line in the $\nu$-$r_s$
phase space.
|
[{'version': 'v1', 'created': 'Fri, 6 Aug 2004 21:33:09 GMT'}]
|
2009-11-10
|
[array(['Csáthy', 'G. A.', ''], dtype=object)
array(['Noh', 'Hwayong', ''], dtype=object)
array(['Tsui', 'D. C.', ''], dtype=object)
array(['Pfeiffer', 'L. N.', ''], dtype=object)
array(['West', 'K. W.', ''], dtype=object)]
|
5,435 |
2301.10835
|
Artur Jordao
|
Artur Jordao and George Correa de Araujo and Helena de Almeida Maia
and Helio Pedrini
|
When Layers Play the Lottery, all Tickets Win at Initialization
| null | null | null | null |
cs.LG
|
http://creativecommons.org/licenses/by/4.0/
|
Pruning is a standard technique for reducing the computational cost of deep
networks. Many advances in pruning leverage concepts from the Lottery Ticket
Hypothesis (LTH). LTH reveals that inside a trained dense network exists sparse
subnetworks (tickets) able to achieve similar accuracy (i.e., win the lottery -
winning tickets). Pruning at initialization focuses on finding winning tickets
without training a dense network. Studies on these concepts share the trend
that subnetworks come from weight or filter pruning. In this work, we
investigate LTH and pruning at initialization from the lens of layer pruning.
First, we confirm the existence of winning tickets when the pruning process
removes layers. Leveraged by this observation, we propose to discover these
winning tickets at initialization, eliminating the requirement of heavy
computational resources for training the initial (over-parameterized) dense
network. Extensive experiments show that our winning tickets notably speed up
the training phase and reduce up to 51% of carbon emission, an important step
towards democratization and green Artificial Intelligence. Beyond computational
benefits, our winning tickets exhibit robustness against adversarial and
out-of-distribution examples. Finally, we show that our subnetworks easily win
the lottery at initialization while tickets from filter removal (the standard
structured LTH) hardly become winning tickets.
|
[{'version': 'v1', 'created': 'Wed, 25 Jan 2023 21:21:15 GMT'}]
|
2023-01-27
|
[array(['Jordao', 'Artur', ''], dtype=object)
array(['de Araujo', 'George Correa', ''], dtype=object)
array(['Maia', 'Helena de Almeida', ''], dtype=object)
array(['Pedrini', 'Helio', ''], dtype=object)]
|
5,436 |
1803.08384
|
Elena Nokhrina E
|
E. Nokhrina
|
The correlation between the total magnetic flux and the total jet power
|
12 pages, 2 figures, 1 table
|
Frontiers in Astronomy and Space Sciences, 4, 63 (2017)
|
10.3389/fspas.2017.00063
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Magnetic field threading a black hole ergosphere is believed to play the key
role in both driving the powerful relativistic jets observed in active galactic
nuclei and extracting the rotational energy from a black hole via
Blandford-Znajek process. The magnitude of magnetic field and the magnetic flux
in the vicinity of a central black hole is predicted by theoretical models. On
the other hand, the magnetic field in a jet can be estimated through
measurements of either the core shift effect or the brightness temperature. In
both cases the obtained magnetic field is in the radiating domain, so its
direct application to the calculation of the magnetic flux needs some
theoretical assumptions. In this paper we address the issue of estimating the
magnetic flux contained in a jet using the measurements of a core shift effect
and of a brightness temperature for the jets, directed almost at the observer.
The accurate account for the jet transversal structure allow us to express the
magnetic flux through the observed values and an unknown rotation rate of
magnetic surfaces. If we assume the sources are in a magnetically arrested disk
state, the lower limit for the rotation rate can be obtained. On the other
hand, the flux estimate may be tested against the total jet power predicted by
the electromagnetic energy extraction model. The resultant expression for power
depends logarithmically weakly on an unknown rotation rate. We show that the
total jet power estimated through the magnetic flux is in good agreement with
the observed power. We also obtain the extremely slow rotation rates, which may
be an indication that the majority of the sources considered are not in the
magnetically arrested disk state.
|
[{'version': 'v1', 'created': 'Thu, 22 Mar 2018 14:54:22 GMT'}]
|
2018-03-23
|
[array(['Nokhrina', 'E.', ''], dtype=object)]
|
5,437 |
1601.05213
|
Dominik Dier
|
Dominik Dier, Rico Zacher
|
Non-Autonomous Maximal Regularity in Hilbert Spaces
|
24 pages
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider non-autonomous evolutionary problems of the form
$u'(t)+A(t)u(t)=f(t)$, $u(0)=u_0,$ on $L^2([0,T];H)$, where $H$ is a Hilbert
space. We do not assume that the domain of the operator $A(t)$ is constant in
time $t$, but that $A(t)$ is associated with a sesquilinear form $a(t)$. Under
sufficient time regularity of the forms $a(t)$ we prove well-posedness with
maximal regularity in $L^2([0,T];H)$. Our regularity assumption is
significantly weaker than those from previous results inasmuch as we only
require a fractional Sobolev regularity with arbitrary small Sobolev index.
|
[{'version': 'v1', 'created': 'Wed, 20 Jan 2016 09:33:11 GMT'}]
|
2016-01-21
|
[array(['Dier', 'Dominik', ''], dtype=object)
array(['Zacher', 'Rico', ''], dtype=object)]
|
5,438 |
1310.8165
|
Pierre Sens
|
Pierre Sens
|
Rigidity sensing by stochastic sliding friction
|
6 pages, 4 figures
| null |
10.1209/0295-5075/104/38003
| null |
cond-mat.soft q-bio.CB
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The sliding friction force exerted by stochastic linkers interacting with a
moving filament is calculated. The elastic properties of the substrate on which
the linkers are anchored are shown to strongly influence the friction force. In
some cases, the force is maximal for a finite substrate rigidity. Collective
effects give rise to a dynamical instability resulting in a stick-slip
behaviour, which is substrate-sensitive. The relevance of these results for the
motility of crawling cells powered by an actin retrograde flow is discussed.
|
[{'version': 'v1', 'created': 'Wed, 30 Oct 2013 14:26:31 GMT'}]
|
2015-06-17
|
[array(['Sens', 'Pierre', ''], dtype=object)]
|
5,439 |
2103.02748
|
Michelangelo Pantaleoni Gonz\'alez
|
M. Pantaleoni Gonz\'alez, J. Ma\'iz Apell\'aniz, R. H. Barb\'a, B.
Cameron Reed
|
The Alma catalog of OB stars. II. A cross-match with Gaia DR2 and an
updated map of the solar neighbourhood
|
Accepted for publication in MNRAS
| null |
10.1093/mnras/stab688
| null |
astro-ph.SR astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We cross-match the Alma catalog of OB stars with Gaia DR2 astrometry and
photometry as a first step towards producing a clean sample of massive stars in
the solar neighbourhood with a high degree of completeness. We analyze the
resulting colour-absolute magnitude diagram to divide our sample into
categories and compare extinction estimates from two sources, finding problems
with both of them. The distances obtained with three different priors are found
to have few differences among them, indicating that Gaia DR2 distances are
robust. An analysis of the 3-D distribution of massive stars in the solar
neighbourhood is presented. We show that a kinematically distinct structure we
dub the Cepheus spur extends from the Orion-Cygnus spiral arm towards the
Perseus arm and is located above the Galactic mid-plane, likely being related
to the recently discovered Radcliffe wave. We propose that this corrugation
pattern in the Galactic disk may be responsible for the recent enhanced star
formation at its crests and troughs. We also discuss our plans to extend this
work in the immediate future.
|
[{'version': 'v1', 'created': 'Wed, 3 Mar 2021 23:17:44 GMT'}]
|
2021-06-23
|
[array(['González', 'M. Pantaleoni', ''], dtype=object)
array(['Apellániz', 'J. Maíz', ''], dtype=object)
array(['Barbá', 'R. H.', ''], dtype=object)
array(['Reed', 'B. Cameron', ''], dtype=object)]
|
5,440 |
1908.00331
|
Chudamani Pranesachar Anil Kumar
|
C P Anil Kumar, Soham Swadhin Pradhan
|
On the Endomorphism Semigroups of Extra-special $p$-groups and
Automorphism Orbits
|
23 pages
|
International Journal of Group Theory, Vol.11, No. 4, 2022, pp.
201-220
|
10.22108/IJGT.2021.129815.1708
| null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For an odd prime $p$ and a positive integer $n$, it is well known that there
are two types of extra-special $p$-groups of order $p^{2n+1}$, first one is the
Heisenberg group which has exponent $p$ and the second one is of exponent
$p^2$. In this article, a new way of representing the extra-special $p$-group
of exponent $p^2$ is given. These representations facilitate an explicit way of
finding formulae for any endomorphism and any automorphism of an extra-special
$p$-group $G$ for both the types. Based on these formulae, the endomorphism
semigroup $End(G)$ and the automorphism group $Aut(G)$ are described. The
endomorphism semigroup image of any element in $G$ is found and the orbits
under the action of the automorphism group $Aut(G)$ are determined. As a
consequence it is deduced that, under the notion of degeneration of elements in
$G$, the endomorphism semigroup $End(G)$ induces a partial order on the
automorphism orbits when $G$ is the Heisenberg group and does not induce when
$G$ is the extra-special $p$-group of exponent $p^2$. Finally we prove that the
cardinality of isotropic subspaces of any fixed dimension in a non-degenerate
symplectic space is a polynomial in $p$ with non-negative integer coefficients.
Using this fact we compute the cardinality of $End(G)$.
|
[{'version': 'v1', 'created': 'Thu, 1 Aug 2019 11:20:35 GMT'}
{'version': 'v2', 'created': 'Thu, 3 Oct 2019 06:35:14 GMT'}]
|
2022-11-28
|
[array(['Kumar', 'C P Anil', ''], dtype=object)
array(['Pradhan', 'Soham Swadhin', ''], dtype=object)]
|
5,441 |
1906.07709
|
Matus Telgarsky
|
Bolton Bailey, Ziwei Ji, Matus Telgarsky, Ruicheng Xian
|
Approximation power of random neural networks
|
This submission constitutes a poor approach to the problem, and has
no scientific purpose. A superior (different) approach (and stronger final
result, also treating the NTK) has appeared in arXiv:1910.06956 ; please see
that work instead
| null | null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper investigates the approximation power of three types of random
neural networks: (a) infinite width networks, with weights following an
arbitrary distribution; (b) finite width networks obtained by subsampling the
preceding infinite width networks; (c) finite width networks obtained by
starting with standard Gaussian initialization, and then adding a vanishingly
small correction to the weights. The primary result is a fully quantified bound
on the rate of approximation of general general continuous functions: in all
three cases, a function $f$ can be approximated with complexity $\|f\|_1
(d/\delta)^{\mathcal{O}(d)}$, where $\delta$ depends on continuity properties
of $f$ and the complexity measure depends on the weight magnitudes and/or
cardinalities. Along the way, a variety of ancillary results are developed: an
exact construction of Gaussian densities with infinite width networks, an
elementary stand-alone proof scheme for approximation via convolutions of
radial basis functions, subsampling rates for infinite width networks, and
depth separation for corrected networks.
|
[{'version': 'v1', 'created': 'Tue, 18 Jun 2019 17:46:12 GMT'}
{'version': 'v2', 'created': 'Fri, 18 Oct 2019 03:19:11 GMT'}]
|
2019-10-21
|
[array(['Bailey', 'Bolton', ''], dtype=object)
array(['Ji', 'Ziwei', ''], dtype=object)
array(['Telgarsky', 'Matus', ''], dtype=object)
array(['Xian', 'Ruicheng', ''], dtype=object)]
|
5,442 |
1902.02193
|
M H Mortad Ph.D.
|
Souheyb Dehimi, Mohammed Hichem Mortad and Zsigmond Tarcsay
|
On the Operator Equations $A^n=A^*A$
| null | null | null | null |
math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $n\in\mathbb{N}$ and let $A$ be a closed linear operator (everywhere
bounded or unbounded). In this paper, we study (among others) equations of the
type $A^*A=A^n$ where $n\geq2$ and see when they yield $A=A^*$ (or a weaker
class of operators). In case $n\geq3$, we have in fact a new class of operators
which could placed right after orthogonal projections and just before normal
operators.
|
[{'version': 'v1', 'created': 'Wed, 6 Feb 2019 14:10:47 GMT'}]
|
2019-02-07
|
[array(['Dehimi', 'Souheyb', ''], dtype=object)
array(['Mortad', 'Mohammed Hichem', ''], dtype=object)
array(['Tarcsay', 'Zsigmond', ''], dtype=object)]
|
5,443 |
2203.11455
|
Andrea Aiello
|
Andrea Aiello
|
One more time on the helicity decomposition of spin and orbital optical
currents
|
19 pages, 0 figures. v2 version published in Journal of Physics A:
Mathematical and Theoretical, Special Issue "Claritons and the Asymptotics of
Ideas: the Physics of Michael Berry"
|
J. Phys. A: Math. Theor. 55 244004 (2022)
|
10.1088/1751-8121/ac6d8f
| null |
physics.optics quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The helicity representation of the linear momentum density of a light wave is
well understood for monochromatic optical fields in both paraxial and
non-paraxial regimes of propagation. In this note we generalize such
representation to nonmonochromatic optical fields. We find that, differently
from the monochromatic case, the linear momentum density, aka the Poynting
vector divided by $c^2$, does not separate into the sum of right-handed and
left-handed terms, even when the so-called electric-magnetic democracy in
enforced by averaging the electric and magnetic contributions. However, for
quasimonochromatic light, such a separation is approximately restored after
time-averaging. This paper is dedicated to Sir Michael Berry on the occasion of
his $80$th birthday.
|
[{'version': 'v1', 'created': 'Tue, 22 Mar 2022 04:22:24 GMT'}
{'version': 'v2', 'created': 'Sat, 28 May 2022 19:32:44 GMT'}]
|
2022-06-08
|
[array(['Aiello', 'Andrea', ''], dtype=object)]
|
5,444 |
cond-mat/0511076
|
Oren Shafir
|
Oren Shafir, Amit Keren, Satoru Maegawa, Miki Ueda, Alex Amato, Chris
Baines
|
Demonstrating Multi-bit Magnetic Memory in the Fe8 High Spin Molecule by
Muon Spin Rotation
|
11 pages, 5 figures
|
Phys. Rev. B 72, 2005, 092410
|
10.1103/PhysRevB.72.092410
| null |
cond-mat.other cond-mat.mes-hall
| null |
We developed a method to detect the quantum nature of high spin molecules
using muon spin rotation, and a three-step field cycle ending always with the
same field. We use this method to demonstrate that the Fe8 molecule can
remember 6 (possibly 8) different histories (bits). A wide range of fields can
be used to write a particular bit, and the information is stored in discrete
states. Therefore, Fe8 can be used as a model compound for Multi-bit Magnetic
Memory. Our experiment also paves the way for magnetic quantum tunneling
detection in films.
|
[{'version': 'v1', 'created': 'Thu, 3 Nov 2005 11:32:37 GMT'}]
|
2007-05-23
|
[array(['Shafir', 'Oren', ''], dtype=object)
array(['Keren', 'Amit', ''], dtype=object)
array(['Maegawa', 'Satoru', ''], dtype=object)
array(['Ueda', 'Miki', ''], dtype=object)
array(['Amato', 'Alex', ''], dtype=object)
array(['Baines', 'Chris', ''], dtype=object)]
|
5,445 |
1908.08480
|
Stavros Dimitrakoudis
|
Stavros Dimitrakoudis, Ian R. Mann
|
On the Close Correspondence between Storm-time ULF Wave Power and the
POES VLF Chorus Wave Amplitude Proxy
|
16 pages, 4 figures, 1 table, published in Geophysical Research
Letters. Supporting Information is included as a PDF in the source files
|
Geophysical Research Letters, 46 (2019)
|
10.1029/2018GL081317
| null |
physics.space-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Ground-based Pc5 ULF wave power in multiple ground-based meridians is
compared to the VLF wave amplitude proxy, derived from POES precipitation, for
the 33 storms studied by Li et al. [2015]. The results reveal common L-shell
and time profiles for the ULF waves and VLF proxy for every single storm,
especially at $L\leq 6$, and identical discrimination between efficient and
inefficient radiation belt electron acceleration. The observations imply either
ULF waves play a role in driving precipitation which is falsely interpreted as
VLF wave power in the proxy, ULF waves drive VLF waves (the reverse being
energetically unfeasible), or both have a common driver with nearly identical
L-shell and time-dependence. Global ground-based ULF wave power coherence
implies a small number of meridians can be used to estimate storm-time radial
diffusion coefficients. However, the strong correspondence between ULF wave
power and VLF wave proxy complicates causative assessments of electron
acceleration.
|
[{'version': 'v1', 'created': 'Thu, 22 Aug 2019 16:24:37 GMT'}]
|
2019-08-23
|
[array(['Dimitrakoudis', 'Stavros', ''], dtype=object)
array(['Mann', 'Ian R.', ''], dtype=object)]
|
5,446 |
2112.06147
|
Lin Wan
|
Lin Wan, Qianyan Jing, Zongyuan Sun, Chuang Zhang, Zhihang Li,
Yehansen Chen
|
Self-Supervised Modality-Aware Multiple Granularity Pre-Training for
RGB-Infrared Person Re-Identification
|
13 pages, 8 figures
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
RGB-Infrared person re-identification (RGB-IR ReID) aims to associate people
across disjoint RGB and IR camera views. Currently, state-of-the-art
performance of RGB-IR ReID is not as impressive as that of conventional ReID.
Much of that is due to the notorious modality bias training issue brought by
the single-modality ImageNet pre-training, which might yield RGB-biased
representations that severely hinder the cross-modality image retrieval. This
paper makes first attempt to tackle the task from a pre-training perspective.
We propose a self-supervised pre-training solution, named Modality-Aware
Multiple Granularity Learning (MMGL), which directly trains models from scratch
only on multi-modal ReID datasets, but achieving competitive results against
ImageNet pre-training, without using any external data or sophisticated tuning
tricks. First, we develop a simple-but-effective 'permutation recovery' pretext
task that globally maps shuffled RGB-IR images into a shared latent permutation
space, providing modality-invariant global representations for downstream ReID
tasks. Second, we present a part-aware cycle-contrastive (PCC) learning
strategy that utilizes cross-modality cycle-consistency to maximize agreement
between semantically similar RGB-IR image patches. This enables contrastive
learning for the unpaired multi-modal scenarios, further improving the
discriminability of local features without laborious instance augmentation.
Based on these designs, MMGL effectively alleviates the modality bias training
problem. Extensive experiments demonstrate that it learns better
representations (+8.03% Rank-1 accuracy) with faster training speed (converge
only in few hours) and higher data efficiency (<5% data size) than ImageNet
pre-training. The results also suggest it generalizes well to various existing
models, losses and has promising transferability across datasets. The code will
be released.
|
[{'version': 'v1', 'created': 'Sun, 12 Dec 2021 04:40:33 GMT'}
{'version': 'v2', 'created': 'Wed, 13 Apr 2022 08:30:44 GMT'}
{'version': 'v3', 'created': 'Tue, 26 Apr 2022 11:59:51 GMT'}]
|
2022-04-27
|
[array(['Wan', 'Lin', ''], dtype=object)
array(['Jing', 'Qianyan', ''], dtype=object)
array(['Sun', 'Zongyuan', ''], dtype=object)
array(['Zhang', 'Chuang', ''], dtype=object)
array(['Li', 'Zhihang', ''], dtype=object)
array(['Chen', 'Yehansen', ''], dtype=object)]
|
5,447 |
math/0409377
|
Tyakal Venkataramana N.
|
T.N.Venkataramana
|
On the g.c.d. of an infinite number of integers
|
9 pages
| null | null | null |
math.NT
| null |
We prove that the gcd of certain infinite number of integers associated to
generalised arithmetic progressions remains bounded independent of the
progression. Using this we also get bounds on the indices of certain congruence
subgroups of arithmetic groups.
|
[{'version': 'v1', 'created': 'Tue, 21 Sep 2004 03:32:47 GMT'}]
|
2007-05-23
|
[array(['Venkataramana', 'T. N.', ''], dtype=object)]
|
5,448 |
1209.3029
|
Graham Coop
|
Torsten G\"unther and Graham Coop
|
Robust identification of local adaptation from allele frequencies
|
27 pages, 7 figures
| null | null | null |
q-bio.PE stat.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Comparing allele frequencies among populations that differ in environment has
long been a tool for detecting loci involved in local adaptation. However, such
analyses are complicated by an imperfect knowledge of population allele
frequencies and neutral correlations of allele frequencies among populations
due to shared population history and gene flow. Here we develop a set of
methods to robustly test for unusual allele frequency patterns, and
correlations between environmental variables and allele frequencies while
accounting for these complications based on a Bayesian model previously
implemented in the software Bayenv. Using this model, we calculate a set of
`standardized allele frequencies' that allows investigators to apply tests of
their choice to multiple populations, while accounting for sampling and
covariance due to population history. We illustrate this first by showing that
these standardized frequencies can be used to calculate powerful tests to
detect non-parametric correlations with environmental variables, which are also
less prone to spurious results due to outlier populations. We then demonstrate
how these standardized allele frequencies can be used to construct a test to
detect SNPs that deviate strongly from neutral population structure. This test
is conceptually related to FST but should be more powerful as we account for
population history. We also extend the model to next-generation sequencing of
population pools, which is a cost-efficient way to estimate population allele
frequencies, but it implies an additional level of sampling noise. The utility
of these methods is demonstrated in simulations and by re-analyzing human SNP
data from the HGDP populations. An implementation of our method will be
available from http://gcbias.org.
|
[{'version': 'v1', 'created': 'Thu, 13 Sep 2012 20:27:09 GMT'}]
|
2012-09-17
|
[array(['Günther', 'Torsten', ''], dtype=object)
array(['Coop', 'Graham', ''], dtype=object)]
|
5,449 |
1410.7819
|
Alan Marscher
|
Alan P. Marscher
|
Time-Variable Linear Polarization as a Probe of the Physical Conditions
in the Compact Jets of Blazars
|
To appear in the Proceedings of IAU Symposium No. 313: "Extragalactic
Jets from Every Angle," Galapagos, Ecuador, 15-19 September 2014, F. Massaro,
C. C. Cheung, E. Lopez, and A. Siemiginowska (Eds.), Cambridge University
Press
| null |
10.1017/S1743921315002045
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A single measurement of linear polarization of a nonthermal source provides
direct information about the mean direction and level of ordering of the
magnetic field. Monitoring of the polarization in blazars, combined with
millimeter-wave VLBI imaging in both total and polarized intensity, has the
potential to determine the geometry of the magnetic field. This is a key probe
of the physical processes in the relativistic jet, such as ordered field
components, turbulence, magnetic reconnections, magnetic collimation and
acceleration of the jet flow, particle acceleration, and radiative processes
that produce extremely luminous, highly variable nonthermal emission.
Well-sampled monitoring observations of multi-waveband flux and radio-optical
polarization of blazars show a variety of behavior. In some cases, the observed
polarization patterns appear systematic, while in others randomness dominates.
Explanations involve helical magnetic fields, turbulence, and perhaps particle
acceleration that depends on the angle between the magnetic field and shock
fronts that might be present. Simulations from the author's TEMZ model, with
turbulent plasma crossing a standing conical shock in the jet, show that a
mixture of turbulent and toroidal magnetic field can produce the level of
polarization variability that is observed, even when the two field components
are roughly equal.
|
[{'version': 'v1', 'created': 'Tue, 28 Oct 2014 21:17:49 GMT'}]
|
2015-06-23
|
[array(['Marscher', 'Alan P.', ''], dtype=object)]
|
5,450 |
1901.10271
|
Jakob Wasserthal
|
Jakob Wasserthal, Peter Neher, Dusan Hirjak, Klaus H. Maier-Hein
|
Combined tract segmentation and orientation mapping for bundle-specific
tractography
| null | null |
10.1016/j.media.2019.101559
| null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
While the major white matter tracts are of great interest to numerous studies
in neuroscience and medicine, their manual dissection in larger cohorts from
diffusion MRI tractograms is time-consuming, requires expert knowledge and is
hard to reproduce. In previous work we presented tract orientation mapping
(TOM) as a novel concept for bundle-specific tractography. It is based on a
learned mapping from the original fiber orientation distribution function (FOD)
peaks to tract specific peaks, called tract orientation maps. Each tract
orientation map represents the voxel-wise principal orientation of one tract.
Here, we present an extension of this approach that combines TOM with accurate
segmentations of the tract outline and its start and end region. We also
introduce a custom probabilistic tracking algorithm that samples from a
Gaussian distribution with fixed standard deviation centered on each peak thus
enabling more complete trackings on the tract orientation maps than
deterministic tracking. These extensions enable the automatic creation of
bundle-specific tractograms with previously unseen accuracy. We show for 72
different bundles on high quality, low quality and phantom data that our
approach runs faster and produces more accurate bundle-specific tractograms
than 7 state of the art benchmark methods while avoiding cumbersome processing
steps like whole brain tractography, non-linear registration, clustering or
manual dissection. Moreover, we show on 17 datasets that our approach
generalizes well to datasets acquired with different scanners and settings as
well as with pathologies. The code of our method is openly available at
https://github.com/MIC-DKFZ/TractSeg.
|
[{'version': 'v1', 'created': 'Tue, 29 Jan 2019 13:25:50 GMT'}
{'version': 'v2', 'created': 'Wed, 25 Sep 2019 13:02:18 GMT'}]
|
2019-09-26
|
[array(['Wasserthal', 'Jakob', ''], dtype=object)
array(['Neher', 'Peter', ''], dtype=object)
array(['Hirjak', 'Dusan', ''], dtype=object)
array(['Maier-Hein', 'Klaus H.', ''], dtype=object)]
|
5,451 |
0903.0734
|
Sadegh Khochfar
|
S. Khochfar
|
Merger History of Galaxies and Disk+Bulge Formation
|
To appear in 'Galaxy Evolution: Emerging Insights and Future
Challenges' ASP Conference Series, 2009. Editors: Shardha Jogee, Lei Hao,
Guillermo Blanc & Irina Marinova
| null | null | null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We discuss the transitions of galaxy morphologies within the CDM paradigm
under the assumption of bulge formation in mergers and disk growth via cooling
of gas and subsequent star formation. Based on the relative importance of these
two competing processes it is possible to make predictions on the expected
morphological mix of galaxies. In particular we here discuss the generation of
massive disk galaxies with low bulge-to-total mass ratios. Our results indicate
that it is difficult to generate enough massive disk galaxies with B/T $< 0.2$
via major mergers and subsequent disk re-growth, if during the major merger
progenitor disks get disrupted completely. On average low B/T galaxies must
have had there last major merger at $z \ge 2$. The main limiting factor is the
ability to re-grow massive disks at late times after the last major merger of a
galaxy. Taking into account the contribution from minor mergers ($4 \ge
M_1/M_2$, $M_1 \ge M_2$) to the formation of bulges, we recover the right
fraction of massive low B/T disk galaxies, indicating that minor mergers play
an important role in the formation of massive low B/T disk galaxies.
|
[{'version': 'v1', 'created': 'Wed, 4 Mar 2009 11:19:20 GMT'}]
|
2009-03-05
|
[array(['Khochfar', 'S.', ''], dtype=object)]
|
5,452 |
gr-qc/9308018
|
Donald Marolf
|
Jorma Louko and Donald M. Marolf
|
Solution space of 2+1 gravity on ${\bf R} \times T^2$ in Witten's
connection formulation
|
23 pages, REVTeX v3.0, SU-GP-93/7-6, CGPG-93/8-3. (Discussion on the
gauge equivalence of degenerate and nondegenerate metrics extended.)
|
Class.Quant.Grav.11:311-330,1994
|
10.1088/0264-9381/11/2/005
| null |
gr-qc hep-th
| null |
We investigate the space ${\cal M}$ of classical solutions to Witten's
formulation of 2+1 gravity on the manifold ${\bf R} \times T^2$. ${\cal M}$ is
connected, unlike the spaces of classical solutions in the cases where $T^2$ is
replaced by a higher genus surface. Although ${\cal M}$ is neither Hausdorff
nor a manifold, removing from ${\cal M}$ a set of measure zero yields a
manifold which is naturally viewed as the cotangent bundle over a non-Hausdorff
base space~${\cal B}$. We discuss the relation of the various parts of ${\cal
M}$ to spacetime metrics, and various possibilities of quantizing~${\cal M}$.
There exist quantizations in which the exponentials of certain momentum
operators, when operating on states whose support is entirely on the part of
${\cal B}$ corresponding to conventional spacetime metrics, give states whose
support is entirely outside this part of~${\cal B}$. Similar results hold when
the gauge group ${\rm SO}_0(2,1)$ is replaced by ${\rm SU}(1,1)$.
|
[{'version': 'v1', 'created': 'Thu, 19 Aug 1993 22:51:00 GMT'}
{'version': 'v2', 'created': 'Wed, 17 Nov 1993 23:25:00 GMT'}]
|
2010-04-06
|
[array(['Louko', 'Jorma', ''], dtype=object)
array(['Marolf', 'Donald M.', ''], dtype=object)]
|
5,453 |
astro-ph/0110424
| null |
G.Brunetti, M.Bondi, A.Comastri, G.Setti
|
Chandra discovery of extended non-thermal emission in 3C 207 and the
spectrum of the relativistic electrons
|
16 pag. + 13 .PS figures (fig.2 color), Astronomy and Astrophysics,
in press
| null |
10.1051/0004-6361:20011462
| null |
astro-ph
| null |
We report on the {\it Chandra} discovery of large scale non--thermal emission
features in the double lobed SSRL quasar 3C 207 (z=0.684). These are: a diffuse
emission well correlated with the western radio lobe, a bright one sided jet
whose structure coincides with that of the eastern radio jet and an X-ray
source at the tip of the jet coincident with the hot spot of the eastern lobe.
The diffuse X-ray structure is best interpreted as inverse Compton (IC)
scattering of the IR photons from the nuclear source and provides direct
observational support to an earlier conjecture (Brunetti et al., 1997) that the
spectrum of the relativistic electrons in the lobes of radio galaxies extends
to much lower energies than those involved in the synchrotron radio emission.
The X-ray luminous and spatially resolved knot along the jet is of particular
interest: by combining VLA and {\it Chandra} data we show that a SSC model is
ruled out, while the X-ray spectrum and flux can be accounted for by the IC
scattering of the CMB photons (EIC) under the assumptions of a relatively
strong boosting and of an energy distribution of the relativistic electrons as
that expected from shock acceleration mechanisms. The X-ray properties of the
hot spot are consistent with a SSC model. In all cases we find that the
inferred magnetic field strength are lower, but close to the equipartition
values. The constraints on the energy distribution of the relativistic
electrons, imposed by the X-ray spectra of the observed features, are
discussed. To this aim we derive in the Appendices precise semi--analytic
formulae for the emissivities due to the SSC and EIC processes.
|
[{'version': 'v1', 'created': 'Thu, 18 Oct 2001 14:50:30 GMT'}]
|
2009-11-07
|
[array(['Brunetti', 'G.', ''], dtype=object)
array(['Bondi', 'M.', ''], dtype=object)
array(['Comastri', 'A.', ''], dtype=object)
array(['Setti', 'G.', ''], dtype=object)]
|
5,454 |
2305.03139
|
Fabio Pavanello
|
Fabio Pavanello, Cedric Marchand, Ian O'Connor, Regis Orobtchouk,
Fabien Mandorlo, Xavier Letartre, Sebastien Cueff, Elena Ioana Vatajelu,
Giorgio Di Natale, Benoit Cluzel, Aurelien Coillet, Benoit Charbonnier,
Pierre Noe, Frantisek Kavan, Martin Zoldak, Michal Szaj, Peter Bienstman,
Thomas Van Vaerenbergh, Ulrich Ruhrmair, Paulo Flores, Luis Guerra e Silva,
Ricardo Chaves, Luis-Miguel Silveira, Mariano Ceccato, Dimitris Gizopoulos,
George Papadimitriou, Vasileios Karakostas, Axel Brando, Francisco J.Cazorla,
Ramon Canal, Pau Closas, Adria Gusi-Amigo, Paolo Crovetti, Alessio Carpegna,
Tzamn Melendez Carmona, Stefano Di Carlo, Alessandro Savino
|
NEUROPULS: NEUROmorphic energy-efficient secure accelerators based on
Phase change materials aUgmented siLicon photonicS
|
10 pages, 2 figures, conference
| null | null | null |
cs.AR eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This special session paper introduces the Horizon Europe NEUROPULS project,
which targets the development of secure and energy-efficient RISC-V interfaced
neuromorphic accelerators using augmented silicon photonics technology. Our
approach aims to develop an augmented silicon photonics platform, an
FPGA-powered RISC-V-connected computing platform, and a complete simulation
platform to demonstrate the neuromorphic accelerator capabilities. In
particular, their main advantages and limitations will be addressed concerning
the underpinning technology for each platform. Then, we will discuss three
targeted use cases for edge-computing applications: Global National Satellite
System (GNSS) anti-jamming, autonomous driving, and anomaly detection in edge
devices. Finally, we will address the reliability and security aspects of the
stand-alone accelerator implementation and the project use cases.
|
[{'version': 'v1', 'created': 'Thu, 4 May 2023 20:43:24 GMT'}]
|
2023-05-08
|
[array(['Pavanello', 'Fabio', ''], dtype=object)
array(['Marchand', 'Cedric', ''], dtype=object)
array(["O'Connor", 'Ian', ''], dtype=object)
array(['Orobtchouk', 'Regis', ''], dtype=object)
array(['Mandorlo', 'Fabien', ''], dtype=object)
array(['Letartre', 'Xavier', ''], dtype=object)
array(['Cueff', 'Sebastien', ''], dtype=object)
array(['Vatajelu', 'Elena Ioana', ''], dtype=object)
array(['Di Natale', 'Giorgio', ''], dtype=object)
array(['Cluzel', 'Benoit', ''], dtype=object)
array(['Coillet', 'Aurelien', ''], dtype=object)
array(['Charbonnier', 'Benoit', ''], dtype=object)
array(['Noe', 'Pierre', ''], dtype=object)
array(['Kavan', 'Frantisek', ''], dtype=object)
array(['Zoldak', 'Martin', ''], dtype=object)
array(['Szaj', 'Michal', ''], dtype=object)
array(['Bienstman', 'Peter', ''], dtype=object)
array(['Van Vaerenbergh', 'Thomas', ''], dtype=object)
array(['Ruhrmair', 'Ulrich', ''], dtype=object)
array(['Flores', 'Paulo', ''], dtype=object)
array(['Silva', 'Luis Guerra e', ''], dtype=object)
array(['Chaves', 'Ricardo', ''], dtype=object)
array(['Silveira', 'Luis-Miguel', ''], dtype=object)
array(['Ceccato', 'Mariano', ''], dtype=object)
array(['Gizopoulos', 'Dimitris', ''], dtype=object)
array(['Papadimitriou', 'George', ''], dtype=object)
array(['Karakostas', 'Vasileios', ''], dtype=object)
array(['Brando', 'Axel', ''], dtype=object)
array(['Cazorla', 'Francisco J.', ''], dtype=object)
array(['Canal', 'Ramon', ''], dtype=object)
array(['Closas', 'Pau', ''], dtype=object)
array(['Gusi-Amigo', 'Adria', ''], dtype=object)
array(['Crovetti', 'Paolo', ''], dtype=object)
array(['Carpegna', 'Alessio', ''], dtype=object)
array(['Carmona', 'Tzamn Melendez', ''], dtype=object)
array(['Di Carlo', 'Stefano', ''], dtype=object)
array(['Savino', 'Alessandro', ''], dtype=object)]
|
5,455 |
1510.09167
|
Bernd Krusche
|
M. Dieterle, M. Oberle, J. Ahrens, J.R.M. Annand, H.J. Arends, K.
Bantawa, P.A. Bartolome, R. Beck, V. Bekrenev, H. Bergh\"auser, A. Braghieri,
D. Branford, W.J. Briscoe, J. Brudvik, S. Cherepnya, S. Costanza, B.
Demissie, E.J. Downie, P. Drexler, L.V. Fil'kov, A. Fix, S. Garni, D.I.
Glazier, D. Hamilton, E. Heid, D. Hornidge, D. Howdle, G.M. Huber, O. Jahn,
T.C. Jude, A. K\"aser, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M.
Korolija, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi,
J. Mancell, D.M. Manley, Z. Marinides, J.C. McGeorge, E. McNicoll, D.
Mekterovic, V. Metag, S. Micanovic, D.G. Middleton, A. Mushkarenkov, A.
Nikolaev, R. Novotny, M. Ostrick, P. Otte, B. Oussena, P. Pedroni, F. Pheron,
A. Polonski, S. Prakhov, J. Robinson, T. Rostomyan, S. Schumann, M.H. Sikora,
D.I. Sober, A. Starostin, Th. Strub, I. Supek, M. Thiel, A. Thomas, M.
Unverzagt, N.K. Walford, D.P. Watts, D. Werthm\"uller, L. Witthauer
|
Photoproduction of $\pi^0$-pairs off protons and off neutrons
|
accepted for publication in Eur. Phys. J. A
|
Eur. Phys. J. A 51 (2015) 142
| null | null |
nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Total cross sections, angular distributions, and invariant-mass distributions
have been measured for the photoproduction of $\pi^0\pi^0$ pairs off free
protons and off nucleons bound in the deuteron. The experiments were performed
at the MAMI accelerator facility in Mainz using the Glasgow photon tagging
spectrometer and the Crystal Ball/TAPS detector. The accelerator delivered
electron beams of 1508 and 1557~MeV, which produced bremsstrahlung in thin
radiator foils. The tagged photon beam covered energies up to 1400~MeV. The
data from the free proton target are in good agreement with previous
measurements and were only used to test the analysis procedures. The results
for differential cross sections (angular distributions and invariant-mass
distributions) for free and quasi-free protons are almost identical in shape,
but differ in absolute magnitude up to 15\%. Thus, moderate final-state
interaction effects are present. The data for quasi-free neutrons are similar
to the proton data in the second resonance region (final state invariant masses
up to $\approx$1550~MeV), where both reactions are dominated by the
$N(1520)3/2^-\rightarrow \Delta(1232)3/2^+\pi$ decay. At higher energies,
angular and invariant-mass distributions are different. A simple analysis of
the shapes of the invariant-mass distributions in the third resonance region is
consistent with strong contributions of an $N^{\star}\rightarrow N\sigma$ decay
for the proton, while the reaction is dominated by a sequential decay via a
$\Delta\pi$ intermediate state for the neutron. The data are compared to
predictions from the Two-Pion-MAID model and the Bonn-Gatchina coupled channel
analysis.
|
[{'version': 'v1', 'created': 'Fri, 30 Oct 2015 17:25:17 GMT'}]
|
2016-08-07
|
[array(['Dieterle', 'M.', ''], dtype=object)
array(['Oberle', 'M.', ''], dtype=object)
array(['Ahrens', 'J.', ''], dtype=object)
array(['Annand', 'J. R. M.', ''], dtype=object)
array(['Arends', 'H. J.', ''], dtype=object)
array(['Bantawa', 'K.', ''], dtype=object)
array(['Bartolome', 'P. A.', ''], dtype=object)
array(['Beck', 'R.', ''], dtype=object)
array(['Bekrenev', 'V.', ''], dtype=object)
array(['Berghäuser', 'H.', ''], dtype=object)
array(['Braghieri', 'A.', ''], dtype=object)
array(['Branford', 'D.', ''], dtype=object)
array(['Briscoe', 'W. J.', ''], dtype=object)
array(['Brudvik', 'J.', ''], dtype=object)
array(['Cherepnya', 'S.', ''], dtype=object)
array(['Costanza', 'S.', ''], dtype=object)
array(['Demissie', 'B.', ''], dtype=object)
array(['Downie', 'E. J.', ''], dtype=object)
array(['Drexler', 'P.', ''], dtype=object)
array(["Fil'kov", 'L. V.', ''], dtype=object)
array(['Fix', 'A.', ''], dtype=object)
array(['Garni', 'S.', ''], dtype=object)
array(['Glazier', 'D. I.', ''], dtype=object)
array(['Hamilton', 'D.', ''], dtype=object)
array(['Heid', 'E.', ''], dtype=object)
array(['Hornidge', 'D.', ''], dtype=object)
array(['Howdle', 'D.', ''], dtype=object)
array(['Huber', 'G. M.', ''], dtype=object)
array(['Jahn', 'O.', ''], dtype=object)
array(['Jude', 'T. C.', ''], dtype=object)
array(['Käser', 'A.', ''], dtype=object)
array(['Kashevarov', 'V. L.', ''], dtype=object)
array(['Keshelashvili', 'I.', ''], dtype=object)
array(['Kondratiev', 'R.', ''], dtype=object)
array(['Korolija', 'M.', ''], dtype=object)
array(['Krusche', 'B.', ''], dtype=object)
array(['Lisin', 'V.', ''], dtype=object)
array(['Livingston', 'K.', ''], dtype=object)
array(['MacGregor', 'I. J. D.', ''], dtype=object)
array(['Maghrbi', 'Y.', ''], dtype=object)
array(['Mancell', 'J.', ''], dtype=object)
array(['Manley', 'D. M.', ''], dtype=object)
array(['Marinides', 'Z.', ''], dtype=object)
array(['McGeorge', 'J. C.', ''], dtype=object)
array(['McNicoll', 'E.', ''], dtype=object)
array(['Mekterovic', 'D.', ''], dtype=object)
array(['Metag', 'V.', ''], dtype=object)
array(['Micanovic', 'S.', ''], dtype=object)
array(['Middleton', 'D. G.', ''], dtype=object)
array(['Mushkarenkov', 'A.', ''], dtype=object)
array(['Nikolaev', 'A.', ''], dtype=object)
array(['Novotny', 'R.', ''], dtype=object)
array(['Ostrick', 'M.', ''], dtype=object)
array(['Otte', 'P.', ''], dtype=object)
array(['Oussena', 'B.', ''], dtype=object)
array(['Pedroni', 'P.', ''], dtype=object)
array(['Pheron', 'F.', ''], dtype=object)
array(['Polonski', 'A.', ''], dtype=object)
array(['Prakhov', 'S.', ''], dtype=object)
array(['Robinson', 'J.', ''], dtype=object)
array(['Rostomyan', 'T.', ''], dtype=object)
array(['Schumann', 'S.', ''], dtype=object)
array(['Sikora', 'M. H.', ''], dtype=object)
array(['Sober', 'D. I.', ''], dtype=object)
array(['Starostin', 'A.', ''], dtype=object)
array(['Strub', 'Th.', ''], dtype=object)
array(['Supek', 'I.', ''], dtype=object)
array(['Thiel', 'M.', ''], dtype=object)
array(['Thomas', 'A.', ''], dtype=object)
array(['Unverzagt', 'M.', ''], dtype=object)
array(['Walford', 'N. K.', ''], dtype=object)
array(['Watts', 'D. P.', ''], dtype=object)
array(['Werthmüller', 'D.', ''], dtype=object)
array(['Witthauer', 'L.', ''], dtype=object)]
|
5,456 |
1107.1284
|
Sinya Aoki
|
Sinya Aoki (for HAL QCD Collaboration)
|
Hadron interactions in lattice QCD
|
52 pages, 65 figures, Review to appear in "Progress in Particle and
Nuclear Physics"
| null |
10.1016/j.ppnp.2011.07.001
| null |
hep-lat nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Progress on the potential method, recently proposed to investigate hadron
interactions in lattice QCD, is reviewed. The strategy to extract the potential
in lattice QCD is explained in detail. The method is applied to extract $NN$
potentials, hyperon potentials and the meson-baryon potentials. A theoretical
investigation is made to understand the origin of the repulsive core using the
operator product expansion. Some recent extensions of the method are also
discussed.
|
[{'version': 'v1', 'created': 'Thu, 7 Jul 2011 02:37:27 GMT'}]
|
2015-05-28
|
[array(['Aoki', 'Sinya', '', 'for HAL QCD Collaboration'], dtype=object)]
|
5,457 |
1407.0430
|
Hua Xiao
|
Guangchen Wang, Hua Xiao and Jie Xiong
|
A kind of linear quadratic non-zero sum differential game of backward
stochastic differential equation with asymmetric information
|
19 Pages
| null | null | null |
math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper focuses on a kind of linear quadratic non-zero sum differential
game driven by backward stochastic differential equation with asymmetric
information, which is a natural continuation of Wang and Yu [IEEE TAC (2010)
55: 1742-1747, Automatica (2012) 48: 342-352]. Different from Wang and Yu [IEEE
TAC (2010) 55: 1742-1747, Automatica (2012) 48: 342-352], novel motivations for
studying this kind of game are provided. Some feedback Nash equilibrium points
are uniquely obtained by forward-backward stochastic differential equations,
their filters and the corresponding Riccati equations with Markovian setting.
|
[{'version': 'v1', 'created': 'Wed, 2 Jul 2014 00:22:37 GMT'}
{'version': 'v2', 'created': 'Fri, 8 Jan 2016 19:27:37 GMT'}
{'version': 'v3', 'created': 'Fri, 3 Mar 2017 10:35:17 GMT'}]
|
2017-03-06
|
[array(['Wang', 'Guangchen', ''], dtype=object)
array(['Xiao', 'Hua', ''], dtype=object)
array(['Xiong', 'Jie', ''], dtype=object)]
|
5,458 |
2106.08763
|
Judith Medina Pardell
|
J. Medina Pardell, R. Herrero, M. Botey and K. Staliunas
|
Non-Hermitian arrangement for stable semiconductor laser arrays
| null | null | null | null |
physics.optics physics.app-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We propose and explore a physical mechanism for the stabilization of the
complex spatiotemporal dynamics in arrays (bars) of broad area laser diodes
taking advantage of the symmetry breaking in non-Hermitian potentials. We show
that such stabilization can be achieved by specific pump and index profiles
leading to a PT-symmetric coupling between nearest neighboring lasers within
the semiconductor bar. A numerical analysis is performed using a complete
(2+1)-dimensional space-temporal model, including transverse and longitudinal
spatial degrees of freedom and temporal evolution of the electric field and
carriers. We show regimes of temporal stabilization and light emission spatial
redistribution and enhancement. We also consider a simplified (1+1)-dimensional
model for an array of lasers holding the proposed non-Hermitian coupling with a
global axisymmetric geometry. We numerically demonstrate a two-fold benefit:
the control over the temporal dynamics over the EELs bar and the field
concentration on the central lasers leading to a brighter output beam,
facilitating a direct coupling to an optical fiber.
|
[{'version': 'v1', 'created': 'Wed, 16 Jun 2021 13:18:10 GMT'}]
|
2021-06-17
|
[array(['Pardell', 'J. Medina', ''], dtype=object)
array(['Herrero', 'R.', ''], dtype=object)
array(['Botey', 'M.', ''], dtype=object)
array(['Staliunas', 'K.', ''], dtype=object)]
|
5,459 |
hep-th/0008027
|
Parameswaran Nair
|
V.P. Nair
|
Quantum Mechanics on a Noncommutative Brane in M(atrix) Theory
|
Minor changes, report number changed, references added, 9 pages,
LaTeX
|
Phys.Lett. B505 (2001) 249-254
|
10.1016/S0370-2693(01)00338-0
|
CCNY-HEP 00/3, RU-00-8-B
|
hep-th
| null |
We consider the quantum mechanics of a particle on a noncommutative
two-sphere with the coordinates obeying an SU(2)-algebra. The momentum operator
can be constructed in terms of an $SU(2)\times SU(2)$-extension and the
Heisenberg algebra recovered in the smooth manifold limit. Similar
considerations apply to the more general SU(n) case.
|
[{'version': 'v1', 'created': 'Wed, 2 Aug 2000 19:11:06 GMT'}
{'version': 'v2', 'created': 'Tue, 14 Nov 2000 03:03:02 GMT'}]
|
2016-09-06
|
[array(['Nair', 'V. P.', ''], dtype=object)]
|
5,460 |
1912.10222
|
Kazuhisa Ogawa
|
Kazuhisa Ogawa, Hirokazu Kobayashi, and Akihisa Tomita
|
Operational formulation of weak values without probe systems
|
13 pages, 7 figures
|
Phys. Rev. A 101, 042117 (2020)
|
10.1103/PhysRevA.101.042117
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Weak values are the fundamental values for observables in a pre- and
post-selected system. Weak values are typically measured by weak measurement,
in which weak values appear in the change of not the pre- and post-selected
system but the probe system. This indirect characteristic of weak measurement
obscures the meaning of weak values for the pre- and post-selected system, in
contrast to conventional physical quantities, which have a clear operational
meaning. In this study, we operationally formulate weak values as the
sensitivity of post-selection probability amplitude to small transformation in
a pre- and post-selected system. This formulation of weak values, which is free
from the concept of probe shift assumed in weak measurement, gives a direct
interpretation of strange weak values for the pre- and post-selected system. We
further explain that this formulation can simplify weak-value measurement
experiments because no probe system is required.
|
[{'version': 'v1', 'created': 'Sat, 21 Dec 2019 08:52:24 GMT'}]
|
2020-04-21
|
[array(['Ogawa', 'Kazuhisa', ''], dtype=object)
array(['Kobayashi', 'Hirokazu', ''], dtype=object)
array(['Tomita', 'Akihisa', ''], dtype=object)]
|
5,461 |
1309.7698
|
EPTCS
|
Simone Righi (MTA TK "Lend\"ulet" Research Center for Educational and
Network studies (Recens)), K\'aroly Tak\'acs (MTA TK "Lend\"ulet" Research
Center for Educational and Network studies (Recens))
|
Signed Networks, Triadic Interactions and the Evolution of Cooperation
|
In Proceedings Wivace 2013, arXiv:1309.7122
|
EPTCS 130, 2013, pp. 104-107
|
10.4204/EPTCS.130.17
| null |
cs.SI cs.GT cs.NE physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We outline a model to study the evolution of cooperation in a population of
agents playing the prisoner's dilemma in signed networks. We highlight that if
only dyadic interactions are taken into account, cooperation never evolves.
However, when triadic considerations are introduced, a window of opportunity
for emergence of cooperation as a stable behaviour emerges.
|
[{'version': 'v1', 'created': 'Mon, 30 Sep 2013 01:07:06 GMT'}]
|
2013-10-01
|
[array(['Righi', 'Simone', '',
'MTA TK "Lendület" Research Center for Educational and\n Network studies'],
dtype=object)
array(['Takács', 'Károly', '',
'MTA TK "Lendület" Research\n Center for Educational and Network studies'],
dtype=object) ]
|
5,462 |
1212.2599
|
Sofiane Faci
|
Sofiane Faci
|
Constructing conformally invariant equations by using Weyl geometry
|
13 pages, no figures
|
Class. Quantum Grav. 30 (2013) 115005
|
10.1088/0264-9381/30/11/115005
| null |
hep-th gr-qc math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a simple, systematic and practical method to construct conformally
invariant equations in arbitrary Riemann spaces.
This method that we call "Weyl-to-Riemann" is based on two features of Weyl
geometry. i) A Weyl space is defined by the metric tensor and the Weyl vector
$W$, it becomes equivalent to a Riemann space when $W$ is gradient. ii) Any
homogeneous differential equation written in a Weyl space by means of the Weyl
connection is conformally invariant. The Weyl-to-Riemann method selects those
equations whose conformal invariance is preserved when reducing to a Riemann
space. Applications to scalar, vector and spin-2 fields are presented, which
demonstrates the efficiency of the present method. In particular, a new
conformally invariant spin-2 field equation is exhibited. This equation extends
Grishchuk-Yudin's equation and fixes its limitations since it does not require
the Lorenz gauge. Moreover this equation reduces to the Drew-Gegenberg and
Deser-Nepomechie equations in respectively Minkowski and de Sitter spaces.
|
[{'version': 'v1', 'created': 'Tue, 11 Dec 2012 19:51:13 GMT'}]
|
2013-05-06
|
[array(['Faci', 'Sofiane', ''], dtype=object)]
|
5,463 |
2104.06582
|
Braulio Villegas Martinez Ph.D.
|
B.M. Villegas-Mart\'inez, H.M. Moya-Cessa and F. Soto-Eguibar
|
Approximate solutions for the ion-laser interaction in the high
intensity regime: Matrix method perturbative analysis
|
14 pages, 4 figures
| null | null | null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We provide an explicit expression for the second-order perturbative solution
of a single trapped-ion interacting with a laser field in the strong excitation
regime. From the perturbative analytical solution, based on a matrix method and
a final normalization of the perturbed solutions, we show that the probability
to find the ion in its excited state fits well with former results.
|
[{'version': 'v1', 'created': 'Wed, 14 Apr 2021 02:02:18 GMT'}]
|
2021-04-15
|
[array(['Villegas-Martínez', 'B. M.', ''], dtype=object)
array(['Moya-Cessa', 'H. M.', ''], dtype=object)
array(['Soto-Eguibar', 'F.', ''], dtype=object)]
|
5,464 |
2007.10497
|
Shayan Hassantabar
|
Shayan Hassantabar, Novati Stefano, Vishweshwar Ghanakota, Alessandra
Ferrari, Gregory N. Nicola, Raffaele Bruno, Ignazio R. Marino, Kenza
Hamidouche, and Niraj K. Jha
|
CovidDeep: SARS-CoV-2/COVID-19 Test Based on Wearable Medical Sensors
and Efficient Neural Networks
|
11 pages, 3 figures
| null | null | null |
cs.HC cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The novel coronavirus (SARS-CoV-2) has led to a pandemic. The current testing
regime based on Reverse Transcription-Polymerase Chain Reaction for SARS-CoV-2
has been unable to keep up with testing demands, and also suffers from a
relatively low positive detection rate in the early stages of the resultant
COVID-19 disease. Hence, there is a need for an alternative approach for
repeated large-scale testing of SARS-CoV-2/COVID-19. We propose a framework
called CovidDeep that combines efficient DNNs with commercially available WMSs
for pervasive testing of the virus. We collected data from 87 individuals,
spanning three cohorts including healthy, asymptomatic, and symptomatic
patients. We trained DNNs on various subsets of the features automatically
extracted from six WMS and questionnaire categories to perform ablation studies
to determine which subsets are most efficacious in terms of test accuracy for a
three-way classification. The highest test accuracy obtained was 98.1%. We also
augmented the real training dataset with a synthetic training dataset drawn
from the same probability distribution to impose a prior on DNN weights and
leveraged a grow-and-prune synthesis paradigm to learn both DNN architecture
and weights. This boosted the accuracy of the various DNNs further and
simultaneously reduced their size and floating-point operations.
|
[{'version': 'v1', 'created': 'Mon, 20 Jul 2020 21:47:28 GMT'}
{'version': 'v2', 'created': 'Tue, 28 Jul 2020 14:23:38 GMT'}
{'version': 'v3', 'created': 'Wed, 28 Oct 2020 23:12:41 GMT'}]
|
2020-10-30
|
[array(['Hassantabar', 'Shayan', ''], dtype=object)
array(['Stefano', 'Novati', ''], dtype=object)
array(['Ghanakota', 'Vishweshwar', ''], dtype=object)
array(['Ferrari', 'Alessandra', ''], dtype=object)
array(['Nicola', 'Gregory N.', ''], dtype=object)
array(['Bruno', 'Raffaele', ''], dtype=object)
array(['Marino', 'Ignazio R.', ''], dtype=object)
array(['Hamidouche', 'Kenza', ''], dtype=object)
array(['Jha', 'Niraj K.', ''], dtype=object)]
|
5,465 |
1804.07062
|
Jiawei Su <
|
Jiawei Su, Danilo Vasconcellos Vargas, Kouichi Sakurai
|
Attacking Convolutional Neural Network using Differential Evolution
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The output of Convolutional Neural Networks (CNN) has been shown to be
discontinuous which can make the CNN image classifier vulnerable to small
well-tuned artificial perturbations. That is, images modified by adding such
perturbations(i.e. adversarial perturbations) that make little difference to
human eyes, can completely alter the CNN classification results. In this paper,
we propose a practical attack using differential evolution(DE) for generating
effective adversarial perturbations. We comprehensively evaluate the
effectiveness of different types of DEs for conducting the attack on different
network structures. The proposed method is a black-box attack which only
requires the miracle feedback of the target CNN systems. The results show that
under strict constraints which simultaneously control the number of pixels
changed and overall perturbation strength, attacking can achieve 72.29%, 78.24%
and 61.28% non-targeted attack success rates, with 88.68%, 99.85% and 73.07%
confidence on average, on three common types of CNNs. The attack only requires
modifying 5 pixels with 20.44, 14.76 and 22.98 pixel values distortion. Thus,
the result shows that the current DNNs are also vulnerable to such simpler
black-box attacks even under very limited attack conditions.
|
[{'version': 'v1', 'created': 'Thu, 19 Apr 2018 10:05:52 GMT'}]
|
2018-04-20
|
[array(['Su', 'Jiawei', ''], dtype=object)
array(['Vargas', 'Danilo Vasconcellos', ''], dtype=object)
array(['Sakurai', 'Kouichi', ''], dtype=object)]
|
5,466 |
1408.5224
|
Alexander Veit
|
Boris Khoromskij and Alexander Veit
|
Efficient computation of highly oscillatory integrals by using QTT
tensor approximation
|
20 pages
| null | null | null |
math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a new method for the efficient approximation of a class of highly
oscillatory weighted integrals where the oscillatory function depends on the
frequency parameter $\omega \geq 0$, typically varying in a large interval. Our
approach is based, for fixed but arbitrary oscillator, on the pre-computation
and low-parametric approximation of certain $\omega$-dependent prototype
functions whose evaluation leads in a straightforward way to recover the target
integral. The difficulty that arises is that these prototype functions consist
of oscillatory integrals and are itself oscillatory which makes them both
difficult to evaluate and to approximate. Here we use the quantized-tensor
train (QTT) approximation method for functional $m$-vectors of logarithmic
complexity in $m$ in combination with a cross-approximation scheme for TT
tensors. This allows the accurate approximation and efficient storage of these
functions in the wide range of grid and frequency parameters. Numerical
examples illustrate the efficiency of the QTT-based numerical integration
scheme on various examples in one and several spatial dimensions.
|
[{'version': 'v1', 'created': 'Fri, 22 Aug 2014 07:32:54 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Oct 2014 15:22:43 GMT'}
{'version': 'v3', 'created': 'Tue, 24 Mar 2015 18:18:30 GMT'}]
|
2015-03-25
|
[array(['Khoromskij', 'Boris', ''], dtype=object)
array(['Veit', 'Alexander', ''], dtype=object)]
|
5,467 |
quant-ph/0409098
|
Daniel Alonso
|
Daniel Alonso and In\'es de Vega
|
Multiple-time correlation functions for non-Markovian interaction:
Beyond the Quantum Regression Theorem
|
Submitted (04 Jul 04)
|
Physical Review Letters 94, 200403 (2005)
|
10.1103/PhysRevLett.94.200403
| null |
quant-ph
| null |
Multiple time correlation functions are found in the dynamical description of
different phenomena. They encode and describe the fluctuations of the dynamical
variables of a system. In this paper we formulate a theory of non-Markovian
multiple-time correlation functions (MTCF) for a wide class of systems. We
derive the dynamical equation of the {\it reduced propagator}, an object that
evolve state vectors of the system conditioned to the dynamics of its
environment, which is not necessarily at the vacuum state at the initial time.
Such reduced propagator is the essential piece to obtain multiple-time
correlation functions. An average over the different environmental histories of
the reduced propagator permits us to obtain the evolution equations of the
multiple-time correlation functions. We also study the evolution of MTCF within
the weak coupling limit and it is shown that the multiple-time correlation
function of some observables satisfy the Quantum Regression Theorem (QRT),
whereas other correlations do not. We set the conditions under which the
correlations satisfy the QRT. We illustrate the theory in two different cases;
first, solving an exact model for which the MTCF are explicitly given, and
second, presenting the results of a numerical integration for a system coupled
with a dissipative environment through a non-diagonal interaction.
|
[{'version': 'v1', 'created': 'Thu, 16 Sep 2004 08:59:53 GMT'}]
|
2009-11-10
|
[array(['Alonso', 'Daniel', ''], dtype=object)
array(['de Vega', 'Inés', ''], dtype=object)]
|
5,468 |
hep-ph/0508215
|
Fredrick Olness
|
Stefan Berge, Pavel M. Nadolsky, Fredrick I. Olness, C.-P. Yuan
|
q_T Uncertainties for W and Z Production
|
4 pages, 2 figures; contribution to the XIII International Workshop
on Deep Inelastic Scattering (DIS 2005)
| null |
10.1063/1.2122139
|
ANL-HEP-PR-05-67
|
hep-ph
| null |
Analysis of semi-inclusive DIS hadroproduction suggests broadening of
transverse momentum distributions at small x below 1E-3 ~ 1E-2 which can be
modeled in the Collins-Soper-Sterman formalism by a modification of impact
parameter dependent parton densities. We investigate these consequences for the
production of electroweak bosons at the Tevatron and the LHC. If substantial
small-x broadening is observed in forward Z boson production in the Tevatron
Run-2, it will strongly affect the predicted q_T distributions for W and Z
boson production at the LHC.
|
[{'version': 'v1', 'created': 'Mon, 22 Aug 2005 15:45:11 GMT'}]
|
2015-06-25
|
[array(['Berge', 'Stefan', ''], dtype=object)
array(['Nadolsky', 'Pavel M.', ''], dtype=object)
array(['Olness', 'Fredrick I.', ''], dtype=object)
array(['Yuan', 'C. -P.', ''], dtype=object)]
|
5,469 |
1403.5623
|
Davor Horvatic
|
B. Podobnik, D. Horvatic, M. Bertella, L. Feng, X. Huang, and B. Li
|
Systemic risk in dynamical networks with stochastic failure criterion
|
7 pages, 7 figures
| null |
10.1209/0295-5075/106/68003
| null |
q-fin.RM physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Complex non-linear interactions between banks and assets we model by two
time-dependent Erd\H{o}s Renyi network models where each node, representing
bank, can invest either to a single asset (model I) or multiple assets (model
II). We use dynamical network approach to evaluate the collective financial
failure---systemic risk---quantified by the fraction of active nodes. The
systemic risk can be calculated over any future time period, divided on
sub-periods, where within each sub-period banks may contiguously fail due to
links to either (i) assets or (ii) other banks, controlled by two parameters,
probability of internal failure $p$ and threshold $T_h$ ("solvency" parameter).
The systemic risk non-linearly increases with $p$ and decreases with average
network degree faster when all assets are equally distributed across banks than
if assets are randomly distributed. The more inactive banks each bank can
sustain (smaller $T_h$), the smaller the systemic risk---for some $T_h$ values
in I we report a discontinuity in systemic risk. When contiguous spreading
becomes stochastic (ii) controlled by probability $p_2$---a condition for the
bank to be solvent (active) is stochastic---the systemic risk decreases with
decreasing $p_2$. We analyse asset allocation for the U.S. banks.
|
[{'version': 'v1', 'created': 'Sat, 22 Mar 2014 07:47:09 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Apr 2014 11:03:59 GMT'}]
|
2015-06-19
|
[array(['Podobnik', 'B.', ''], dtype=object)
array(['Horvatic', 'D.', ''], dtype=object)
array(['Bertella', 'M.', ''], dtype=object)
array(['Feng', 'L.', ''], dtype=object)
array(['Huang', 'X.', ''], dtype=object)
array(['Li', 'B.', ''], dtype=object)]
|
5,470 |
cond-mat/9810279
|
Sebastien. Camalet
|
S.Camalet, F.Julicher, J.Prost
|
Self-organized Beating and Swimming of Internally Driven Filaments
|
8 pages, 2 figures, REVTeX
| null |
10.1103/PhysRevLett.82.1590
| null |
cond-mat.soft physics.bio-ph
| null |
We study a simple two-dimensional model for motion of an elastic filament
subject to internally generated stresses and show that wave-like propagating
shapes which can propel the filament can be induced by a self-organized
mechanism via a dynamic instability. The resulting patterns of motion do not
depend on the microscopic mechanism of the instability but only of the filament
rigidity and hydrodynamic friction. Our results suggest that simplified
systems, consisting only of molecular motors and filaments could be able to
show beating motion and self-propulsion.
|
[{'version': 'v1', 'created': 'Wed, 21 Oct 1998 17:21:18 GMT'}]
|
2019-08-17
|
[array(['Camalet', 'S.', ''], dtype=object)
array(['Julicher', 'F.', ''], dtype=object)
array(['Prost', 'J.', ''], dtype=object)]
|
5,471 |
2109.04655
|
Zhaojiang Lin
|
Zhaojiang Lin, Bing Liu, Andrea Madotto, Seungwhan Moon, Paul Crook,
Zhenpeng Zhou, Zhiguang Wang, Zhou Yu, Eunjoon Cho, Rajen Subba, Pascale Fung
|
Zero-Shot Dialogue State Tracking via Cross-Task Transfer
|
EMNLP 2021
| null | null | null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Zero-shot transfer learning for dialogue state tracking (DST) enables us to
handle a variety of task-oriented dialogue domains without the expense of
collecting in-domain data. In this work, we propose to transfer the
\textit{cross-task} knowledge from general question answering (QA) corpora for
the zero-shot DST task. Specifically, we propose TransferQA, a transferable
generative QA model that seamlessly combines extractive QA and multi-choice QA
via a text-to-text transformer framework, and tracks both categorical slots and
non-categorical slots in DST. In addition, we introduce two effective ways to
construct unanswerable questions, namely, negative question sampling and
context truncation, which enable our model to handle "none" value slots in the
zero-shot DST setting. The extensive experiments show that our approaches
substantially improve the existing zero-shot and few-shot results on MultiWoz.
Moreover, compared to the fully trained baseline on the Schema-Guided Dialogue
dataset, our approach shows better generalization ability in unseen domains.
|
[{'version': 'v1', 'created': 'Fri, 10 Sep 2021 03:57:56 GMT'}]
|
2021-09-13
|
[array(['Lin', 'Zhaojiang', ''], dtype=object)
array(['Liu', 'Bing', ''], dtype=object)
array(['Madotto', 'Andrea', ''], dtype=object)
array(['Moon', 'Seungwhan', ''], dtype=object)
array(['Crook', 'Paul', ''], dtype=object)
array(['Zhou', 'Zhenpeng', ''], dtype=object)
array(['Wang', 'Zhiguang', ''], dtype=object)
array(['Yu', 'Zhou', ''], dtype=object)
array(['Cho', 'Eunjoon', ''], dtype=object)
array(['Subba', 'Rajen', ''], dtype=object)
array(['Fung', 'Pascale', ''], dtype=object)]
|
5,472 |
2011.09293
|
Andrzej Marecki
|
A. Marecki, M. Jamrozy, J. Machalski, U. Pajdosz-Smierciak
|
Multifrequency study of a double-double radio galaxy J0028+0035
|
14 pages, 8 figures, matches the version published in MNRAS
|
MNRAS 501,853 (2021)
|
10.1093/mnras/staa3632
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the discovery of a double-double radio source (DDRS) J0028+0035. We
observed it with LOFAR, GMRT, and the VLA. By combining our observational data
with those from the literature, we gathered an appreciable set of radio flux
density measurements covering the range from 74 MHz to 14 GHz. This enabled us
to carry out an extensive review of physical properties of the source and its
dynamical evolution analysis. In particular, we found that, while the age of
the large-scale outer lobes is about 245 Myr, the renewal of the jet activity,
which is directly responsible for the double-double structure, took place only
about 3.6 Myr ago after about 11 Myr long period of quiescence. Another
important property typical for DDRSs and also present here is that the
injection spectral indices for the inner and the outer pair of lobes are
similar. The jet powers in J0028+0035 are similar too. Both these circumstances
support our inference that it is, in fact, a DDRS which was not recognized as
such so far because of the presence of a coincident compact object close to the
inner double so that the centre of J0028+0035 is apparently a triple.
|
[{'version': 'v1', 'created': 'Wed, 18 Nov 2020 14:03:33 GMT'}
{'version': 'v2', 'created': 'Thu, 17 Dec 2020 14:53:03 GMT'}]
|
2020-12-29
|
[array(['Marecki', 'A.', ''], dtype=object)
array(['Jamrozy', 'M.', ''], dtype=object)
array(['Machalski', 'J.', ''], dtype=object)
array(['Pajdosz-Smierciak', 'U.', ''], dtype=object)]
|
5,473 |
2304.14891
|
Antimo Palano
|
LHCb collaboration: R. Aaij, A.S.W. Abdelmotteleb, C. Abellan Beteta,
F. Abudin\'en, T. Ackernley, B. Adeva, M. Adinolfi, P. Adlarson, H.
Afsharnia, C. Agapopoulou, C.A. Aidala, Z. Ajaltouni, S. Akar, K. Akiba, P.
Albicocco, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero, Z.
Aliouche, P. Alvarez Cartelle, R. Amalric, S. Amato, J.L. Amey, Y. Amhis, L.
An, L. Anderlini, M. Andersson, A. Andreianov, M. Andreotti, D. Andreou, D.
Ao, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, M. Atzeni, B.
Audurier, I.B Bachiller Perea, S. Bachmann, M. Bachmayer, J.J. Back, A.
Bailly-reyre, P. Baladron Rodriguez, V. Balagura, W. Baldini, J. Baptista de
Souza Leite, M. Barbetti, R.J. Barlow, S. Barsuk, W. Barter, M. Bartolini, F.
Baryshnikov, J.M. Basels, G. Bassi, B. Batsukh, A. Battig, A. Bay, A. Beck,
M. Becker, F. Bedeschi, I.B. Bediaga, A. Beiter, S. Belin, V. Bellee, K.
Belous, I. Belov, I. Belyaev, G. Benane, G. Bencivenni, E. Ben-Haim, A.
Berezhnoy, R. Bernet, S. Bernet Andres, D. Berninghoff, H.C. Bernstein, C.
Bertella, A. Bertolin, C. Betancourt, F. Betti, Ia. Bezshyiko, J. Bhom, L.
Bian, M.S. Bieker, N.V. Biesuz, P. Billoir, A. Biolchini, M. Birch, F.C.R.
Bishop, A. Bitadze, A. Bizzeti, M.P. Blago, T. Blake, F. Blanc, J.E. Blank,
S. Blusk, D. Bobulska, V.B Bocharnikov, J.A. Boelhauve, O. Boente Garcia, T.
Boettcher, A. Boldyrev, C.S. Bolognani, R. Bolzonella, N. Bondar, F. Borgato,
S. Borghi, M. Borsato, J.T. Borsuk, S.A. Bouchiba, T.J.V. Bowcock, A. Boyer,
C. Bozzi, M.J. Bradley, S. Braun, A. Brea Rodriguez, N. Breer, J. Brodzicka,
A. Brossa Gonzalo, J. Brown, D. Brundu, A. Buonaura, L. Buonincontri, A.T.
Burke, C. Burr, A. Bursche, A. Butkevich, J.S. Butter, J. Buytaert, W.
Byczynski, S. Cadeddu, H. Cai, R. Calabrese, L. Calefice, S. Cali, M. Calvi,
M. Calvo Gomez, P. Campana, D.H. Campora Perez, A.F. Campoverde Quezada, S.
Capelli, L. Capriotti, A. Carbone, R. Cardinale, A. Cardini, P. Carniti, L.
Carus, A. Casais Vidal, R. Caspary, G. Casse, M. Cattaneo, G. Cavallero, V.
Cavallini, S. Celani, J. Cerasoli, D. Cervenkov, A.J. Chadwick, I.C Chahrour,
M.G. Chapman, M. Charles, Ph. Charpentier, C.A. Chavez Barajas, M.
Chefdeville, C. Chen, S. Chen, A. Chernov, S. Chernyshenko, V. Chobanova, S.
Cholak, M. Chrzaszcz, A. Chubykin, V. Chulikov, P. Ciambrone, M.F. Cicala, X.
Cid Vidal, G. Ciezarek, P. Cifra, G. Ciullo, P.E.L. Clarke, M. Clemencic,
H.V. Cliff, J. Closier, J.L. Cobbledick, V. Coco, J. Cogan, E. Cogneras, L.
Cojocariu, P. Collins, T. Colombo, L. Congedo, A. Contu, N. Cooke, I.
Corredoira, G. Corti, B. Couturier, D.C. Craik, M. Cruz Torres, R. Currie,
C.L. Da Silva, S. Dadabaev, L. Dai, X. Dai, E. Dall'Occo, J. Dalseno, C.
D'Ambrosio, J. Daniel, A. Danilina, P. d'Argent, J.E. Davies, A. Davis, O. De
Aguiar Francisco, J. de Boer, K. De Bruyn, S. De Capua, M. De Cian, U. De
Freitas Carneiro Da Graca, E. De Lucia, J.M. De Miranda, L. De Paula, M. De
Serio, D. De Simone, P. De Simone, F. De Vellis, J.A. de Vries, C.T. Dean, F.
Debernardis, D. Decamp, V. Dedu, L. Del Buono, B. Delaney, H.-P. Dembinski,
V. Denysenko, O. Deschamps, F. Dettori, B. Dey, P. Di Nezza, I. Diachkov, S.
Didenko, L. Dieste Maronas, S. Ding, V. Dobishuk, A. Dolmatov, C. Dong, A.M.
Donohoe, F. Dordei, A.C. dos Reis, L. Douglas, A.G. Downes, P. Duda, M.W.
Dudek, L. Dufour, V. Duk, P. Durante, M. M. Duras, J.M. Durham, D. Dutta, A.
Dziurda, A. Dzyuba, S. Easo, U. Egede, V. Egorychev, C. Eirea Orro, S.
Eisenhardt, E. Ejopu, S. Ek-In, L. Eklund, M.E Elashri, J. Ellbracht, S. Ely,
A. Ene, E. Epple, S. Escher, J. Eschle, S. Esen, T. Evans, F. Fabiano, L.N.
Falcao, Y. Fan, B. Fang, L. Fantini, M. Faria, S. Farry, D. Fazzini, L.F
Felkowski, M. Feo, M. Fernandez Gomez, A.D. Fernez, F. Ferrari, L. Ferreira
Lopes, F. Ferreira Rodrigues, S. Ferreres Sole, M. Ferrillo, M. Ferro-Luzzi,
S. Filippov, R.A. Fini, M. Fiorini, M. Firlej, K.M. Fischer, D.S. Fitzgerald,
C. Fitzpatrick, T. Fiutowski, F. Fleuret, M. Fontana, F. Fontanelli, R.
Forty, D. Foulds-Holt, V. Franco Lima, M. Franco Sevilla, M. Frank, E.
Franzoso, G. Frau, C. Frei, D.A. Friday, L.F Frontini, J. Fu, Q. Fuehring, T.
Fulghesu, E. Gabriel, G. Galati, M.D. Galati, A. Gallas Torreira, D. Galli,
S. Gambetta, M. Gandelman, P. Gandini, H.G Gao, Y. Gao, Y. Gao, M. Garau,
L.M. Garcia Martin, P. Garcia Moreno, J. Garc\'ia Pardi\~nas, B. Garcia
Plana, F.A. Garcia Rosales, L. Garrido, C. Gaspar, R.E. Geertsema, D. Gerick,
L.L. Gerken, E. Gersabeck, M. Gersabeck, T. Gershon, L. Giambastiani, V.
Gibson, H.K. Giemza, A.L. Gilman, M. Giovannetti, A. Giovent\`u, P. Gironella
Gironell, C. Giugliano, M.A. Giza, K. Gizdov, E.L. Gkougkousis, V.V.
Gligorov, C. G\"obel, E. Golobardes, D. Golubkov, A. Golutvin, A. Gomes, S.
Gomez Fernandez, F. Goncalves Abrantes, M. Goncerz, G. Gong, I.V. Gorelov, C.
Gotti, J.P. Grabowski, T. Grammatico, L.A. Granado Cardoso, E. Graug\'es, E.
Graverini, G. Graziani, A. T. Grecu, L.M. Greeven, N.A. Grieser, L. Grillo,
S. Gromov, B.R. Gruberg Cazon, C. Gu, M. Guarise, M. Guittiere, P. A.
G\"unther, E. Gushchin, A. Guth, Y. Guz, T. Gys, T. Hadavizadeh, C.
Hadjivasiliou, G. Haefeli, C. Haen, J. Haimberger, S.C. Haines, T.
Halewood-leagas, M.M. Halvorsen, P.M. Hamilton, J. Hammerich, Q. Han, X. Han,
S. Hansmann-Menzemer, L. Hao, N. Harnew, T. Harrison, C. Hasse, M. Hatch, J.
He, K. Heijhoff, F.H Hemmer, C. Henderson, R.D.L. Henderson, A.M. Hennequin,
K. Hennessy, L. Henry, J.H Herd, J. Heuel, A. Hicheur, D. Hill, M. Hilton,
S.E. Hollitt, J. Horswill, R. Hou, Y. Hou, J. Hu, J. Hu, W. Hu, X. Hu, W.
Huang, X. Huang, W. Hulsbergen, R.J. Hunter, M. Hushchyn, D. Hutchcroft, P.
Ibis, M. Idzik, D. Ilin, P. Ilten, A. Inglessi, A. Iniukhin, A. Ishteev, K.
Ivshin, R. Jacobsson, H. Jage, S.J. Jaimes Elles, S. Jakobsen, E. Jans, B.K.
Jashal, A. Jawahery, V. Jevtic, E. Jiang, X. Jiang, Y. Jiang, M. John, D.
Johnson, C.R. Jones, T.P. Jones, S.J Joshi, B. Jost, N. Jurik, I. Juszczak,
S. Kandybei, Y. Kang, M. Karacson, D. Karpenkov, M. Karpov, J.W. Kautz, F.
Keizer, D.M. Keller, M. Kenzie, T. Ketel, B. Khanji, A. Kharisova, S.
Kholodenko, G. Khreich, T. Kirn, V.S. Kirsebom, O. Kitouni, S. Klaver, N.
Kleijne, K. Klimaszewski, M.R. Kmiec, S. Koliiev, L. Kolk, A. Kondybayeva, A.
Konoplyannikov, P. Kopciewicz, R. Kopecna, P. Koppenburg, M. Korolev, I.
Kostiuk, O. Kot, S. Kotriakhova, A. Kozachuk, P. Kravchenko, L. Kravchuk, M.
Kreps, S. Kretzschmar, P. Krokovny, W. Krupa, W. Krzemien, J. Kubat, S.
Kubis, W. Kucewicz, M. Kucharczyk, V. Kudryavtsev, E.K Kulikova, A. Kupsc, D.
Lacarrere, G. Lafferty, A. Lai, A. Lampis, D. Lancierini, C. Landesa Gomez,
J.J. Lane, R. Lane, C. Langenbruch, J. Langer, O. Lantwin, T. Latham, F.
Lazzari, C. Lazzeroni, R. Le Gac, S.H. Lee, R. Lef\`evre, A. Leflat, S.
Legotin, P. Lenisa, O. Leroy, T. Lesiak, B. Leverington, A. Li, H. Li, K. Li,
P. Li, P.-R. Li, S. Li, T. Li, T. Li, Y. Li, Z. Li, X. Liang, C. Lin, T. Lin,
R. Lindner, V. Lisovskyi, R. Litvinov, G. Liu, H. Liu, K. Liu, Q. Liu, S.
Liu, A. Lobo Salvia, A. Loi, R. Lollini, J. Lomba Castro, I. Longstaff, J.H.
Lopes, A. Lopez Huertas, S. L\'opez Soli\~no, G.H. Lovell, Y. Lu, C.
Lucarelli, D. Lucchesi, S. Luchuk, M. Lucio Martinez, V. Lukashenko, Y. Luo,
A. Lupato, E. Luppi, A. Lusiani, K. Lynch, X.-R. Lyu, R. Ma, S. Maccolini, F.
Machefert, F. Maciuc, I. Mackay, V. Macko, L.R. Madhan Mohan, A. Maevskiy, D.
Maisuzenko, M.W. Majewski, J.J. Malczewski, S. Malde, B. Malecki, A. Malinin,
T. Maltsev, G. Manca, G. Mancinelli, C. Mancuso, R. Manera Escalero, D.
Manuzzi, C.A. Manzari, D. Marangotto, J.M. Maratas, J.F. Marchand, U.
Marconi, S. Mariani, C. Marin Benito, J. Marks, A.M. Marshall, P.J. Marshall,
G. Martelli, G. Martellotti, L. Martinazzoli, M. Martinelli, D. Martinez
Santos, F. Martinez Vidal, A. Massafferri, M. Materok, R. Matev, A. Mathad,
V. Matiunin, C. Matteuzzi, K.R. Mattioli, A. Mauri, E. Maurice, J. Mauricio,
M. Mazurek, M. McCann, L. Mcconnell, T.H. McGrath, N.T. McHugh, A. McNab, R.
McNulty, B. Meadows, G. Meier, D. Melnychuk, S. Meloni, M. Merk, A. Merli, L.
Meyer Garcia, D. Miao, H. Miao, M. Mikhasenko, D.A. Milanes, E. Millard, M.
Milovanovic, M.-N. Minard, A. Minotti, E. Minucci, T. Miralles, S.E.
Mitchell, B. Mitreska, D.S. Mitzel, A. Modak, A. M\"odden, R.A. Mohammed,
R.D. Moise, S. Mokhnenko, T. Momb\"acher, M. Monk, I.A. Monroy, S. Monteil,
G. Morello, M.J. Morello, M.P. Morgenthaler, J. Moron, A.B. Morris, A.G.
Morris, R. Mountain, H. Mu, E. Muhammad, F. Muheim, M. Mulder, K. M\"uller,
C.H. Murphy, D. Murray, R. Murta, P. Muzzetto, P. Naik, T. Nakada, R.
Nandakumar, T. Nanut, I. Nasteva, M. Needham, N. Neri, S. Neubert, N.
Neufeld, P. Neustroev, R. Newcombe, J. Nicolini, D. Nicotra, E.M. Niel, S.
Nieswand, N. Nikitin, N.S. Nolte, C. Normand, J. Novoa Fernandez, G.N Nowak,
C. Nunez, A. Oblakowska-Mucha, V. Obraztsov, T. Oeser, S. Okamura, R.
Oldeman, F. Oliva, C.J.G. Onderwater, R.H. O'Neil, J.M. Otalora Goicochea, T.
Ovsiannikova, P. Owen, A. Oyanguren, O. Ozcelik, K.O. Padeken, B. Pagare,
P.R. Pais, T. Pajero, A. Palano, M. Palutan, G. Panshin, L. Paolucci, A.
Papanestis, M. Pappagallo, L.L. Pappalardo, C. Pappenheimer, W. Parker, C.
Parkes, B. Passalacqua, G. Passaleva, A. Pastore, M. Patel, C. Patrignani,
C.J. Pawley, A. Pellegrino, M. Pepe Altarelli, S. Perazzini, D. Pereima, A.
Pereiro Castro, P. Perret, K. Petridis, A. Petrolini, S. Petrucci, M.
Petruzzo, H. Pham, A. Philippov, R. Piandani, L. Pica, M. Piccini, B.
Pietrzyk, G. Pietrzyk, M. Pili, D. Pinci, F. Pisani, M. Pizzichemi, V.
Placinta, J. Plews, M. Plo Casasus, F. Polci, M. Poli Lener, A. Poluektov, N.
Polukhina, I. Polyakov, E. Polycarpo, S. Ponce, D. Popov, S. Poslavskii, K.
Prasanth, L. Promberger, C. Prouve, V. Pugatch, V. Puill, G. Punzi, H.R. Qi,
W. Qian, N. Qin, S. Qu, R. Quagliani, N.V. Raab, B. Rachwal, J.H. Rademacker,
R. Rajagopalan, M. Rama, M. Ramos Pernas, M.S. Rangel, F. Ratnikov, G. Raven,
M. Rebollo De Miguel, F. Redi, J. Reich, F. Reiss, C. Remon Alepuz, Z. Ren,
P.K. Resmi, R. Ribatti, A.M. Ricci, S. Ricciardi, K. Richardson, M.
Richardson-Slipper, K. Rinnert, P. Robbe, G. Robertson, E. Rodrigues, E.
Rodriguez Fernandez, J.A. Rodriguez Lopez, E. Rodriguez Rodriguez, D.L. Rolf,
A. Rollings, P. Roloff, V. Romanovskiy, M. Romero Lamas, A. Romero Vidal,
J.D. Roth, M. Rotondo, M.S. Rudolph, T. Ruf, R.A. Ruiz Fernandez, J. Ruiz
Vidal, A. Ryzhikov, J. Ryzka, J.J. Saborido Silva, N. Sagidova, N. Sahoo, B.
Saitta, M. Salomoni, C. Sanchez Gras, I. Sanderswood, R. Santacesaria, C.
Santamarina Rios, M. Santimaria, L. Santoro, E. Santovetti, D. Saranin, G.
Sarpis, M. Sarpis, A. Sarti, C. Satriano, A. Satta, M. Saur, D. Savrina, H.
Sazak, L.G. Scantlebury Smead, A. Scarabotto, S. Schael, S. Scherl, A. M.
Schertz, M. Schiller, H. Schindler, M. Schmelling, B. Schmidt, S. Schmitt, O.
Schneider, A. Schopper, M. Schubiger, N. Schulte, S. Schulte, M.H. Schune, R.
Schwemmer, B. Sciascia, A. Sciuccati, S. Sellam, A. Semennikov, M. Senghi
Soares, A. Sergi, N. Serra, L. Sestini, A. Seuthe, Y. Shang, D.M. Shangase,
M. Shapkin, I. Shchemerov, L. Shchutska, T. Shears, L. Shekhtman, Z. Shen, S.
Sheng, V. Shevchenko, B. Shi, E.B. Shields, Y. Shimizu, E. Shmanin, R.
Shorkin, J.D. Shupperd, B.G. Siddi, R. Silva Coutinho, G. Simi, S. Simone, M.
Singla, N. Skidmore, R. Skuza, T. Skwarnicki, M.W. Slater, J.C. Smallwood,
J.G. Smeaton, E. Smith, K. Smith, M. Smith, A. Snoch, L. Soares Lavra, M.D.
Sokoloff, F.J.P. Soler, A. Solomin, A. Solovev, I. Solovyev, R. Song, F.L.
Souza De Almeida, B. Souza De Paula, B. Spaan, E. Spadaro Norella, E.
Spedicato, J.G. Speer, E. Spiridenkov, P. Spradlin, V. Sriskaran, F. Stagni,
M. Stahl, S. Stahl, S. Stanislaus, E.N. Stein, O. Steinkamp, O. Stenyakin, H.
Stevens, D. Strekalina, Y.S Su, F. Suljik, J. Sun, L. Sun, Y. Sun, P.N.
Swallow, K. Swientek, A. Szabelski, T. Szumlak, M. Szymanski, Y. Tan, S.
Taneja, M.D. Tat, A. Terentev, F. Teubert, E. Thomas, D.J.D. Thompson, H.
Tilquin, V. Tisserand, S. T'Jampens, M. Tobin, L. Tomassetti, G. Tonani, X.
Tong, D. Torres Machado, D.Y. Tou, C. Trippl, G. Tuci, N. Tuning, A. Ukleja,
D.J. Unverzagt, A. Usachov, A. Ustyuzhanin, U. Uwer, V. Vagnoni, A. Valassi,
G. Valenti, N. Valls Canudas, M. Van Dijk, H. Van Hecke, E. van Herwijnen,
C.B. Van Hulse, M. van Veghel, R. Vazquez Gomez, P. Vazquez Regueiro, C.
V\'azquez Sierra, S. Vecchi, J.J. Velthuis, M. Veltri, A. Venkateswaran, M.
Veronesi, M. Vesterinen, D. Vieira, M. Vieites Diaz, X. Vilasis-Cardona, E.
Vilella Figueras, A. Villa, P. Vincent, F.C. Volle, D. vom Bruch, V.
Vorobyev, N. Voropaev, K. Vos, C. Vrahas, J. Walsh, E.J. Walton, G. Wan, C.
Wang, G. Wang, J. Wang, J. Wang, J. Wang, J. Wang, M. Wang, R. Wang, X. Wang,
Y. Wang, Z. Wang, Z. Wang, Z. Wang, J.A. Ward, N.K. Watson, D. Websdale, Y.
Wei, B.D.C. Westhenry, D.J. White, M. Whitehead, A.R. Wiederhold, D. Wiedner,
G. Wilkinson, M.K. Wilkinson, I. Williams, M. Williams, M.R.J. Williams, R.
Williams, F.F. Wilson, W. Wislicki, M. Witek, L. Witola, C.P. Wong, G.
Wormser, S.A. Wotton, H. Wu, J. Wu, K. Wyllie, Z. Xiang, Y. Xie, A. Xu, J.
Xu, L. Xu, L. Xu, M. Xu, Q. Xu, Z. Xu, Z. Xu, D. Yang, S. Yang, X. Yang, Y.
Yang, Z. Yang, Z. Yang, L.E. Yeomans, V. Yeroshenko, H. Yeung, H. Yin, J. Yu,
X. Yuan, E. Zaffaroni, M. Zavertyaev, M. Zdybal, M. Zeng, C. Zhang, D. Zhang,
J. Zhang, L. Zhang, S. Zhang, S. Zhang, Y. Zhang, Y. Zhang, Y. Zhao, A.
Zharkova, A. Zhelezov, Y. Zheng, T. Zhou, X. Zhou, Y. Zhou, V. Zhovkovska, X.
Zhu, X. Zhu, Z. Zhu, V. Zhukov, Q. Zou, S. Zucchelli, D. Zuliani, G. Zunica
|
Study of charmonium decays to $K^0_S K \pi$ in the $B \to (K^0_S K \pi)
K$ channels
|
All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-051.html (LHCb
public pages)
| null | null |
LHCb-PAPER-2022-051, CERN-EP-2023-060
|
hep-ex
|
http://creativecommons.org/licenses/by/4.0/
|
A study of the $B^+\to K^0_SK^+K^-\pi^+$ and $B^+\to K^0_SK^+K^+\pi^-$ decays
is performed using proton-proton collisions at center-of-mass energies of 7, 8
and 13 TeV at the LHCb experiment. The $K^0_SK \pi$ invariant mass spectra from
both decay modes reveal a rich content of charmonium resonances. New precise
measurements of the $\eta_c$ and $\eta_c(2S)$ resonance parameters are
performed and branching fraction measurements are obtained for $B^+$ decays to
$\eta_c$, $J/\psi$, $\eta_c(2S)$ and $\chi_{c1}$ resonances. In particular, the
first observation and branching fraction measurement of $B^+ \to \chi_{c0} K^0
\pi^+$ is reported as well as first measurements of the $B^+\to K^0K^+K^-\pi^+$
and $B^+\to K^0K^+K^+\pi^-$ branching fractions. Dalitz plot analyses of
$\eta_c \to K^0_SK\pi$ and $\eta_c(2S) \to K^0_SK\pi$ decays are performed. A
new measurement of the amplitude and phase of the $K \pi$ $S$-wave as functions
of the $K \pi$ mass is performed, together with measurements of the
$K^*_0(1430)$, $K^*_0(1950)$ and $a_0(1700)$ parameters. Finally, the branching
fractions of $\chi_{c1}$ decays to $K^*$ resonances are also measured.
|
[{'version': 'v1', 'created': 'Fri, 28 Apr 2023 14:57:26 GMT'}]
|
2023-05-01
|
[array(['LHCb collaboration', '', ''], dtype=object)
array(['Aaij', 'R.', ''], dtype=object)
array(['Abdelmotteleb', 'A. S. W.', ''], dtype=object) ...
array(['Zucchelli', 'S.', ''], dtype=object)
array(['Zuliani', 'D.', ''], dtype=object)
array(['Zunica', 'G.', ''], dtype=object)]
|
5,474 |
1902.01859
|
Bingtian Ye
|
Bingtian Ye, Francisco Machado, Christopher David White, Roger S. K.
Mong, and Norman Y. Yao
|
Emergent hydrodynamics in non-equilibrium quantum systems
|
6+21 pages, 4+23 figures
|
Phys. Rev. Lett. 125, 030601 (2020)
|
10.1103/PhysRevLett.125.030601
| null |
cond-mat.str-el cond-mat.mes-hall cond-mat.stat-mech quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A tremendous amount of recent attention has focused on characterizing the
dynamical properties of periodically driven many-body systems. Here, we use a
novel numerical tool termed `density matrix truncation' (DMT) to investigate
the late-time dynamics of large-scale Floquet systems. We find that DMT
accurately captures two essential pieces of Floquet physics, namely,
prethermalization and late-time heating to infinite temperature. Moreover, by
implementing a spatially inhomogeneous drive, we demonstrate that an interplay
between Floquet heating and diffusive transport is crucial to understanding the
system's dynamics. Finally, we show that DMT also provides a powerful method
for quantitatively capturing the emergence of hydrodynamics in static
(un-driven) Hamiltonians; in particular, by simulating the dynamics of generic,
large-scale quantum spin chains (up to L = 100), we are able to directly
extract the energy diffusion coefficient.
|
[{'version': 'v1', 'created': 'Tue, 5 Feb 2019 19:00:00 GMT'}
{'version': 'v2', 'created': 'Tue, 30 Jul 2019 00:21:06 GMT'}
{'version': 'v3', 'created': 'Mon, 22 Feb 2021 18:47:51 GMT'}]
|
2021-02-23
|
[array(['Ye', 'Bingtian', ''], dtype=object)
array(['Machado', 'Francisco', ''], dtype=object)
array(['White', 'Christopher David', ''], dtype=object)
array(['Mong', 'Roger S. K.', ''], dtype=object)
array(['Yao', 'Norman Y.', ''], dtype=object)]
|
5,475 |
2212.09565
|
Sofie Martins
|
Sofie Martins, Agostino Patella
|
Finite-Size Effects of the HVP Contribution to the Muon $g-2$ with
C$^{\star}$ Boundary Conditions
|
7 pages, 1 figure, 2 tables, Talk at the 39th International Symposium
on Lattice Field Theory, 8th-13th of August 2022, Bonn, Germany
| null | null | null |
hep-lat
|
http://creativecommons.org/licenses/by/4.0/
|
The muon $g-2$ is a compelling quantity due to the current standing tensions
among the experimental average, data-driven theoretical results, and lattice
results. Matching the final target accuracy of the experiments at Fermilab and
J-PARC will constitute a major challenge for the lattice community in the
coming years. For this reason, it is worthwhile to consider different options
to keep the systematic errors under control. In this proceedings, we discuss
finite-volume effects of the leading Hadron Vacuum Polarization (HVP)
contribution to the muon $g-2$ in the presence of C$^{\star}$ boundary
conditions. When considering isospin-breaking corrections to the HVP,
C$^{\star}$ boundary conditions provide a possible consistent formulation of
$\mathrm{QCD+QED}$ in finite volume. Even though these boundary conditions can
be avoided in the calculation of the leading HVP contribution, we find the
interesting result that they remove the leading exponential finite-volume
correction. In practice, compared to the periodic case, C$^{\star}$ boundary
conditions cut the finite-size effects in half on a lattice of physical size
$M_{\pi}L=4$ and by a factor of almost ten for $M_{\pi}L=8$. We discuss the
origin of this reduction and implications for computational efficiency.
|
[{'version': 'v1', 'created': 'Mon, 19 Dec 2022 15:55:08 GMT'}
{'version': 'v2', 'created': 'Tue, 20 Dec 2022 13:44:35 GMT'}]
|
2022-12-21
|
[array(['Martins', 'Sofie', ''], dtype=object)
array(['Patella', 'Agostino', ''], dtype=object)]
|
5,476 |
1110.3477
|
Paola Squillacioti
|
Paola Squillacioti (for the CDF Collaboration and for the D0
Collaboration)
|
B and D physics from the Tevatron
| null | null | null | null |
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The CDF and D0 experiments at the Tevatron $p\bar{p}$ collider established
that extensive and detailed exploration of the b-quark dynamics is possible in
hadron collisions, with results competitive and supplementary to B-factories.
In this paper we review the current state of Tevatron's heavy flavor
measurements considering two main categories: searches for non standard model
physics (results on rare decays and CP-violation) and determinations of
standard model parameters (annihilation in $B \to h^+ h^-$ decays and $\gamma$
angle measurement through $B\to DK$ modes).
|
[{'version': 'v1', 'created': 'Sun, 16 Oct 2011 12:14:37 GMT'}
{'version': 'v2', 'created': 'Wed, 19 Oct 2011 21:11:51 GMT'}]
|
2019-08-14
|
[array(['Squillacioti', 'Paola', '',
'for the CDF Collaboration and for the D0\n Collaboration'],
dtype=object) ]
|
5,477 |
1004.4952
|
Marek Rogatko
|
Marek Gozdz, Lukasz Nakonieczny and Marek Rogatko
|
Dirac Fermions in Non-trivial Topology Black Hole Backgrounds
|
15 pages, RevTex, to be published in Phys.Rev.D15, some misprints
were corrected
|
Phys.Rev.D81:104027,2010
|
10.1103/PhysRevD.81.104027
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We discuss the behaviour of the Dirac fermions in a general spherically
symmetric black hole background with a non-trivial topology of the event
horizon. Both massive and massless cases are taken into account. The analytical
studies of intermediate and late-time behaviour of massive Dirac hair in the
background of a black hole with a global monopole and dilaton black hole
pierced by a cosmic string will be conducted. It was revealed that in the case
of a global monopole swallowed by a static black hole the intermediate
late-time behaviour depends on the mass of the Dirac field, the multiple number
of the wave mode and the global monopole parameter. The late-time behaviour is
quite independent of these factors and has the decay rate proportional to
$t^{-5/6}$. As far as the black hole pierced by a cosmic string is concerned
the intermediate late-time behaviour depends only on the hair mass and the
multipole number of the wave mode while the late-time behaviour dependence is
the same as in the previous case. The main modification stems from the topology
of the $S^2$ sphere pierced by a cosmic string. This factor modifies the
eigenvalues of the Dirac operator acting on the transverse manifold.
|
[{'version': 'v1', 'created': 'Wed, 28 Apr 2010 04:44:00 GMT'}
{'version': 'v2', 'created': 'Thu, 29 Apr 2010 07:57:14 GMT'}]
|
2015-03-17
|
[array(['Gozdz', 'Marek', ''], dtype=object)
array(['Nakonieczny', 'Lukasz', ''], dtype=object)
array(['Rogatko', 'Marek', ''], dtype=object)]
|
5,478 |
1308.2232
|
Brandon Bryant
|
Archana Anandakrishnan, B. Charles Bryant, Stuart Raby, Akin Wingerter
|
Gluino bounds: Simplified Models vs a Particular SO(10) Model (A
Snowmass white paper)
|
Snowmass 2013 white paper
| null | null | null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the results from the first run of LHC studied in the context of
simplified models and re-interpret them for a particular SO(10) model with a
non-simplified topology. Hadronic searches have been designed to obtain the
best sensitivity for the simplified models. They require multiple b-jets in the
final state. But we show that the bounds obtained from these searches are
weaker in the case of the particular model studied here, since there are fewer
b-jets.
|
[{'version': 'v1', 'created': 'Fri, 9 Aug 2013 20:03:12 GMT'}]
|
2013-08-13
|
[array(['Anandakrishnan', 'Archana', ''], dtype=object)
array(['Bryant', 'B. Charles', ''], dtype=object)
array(['Raby', 'Stuart', ''], dtype=object)
array(['Wingerter', 'Akin', ''], dtype=object)]
|
5,479 |
2006.10934
|
David Bogensberger
|
David Bogensberger (1), Gabriele Ponti (2, 1), Chichuan Jin (3),
Tomaso M. Belloni (2), Haiwu Pan (3), Kirpal Nandra (1), Thomas D. Russell
(4), James C. A. Miller-Jones (5), Teo Mu\~noz-Darias (6, 7), Pavan Vynatheya
(8), Federico Vincentelli (9) ((1) Max Planck Institut f\"ur
Extraterrestrische Physik, (2) INAF - Osservatorio Astronomico di Brera, (3)
National Astronomical Observatories, Chinese Academy of Sciences, (4) Anton
Pannekoek Institute of Astronomy, (5) International Centre for Radio
Astronomy Research - Curtin University, (6) Instituto de Astrof\'isica de
Canarias, (7) Departamento de Astrof\'isica, Universidad de La Laguna, (8)
IISER Kolkata, (9) Department of Physics and Astronomy, University of
Southampton)
|
An underlying clock in the extreme flip-flop state transitions of the
black hole transient Swift J1658.2-4242
|
30 pages, 28 figures, accepted for publication in Astronomy &
Astrophysics
|
A&A 641, A101 (2020)
|
10.1051/0004-6361/202037657
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Aims: Flip-flops are top-hat-like X-ray flux variations which occur in some
transient accreting black hole binary systems and feature simultaneous changes
in the spectral hardness and the Power Density Spectrum (PDS). They occur at a
crucial time in the evolution of these systems, when the accretion disk
emission starts to dominate over coronal emission. Flip-flops have only rarely
been observed and are poorly understood.
Methods: We detect 15 flip-flops in the 2018 outburst of Swift J1658.2-4242,
in observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL,
and ATCA. We analyse their light curves, search for periodicities, compute
their PDS, and fit their X-ray spectra, to investigate the source behaviour
during flip-flop transitions, and how the interval featuring flip-flops differs
from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety,
exhibiting flux differences of up to 77% within ~100s, much larger than has
been seen so far. We observe radical changes in the PDS simultaneous with the
sharp flux variations, featuring transitions between the Quasi-Periodic
Oscillation types C and A, which have never been observed before. Changes to
the PDS are delayed, but more rapid than changes in the light curve. Flip-flops
occur in two intervals, separated by two weeks in which these phenomena were
not seen. Transitions between the two flip-flop states occurred at random
integer multiples of a fundamental period, of 2.761ks in the first interval,
and 2.61ks in the second. Spectral analysis reveals the high and low flux
flip-flop states to be similar, but distinct from intervals lacking flip-flops.
A change in the inner temperature of the accretion disk is responsible for most
of the flux difference in the flip-flops. We highlight the importance of
correcting for the influence of the dust scattering halo on the X-ray spectra.
|
[{'version': 'v1', 'created': 'Fri, 19 Jun 2020 02:15:09 GMT'}]
|
2020-09-16
|
[array(['Bogensberger', 'David', ''], dtype=object)
array(['Ponti', 'Gabriele', ''], dtype=object)
array(['Jin', 'Chichuan', ''], dtype=object)
array(['Belloni', 'Tomaso M.', ''], dtype=object)
array(['Pan', 'Haiwu', ''], dtype=object)
array(['Nandra', 'Kirpal', ''], dtype=object)
array(['Russell', 'Thomas D.', ''], dtype=object)
array(['Miller-Jones', 'James C. A.', ''], dtype=object)
array(['Muñoz-Darias', 'Teo', ''], dtype=object)
array(['Vynatheya', 'Pavan', ''], dtype=object)
array(['Vincentelli', 'Federico', ''], dtype=object)]
|
5,480 |
1405.5042
|
Gert-Ludwig Ingold
|
Andreas Prinz-Zwick, Gert-Ludwig Ingold, Peter Talkner
|
Unitary dynamics and finite-time measurements: a case study
|
9 pages, 10 figures
|
Phys. Scr. T 165, 014014 (2015)
|
10.1088/0031-8949/2015/T165/014014
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The inhibition of the decay of a quantum system by frequent measurements is
known as quantum Zeno effect. Beyond the limit of projective measurements, the
interplay between the unitary dynamics of the system and the coupling to a
measurement apparatus becomes relevant. We explore this interplay by
considering a quantum particle moving on a one-dimensional chain. A local
measurement by coupling to an apparatus with a two-dimensional Hilbert space
detects the presence of the particle on a specific chain site. The decay of the
population is studied analytically for a two-site chain and numerically for a
larger system as a function of the measurement time and the time between
subsequent measurements. Particular attention is given to the shift of the
energy of the measured site due to the coupling to the apparatus. The decay of
the initial population can be hindered or accelerated, depending on the chosen
system and the coupling parameters.
|
[{'version': 'v1', 'created': 'Tue, 20 May 2014 11:41:51 GMT'}]
|
2015-10-09
|
[array(['Prinz-Zwick', 'Andreas', ''], dtype=object)
array(['Ingold', 'Gert-Ludwig', ''], dtype=object)
array(['Talkner', 'Peter', ''], dtype=object)]
|
5,481 |
2004.12997
|
Zhiguo Ding
|
Z. Ding and R. Schober and H. V. Poor
|
A New QoS-Guarantee Strategy for NOMA Assisted Semi-Grant-Free
Transmission
| null | null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Semi-grant-free (SGF) transmission has recently received significant
attention due to its capability to accommodate massive connectivity and reduce
access delay by admitting grant-free users to channels which would otherwise be
solely occupied by grant-based users. In this paper, a new SGF transmission
scheme that exploits the flexibility in choosing the decoding order in
non-orthogonal multiple access (NOMA) is proposed. Compared to existing SGF
schemes, this new scheme can ensure that admitting the grant-free users is
completely transparent to the grant-based users, i.e., the grant-based users'
quality-of-service experience is guaranteed to be the same as for orthogonal
multiple access. In addition, compared to existing SGF schemes, the proposed
SGF scheme can significantly improve the robustness of the grant-free users'
transmissions and effectively avoid outage probability error floors. To
facilitate the performance evaluation of the proposed SGF transmission scheme,
an exact expression for the outage probability is obtained and an asymptotic
analysis is conducted to show that the achievable multi-user diversity gain is
proportional to the number of participating grant-free users. Computer
simulation results demonstrate the performance of the proposed SGF transmission
scheme and verify the accuracy of the developed analytical results.
|
[{'version': 'v1', 'created': 'Mon, 27 Apr 2020 17:59:58 GMT'}]
|
2020-04-28
|
[array(['Ding', 'Z.', ''], dtype=object)
array(['Schober', 'R.', ''], dtype=object)
array(['Poor', 'H. V.', ''], dtype=object)]
|
5,482 |
1605.09445
|
Mark Huber
|
Mark Huber
|
An estimator for Poisson means whose relative error distribution is
known
|
10 pages, 1 table
| null | null | null |
stat.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Suppose that $X_1,X_2,\ldots$ are a stream of independent, identically
distributed Poisson random variables with mean $\mu$. This work presents a new
estimate $\mu_k$ for $\mu$ with the property that the distribution of the
relative error in the estimate ($(\hat \mu_k/\mu) - 1$) is known, and does not
depend on $\mu$ in any way. This enables the construction of simple exact
confidence intervals for the estimate, as well as a means of obtaining fast
approximation algorithms for high dimensional integration using TPA. The new
estimate requires a random number of Poisson draws, and so is best suited to
Monte Carlo applications. As an example of such an application, the method is
applied to obtain an exact confidence interval for the normalizing constant of
the Ising model.
|
[{'version': 'v1', 'created': 'Mon, 30 May 2016 23:11:18 GMT'}]
|
2016-06-01
|
[array(['Huber', 'Mark', ''], dtype=object)]
|
5,483 |
2007.10856
|
Qian Zhang
|
Qian Zhang and Zhimin Zhang
|
Three families of grad-div-conforming finite elements
|
28 pages; 6 figures. arXiv admin note: text overlap with
arXiv:2004.12507
| null | null | null |
math.NA cs.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Several smooth finite element de Rham complexes are constructed in
three-dimensional space, which yield three families of grad-div conforming
finite elements. The simplest element has only 8 degrees of freedom (DOFs) for
a tetrahedron and 14 DOFs for a cuboid. These elements naturally lead to
conforming approximations to quad-div problems. Numerical experiments for each
family validate the correctness and efficiency of the elements for solving the
quad-div problem.
|
[{'version': 'v1', 'created': 'Sun, 19 Jul 2020 03:48:03 GMT'}]
|
2020-07-22
|
[array(['Zhang', 'Qian', ''], dtype=object)
array(['Zhang', 'Zhimin', ''], dtype=object)]
|
5,484 |
1903.03944
|
Balasubramanian Sivan
|
Nikhil R. Devanur, Kamal Jain, Balasubramanian Sivan and Christopher
A. Wilkens
|
Near Optimal Online Algorithms and Fast Approximation Algorithms for
Resource Allocation Problems
|
Appeared in the Journal of the ACM, Volume 66, Issue 1, Pages
7:1--7:41, 2019
| null | null | null |
cs.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present prior robust algorithms for a large class of resource allocation
problems where requests arrive one-by-one (online), drawn independently from an
unknown distribution at every step. We design a single algorithm that, for
every possible underlying distribution, obtains a $1-\epsilon$ fraction of the
profit obtained by an algorithm that knows the entire request sequence ahead of
time. The factor $\epsilon$ approaches $0$ when no single request
consumes/contributes a significant fraction of the global
consumption/contribution by all requests together. We show that the tradeoff we
obtain here that determines how fast $\epsilon$ approaches $0$, is near
optimal: we give a nearly matching lower bound showing that the tradeoff cannot
be improved much beyond what we obtain.
Going beyond the model of a static underlying distribution, we introduce the
adversarial stochastic input model, where an adversary, possibly in an adaptive
manner, controls the distributions from which the requests are drawn at each
step. Placing no restriction on the adversary, we design an algorithm that
obtains a $1-\epsilon$ fraction of the optimal profit obtainable w.r.t. the
worst distribution in the adversarial sequence.
In the offline setting we give a fast algorithm to solve very large LPs with
both packing and covering constraints. We give algorithms to approximately
solve (within a factor of $1+\epsilon$) the mixed packing-covering problem with
$O(\frac{\gamma m \log (n/\delta)}{\epsilon^2})$ oracle calls where the
constraint matrix of this LP has dimension $n\times m$, the success probability
of the algorithm is $1-\delta$, and $\gamma$ quantifies how significant a
single request is when compared to the sum total of all requests.
We discuss implications of our results to several special cases including
online combinatorial auctions, network routing and the adwords problem.
|
[{'version': 'v1', 'created': 'Sun, 10 Mar 2019 07:45:34 GMT'}]
|
2019-03-12
|
[array(['Devanur', 'Nikhil R.', ''], dtype=object)
array(['Jain', 'Kamal', ''], dtype=object)
array(['Sivan', 'Balasubramanian', ''], dtype=object)
array(['Wilkens', 'Christopher A.', ''], dtype=object)]
|
5,485 |
nucl-ex/0608052
|
Oleg Grachov A
|
O. A. Grachov, M. J. Murray (1), A. S. Ayan, P. Debbins, E. Norbeck,
Y. Onel (2), D. d'Enterria (3) ((1) University of Kansas, (2) University of
Iowa, (3) CERN PH/EP)
|
Status of Zero Degree Calorimeter for CMS Experiment
|
8 pages, 5 figures, 1 table, to appear in the proceedings of CALOR06,
June 5-9, 2006 Chicago, USA
|
AIPConf.Proc.867:258-265,2006
|
10.1063/1.2396962
|
CMS CR - 2006/041
|
nucl-ex hep-ex physics.ins-det
| null |
The Zero Degree Calorimeter (ZDC) is integral part of the CMS experiment,
especially, for heavy ion studies. The design of the ZDC includes two
independent calorimeter sections: an electromagnetic section and a hadronic
section. Sampling calorimeters using tungsten and quartz fibers have been
chosen for the energy measurements. An overview of the ZDC is presented along
with a current status of calorimeter's preparation for Day 1 of LHC.
|
[{'version': 'v1', 'created': 'Wed, 30 Aug 2006 01:01:33 GMT'}
{'version': 'v2', 'created': 'Mon, 4 Sep 2006 03:23:05 GMT'}]
|
2009-11-11
|
[array(['Grachov', 'O. A.', ''], dtype=object)
array(['Murray', 'M. J.', ''], dtype=object)
array(['Ayan', 'A. S.', ''], dtype=object)
array(['Debbins', 'P.', ''], dtype=object)
array(['Norbeck', 'E.', ''], dtype=object)
array(['Onel', 'Y.', ''], dtype=object)
array(["d'Enterria", 'D.', ''], dtype=object)]
|
5,486 |
1506.00526
|
K. A. Postnov
|
N. Shakura, K. Postnov (Sternberg Astronomical Institute, Moscow,
Russia)
|
A viscous-convective instability in laminar Keplerian thin discs. II.
Anelastic approximation
|
10 pages, 5 figures, accepted for publication in MNRAS, Main Journal
|
Monthly Notices of the Royal Astronomical Society 2015 451 (4):
3995-4004
|
10.1093/mnras/stv1246
| null |
astro-ph.HE physics.flu-dyn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using the anelastic approximation of linearised hydrodynamic equations, we
investigate the development of axially symmetric small perturbations in thin
Keplerian discs. The sixth-order dispersion equation is derived and numerically
solved for different values of relevant physical parameters (viscosity, heat
conductivity, disc semi-thickness and vertical structure). The analysis reveals
the appearance of two overstable modes which split out from the classical
Rayleigh inertial modes in a wide range of the parameters in both ionized and
neutral gases. These modes have a viscous-convective nature and can serve as a
seed for turbulence in astrophysical discs even in the absence of magnetic
fields.
|
[{'version': 'v1', 'created': 'Mon, 1 Jun 2015 15:17:03 GMT'}]
|
2015-07-02
|
[array(['Shakura', 'N.', '',
'Sternberg Astronomical Institute, Moscow,\n Russia'],
dtype=object)
array(['Postnov', 'K.', '',
'Sternberg Astronomical Institute, Moscow,\n Russia'],
dtype=object) ]
|
5,487 |
1210.0829
|
Harbi AlMahafzah
|
Harbi AlMahafzah and Maen Zaid AlRwashdeh
|
A Survey of Multibiometric Systems
| null |
International Journal of Computer Application volume 43 No 15
April 2012
|
10.5120/6182-8612
| null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Most biometric systems deployed in real-world applications are unimodal.
Using unimodal biometric systems have to contend with a variety of problems
such as: Noise in sensed data; Intra-class variations; Inter-class
similarities; Non-universality; Spoof attacks. These problems have addressed by
using multibiometric systems, which expected to be more reliable due to the
presence of multiple, independent pieces of evidence.
|
[{'version': 'v1', 'created': 'Tue, 2 Oct 2012 16:26:39 GMT'}]
|
2015-06-11
|
[array(['AlMahafzah', 'Harbi', ''], dtype=object)
array(['AlRwashdeh', 'Maen Zaid', ''], dtype=object)]
|
5,488 |
0708.1696
|
Yusuke Wakabayashi
|
Toru Kakiuchi, Yusuke Wakabayashi, Hiroshi Sawa, Toshihiro Takahashi,
and Toshikazu Nakamura
|
Charge Ordering in alpha-(BEDT-TTF)2I3 by synchrotron x-ray diffraction
|
8 pages, 5 figures, 1 table
| null |
10.1143/JPSJ.76.113702
| null |
cond-mat.str-el
| null |
The spatial charge arrangement of a typical quasi-two-dimensional organic
conductor alpha-(BEDT-TTF)2I3 is revealed by single crystal structure analysis
using synchrotron radiation. The results show that the horizontal stripe type
structure, which was suggested by mean field theory, is established. We also
find the charge disproportion above the metal-insulator transition temperature
and a significant change in transfer integrals caused by the phase transition.
Our result elucidates the insulating phase of this material as a 2k_F charge
density localization.
|
[{'version': 'v1', 'created': 'Mon, 13 Aug 2007 11:20:00 GMT'}]
|
2009-11-13
|
[array(['Kakiuchi', 'Toru', ''], dtype=object)
array(['Wakabayashi', 'Yusuke', ''], dtype=object)
array(['Sawa', 'Hiroshi', ''], dtype=object)
array(['Takahashi', 'Toshihiro', ''], dtype=object)
array(['Nakamura', 'Toshikazu', ''], dtype=object)]
|
5,489 |
physics/0308070
|
Martin Gmitra
|
Denis Horvath and Martin Gmitra
|
The self-organized multi-lattice Monte Carlo simulation
|
8 figures. submitted to Phys. Rev. E (11 Aug 2003)
| null |
10.1142/S0129183104006674
| null |
physics.comp-ph physics.data-an
| null |
The self-organized Monte Carlo simulations of 2D Ising ferromagnet on the
square lattice are performed. The essence of devised simulation method is the
artificial dynamics consisting of the single-spin-flip algorithm of Metropolis
supplemented by the random walk in the temperature space. The walk is biased to
the critical region through the feedback equation utilizing the memory-based
filtering recursion instantly estimating the energy cumulants. The simulations
establish that the peak of the temperature probability density function is
located nearly the pseudocritical temperature pertaining to canonical
equilibrium. In order to eliminate the finite-size effects, the self-organized
approach is extended to multi-lattice systems, where feedback is constructed
from the pairs of the instantaneous running fourth-order cumulants of the
magnetization. The replica-based simulations indicate that several properly
chosen steady statistical distributions of the self-organized Monte Carlo
systems resemble characteristics of the standard self-organized critical
systems.
|
[{'version': 'v1', 'created': 'Mon, 18 Aug 2003 06:14:31 GMT'}
{'version': 'v2', 'created': 'Wed, 28 Jan 2004 14:22:54 GMT'}]
|
2009-11-10
|
[array(['Horvath', 'Denis', ''], dtype=object)
array(['Gmitra', 'Martin', ''], dtype=object)]
|
5,490 |
1510.07366
|
Taqseer Khan
|
M. Mursaleen and Taqseer Khan
|
On statistical approximation properties of on statistical approximation
properties of (p,q)-bleimann-butzer-hahn operators
|
18 pages. arXiv admin note: substantial text overlap with
arXiv:1505.00392
| null | null | null |
math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The aim of this paper is to introduce a generalization of the
(p,q)-Bleimann-Butzer-Hahn operators based on (p,q)-integers and obtain
Korovkin's type statistical approximation theorem for these operators. Also, we
establish the rate of convergence of these operators using the modulus of
continuity. Furthermore, we introduce (p,q)-Bleimann-Butzer-Hahn bivariate
operators.
|
[{'version': 'v1', 'created': 'Mon, 26 Oct 2015 05:37:13 GMT'}]
|
2015-11-27
|
[array(['Mursaleen', 'M.', ''], dtype=object)
array(['Khan', 'Taqseer', ''], dtype=object)]
|
5,491 |
2204.07109
|
Piotr Czarnik
|
Piotr Czarnik, Michael McKerns, Andrew T. Sornborger, Lukasz Cincio
|
Improving the efficiency of learning-based error mitigation
|
13 pages, 7 figures
| null | null |
LA-UR-22-23390
|
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Error mitigation will play an important role in practical applications of
near-term noisy quantum computers. Current error mitigation methods typically
concentrate on correction quality at the expense of frugality (as measured by
the number of additional calls to quantum hardware). To fill the need for
highly accurate, yet inexpensive techniques, we introduce an error mitigation
scheme that builds on Clifford data regression (CDR). The scheme improves the
frugality by carefully choosing the training data and exploiting the symmetries
of the problem. We test our approach by correcting long range correlators of
the ground state of XY Hamiltonian on IBM Toronto quantum computer. We find
that our method is an order of magnitude cheaper while maintaining the same
accuracy as the original CDR approach. The efficiency gain enables us to obtain
a factor of $10$ improvement on the unmitigated results with the total budget
as small as $2\cdot10^5$ shots.
|
[{'version': 'v1', 'created': 'Thu, 14 Apr 2022 16:58:51 GMT'}]
|
2022-04-15
|
[array(['Czarnik', 'Piotr', ''], dtype=object)
array(['McKerns', 'Michael', ''], dtype=object)
array(['Sornborger', 'Andrew T.', ''], dtype=object)
array(['Cincio', 'Lukasz', ''], dtype=object)]
|
5,492 |
1711.05553
|
Mohamed Ismail Abdelrahman
|
M. Ismail Abdelrahman and B. Gralak
|
Modal analysis of wave propagation in dispersive media
|
10 pages, 9 figures
|
Phys. Rev. A 97, 013824 (2018)
|
10.1103/PhysRevA.97.013824
| null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Surveys on wave propagation in dispersive media have been limited since the
pioneering work of Sommerfeld [Ann. Phys. 349, 177 (1914)] by the presence of
branches in the integral expression of the wave function. In this article, a
method is proposed to eliminate these critical branches and hence to establish
a modal expansion of the time-dependent wave function. The different components
of the transient waves are physically interpreted as the contributions of
distinct sets of modes and characterized accordingly. Then, the modal expansion
is used to derive a modified analytical expression of the Sommerfeld precursor
improving significantly the description of the amplitude and the oscillating
period up to the arrival of the Brillouin precursor. The proposed method and
results apply to all waves governed by the Helmholtz equations.
|
[{'version': 'v1', 'created': 'Wed, 15 Nov 2017 13:10:49 GMT'}
{'version': 'v2', 'created': 'Fri, 22 Dec 2017 18:13:57 GMT'}]
|
2018-01-24
|
[array(['Abdelrahman', 'M. Ismail', ''], dtype=object)
array(['Gralak', 'B.', ''], dtype=object)]
|
5,493 |
1804.09738
|
Hang Liu
|
Hang Liu, Yufei Ding, Da Zheng, Seung Woo Son, Da Yan
|
Challenges Towards Deploying Data Intensive Scientific Applications on
Extreme Heterogeneity Supercomputers
| null | null | null | null |
cs.DC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Shrinking transistors, which powered the advancement of computing in the past
half century, has stalled due to power wall; now extreme heterogeneity is
promised to be the next driving force to feed the needs of ever-increasingly
diverse scientific domains. To unlock the potentials of such supercomputers, we
identify eight potential challenges in three categories: First, one needs fast
data movement since extreme heterogeneity will inevitably complicate the
communication circuits -- thus hampering the data movement. Second, we need to
intelligently schedule suitable hardware for corresponding applications/stages.
Third, we have to lower the programming complexity in order to encourage the
adoption of heterogeneous computing.
|
[{'version': 'v1', 'created': 'Wed, 25 Apr 2018 18:16:59 GMT'}]
|
2018-04-27
|
[array(['Liu', 'Hang', ''], dtype=object)
array(['Ding', 'Yufei', ''], dtype=object)
array(['Zheng', 'Da', ''], dtype=object)
array(['Son', 'Seung Woo', ''], dtype=object)
array(['Yan', 'Da', ''], dtype=object)]
|
5,494 |
q-alg/9507004
| null |
F.Bonechi, R.Giachetti, R.Maciocco, E.Sorace and M.Tarlini (Dep. of
Phys., Univ. of Florence and I.N.F.N., Florence, Italy)
|
Quantum Double and Differential Calculi
|
Revised version with added cohomological analysis. 14 pages, plain
tex
| null |
10.1007/BF00312672
| null |
q-alg math.QA
| null |
We show that bicovariant bimodules as defined by Woronowicz are in one to one
correspondence with the Drinfeld quantum double representations. We then prove
that a differential calculus associated to a bicovariant bimodule of dimension
n is connected to the existence of a particular (n+1)--dimensional
representation of the double. An example of bicovariant differential calculus
on the non quasitriangular quantum group E_q(2) is developed. The construction
is studied in terms of Hochschild cohomology and a correspondence between
differential calculi and 1-cocycles is proved. Some differences of calculi on
quantum and finite groups with respect to Lie groups are stressed.
|
[{'version': 'v1', 'created': 'Fri, 7 Jul 1995 10:02:44 GMT'}
{'version': 'v2', 'created': 'Sat, 18 Nov 1995 12:35:05 GMT'}]
|
2009-10-28
|
[array(['Bonechi', 'F.', '',
'Dep. of\n Phys., Univ. of Florence and I.N.F.N., Florence, Italy'],
dtype=object)
array(['Giachetti', 'R.', '',
'Dep. of\n Phys., Univ. of Florence and I.N.F.N., Florence, Italy'],
dtype=object)
array(['Maciocco', 'R.', '',
'Dep. of\n Phys., Univ. of Florence and I.N.F.N., Florence, Italy'],
dtype=object)
array(['Sorace', 'E.', '',
'Dep. of\n Phys., Univ. of Florence and I.N.F.N., Florence, Italy'],
dtype=object)
array(['Tarlini', 'M.', '',
'Dep. of\n Phys., Univ. of Florence and I.N.F.N., Florence, Italy'],
dtype=object) ]
|
5,495 |
1303.6337
|
Andrea Sanna
|
Andrea Sanna (1), Beike Hiemstra (1), Mariano Mendez (1), Diego
Altamirano (2), Tomaso Belloni (3), Manuel Linares (4) ((1) Groningen, (2)
Amsterdam, (3) INAF-OAB, (4) Canary Islands)
|
Broad iron line in the fast spinning neutron-star system 4U 1636-53
|
20 pages, 8 figures, Accepted for publication in MNRAS
| null |
10.1093/mnras/stt530
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We analysed the X-ray spectra of six observations, simultaneously taken with
XMM-Newton and Rossi X-ray Timing Explorer (RXTE), of the neutron star low-mass
X-ray binary 4U 1636-53. The observations cover several states of the source,
and therefore a large range of inferred mass accretion rate. These six
observations show a broad emission line in the spectrum at around 6.5 keV,
likely due to iron. We fitted this line with a set of phenomenological models
of a relativistically broadened line, plus a model that accounts for
relativistically smeared and ionised reflection from the accretion disc. The
latter model includes the incident emission from both the neutron-star surface
or boundary layer and the corona that is responsible for the high-energy
emission in these systems. From the fits with the reflection model we found
that in four out of the six observations the main contribution to the reflected
spectrum comes from the neutron-star surface or boundary layer, whereas in the
other two observations the main contribution to the reflected spectrum comes
from the corona. We found that the relative contribution of these two
components is not correlated to the state of the source. From the
phenomenological models we found that the iron line profile is better described
by a symmetric, albeit broad, profile. The width of the line cannot be
explained only by Compton broadening, and we therefore explored the case of
relativistic broadening. We further found that the direct emission from the
disc, boundary layer, and corona generally evolved in a manner consistent with
the standard accretion disc model, with the disc and boundary layer becoming
hotter and the disc moving inwards as the source changed from the hard in to
the soft state. The iron line, however, did not appear to follow the same
trend.
|
[{'version': 'v1', 'created': 'Mon, 25 Mar 2013 22:28:38 GMT'}]
|
2015-06-15
|
[array(['Sanna', 'Andrea', ''], dtype=object)
array(['Hiemstra', 'Beike', ''], dtype=object)
array(['Mendez', 'Mariano', ''], dtype=object)
array(['Altamirano', 'Diego', ''], dtype=object)
array(['Belloni', 'Tomaso', ''], dtype=object)
array(['Linares', 'Manuel', ''], dtype=object)]
|
5,496 |
1101.1232
|
Debajyoti Mukhopadhyay Prof.
|
Rishin Haldar and Debajyoti Mukhopadhyay
|
Levenshtein Distance Technique in Dictionary Lookup Methods: An Improved
Approach
|
5 pages, 1 figure
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Dictionary lookup methods are popular in dealing with ambiguous letters which
were not recognized by Optical Character Readers. However, a robust dictionary
lookup method can be complex as apriori probability calculation or a large
dictionary size increases the overhead and the cost of searching. In this
context, Levenshtein distance is a simple metric which can be an effective
string approximation tool. After observing the effectiveness of this method, an
improvement has been made to this method by grouping some similar looking
alphabets and reducing the weighted difference among members of the same group.
The results showed marked improvement over the traditional Levenshtein distance
technique.
|
[{'version': 'v1', 'created': 'Thu, 6 Jan 2011 15:07:37 GMT'}]
|
2011-01-07
|
[array(['Haldar', 'Rishin', ''], dtype=object)
array(['Mukhopadhyay', 'Debajyoti', ''], dtype=object)]
|
5,497 |
2206.10621
|
Madhusudhan Nikku
|
M{\aa}ns Holmberg and Nikku Madhusudhan
|
A First Look at CRIRES+: Performance Assessment and Exoplanet
Spectroscopy
|
Accepted version updated with proof edits
| null |
10.3847/1538-3881/ac77eb
| null |
astro-ph.EP astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
High-resolution spectroscopy has proven to be a powerful avenue for
atmospheric remote sensing of exoplanets. Recently, ESO commissioned the
CRIRES+ high-resolution infrared spectrograph at VLT. CRIRES+ is a
cross-dispersed spectrograph with high throughput and wide wavelength coverage
across the near-infrared (0.95-5.3 $\mu$m), designed to be particularly suited
for atmospheric characterisation of exoplanets. In this work, we report early
insights into the performance of CRIRES+ for exoplanet spectroscopy and conduct
a detailed assessment of the data reduction procedure. Because of the novelty
of the instrument, we perform two independent data reduction strategies, using
the official CR2RES pipeline and our new custom-built ExoRES pipeline. Using
science verification observations we find that the spectral resolving power of
CRIRES+ can reach $R \gtrsim 100,000$ for optimal observing conditions.
Similarly, we find the signal-to-noise ratio (S/N) to be consistent with
expected and empirical estimates for the observations considered. As a case
study, we perform the first application of CRIRES+ to the atmospheric
characterisation of an exoplanet - the ultra-hot Jupiter MASCARA-1 b. We detect
CO and H$_2$O in the atmosphere of MASCARA-1 b at a S/N of 12.9 and 5.3,
respectively, and a temperature inversion revealed through the CO and H$_2$O
emission lines, the first for an exoplanet. We find a combined S/N of 13.8 for
CO and H$_2$O together, with a preference for lower H$_2$O abundance compared
to CO. Our findings demonstrate the scientific potential of CRIRES+ and
highlight the excellent opportunity for high-resolution atmospheric
spectroscopy of diverse exoplanets.
|
[{'version': 'v1', 'created': 'Tue, 21 Jun 2022 18:00:00 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Aug 2022 17:08:45 GMT'}]
|
2022-08-26
|
[array(['Holmberg', 'Måns', ''], dtype=object)
array(['Madhusudhan', 'Nikku', ''], dtype=object)]
|
5,498 |
hep-th/0410142
|
Erick J. Weinberg
|
James C. Hackworth, Erick J. Weinberg
|
Oscillating bounce solutions and vacuum tunneling in de Sitter spacetime
|
31 pages, 11 figures
|
Phys.Rev. D71 (2005) 044014
|
10.1103/PhysRevD.71.044014
|
CU-TP-1118
|
hep-th
| null |
We study a class of oscillating bounce solutions to the Euclidean field
equations for gravity coupled to a scalar field theory with two, possibly
degenerate, vacua. In these solutions the scalar field crosses the top of the
potential barrier $k>1$ times. Using analytic and numerical methods, we examine
how the maximum allowed value of $k$ depends on the parameters of the theory.
For a wide class of potentials $k_{\rm max}$ is determined by the value of the
second derivative of the scalar field potential at the top of the barrier.
However, in other cases, such as potentials with relatively flat barriers, the
determining parameter appears instead to be the value of this second derivative
averaged over the width of the barrier. As a byproduct, we gain additional
insight into the conditions under which a Coleman-De Luccia bounce exists. We
discuss the physical interpretation of these solutions and their implications
for vacuum tunneling transitions in de Sitter spacetime.
|
[{'version': 'v1', 'created': 'Tue, 12 Oct 2004 21:11:19 GMT'}]
|
2009-11-10
|
[array(['Hackworth', 'James C.', ''], dtype=object)
array(['Weinberg', 'Erick J.', ''], dtype=object)]
|
5,499 |
cond-mat/0602427
|
Tetsuo Deguchi
|
Tetsuo Deguchi
|
On the Degenerate Multiplicity of the $sl_2$ Loop Algebra for the 6V
Transfer Matrix at Roots of Unity
|
Published in SIGMA (Symmetry, Integrability and Geometry: Methods and
Applications) at http://www.emis.de/journals/SIGMA/
|
SIGMA 2 (2006), 021, 10 pages
|
10.3842/SIGMA.2006.021
| null |
cond-mat.stat-mech math-ph math.MP nlin.SI
| null |
We review the main result of cond-mat/0503564. The Hamiltonian of the XXZ
spin chain and the transfer matrix of the six-vertex model has the $sl_2$ loop
algebra symmetry if the $q$ parameter is given by a root of unity,
$q_0^{2N}=1$, for an integer $N$. We discuss the dimensions of the degenerate
eigenspace generated by a regular Bethe state in some sectors, rigorously as
follows: We show that every regular Bethe ansatz eigenvector in the sectors is
a highest weight vector and derive the highest weight ${\bar d}_k^{\pm}$, which
leads to evaluation parameters $a_j$. If the evaluation parameters are
distinct, we obtain the dimensions of the highest weight representation
generated by the regular Bethe state.
|
[{'version': 'v1', 'created': 'Fri, 17 Feb 2006 20:29:41 GMT'}]
|
2008-04-24
|
[array(['Deguchi', 'Tetsuo', ''], dtype=object)]
|
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