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|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5,000 |
1911.08286
|
Sarah McDaid PhD
|
Edward McDaid, Sarah McDaid
|
Zoea -- Composable Inductive Programming Without Limits
|
13 pages, 4 figures
| null | null | null |
cs.PL cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Automatic generation of software from some form of specification has been a
long standing goal of computer science research. To date successful results
have been reported for the production of relatively small programs. This paper
presents Zoea which is a simple programming language that allows software to be
generated from a specification format that closely resembles a set of automated
functional tests. Zoea incorporates a number of advances that enable it to
generate software that is large enough to have commercial value. Zoea also
allows programs to be composed to form still larger programs. As a result Zoea
can be used to produce software of any size and complexity. An overview of the
core Zoea language is provided together with a high level description of the
symbolic AI based Zoea compiler.
|
[{'version': 'v1', 'created': 'Wed, 13 Nov 2019 12:28:17 GMT'}]
|
2019-11-20
|
[array(['McDaid', 'Edward', ''], dtype=object)
array(['McDaid', 'Sarah', ''], dtype=object)]
|
5,001 |
2109.01101
|
Ulisse Munari
|
U. Munari, P. Valisa
|
The 2021 outburst of RS Oph. A pictorial atlas of the spectroscopic
evolution: the first 18 days
|
12 pages, 7 figures, 3 tables
| null | null | null |
astro-ph.SR astro-ph.HE
|
http://creativecommons.org/licenses/by/4.0/
|
A pictorial atlas of the spectroscopic evolution at optical wavelengths is
presented for the first 18 days of the 2021 outburst of the recurrent nova RS
Oph, prior to the emergence of high ionization emission lines. The spectra
presented here have been obtained at daily cadence with the Asiago 1.22m + B&C
(3200-7900 Ang, 2.3 \AA/pix) and Varese 0.84m + Echelle telescopes (4250-8900
\AA, resolving power 18,000). The spectra have been fully calibrated in IRAF,
absolutely fluxed, and heliocentric corrected. The Echelle spectra have been
also corrected for telluric absorptions.
|
[{'version': 'v1', 'created': 'Thu, 2 Sep 2021 17:23:34 GMT'}]
|
2021-09-03
|
[array(['Munari', 'U.', ''], dtype=object)
array(['Valisa', 'P.', ''], dtype=object)]
|
5,002 |
1603.01046
|
Teemu Helenius
|
Teemu Helenius and Samuli Siltanen
|
Photographic dataset: random peppercorns
| null | null | null | null |
physics.data-an cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This is a photographic dataset collected for testing image processing
algorithms. The idea is to have sets of different but statistically similar
images. In this work the images show randomly distributed peppercorns. The
dataset is made available at www.fips.fi/photographic_dataset.php .
|
[{'version': 'v1', 'created': 'Thu, 3 Mar 2016 10:24:07 GMT'}]
|
2016-03-04
|
[array(['Helenius', 'Teemu', ''], dtype=object)
array(['Siltanen', 'Samuli', ''], dtype=object)]
|
5,003 |
2212.08884
|
Pierre Degond
|
Pierre Degond, Mario Pulvirenti, Stefano Rossi
|
Propagation of chaos for topological interactions by a coupling
technique
| null | null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a system of particles which interact through a jump process. The
jump intensities are functions of the proximity rank of the particles, a type
of interaction referred to as topological in the literature. Such interactions
have been shown relevant for the modelling of bird flocks. We show that, in the
large number of particles limit and under minimal smoothness assumptions on the
data, the model converges to a kinetic equation which was derived in earlier
works both formally and rigorously under more stringent regularity assumptions.
The proof relies on the coupling method which assigns to the particle and
limiting processes a joint process posed on the cartesian product of the two
configuration spaces of the former processes. By appropriate estimates in a
suitable Wasserstein metric, we show that the distance between the two
processes tends to zero as the number of particles tends to infinity, with an
error typical of the law of large numbers.
|
[{'version': 'v1', 'created': 'Sat, 17 Dec 2022 14:50:47 GMT'}]
|
2022-12-20
|
[array(['Degond', 'Pierre', ''], dtype=object)
array(['Pulvirenti', 'Mario', ''], dtype=object)
array(['Rossi', 'Stefano', ''], dtype=object)]
|
5,004 |
2008.05965
|
Michael Parker
|
M. L. Parker, G. A. Matzeu, W. N. Alston, A C. Fabian, A. Lobban, G.
Miniutti, C. Pinto, M. Santos-Lle\'o, and N. Schartel
|
Detection of a possible multiphase ultra-fast outflow in IRAS 13349+2438
with NuSTAR and XMM-Newton
|
5 pages, 2 figures, accepted for publication in MNRAS letters
| null |
10.1093/mnrasl/slaa144
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present joint NuSTAR and XMM-Newton observations of the bright, variable
quasar IRAS 13349+2438. This combined dataset shows two clear iron absorption
lines at 8 and 9 keV, which are most likely associated with two layers of
mildly relativistic blueshifted absorption, with velocities of 0.14c and 0.27c.
We also find strong evidence for a series of Ly$\alpha$ absorption lines at
intermediate energies in a stacked XMM-Newton EPIC-pn spectrum, at the same
blueshift as the lower velocity iron feature. This is consistent with a
scenario where an outflowing wind is radially stratified, so faster, higher
ionization material is observed closer to the black hole, and cooler, slower
material is seen from streamlines at larger radii.
|
[{'version': 'v1', 'created': 'Thu, 13 Aug 2020 15:21:34 GMT'}]
|
2020-09-02
|
[array(['Parker', 'M. L.', ''], dtype=object)
array(['Matzeu', 'G. A.', ''], dtype=object)
array(['Alston', 'W. N.', ''], dtype=object)
array(['Fabian', 'A C.', ''], dtype=object)
array(['Lobban', 'A.', ''], dtype=object)
array(['Miniutti', 'G.', ''], dtype=object)
array(['Pinto', 'C.', ''], dtype=object)
array(['Santos-Lleó', 'M.', ''], dtype=object)
array(['Schartel', 'N.', ''], dtype=object)]
|
5,005 |
2304.14734
|
Yuri Hasegawa
|
Yuri Hasegawa, Takuma Yamaguchi, Matthias Meissner, Takahiro Ueba,
Fabio Bossolotti, Shin-ichiro Ideta, Kiyohisa Tanaka, Susumu Yanagisawa,
Satoshi Kera
|
Proving weak electronic interaction between molecules and substrate: a
study of pentacene monolayer on graphite
| null | null | null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The impact of van der Waals interaction on the electronic structure between a
pentacene monolayer and a graphite surface was investigated. Upon cooling the
monolayer, newly formed dispersive bands, showing the constant final state
nature overlapping with the non-dispersive, discrete molecular orbital state,
is observed by low-energy angle-resolved photoelectron spectroscopy. The
dispersive band consists of positive and negative intensities depending on the
final state energy, indicating Fano resonance involving a discrete molecular
state that couples a continuum state upon photoionization. A wave-function
overlap is demonstrated according to their larger spread in unoccupied states
even at the weakly bounded interface by Fano spectral analysis.
|
[{'version': 'v1', 'created': 'Fri, 28 Apr 2023 10:26:45 GMT'}
{'version': 'v2', 'created': 'Wed, 17 May 2023 12:25:42 GMT'}]
|
2023-05-18
|
[array(['Hasegawa', 'Yuri', ''], dtype=object)
array(['Yamaguchi', 'Takuma', ''], dtype=object)
array(['Meissner', 'Matthias', ''], dtype=object)
array(['Ueba', 'Takahiro', ''], dtype=object)
array(['Bossolotti', 'Fabio', ''], dtype=object)
array(['Ideta', 'Shin-ichiro', ''], dtype=object)
array(['Tanaka', 'Kiyohisa', ''], dtype=object)
array(['Yanagisawa', 'Susumu', ''], dtype=object)
array(['Kera', 'Satoshi', ''], dtype=object)]
|
5,006 |
1103.5126
|
Gestur Olafsson
|
Gestur Olafsson and Angela Pasquale
|
Ramanujan's Master Theorem for Riemannian symmetric spaces
|
As accepted by JFA
| null | null | null |
math.RT math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Ramanujan's Master theorem states that, under suitable conditions, the Mellin
transform of a power series provides an interpolation formula for the
coefficients of this series. Based on the duality of Riemannian symmetric
spaces of compact and noncompact type inside a common complexification, we
prove an analogue of Ramanujan's Master Theorem for the spherical Fourier
transform of a spherical Fourier series. This extend the results proven by
Bertram for Riemannian symmetric spaces of rank-one.
|
[{'version': 'v1', 'created': 'Sat, 26 Mar 2011 12:02:07 GMT'}
{'version': 'v2', 'created': 'Wed, 7 Dec 2011 10:53:43 GMT'}
{'version': 'v3', 'created': 'Mon, 12 Mar 2012 23:17:55 GMT'}]
|
2012-03-14
|
[array(['Olafsson', 'Gestur', ''], dtype=object)
array(['Pasquale', 'Angela', ''], dtype=object)]
|
5,007 |
2110.00124
|
Federico Ruggeri
|
Federico Ruggeri, Marco Lippi, Paolo Torroni
|
Tree-Constrained Graph Neural Networks For Argument Mining
| null | null | null | null |
cs.CL cs.AI cs.LG
|
http://creativecommons.org/licenses/by-sa/4.0/
|
We propose a novel architecture for Graph Neural Networks that is inspired by
the idea behind Tree Kernels of measuring similarity between trees by taking
into account their common substructures, named fragments. By imposing a series
of regularization constraints to the learning problem, we exploit a pooling
mechanism that incorporates such notion of fragments within the node soft
assignment function that produces the embeddings. We present an extensive
experimental evaluation on a collection of sentence classification tasks
conducted on several argument mining corpora, showing that the proposed
approach performs well with respect to state-of-the-art techniques.
|
[{'version': 'v1', 'created': 'Thu, 2 Sep 2021 08:56:25 GMT'}]
|
2021-10-04
|
[array(['Ruggeri', 'Federico', ''], dtype=object)
array(['Lippi', 'Marco', ''], dtype=object)
array(['Torroni', 'Paolo', ''], dtype=object)]
|
5,008 |
1609.04110
|
Guoli Zhou
|
Guoli Zhou and Yanfeng Guo
|
The global attractor for the 3-D viscous primitive equations of
large-scale moist atmosphere
| null | null | null | null |
math.AP
|
http://creativecommons.org/licenses/by/4.0/
|
Absorbing ball in $H^{1}(\mho)$ is obtained for the strong solution to the
three dimensional viscous moist primitive equations under the natural
assumption $Q_{1},Q_{2}\in L^{2}(\mho)$ which is weaker than the assumption
$Q_{1},Q_{2}\in H^{1}(\mho)$ in $\cite{GH2}$. In view of the structure of the
manifold and the special geometry involved with vertical velocity, the
continuity of the strong solution in $H^{1}(\mho)$ is established with respect
to time and initial data. To obtain the existence of the global attractor for
the moist primitive equations, the common method is to obtain the absorbing
ball in $H^{2}(\mho)$ for the strong solution to the equations. But it is
difficult due to the complex structure of the moist primitive equations. To
overcome the difficulty, we try to use Aubin-Lions lemma and the continuous
property of the strong solutions to the moist primitive equations to prove the
the existence of the global attractor which improves the result, the existence
of weak attractor, in $\cite{GH2}$.
|
[{'version': 'v1', 'created': 'Wed, 14 Sep 2016 01:57:39 GMT'}]
|
2016-09-15
|
[array(['Zhou', 'Guoli', ''], dtype=object)
array(['Guo', 'Yanfeng', ''], dtype=object)]
|
5,009 |
1606.03051
|
Gregorio Landi
|
Gregorio Landi, Giovanni E. Landi
|
Augmenting momentum resolution with well tuned probability distributions
|
15 pages, 5 figures with captions
| null | null |
unifi-dep-fis-16-06-9
|
physics.ins-det
|
http://creativecommons.org/publicdomain/zero/1.0/
|
The realistic probability distributions of a previous article are applied to
the reconstruction of tracks in constant magnetic field. The complete forms and
their schematic approximations produce excellent momentum estimations,
drastically better than standard fits. A simplified derivation of one of our
probability distributions is illustrated. The momentum reconstructions are
compared with standard fits (least squares) with two different position
algorithms: the eta-algorithm and the two-strip center of gravity. The quality
of our results are expressed as the increase of the magnetic field and
signal-to-noise ratio that overlap the standard fit reconstructions with ours
best distributions. The data and the simulations are tuned on the tracker of a
running experiment and its double sided microstrip detectors, here each
detector side is simulated to measure the magnetic bending. To overlap with our
best distributions, the magnetic field must be increased by a factor 1.5 for
the least squares based on the eta-algorithm and 1.8 for the two-strip center
of gravity for the low noise side, and 1.8 and 2.0 for the high noise side. The
signal-to-noise ratio must be increased by 1.6 for the low noise side and 2.2
for the high noise side (eta-algorithms). The fits, built on the positioning
with the center of gravity, are not modified by a reduction of the
signal-to-noise ratio.}
|
[{'version': 'v1', 'created': 'Thu, 9 Jun 2016 18:26:45 GMT'}]
|
2016-06-10
|
[array(['Landi', 'Gregorio', ''], dtype=object)
array(['Landi', 'Giovanni E.', ''], dtype=object)]
|
5,010 |
1206.1705
|
Bastian M. Wojek
|
P. Dziawa, B. J. Kowalski, K. Dybko, R. Buczko, A. Szczerbakow, M.
Szot, E. {\L}usakowska, T. Balasubramanian, B. M. Wojek, M. H. Berntsen, O.
Tjernberg and T. Story
|
Topological crystalline insulator states in Pb(1-x)Sn(x)Se
|
v2: published revised manuscript (6 pages, 3 figures) and
supplementary information (5 pages, 8 figures)
|
Nature Materials 11, 1023-1027 (2012)
|
10.1038/nmat3449
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Topological insulators are a novel class of quantum materials in which
time-reversal symmetry, relativistic (spin-orbit) effects and an inverted band
structure result in electronic metallic states on the surfaces of bulk
crystals. These helical states exhibit a Dirac-like energy dispersion across
the bulk bandgap, and they are topologically protected. Recent theoretical
proposals have suggested the existence of topological crystalline insulators, a
novel class of topological insulators in which crystalline symmetry replaces
the role of time-reversal symmetry in topological protection [1,2]. In this
study, we show that the narrow-gap semiconductor Pb(1-x)Sn(x)Se is a
topological crystalline insulator for x=0.23. Temperature-dependent
magnetotransport measurements and angle-resolved photoelectron spectroscopy
demonstrate that the material undergoes a temperature-driven topological phase
transition from a trivial insulator to a topological crystalline insulator.
These experimental findings add a new class to the family of topological
insulators. We expect these results to be the beginning of both a considerable
body of additional research on topological crystalline insulators as well as
detailed studies of topological phase transitions.
|
[{'version': 'v1', 'created': 'Fri, 8 Jun 2012 09:11:35 GMT'}
{'version': 'v2', 'created': 'Thu, 15 Aug 2013 13:21:07 GMT'}]
|
2013-08-16
|
[array(['Dziawa', 'P.', ''], dtype=object)
array(['Kowalski', 'B. J.', ''], dtype=object)
array(['Dybko', 'K.', ''], dtype=object)
array(['Buczko', 'R.', ''], dtype=object)
array(['Szczerbakow', 'A.', ''], dtype=object)
array(['Szot', 'M.', ''], dtype=object)
array(['Łusakowska', 'E.', ''], dtype=object)
array(['Balasubramanian', 'T.', ''], dtype=object)
array(['Wojek', 'B. M.', ''], dtype=object)
array(['Berntsen', 'M. H.', ''], dtype=object)
array(['Tjernberg', 'O.', ''], dtype=object)
array(['Story', 'T.', ''], dtype=object)]
|
5,011 |
1502.01156
|
Zhang Zhenhui
|
Yazhou Hu, Miao Li, Nan Li, Zhenhui Zhang
|
Holographic Dark Energy with Cosmological Constant
|
17 pages, 6 figures
|
JCAP08(2015)012
|
10.1088/1475-7516/2015/08/012
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Inspired by the multiverse scenario, we study a heterotic dark energy model
in which there are two parts, the first being the cosmological constant and the
second being the holographic dark energy, thus this model is named the
$\Lambda$HDE model. By studying the $\Lambda$HDE model theoretically, we find
that the parameters $d$ and $\Omega_{hde}$ are divided into a few domains in
which the fate of the universe is quite different. We investigate dynamical
behaviors of this model, and especially the future evolution of the universe.
We perform fitting analysis on the cosmological parameters in the $\Lambda$HDE
model by using the recent observational data. We find the model yields
$\chi^2_{\rm min}=426.27$ when constrained by $\rm Planck+SNLS3+BAO+HST$,
comparable to the results of the HDE model (428.20) and the concordant
$\Lambda$CDM model (431.35). At 68.3\% CL, we obtain
$-0.07<\Omega_{\Lambda0}<0.68$ and correspondingly $0.04<\Omega_{hde0}<0.79$,
implying at present there is considerable degeneracy between the holographic
dark energy and cosmological constant components in the $\Lambda$HDE model.
|
[{'version': 'v1', 'created': 'Wed, 4 Feb 2015 11:07:59 GMT'}
{'version': 'v2', 'created': 'Tue, 11 Aug 2015 10:08:32 GMT'}]
|
2015-08-12
|
[array(['Hu', 'Yazhou', ''], dtype=object)
array(['Li', 'Miao', ''], dtype=object)
array(['Li', 'Nan', ''], dtype=object)
array(['Zhang', 'Zhenhui', ''], dtype=object)]
|
5,012 |
2101.09596
|
Wendy Chan
|
Wendy Chan
|
The Role of Distributional Overlap on the Precision Gain of Bounds for
Generalization
| null | null | null | null |
stat.ME
|
http://creativecommons.org/licenses/by/4.0/
|
Over the past ten years, propensity score methods have made an important
contribution to improving generalizations from studies that do not select
samples randomly from a population of inference. However, these methods require
assumptions and recent work has considered the role of bounding approaches that
provide a range of treatment impact estimates that are consistent with the
observable data. An important limitation to bound estimates is that they can be
uninformatively wide. This has motivated research on the use of propensity
score stratification to narrow bounds. This article assesses the role of
distributional overlap in propensity scores on the effectiveness of
stratification to tighten bounds. Using the results of two simulation studies
and two case studies, I evaluate the relationship between distributional
overlap and precision gain and discuss the implications when propensity score
stratification is used as a method to improve precision in the bounding
framework.
|
[{'version': 'v1', 'created': 'Sat, 23 Jan 2021 22:25:03 GMT'}]
|
2021-01-26
|
[array(['Chan', 'Wendy', ''], dtype=object)]
|
5,013 |
astro-ph/0212486
|
Robert Laing
|
R. A. Laing (1 and 2), J.R. Canvin (1), A.H. Bridle (3) ((1) Oxford,
(2) RAL, (3) NRAO)
|
The physics of jets in FR I radio galaxies
|
4 pages, 2 figures, to appear in The Physics of Relativistic Jets in
the Chandra and XMM Era, eds G. Brunetti, D.E. Harris, R.M. Sambruna, G.
Setti, New Astronomy Reviews
|
New Astron.Rev. 47 (2003) 577-579
|
10.1016/S1387-6473(03)00097-6
| null |
astro-ph
| null |
We model jets in low-luminosity (FR I) radio galaxies as intrinsically
symmetrical, axisymmetric, decelerating relativistic flows with transverse
velocity gradients. This allows us to derive velocity fields and the
three-dimensional distributions of magnetic-field ordering and rest-frame
emissivity. A conservation-law analysis, combining the kinematic model with
X-ray observations of the surrounding IGM, gives the profiles of internal
density, pressure, Mach number and entrainment rate along the jets. We
summarize our recently-published results on 3C 31 and outline new work on other
sources and adiabatic jet models.
|
[{'version': 'v1', 'created': 'Fri, 20 Dec 2002 15:18:51 GMT'}]
|
2009-11-07
|
[array(['Laing', 'R. A.', '', '1 and 2'], dtype=object)
array(['Canvin', 'J. R.', ''], dtype=object)
array(['Bridle', 'A. H.', ''], dtype=object)]
|
5,014 |
2302.14143
|
Anna Stokke
|
Joshua Basman Monterrubio, Graeme Henrickson and Anna Stokke
|
Cyclic Sieving for a Family of Semistandard Tableaux
|
To appear in Australas. J. Combin
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give a new cyclic sieving phenomenon for semistandard Young tableaux
$SSYT(\lambda,\mu)$ of shape $\lambda=(m,n^b)$ and content $\mu$, a
$(b+2)$-tuple. We prove that $(SSYT(\lambda,\mu),\langle \partial^{b+2}
\rangle, f(q))$ exhibits the cyclic sieving phenomenon, where $\partial$ is the
jeu de taquin promotion operator and $f(q)$ is a modified Kostka-Foulkes
polynomial $\widetilde{K}_{\lambda,\mu}(q)$, up to a power of $q$.
|
[{'version': 'v1', 'created': 'Mon, 27 Feb 2023 20:58:59 GMT'}]
|
2023-03-01
|
[array(['Monterrubio', 'Joshua Basman', ''], dtype=object)
array(['Henrickson', 'Graeme', ''], dtype=object)
array(['Stokke', 'Anna', ''], dtype=object)]
|
5,015 |
2204.13685
|
Shuxiang Zhou
|
Shuxiang Zhou, Chao Jiang, Enda Xiao, Michael W.D. Cooper, Miaomiao
Jin, Chris A. Marianetti, David H Hurley, Marat Khafizov
|
Improving empirical interatomic potentials for predicting thermophysical
properties by using an irreducible derivatives approach: The case of thorium
dioxide
| null | null | null | null |
cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by/4.0/
|
The accuracy of physical property predictions using classical molecular
dynamics simulations is determined by the quality of the empirical interatomic
potentials (EIPs). We introduce a training approach for EIPs, based on direct
comparisons of the second- and third-order interatomic force constants (IFCs)
between EIP and density functional theory (DFT) calculations. This work's
unique aspect is the utilization of irreducible derivatives (IDs) of the total
energy, which leverage on the symmetry of the crystalline structure and provide
a minimal representation of the IFCs. Our approach is tailored toward accurate
predictions of thermal conductivity, thus requiring knowledge of both harmonic
and anharmonic IFCs by matching second- and third-order displacement
derivatives, whereas second-order strain derivatives are needed for determining
the elastic constants. We demonstrate this approach as an efficient and robust
manner in which to train EIPs for predicting phonons and related properties, by
optimizing parameters of an embedded-atom method potential for ThO$_2$, which
is used as a model system for fluorite oxides. Our ID-trained EIP provides
thermophysical properties in great agreement with DFT, and outperforms
previously widely utilized EIP for ThO$_2$ in phonon dispersion and thermal
conductivity calculations. It also provides reasonable estimates of thermal
expansion and the formation energies of simple defects.
|
[{'version': 'v1', 'created': 'Thu, 28 Apr 2022 17:48:54 GMT'}]
|
2022-04-29
|
[array(['Zhou', 'Shuxiang', ''], dtype=object)
array(['Jiang', 'Chao', ''], dtype=object)
array(['Xiao', 'Enda', ''], dtype=object)
array(['Cooper', 'Michael W. D.', ''], dtype=object)
array(['Jin', 'Miaomiao', ''], dtype=object)
array(['Marianetti', 'Chris A.', ''], dtype=object)
array(['Hurley', 'David H', ''], dtype=object)
array(['Khafizov', 'Marat', ''], dtype=object)]
|
5,016 |
2112.04878
|
Zhen-Hua Zhang
|
Zhen-Hua Zhang
|
The pollution to the $K\pi$-puzzle from the isospin-breaking
$\pi^0-\eta-\eta'$ mixing effect
|
7 pages, with no figure
| null |
10.1088/1674-1137/ac7317
| null |
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
The influence of the isospin-breaking $\pi^0\!\!-\!\eta\!-\!\eta'$ mixing
effect on the $CP$-asymmetries of $B\to K\pi$ processes is examined for the
first time. It is found that this mixing effect brings a large uncertainty both
to the $CP$-asymmetry sum rule of $B\to K\pi$ processes and the $CP$-asymmetry
difference of the $B^+\to K^+\pi^0$ and $B^0\to K^+\pi^-$, obscuring the
significance of the $K\pi$-puzzle. This uncertainty can be so large that it is
even possible to explain the $K\pi$-puzzle by the $\pi^0\!\!-\!\eta\!-\!\eta'$
mixing effect {\it alone}.
|
[{'version': 'v1', 'created': 'Thu, 9 Dec 2021 13:04:27 GMT'}]
|
2022-09-14
|
[array(['Zhang', 'Zhen-Hua', ''], dtype=object)]
|
5,017 |
2303.02832
|
Michael Ash
|
J Marshall Ash and Michael Ash and Rafael Ash and \'Angel Plaza
|
Iterated harmonic numbers
|
13 pages, 2 figures
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The harmonic numbers are the sequence 1, 1+1/2, 1+1/2+1/3, ... Their
asymptotic difference from the sequence of the natural logarithm of the
positive integers is Euler's constant gamma. We define a family of natural
generalizations of the harmonic numbers. The jth iterated harmonic numbers are
a sequence of rational numbers that nests the previous sequences and relates in
a similar way to the sequence of the jth iterate of the natural logarithm of
positive integers. The analogues of several well-known properties of the
harmonic numbers also hold for the iterated harmonic numbers, including a
generalization of Euler's constant. We reproduce the proof that only the first
harmonic number is an integer and, providing some numeric evidence for the
cases j = 2 and j = 3, conjecture that the same result holds for all iterated
harmonic numbers. We also review another proposed generalization of harmonic
numbers.
|
[{'version': 'v1', 'created': 'Mon, 6 Mar 2023 01:56:30 GMT'}
{'version': 'v2', 'created': 'Tue, 11 Apr 2023 12:50:01 GMT'}]
|
2023-04-12
|
[array(['Ash', 'J Marshall', ''], dtype=object)
array(['Ash', 'Michael', ''], dtype=object)
array(['Ash', 'Rafael', ''], dtype=object)
array(['Plaza', 'Ángel', ''], dtype=object)]
|
5,018 |
0709.3735
|
Amelia \'Alvarez S\'anchez
|
Amelia \'Alvarez S\'anchez, Carlos Sancho de Salas and Pedro Sancho de
Salas
|
Functorial Cartier duality
|
12 pages
| null | null | null |
math.AG
| null |
In this paper we obtain the Cartier duality for k-schemes of commutative
monoids functorially without providing the vector spaces of functions with a
topology, generalizing a result for finite commutative algebraic groups by M.
Demazure and P. Gabriel.
|
[{'version': 'v1', 'created': 'Mon, 24 Sep 2007 11:14:25 GMT'}]
|
2007-09-25
|
[array(['Sánchez', 'Amelia Álvarez', ''], dtype=object)
array(['de Salas', 'Carlos Sancho', ''], dtype=object)
array(['de Salas', 'Pedro Sancho', ''], dtype=object)]
|
5,019 |
1508.05458
|
Christino Tamon
|
Ethan Ackelsberg and Zachary Brehm and Ada Chan and Joshua Mundinger
and Christino Tamon
|
Laplacian State Transfer in Coronas
|
12 pages, 4 figures
|
Linear Algebra and Its Applications 506:154-167, 2016
| null | null |
quant-ph math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that the corona product of two graphs has no Laplacian perfect state
transfer whenever the first graph has at least two vertices. This complements a
result of Coutinho and Liu who showed that no tree of size greater than two has
Laplacian perfect state transfer. In contrast, we prove that the corona product
of two graphs exhibits Laplacian pretty good state transfer, under some mild
conditions. This provides the first known examples of families of graphs with
Laplacian pretty good state transfer. Our result extends of the work of Fan and
Godsil on double stars to the Laplacian setting. Moreover, we also show that
the corona product of any cocktail party graph with a single vertex graph has
Laplacian pretty good state transfer, even though odd cocktail party graphs
have no perfect state transfer.
|
[{'version': 'v1', 'created': 'Sat, 22 Aug 2015 02:28:07 GMT'}]
|
2017-01-17
|
[array(['Ackelsberg', 'Ethan', ''], dtype=object)
array(['Brehm', 'Zachary', ''], dtype=object)
array(['Chan', 'Ada', ''], dtype=object)
array(['Mundinger', 'Joshua', ''], dtype=object)
array(['Tamon', 'Christino', ''], dtype=object)]
|
5,020 |
1109.2010
|
Andrea Petrucci
|
F. Cardone, R. Mignani and A. Petrucci
|
The Principle of Solidarity: Geometrical Description of Interactions
| null |
In: Einstein and Hilbert: Dark Matter Editor: V. V. Dvoeglazov,
pp. 19-36 ISBN 978-1-61324-840-9c 2011 Nova Science Publishers, Inc
| null | null |
physics.gen-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We discuss the possibility of geometrizing interactions by exploiting the
"principle of solidarity" between space-time and the physical phenomena
occurring in it (formulated by the Italian matematician B. Finzi in 1955). This
is accomplished by means of a deformation of the Minkowski metric, implemented
by assuming that the metric coefficients depend on the energy of the process
considered. Such a formalism ("Deformed Special Relativity") allows one, among
the others, to deal with the breakdown of Lorentz invariance and to recover it
in a generalized sense.
|
[{'version': 'v1', 'created': 'Thu, 8 Sep 2011 10:39:07 GMT'}]
|
2011-09-12
|
[array(['Cardone', 'F.', ''], dtype=object)
array(['Mignani', 'R.', ''], dtype=object)
array(['Petrucci', 'A.', ''], dtype=object)]
|
5,021 |
1204.0568
|
Jiongmin Yong
|
Jiongmin Yong
|
Time-Inconsistent Optimal Control Problems and the Equilibrium HJB
Equation
|
51 pages
| null | null | null |
math.OC math.AP math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A general time-inconsistent optimal control problem is considered for
stochastic differential equations with deterministic coefficients. Under
suitable conditions, a Hamilton-Jacobi-Bellman type equation is derived for the
equilibrium value function of the problem. Well-posedness and some properties
of such an equation is studied, and time-consistent equilibrium strategies are
constructed. As special cases, the linear-quadratic problem and a generalized
Merton's portfolio problem are investigated.
|
[{'version': 'v1', 'created': 'Tue, 3 Apr 2012 01:14:59 GMT'}]
|
2012-04-04
|
[array(['Yong', 'Jiongmin', ''], dtype=object)]
|
5,022 |
2210.11584
|
Yao Rong
|
Yao Rong, Tobias Leemann, Thai-trang Nguyen, Lisa Fiedler, Peizhu
Qian, Vaibhav Unhelkar, Tina Seidel, Gjergji Kasneci, Enkelejda Kasneci
|
Towards Human-centered Explainable AI: User Studies for Model
Explanations
| null | null | null | null |
cs.AI cs.HC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Explainable AI (XAI) is widely viewed as a sine qua non for ever-expanding AI
research. A better understanding of the needs of XAI users, as well as
human-centered evaluations of explainable models are both a necessity and a
challenge. In this paper, we explore how HCI and AI researchers conduct user
studies in XAI applications based on a systematic literature review. After
identifying and thoroughly analyzing 85 core papers with human-based XAI
evaluations over the past five years, we categorize them along the measured
characteristics of explanatory methods, namely trust, understanding, fairness,
usability, and human-AI team performance. Our research shows that XAI is
spreading more rapidly in certain application domains, such as recommender
systems than in others, but that user evaluations are still rather sparse and
incorporate hardly any insights from cognitive or social sciences. Based on a
comprehensive discussion of best practices, i.e., common models, design
choices, and measures in user studies, we propose practical guidelines on
designing and conducting user studies for XAI researchers and practitioners.
Lastly, this survey also highlights several open research directions,
particularly linking psychological science and human-centered XAI.
|
[{'version': 'v1', 'created': 'Thu, 20 Oct 2022 20:53:00 GMT'}
{'version': 'v2', 'created': 'Sun, 4 Dec 2022 01:31:31 GMT'}]
|
2022-12-06
|
[array(['Rong', 'Yao', ''], dtype=object)
array(['Leemann', 'Tobias', ''], dtype=object)
array(['Nguyen', 'Thai-trang', ''], dtype=object)
array(['Fiedler', 'Lisa', ''], dtype=object)
array(['Qian', 'Peizhu', ''], dtype=object)
array(['Unhelkar', 'Vaibhav', ''], dtype=object)
array(['Seidel', 'Tina', ''], dtype=object)
array(['Kasneci', 'Gjergji', ''], dtype=object)
array(['Kasneci', 'Enkelejda', ''], dtype=object)]
|
5,023 |
astro-ph/0304428
|
Yasuko S. Honda
|
Mitsuru Honda and Yasuko. S. Honda
|
On Exact Polytropic Equilibria of Self-Gravitating Gaseous and Radiative
Systems: Their Application to Molecular Cloud Condensation
|
5 pages, 3 figures, 1 table. Accepted for publication in MNRAS
|
Mon.Not.Roy.Astron.Soc. 341 (2003) 164
|
10.1046/j.1365-8711.2003.06399.x
| null |
astro-ph
| null |
We propose a novel mathematical method to construct an exact polytropic
sphere in self-gravitating hydrostatic equilibrium, improving the non-linear
Poisson equation. The central boundary condition for the present equation
requires a ratio of gas pressure to total one at the centre, which is uniquely
identified by the whole mass and molecular weight of the system. The special
solution derived from the Lane-Emden equation can be reproduced. This scheme is
now available for modelling the molecular cloud cores in interstellar media.
The mass-radius relation of the first core is found to be consistent with the
recent results of radiation hydrodynamic simulations.
|
[{'version': 'v1', 'created': 'Thu, 24 Apr 2003 00:18:12 GMT'}]
|
2009-11-07
|
[array(['Honda', 'Mitsuru', ''], dtype=object)
array(['Honda', 'Yasuko. S.', ''], dtype=object)]
|
5,024 |
2301.00772
|
Hong-Yu Zhou
|
Hong-Yu Zhou, Chixiang Lu, Chaoqi Chen, Sibei Yang, Yizhou Yu
|
PCRLv2: A Unified Visual Information Preservation Framework for
Self-supervised Pre-training in Medical Image Analysis
|
Accepted by IEEE TPAMI. Codes and pre-trained models are available at
\url{https://github.com/RL4M/PCRLv2}
| null | null | null |
cs.CV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recent advances in self-supervised learning (SSL) in computer vision are
primarily comparative, whose goal is to preserve invariant and discriminative
semantics in latent representations by comparing siamese image views. However,
the preserved high-level semantics do not contain enough local information,
which is vital in medical image analysis (e.g., image-based diagnosis and tumor
segmentation). To mitigate the locality problem of comparative SSL, we propose
to incorporate the task of pixel restoration for explicitly encoding more
pixel-level information into high-level semantics. We also address the
preservation of scale information, a powerful tool in aiding image
understanding but has not drawn much attention in SSL. The resulting framework
can be formulated as a multi-task optimization problem on the feature pyramid.
Specifically, we conduct multi-scale pixel restoration and siamese feature
comparison in the pyramid. In addition, we propose non-skip U-Net to build the
feature pyramid and develop sub-crop to replace multi-crop in 3D medical
imaging. The proposed unified SSL framework (PCRLv2) surpasses its
self-supervised counterparts on various tasks, including brain tumor
segmentation (BraTS 2018), chest pathology identification (ChestX-ray,
CheXpert), pulmonary nodule detection (LUNA), and abdominal organ segmentation
(LiTS), sometimes outperforming them by large margins with limited annotations.
|
[{'version': 'v1', 'created': 'Mon, 2 Jan 2023 17:47:27 GMT'}]
|
2023-01-03
|
[array(['Zhou', 'Hong-Yu', ''], dtype=object)
array(['Lu', 'Chixiang', ''], dtype=object)
array(['Chen', 'Chaoqi', ''], dtype=object)
array(['Yang', 'Sibei', ''], dtype=object)
array(['Yu', 'Yizhou', ''], dtype=object)]
|
5,025 |
0903.1850
|
Burzin Bhavnagri
|
Burzin Bhavnagri
|
Free actions and Grassmanian variety
|
fixed matrices lost in latex and numbered equations
| null | null | null |
math.AG cs.CV q-bio.NC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An algebraic notion of representational consistency is defined. A theorem
relating it to free actions is proved. A metrizability problem of the quotient
(a shape space) is discussed. This leads to a new algebraic variety with a
metrizability result. A concrete example is given from stereo vision.
|
[{'version': 'v1', 'created': 'Wed, 11 Mar 2009 06:52:53 GMT'}]
|
2009-03-18
|
[array(['Bhavnagri', 'Burzin', ''], dtype=object)]
|
5,026 |
1904.11286
|
Irene Palacio
|
I. Palacio, L. Aballe, M. Foerster, D. G. de Oteyza, M.
Garc\'ia-Hern\'andez, J.A. Mart\'in-Gago
|
Reversible Graphene decoupling by NaCl photo-dissociation
| null |
2D Mater.6 025021 (2019)
|
10.1088/2053-1583/ab056e
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We describe the reversible intercalation of Na under graphene on Ir(111) by
photo-dissociation of a previously adsorbed NaCl overlayer. After room
temperature evaporation, NaCl adsorbs on top of graphene forming a bilayer.
With a combination of electron diffraction and photoemission techniques we
demonstrate that the NaCl overlayer dissociates upon a short exposure to an
X-ray beam. As a result, chlorine desorbs while sodium intercalates under the
graphene, inducing an electronic decoupling from the underlying metal. Low
energy electron diffraction shows the disappearance of the moir\'e pattern when
Na intercalates between graphene and iridium. Analysis of the Na 2p core-level
by X-ray photoelectron spectroscopy shows a chemical change from NaCl to
metallic buried Na at the graphene/Ir interface. The intercalation-decoupling
process leads to a n-doped graphene due to the charge transfer from the Na, as
revealed by constant energy angle resolved X-ray photoemission maps. Moreover,
the process is reversible by a mild annealing of the samples without damaging
the graphene.
|
[{'version': 'v1', 'created': 'Thu, 25 Apr 2019 12:17:15 GMT'}]
|
2019-04-26
|
[array(['Palacio', 'I.', ''], dtype=object)
array(['Aballe', 'L.', ''], dtype=object)
array(['Foerster', 'M.', ''], dtype=object)
array(['de Oteyza', 'D. G.', ''], dtype=object)
array(['García-Hernández', 'M.', ''], dtype=object)
array(['Martín-Gago', 'J. A.', ''], dtype=object)]
|
5,027 |
1203.1207
|
Tr\'esor Ekanga (UMR de Paris Centre IMJ-PRG-CNRS)
|
Tr\'esor Ekanga (UMR 7586 IMJ-PRG-CNRS de PARIS CENTRE)
|
On two-particle Anderson localization at low energies
| null |
Comptes Rendus Math\'ematique Acad\'emie des sciences Paris Ser. I
Vol. 349, N{\deg} 3-4, pp 167-170 (2011)
|
10.1016/j.crma.2010.11.003
| null |
math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove exponential spectral localization in a two-particle lattice Anderson
model, with a short-range interaction and external random i.i.d. potential, at
sufficiently low energies. The proof is based on the multi-particle multi-scale
analysis developed earlier by Chulaevsky and Suhov (2009) in the case of high
disorder. Our method applies to a larger class of random potentials than in
Aizenman and Warzel (2009) where dynamical localization was proved with the
help of the fractional moment method.
|
[{'version': 'v1', 'created': 'Tue, 6 Mar 2012 14:24:18 GMT'}
{'version': 'v2', 'created': 'Wed, 25 Dec 2013 22:57:14 GMT'}
{'version': 'v3', 'created': 'Tue, 31 Dec 2013 15:54:51 GMT'}]
|
2014-01-03
|
[array(['Ekanga', 'Trésor', '', 'UMR 7586 IMJ-PRG-CNRS de PARIS CENTRE'],
dtype=object) ]
|
5,028 |
2211.04952
|
David Buterez
|
David Buterez, Jon Paul Janet, Steven J. Kiddle, Dino Oglic, Pietro
Li\`o
|
Graph Neural Networks with Adaptive Readouts
|
Published at NeurIPS 2022. 10 pages, 5 figures, 1 table
| null | null | null |
cs.LG cs.AI
|
http://creativecommons.org/licenses/by/4.0/
|
An effective aggregation of node features into a graph-level representation
via readout functions is an essential step in numerous learning tasks involving
graph neural networks. Typically, readouts are simple and non-adaptive
functions designed such that the resulting hypothesis space is permutation
invariant. Prior work on deep sets indicates that such readouts might require
complex node embeddings that can be difficult to learn via standard
neighborhood aggregation schemes. Motivated by this, we investigate the
potential of adaptive readouts given by neural networks that do not necessarily
give rise to permutation invariant hypothesis spaces. We argue that in some
problems such as binding affinity prediction where molecules are typically
presented in a canonical form it might be possible to relax the constraints on
permutation invariance of the hypothesis space and learn a more effective model
of the affinity by employing an adaptive readout function. Our empirical
results demonstrate the effectiveness of neural readouts on more than 40
datasets spanning different domains and graph characteristics. Moreover, we
observe a consistent improvement over standard readouts (i.e., sum, max, and
mean) relative to the number of neighborhood aggregation iterations and
different convolutional operators.
|
[{'version': 'v1', 'created': 'Wed, 9 Nov 2022 15:21:09 GMT'}]
|
2022-11-10
|
[array(['Buterez', 'David', ''], dtype=object)
array(['Janet', 'Jon Paul', ''], dtype=object)
array(['Kiddle', 'Steven J.', ''], dtype=object)
array(['Oglic', 'Dino', ''], dtype=object)
array(['Liò', 'Pietro', ''], dtype=object)]
|
5,029 |
1304.0996
|
Valeria Banica
|
Valeria Banica, Luis Vega
|
The initial value problem for the binormal flow with rough data
|
34 pages, 3 figures, revised version, to appear in Ann. Sci. \'Ec.
Norm. Sup\'er. (4)
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this article we consider the initial value problem of the binormal flow
with initial data given by curves that are regular except at one point where
they have a corner. We prove that under suitable conditions on the initial data
a unique regular solution exists for strictly positive and strictly negative
times. Moreover, this solution satisfies a weak version of the equation for all
times and can be seen as a perturbation of a suitably chosen self-similar
solution. Conversely, we also prove that if at time t = 1 a small regular
perturbation of a self-similar solution is taken as initial condition then
there exists a unique solution that at time t = 0 is regular except at a point
where it has a corner with the same angle as the one of the self-similar
solution. This solution can be extended for negative times. The proof uses the
full strength of the previous papers [9], [2], [3] and [4] on the study of
small perturbations of self-similar solutions. A compactness argument is used
to avoid the weighted conditions we needed in [4], as well as a more refined
analysis of the asymptotic in time and in space of the tangent and normal
vectors.
|
[{'version': 'v1', 'created': 'Wed, 3 Apr 2013 15:59:19 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Mar 2014 16:38:18 GMT'}]
|
2014-03-18
|
[array(['Banica', 'Valeria', ''], dtype=object)
array(['Vega', 'Luis', ''], dtype=object)]
|
5,030 |
astro-ph/0406480
|
John Conway
|
J.E.Conway, M.Elitzur, R.Parra
|
Spectral line and continuum radiation propagation in a clumpy medium
|
6 pages, 1 Figure. Accepted for publication by ApSS. Proc of
conference on 'Dense Molecular gas around protostars and in galactic Nuclei'.
Zwolle, Netherlands, Feb 17th - 20th, 2004
| null |
10.1007/s10509-005-3733-7
| null |
astro-ph
| null |
We discuss the propagation of spectral line and continuum radiation in a
clumpy medium and give general expressions for the observed absorption or
emission from a cloud population. We show that the affect of the medium
clumpiness can usually be characterised by a single number multiplying the mean
column opacity. Our result provides a simpler proof and generalisation of the
result of Martin et al (1984). The formalism provides a simple way to
understand the effects of clumping on molecular line profiles and ratios, for
example how clumping effects the interpretation of 13CO(1-0) to 12CO(1-0) line
ratios. It can also be used as a propagation operator in physical models of
clumpy media where the incident radiation effects the spectral line emissivity.
We are working to extend the formalism to the propagation of masers in a clumpy
medium, but in this case there are special difficulties because formal
expectation values are not characteristic of observations because they are
biased by rare events.
|
[{'version': 'v1', 'created': 'Tue, 22 Jun 2004 11:55:07 GMT'}]
|
2009-11-10
|
[array(['Conway', 'J. E.', ''], dtype=object)
array(['Elitzur', 'M.', ''], dtype=object)
array(['Parra', 'R.', ''], dtype=object)]
|
5,031 |
2109.04851
|
Gagandeep Singh Dr.
|
G. Singh, Jagjit Singh, J. Casal, L. Fortunato
|
Exploring the halo character and dipole response in the dripline nucleus
$^{31}$F
|
15 pages with 20 figures and two tables
|
Physical Review C 105, 014328 (2022)
|
10.1103/PhysRevC.105.014328
| null |
nucl-th nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Lying at the lower edge of the `island of inversion', neutron-rich Fluorine
isotopes ($^{29-31}$F) provide a curious case to study the configuration mixing
in this part of the nuclear landscape. Recent studies have suggested that a
prospective two-neutron halo in the dripline nucleus $^{31}$F could be linked
to the occupancy of the $pf$ intruder configurations. Focusing on configuration
mixing, matter radii and neutron-neutron ($nn$) correlations in the
ground-state of $^{31}$F, we explore various scenarios to analyze its possible
halo nature as well as the low-lying electric dipole ($E$1) response within a
three-body approach. We use an analytical, transformed harmonic oscillator
basis under the aegis of a hyperspherical formalism to construct the ground
state three-body wave function of $^{31}$F. The $^{31}$F ground-state
configuration mixing and its matter radius are computed for different choices
of the $^{30}$F structure coupled to the valence neutron. The admixture of
{$p_{3/2}$, $d_{3/2}$, and $f_{7/2}$} components is found to play an important
role, favouring the dominance of inverted configurations with dineutron spreads
for two-neutron halo formation. The increase in matter radius with respect to
the core radius, $\Delta r \geqslant$ 0.30 fm and the dipole distributions
along with the integrated $B(E1)$ strengths of $\geqslant$ 2.6 $e^2$fm$^2$ are
large enough to be compatible with other two-neutron halo nuclei. Three-body
results for $^{31}$F indicate a large spatial extension in its ground state due
to the inversion of the energy levels of the normal shell model scheme. The
increase is augmented by and is proportional to the extent of the $p_{3/2}$
component in the wave function. Additionally, the enhanced dipole distributions
and large $B(E1)$ strengths all point to the two-neutron halo character of
$^{31}$F.
|
[{'version': 'v1', 'created': 'Fri, 10 Sep 2021 13:05:56 GMT'}
{'version': 'v2', 'created': 'Tue, 1 Feb 2022 14:50:44 GMT'}]
|
2022-02-02
|
[array(['Singh', 'G.', ''], dtype=object)
array(['Singh', 'Jagjit', ''], dtype=object)
array(['Casal', 'J.', ''], dtype=object)
array(['Fortunato', 'L.', ''], dtype=object)]
|
5,032 |
quant-ph/0602106
|
Tom Boness
|
T. Boness, S. Bose, T.S. Monteiro
|
Entanglement and dynamics of spin-chains in periodically-pulsed magnetic
fields: accelerator modes
|
5 pages, 2 figures; minor corrections, tidied presentation
| null |
10.1103/PhysRevLett.96.187201
| null |
quant-ph
| null |
We study the dynamics of a single excitation in a Heisenberg spin-chain
subjected to a sequence of periodic pulses from an external, parabolic,
magnetic field. We show that, for experimentally reasonable parameters, a pair
of counter-propagating coherent states are ejected from the centre of the
chain. We find an illuminating correspondence with the quantum time evolution
of the well-known paradigm of quantum chaos, the Quantum Kicked Rotor (QKR).
From this we can analyse the entanglement production and interpret the
ejected coherent states as a manifestation of so-called `accelerator modes' of
a classically chaotic system.
|
[{'version': 'v1', 'created': 'Mon, 13 Feb 2006 18:39:21 GMT'}
{'version': 'v2', 'created': 'Thu, 2 Mar 2006 11:52:19 GMT'}]
|
2009-11-13
|
[array(['Boness', 'T.', ''], dtype=object)
array(['Bose', 'S.', ''], dtype=object)
array(['Monteiro', 'T. S.', ''], dtype=object)]
|
5,033 |
1712.07152
|
Mahouton Norbert Hounkonnou
|
Mahouton Norbert Hounkonnou and Gbevewou Damien Houndedji
|
Double constructions of Heisenberg Frobenius algebras and Connes
cocycles, and solutions of the three-dimensional associative Yang-Baxter
equation
| null | null | null | null |
math.RA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the three-dimensional associative algebra H consisting of the 3x3
strictly upper triangular matrices whose the commutator is the Heisenberg Lie
algebra. We determine the solutions of the Yang-Baxter associative equation in
H. For the antisymmetric solutions, the corresponding bialgebraic structures,
double constructions of Frobenius algebras and properties are given
explicitly.Besides, we determine some related compatible dendriform algebras
and solutions of their D-equations. Using symmetric solutions of these
equations, we build the double constructions of related Connes cocycles.
Finally, we compute solutions of the three-dimensional non decomposable
associative Yang-Baxter equation and build the double constructions of
associated Frobenius algebras.
|
[{'version': 'v1', 'created': 'Tue, 19 Dec 2017 19:09:33 GMT'}]
|
2017-12-21
|
[array(['Hounkonnou', 'Mahouton Norbert', ''], dtype=object)
array(['Houndedji', 'Gbevewou Damien', ''], dtype=object)]
|
5,034 |
math/0607604
|
Christian Leonard
|
Christian L\'eonard (MODAL'X, CMAP)
|
Characterization of the optimal plans for the Monge-Kantorovich
transport problem
|
39 pages
| null | null | null |
math.OC math.PR
| null |
We present a general method, based on conjugate duality, for solving a convex
minimization problem without assuming unnecessary topological restrictions on
the constraint set. It leads to dual equalities and characterizations of the
minimizers without constraint qualification. As an example of application, the
Monge-Kantorovich optimal transport problem is solved in great detail. In
particular, the optimal transport plans are characterized without restriction.
This characterization improves the already existing literature on the subject.
|
[{'version': 'v1', 'created': 'Mon, 24 Jul 2006 18:53:41 GMT'}]
|
2016-08-16
|
[array(['Léonard', 'Christian', '', "MODAL'X, CMAP"], dtype=object)]
|
5,035 |
1410.5246
|
Changling Zou
|
Chang-Ling Zou, Yan-Lei Zhang, Liang Jiang, Xu-Bo Zou, Guang-Can Guo
|
Incoherent control of electromagnetically induced transparency and
Aulter-Townes splitting
|
4 pages, 4 figures
| null | null | null |
physics.optics quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The absorption and dispersion of probe light is studied in an unified
framework of three-level system, with coherent laser driving and incoherent
pumping and relaxation. The electromagnetically induced transparency (EIT) and
Autler-Townes splitting (ATS) are studied in details. In the phase diagram of
the unified three-level system, there are distinct parameter regimes
corresponding to different lineshapes and mechanisms, and the incoherent
transition could control the cross-over between EIT and ATS. The incoherent
control of the three-level system enables the investigation of various
phenomena in quantum optics, and is beneficial for experiments of light-matter
interactions.
|
[{'version': 'v1', 'created': 'Mon, 20 Oct 2014 12:27:53 GMT'}]
|
2014-10-21
|
[array(['Zou', 'Chang-Ling', ''], dtype=object)
array(['Zhang', 'Yan-Lei', ''], dtype=object)
array(['Jiang', 'Liang', ''], dtype=object)
array(['Zou', 'Xu-Bo', ''], dtype=object)
array(['Guo', 'Guang-Can', ''], dtype=object)]
|
5,036 |
1804.05909
|
Martin Scharlemann
|
Michael Freedman and Martin Scharlemann
|
Powell moves and the Goeritz group
|
39 pages; 17 figures
| null | null |
UCSB Math 2018-11
|
math.GT
|
http://creativecommons.org/publicdomain/zero/1.0/
|
In 1980 J. Powell proposed that five specific elements sufficed to generate
the Goeritz group of any Heegaard splitting of $S^3$, extending work of Goeritz
on genus $2$ splittings. Here we prove that Powell's conjecture was correct for
splittings of genus $3$ as well, and discuss a framework for deciding the truth
of the conjecture for higher genus splittings.
|
[{'version': 'v1', 'created': 'Mon, 16 Apr 2018 19:39:17 GMT'}]
|
2018-04-18
|
[array(['Freedman', 'Michael', ''], dtype=object)
array(['Scharlemann', 'Martin', ''], dtype=object)]
|
5,037 |
2109.06529
|
Pierre Etore
|
Pierre Etor\'e (IPS), Jose R Le\'on (UDELAR), Cl\'ementine Prieur
(AIRSEA)
|
A probabilistic point of view for the Kolmogorov hypoelliptic equations
| null | null | null | null |
math.AP math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we propose a method for solving Kolmogorov hypoelliptic
equations based on Fourier transform and Feynman-Kac formula. We first explain
how the Feynman-Kac formula can be used to compute the fundamental solution to
parabolic equations with linear or quadratic potential. Then applying these
results after a Fourier transform we deduce the computation of the solution to
a a first class of Kolmogorov hypoelliptic equations. Then we solve partial
differential equations obtained via Feynman-Kac formula from the
Ornstein-Uhlenbeck generator. Also, a new small time approximation of the
solution to Kolmogorov hypoelliptic equations is provided. We finally present
the results of numerical experiments to check the practical efficiency of this
approximation.
|
[{'version': 'v1', 'created': 'Tue, 14 Sep 2021 08:51:56 GMT'}
{'version': 'v2', 'created': 'Wed, 15 Mar 2023 09:21:39 GMT'}]
|
2023-03-16
|
[array(['Etoré', 'Pierre', '', 'IPS'], dtype=object)
array(['León', 'Jose R', '', 'UDELAR'], dtype=object)
array(['Prieur', 'Clémentine', '', 'AIRSEA'], dtype=object)]
|
5,038 |
1202.1228
|
Aljaz Godec
|
Aljaz Godec and Franci Merzel
|
Physical origin underlying the entropy loss upon hydrophobic hydration
| null | null | null | null |
cond-mat.stat-mech cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The hydrophobic effect (HE) is commonly associated with the demixing of oil
and water at ambient conditions and plays the leading role in determining the
structure and stability of biomolecular assembly in aqueous solutions. On the
molecular scale HE has an entropic origin. It is believed that hydrophobic
particles induce order in the surrounding water by reducing the volume of con-
figuration space available for hydrogen bonding. Here we show with computer
simulation results that this traditional picture is not correct. Analyzing
collective fluctuations in water clusters we are able to provide a
fundamentally new picture of HE based on pronounced many-body correlations
affecting the switching of hydrogen bonds between molecules. These correlations
emerge as a non-local compensation of reduced fluctuations of local
electrostatic fields in the presence of an apolar solute.
|
[{'version': 'v1', 'created': 'Mon, 6 Feb 2012 18:05:47 GMT'}]
|
2012-02-07
|
[array(['Godec', 'Aljaz', ''], dtype=object)
array(['Merzel', 'Franci', ''], dtype=object)]
|
5,039 |
1511.05524
|
Wendelin Werner
|
Titus Lupu, Wendelin Werner
|
A note on Ising random currents, Ising-FK, loop-soups and the Gaussian
free field
|
5 pages
|
Electronic Communications in Probability 21 (13), 1-7, 2016
|
10.1214/16-ECP4733
| null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We make a few elementary observations that relate directly the items
mentioned in the title. In particular, we note that when one superimposes the
random current model related to the Ising model with an independent Bernoulli
percolation model with well-chosen weights, one obtains exactly the
FK-percolation (or random cluster model) associated with the Ising model. We
also point out that this relation can be interpreted via loop-soups, combining
the description of the sign of a Gaussian Free Field on a discrete graph
knowing its square (and the relation of this question with the FK-Ising model)
with the loop-soup interpretation of the random current model.
|
[{'version': 'v1', 'created': 'Tue, 17 Nov 2015 19:52:07 GMT'}]
|
2020-06-11
|
[array(['Lupu', 'Titus', ''], dtype=object)
array(['Werner', 'Wendelin', ''], dtype=object)]
|
5,040 |
quant-ph/0002029
|
Li You
|
L. You and M. S. Chapman
|
Quantum entanglement using trapped atomic spins
|
minor revisions with an updated discussion on adibatic tranportation
of trapped qubit, 5 pages, 3 figs, resubmitted to PRA
| null |
10.1103/PhysRevA.62.052302
| null |
quant-ph cond-mat
| null |
We propose an implementation for quantum logic and computing using trapped
atomic spins of two different species, interacting via direct magnetic
spin-spin interaction. In this scheme, the spins (electronic or nuclear) of
distantly spaced trapped neutral atoms serve as the qubit arrays for quantum
information processing and storage, and the controlled interaction between two
spins, as required for universal quantum computing, is implemented in a three
step process that involves state swapping with a movable auxiliary spin.
|
[{'version': 'v1', 'created': 'Wed, 9 Feb 2000 23:28:33 GMT'}
{'version': 'v2', 'created': 'Mon, 26 Jun 2000 21:29:35 GMT'}]
|
2009-11-06
|
[array(['You', 'L.', ''], dtype=object)
array(['Chapman', 'M. S.', ''], dtype=object)]
|
5,041 |
1208.4626
|
Misha Verbitsky
|
Ljudmila Kamenova, Misha Verbitsky
|
Families of Lagrangian fibrations on hyperkaehler manifolds
|
13 pages, v. 2.0, added a section about Kobayashi (non-)hyperbolicity
of all known hk manifolds. arXiv admin note: text overlap with
arXiv:1008.2480
|
Advances in Mathematics Volume 260, 1 August 2014, Pages 401-413
| null | null |
math.AG math.DG
|
http://creativecommons.org/licenses/by/3.0/
|
A holomorphic Lagrangian fibration on a holomorphically symplectic manifold
is a holomorphic map with Lagrangian fibers. It is known that a given compact
manifold admits only finitely many holomorphic symplectic structures, up to
deformation. We prove that a given compact manifold with $b_2 \geq 7$ admits
only finitely many deformation types of holomorphic Lagrangian fibrations. We
also prove that all known hyperkahler manifolds are never Kobayashi hyperbolic.
|
[{'version': 'v1', 'created': 'Wed, 22 Aug 2012 21:08:49 GMT'}
{'version': 'v2', 'created': 'Sun, 16 Sep 2012 09:18:40 GMT'}]
|
2014-05-09
|
[array(['Kamenova', 'Ljudmila', ''], dtype=object)
array(['Verbitsky', 'Misha', ''], dtype=object)]
|
5,042 |
hep-ph/9811406
|
Marek Nowakowski
|
Albert Bramon and Marek Nowakowski
|
Bell-inequalities for Entangled Neutral Kaons
|
8 pages, Latex
|
Phys.Rev.Lett. 83 (1999) 1-5
|
10.1103/PhysRevLett.83.1
| null |
hep-ph quant-ph
| null |
We extend the use of Bell-inequalities to $\Phi \to K^0 \bar{K^0}$ decays by
exploiting analogies and differences to the well-known and experimentally
verified singlet-spin case. Contrasting with other analyses, our
Bell-inequalities are violated by quantum mechanics and can strictly be derived
from local realistic theories. In principle, quantum mechanics could then be
tested using unstable, oscillating states governed by a CP-violating
Hamiltonian.
|
[{'version': 'v1', 'created': 'Thu, 19 Nov 1998 16:51:09 GMT'}]
|
2009-10-31
|
[array(['Bramon', 'Albert', ''], dtype=object)
array(['Nowakowski', 'Marek', ''], dtype=object)]
|
5,043 |
1802.05076
|
Caterina Tiburzi
|
Caterina Tiburzi
|
Pulsars probe the low-frequency gravitational sky: Pulsar Timing Arrays
basics and recent results
|
Accepted for publication in PASA, 16 pages, 7 figures
| null |
10.1017/pasa.2018.7
| null |
astro-ph.IM astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Pulsar Timing Array (PTA) experiments exploit the clock-like behaviour of an
array of millisecond pulsars, with the goal of detecting low-frequency
gravitational waves. PTA experiments have been in operation over the last
decade, led by groups in Europe, Australia, and North America. These
experiments use the most sensitive radio telescopes in the world, extremely
precise pulsar timing models and sophisticated detection algorithms to increase
the sensitivity of PTAs. No detection of gravitational waves has been made to
date with this technique, but PTA upper limits already contributed to rule out
some models of galaxy formation. Moreover, a new generation of radio
telescopes, such as the Five hundred metre Aperture Spherical Telescope and, in
particular, the Square Kilometre Array, will offer a significant improvement to
the PTA sensitivity. In this article, we review the basic concepts of PTA
experiments, and discuss the latest results from the established PTA
collaborations.
|
[{'version': 'v1', 'created': 'Wed, 14 Feb 2018 12:55:36 GMT'}]
|
2018-03-28
|
[array(['Tiburzi', 'Caterina', ''], dtype=object)]
|
5,044 |
1105.4092
|
Hans Weber
|
H. J. Weber
|
Less Regular Exceptional and Repeating Prime Number Multiplets
|
14 pages, no figures
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
New exceptional (i.e. non-repeating) prime number multiplets are given and
formulated in terms of arithmetic progressions, along with laws governing them.
Accompanying repeating prime number multiplets are pointed out. Prime number
multiplets with less regular distances are studied.
|
[{'version': 'v1', 'created': 'Fri, 20 May 2011 13:51:57 GMT'}]
|
2011-05-23
|
[array(['Weber', 'H. J.', ''], dtype=object)]
|
5,045 |
0907.3292
|
Jonathan R. Gair
|
Jonathan R Gair, Ilya Mandel, Alberto Sesana, Alberto Vecchio
|
Probing seed black holes using future gravitational-wave detectors
|
14 pages, 6 figures, 2 tables, accepted for proceedings of 13th GWDAW
meeting
|
Class. Quantum Grav. 26 (2009) 204009
|
10.1088/0264-9381/26/20/204009
| null |
gr-qc astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Identifying the properties of the first generation of seeds of massive black
holes is key to understanding the merger history and growth of galaxies.
Mergers between ~100 solar mass seed black holes generate gravitational waves
in the 0.1-10Hz band that lies between the sensitivity bands of existing
ground-based detectors and the planned space-based gravitational wave detector,
the Laser Interferometer Space Antenna (LISA). However, there are proposals for
more advanced detectors that will bridge this gap, including the third
generation ground-based Einstein Telescope and the space-based detector DECIGO.
In this paper we demonstrate that such future detectors should be able to
detect gravitational waves produced by the coalescence of the first generation
of light seed black-hole binaries and provide information on the evolution of
structure in that era. These observations will be complementary to those that
LISA will make of subsequent mergers between more massive black holes. We
compute the sensitivity of various future detectors to seed black-hole mergers,
and use this to explore the number and properties of the events that each
detector might see in three years of observation. For this calculation, we make
use of galaxy merger trees and two different seed black hole mass distributions
in order to construct the astrophysical population of events. We also consider
the accuracy with which networks of future ground-based detectors will be able
to measure the parameters of seed black hole mergers, in particular the
luminosity distance to the source. We show that distance precisions of ~30% are
achievable, which should be sufficient for us to say with confidence that the
sources are at high redshift.
|
[{'version': 'v1', 'created': 'Mon, 20 Jul 2009 15:05:47 GMT'}]
|
2009-10-07
|
[array(['Gair', 'Jonathan R', ''], dtype=object)
array(['Mandel', 'Ilya', ''], dtype=object)
array(['Sesana', 'Alberto', ''], dtype=object)
array(['Vecchio', 'Alberto', ''], dtype=object)]
|
5,046 |
2202.03569
|
Girsh Blumberg
|
A. C. Lee, B. Peng, K. Du, H.-H. Kung, B. Monserrat, S.-W. Cheong, C.
J. Won, and G. Blumberg
|
Chiral Electronic Excitations in a Quasi-2D Rashba System BiTeI
| null | null |
10.1103/PhysRevB.105.L161105
| null |
cond-mat.str-el
|
http://creativecommons.org/licenses/by/4.0/
|
The optical transitions between spin-polarized bands of the quasi-two
dimensional Rashba system BiTeI are investigated using polarization resolved
resonant Raman spectroscopy. We detect chiral excitations between states with
opposite helicity and compare spectra to calculations within a three-band
model. Using the resonant Raman excitation profile, we deduce the Rashba
parameters and band gaps of the higher conduction bands near the Fermi level,
and compare the parameters to values obtained by ab initio density function
theory (DFT).
|
[{'version': 'v1', 'created': 'Tue, 8 Feb 2022 00:14:42 GMT'}
{'version': 'v2', 'created': 'Tue, 26 Apr 2022 01:15:59 GMT'}]
|
2022-04-27
|
[array(['Lee', 'A. C.', ''], dtype=object)
array(['Peng', 'B.', ''], dtype=object)
array(['Du', 'K.', ''], dtype=object)
array(['Kung', 'H. -H.', ''], dtype=object)
array(['Monserrat', 'B.', ''], dtype=object)
array(['Cheong', 'S. -W.', ''], dtype=object)
array(['Won', 'C. J.', ''], dtype=object)
array(['Blumberg', 'G.', ''], dtype=object)]
|
5,047 |
1703.04508
|
Andrey O. Matveev
|
Andrey O. Matveev
|
Pattern Recognition on Oriented Matroids: Decompositions of Topes, and
Dehn-Sommerville Type Relations
|
5 pages
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
If V(R) is the vertex set of a symmetric cycle R in the tope graph of a
simple oriented matroid M, then for any tope T of M there exists a unique
inclusion-minimal subset Q(T;R) of V(R) such that T is the sum of the topes of
Q(T;R).
If |Q(T;R)|>3, then the decomposition Q(T;R) of the tope T with respect to
the symmetric cycle R satisfies certain Dehn-Sommerville type relations.
|
[{'version': 'v1', 'created': 'Mon, 13 Mar 2017 17:49:13 GMT'}]
|
2017-03-14
|
[array(['Matveev', 'Andrey O.', ''], dtype=object)]
|
5,048 |
2201.05094
|
Artur O. Lopes
|
Jader E. Brasil, Josue Knorst and Artur O. Lopes
|
Thermodynamic formalism for continuous-time quantum Markov semigroups:
the detailed balance condition, entropy, pressure and equilibrium quantum
processes
|
Key words: continuous time quantum Markov process, Lindbladian,
detailed balance condition, entropy, pressure, equilibrium quantum processes
| null | null | null |
math-ph math.DS math.MP math.PR quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
$M_n(\mathbb{C})$ denotes the set of $n$ by $n$ complex matrices. Consider
continuous time quantum semigroups $\mathcal{P}_t= e^{t\, \mathcal{L}}$, $t
\geq 0$, where $\mathcal{L}:M_n(\mathbb{C}) \to M_n(\mathbb{C})$ is the
infinitesimal generator. If we assume that $\mathcal{L}(I)=0$, we will call
$e^{t\, \mathcal{L}}$, $t \geq 0$ a quantum Markov semigroup. Given a
stationary density matrix $\rho= \rho_{\mathcal{L}}$, for the quantum Markov
semigroup $\mathcal{P}_t$, $t \geq 0$, we can define a continuous time
stationary quantum Markov process, denoted by $X_t$, $t \geq 0.$ Given an {\it
a priori} Laplacian operator $\mathcal{L}_0:M_n(\mathbb{C}) \to
M_n(\mathbb{C})$, we will present a natural concept of entropy for a class of
density matrices on $M_n(\mathbb{C})$. Given an Hermitian operator
$A:\mathbb{C}^n\to \mathbb{C}^n$ (which plays the role of an Hamiltonian), we
will study a version of the variational principle of pressure for $A$. A
density matrix $\rho_A$ maximizing pressure will be called an equilibrium
density matrix. From $\rho_A$ we will derive a new infinitesimal generator
$\mathcal{L}_A$. Finally, the continuous time quantum Markov process defined by
the semigroup $\mathcal{P}_t= e^{t\, \mathcal{L}_A}$, $t \geq 0$, and an
initial stationary density matrix, will be called the continuous time
equilibrium quantum Markov process for the Hamiltonian $A$. It corresponds to
the quantum thermodynamical equilibrium for the action of the Hamiltonian $A$.
|
[{'version': 'v1', 'created': 'Thu, 13 Jan 2022 17:24:00 GMT'}]
|
2022-01-14
|
[array(['Brasil', 'Jader E.', ''], dtype=object)
array(['Knorst', 'Josue', ''], dtype=object)
array(['Lopes', 'Artur O.', ''], dtype=object)]
|
5,049 |
hep-ph/9512235
|
Irina Filimonova
|
N.E.Tyurin
|
Some Aspects of Spin Physics at RHIC
|
12 pages, Latex, 8 Figures available upon request
| null | null |
IHEP 95-140
|
hep-ph
| null |
We discuss some of the issues to be accounted under conducting spin physics
program at RHIC.
|
[{'version': 'v1', 'created': 'Tue, 5 Dec 1995 13:47:33 GMT'}]
|
2009-09-25
|
[array(['Tyurin', 'N. E.', ''], dtype=object)]
|
5,050 |
1511.01787
|
Zehra P{\i}nar
|
Zehra Pinar, Turgut Ozis
|
The Solutions of Nonlinear Heat Conduction Equation via Fibonacci&Lucas
Approximation Method
|
15 pages
| null | null | null |
math.AP math-ph math.MP nlin.PS nlin.SI
|
http://creativecommons.org/publicdomain/zero/1.0/
|
To obtain new types of exact travelling wave solutions to nonlinear partial
differential equations, a number of approximate methods are known in the
literature. In this study, we extend the class of auxiliary equations of
Fibonnacci&Lucas type equations. The proposed Fibonnacci&Lucas approximation
method produces many new solutions. Consequently, we introduce new exact
travelling wave solutions of some physical systems in terms of these new
solutions of the Fibonacci&Lucas type equation. In addition to using different
ansatz, we use determine different balancing principle to obtain optimal
solutions.
|
[{'version': 'v1', 'created': 'Wed, 4 Nov 2015 11:00:51 GMT'}]
|
2015-11-06
|
[array(['Pinar', 'Zehra', ''], dtype=object)
array(['Ozis', 'Turgut', ''], dtype=object)]
|
5,051 |
2306.16377
|
Andrea Mitridate
|
Andrea Mitridate, David Wright, Richard von Eckardstein, Tobias
Schr\"oder, Jonathan Nay, Ken Olum, Kai Schmitz, Tanner Trickle
|
PTArcade
|
26 pages, 2 figures, 2 tables
| null | null | null |
hep-ph hep-ex
|
http://creativecommons.org/licenses/by/4.0/
|
This is a lightweight manual for PTArcade, a wrapper of ENTERPRISE and ceffyl
that allows for easy implementation of new-physics searches in PTA data. In
this manual, we describe how to get PTArcade installed (either on your local
machine or an HPC cluster). We discuss how to define a stochastic or
deterministic signal and how PTArcade implements these signals in PTA-analysis
pipelines. Finally, we show how to handle and analyze the PTArcade output using
a series of utility functions that come together with PTArcade.
|
[{'version': 'v1', 'created': 'Wed, 28 Jun 2023 17:14:24 GMT'}]
|
2023-06-29
|
[array(['Mitridate', 'Andrea', ''], dtype=object)
array(['Wright', 'David', ''], dtype=object)
array(['von Eckardstein', 'Richard', ''], dtype=object)
array(['Schröder', 'Tobias', ''], dtype=object)
array(['Nay', 'Jonathan', ''], dtype=object)
array(['Olum', 'Ken', ''], dtype=object)
array(['Schmitz', 'Kai', ''], dtype=object)
array(['Trickle', 'Tanner', ''], dtype=object)]
|
5,052 |
astro-ph/0404336
|
Charles Bonatto
|
Charles Bonatto, Eduardo Bica and Daniela Pavani
|
NGC2180: a disrupting open cluster
|
9 pages, 8 figures
|
Astron.Astrophys. 427 (2004) 485-494
|
10.1051/0004-6361:20040453
| null |
astro-ph
| null |
The spatial dependence of luminosity and mass functions of evolved open
clusters is discussed in this work using J and H 2MASS photometry. The target
objects are the overlooked open cluster NGC2180 and the intermediate-age open
cluster NGC3680. We conclude that, although in an advanced dynamical state
(mass segregated), NGC3680 does not present strong signs of dissolution. On the
other hand, NGC2180 presents flat, eroded LFs throughout its structure,
indicating that in addition to mass segregation, Galactic tidal stripping has
been effective in depleting this cluster of stars. Accordingly, NGC2180 may be
the missing link between evolved open clusters and remnants. We study both
clusters in the context of dynamical states estimated from diagnostic-diagrams
involving photometric and structural parameters. Both clusters are dynamically
evolved systems. In particular, NGC2180 is closer to open cluster remnants than
NGC3680.
|
[{'version': 'v1', 'created': 'Fri, 16 Apr 2004 19:05:49 GMT'}]
|
2009-11-10
|
[array(['Bonatto', 'Charles', ''], dtype=object)
array(['Bica', 'Eduardo', ''], dtype=object)
array(['Pavani', 'Daniela', ''], dtype=object)]
|
5,053 |
2012.01579
|
Roberto Zenit
|
V. Angeles, F.A. Godinez, J.A. Puente-Velazquez, R. Mendez, E. Lauga,
R. Zenit
|
Front-back asymmetry controls the impact of viscoelasticity on helical
swimming
| null |
Phys. Rev. Fluids 6, 043102 (2021)
|
10.1103/PhysRevFluids.6.043102
| null |
physics.flu-dyn
|
http://creativecommons.org/licenses/by/4.0/
|
We conduct experiments with force-free magnetically-driven rigid helical
swimmers in Newtonian and viscoelastic (Boger) fluids. By varying the sizes of
the swimmer body and its helical tail, we show that the impact of
viscoelasticity strongly depends on the swimmer geometry: it can lead to a
significant increase of the swimming speed (up to a factor of five), a similar
decrease (also up to a factor of five) or it can have approximately no impact.
Analysis of our data along with theoretical modeling shows that the influence
of viscoelasticity on helical propulsion is controlled by a snowman-like
effect, previously reported for dumbbell swimmers, wherein the front-back
asymmetry of the swimmer leads to a non-Newtonian elastic force that can either
favor or hinder locomotion.
|
[{'version': 'v1', 'created': 'Wed, 2 Dec 2020 22:42:04 GMT'}]
|
2021-05-05
|
[array(['Angeles', 'V.', ''], dtype=object)
array(['Godinez', 'F. A.', ''], dtype=object)
array(['Puente-Velazquez', 'J. A.', ''], dtype=object)
array(['Mendez', 'R.', ''], dtype=object)
array(['Lauga', 'E.', ''], dtype=object)
array(['Zenit', 'R.', ''], dtype=object)]
|
5,054 |
1506.06813
|
Farhad Shahrokhi
|
Farhad Shahrokhi
|
Bounds for the Clique Cover Width of Factors of the Apex Graph of the
Planar Grid
| null |
Congressus Numerantium 224 (2015), 213-220
| null | null |
cs.DM math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The {\it clique cover width} of $G$, denoted by $ccw(G)$, is the minimum
value of the bandwidth of all graphs that are obtained by contracting the
cliques in a clique cover of $G$ into a single vertex. For $i=1,2,...,d,$ let
$G_i$ be a graph with $V(G_i)=V$, and let $G$ be a graph with $V(G)=V$ and
$E(G)=\cap_{i=1}^d(G_i)$, then we write $G=\cap_{i=1}^dG_i$ and call each
$G_i,i=1,2,...,d$ a factor of $G$. We are interested in the case where $G_1$ is
chordal, and $ccw(G_i),i=2,3...,d$ for each factor $G_i$ is "small". Here we
show a negative result. Specifically, let ${\hat G}(k,n)$ be the graph obtained
by joining a set of $k$ apex vertices of degree $n^2$ to all vertices of an
$n\times n$ grid, and then adding some possible edges among these $k$ vertices.
We prove that if ${\hat G}(k,n)=\cap_{i=1}^dG_i$, with $G_1$ being chordal,
then, $max_{2\le i\le d}\{ccw(G_i)\}\ge {n^{1\over d-1}\over 2.{(2c)}^{1\over
{d-1}}}$, where $c$ is a constant. Furthermore, for $d=2$, we construct a
chordal graph $G_1$ and a graph $G_2$ with $ccw(G_2)\le {n\over 2}+k$ so that
${\hat G}(k,n)=G_1\cap G_2$. Finally, let ${\hat G}$ be the clique sum graph of
${\hat G}(k_i, n_i), i=1,2,...t$, where the underlying grid is $n_i\times n_i$
and the sum is taken at apex vertices. Then, we show ${\hat G}=G_1\cap G_2$,
where, $G_1$ is chordal and $ccw(G_2)\le \sum_{i=1}^t(n_i+k_i)$. The
implications and applications of the results are discussed, including
addressing a recent question of David Wood.
|
[{'version': 'v1', 'created': 'Mon, 22 Jun 2015 22:57:48 GMT'}
{'version': 'v2', 'created': 'Wed, 24 Jun 2015 02:56:19 GMT'}
{'version': 'v3', 'created': 'Sun, 28 Jun 2015 21:17:51 GMT'}
{'version': 'v4', 'created': 'Wed, 17 Feb 2016 02:11:39 GMT'}]
|
2016-02-18
|
[array(['Shahrokhi', 'Farhad', ''], dtype=object)]
|
5,055 |
1801.04696
|
Thomas Ridremont
|
C\'edric Bentz (CEDRIC), Marie-Christine Costa (OC), Pierre-Louis
Poirion (CEDRIC), Thomas Ridremont
|
Robust capacitated trees and networks with uniform demands
| null | null | null | null |
math.OC cs.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We are interested in the design of robust (or resilient) capacitated rooted
Steiner networks in case of terminals with uniform demands. Formally, we are
given a graph, capacity and cost functions on the edges, a root, a subset of
nodes called terminals, and a bound k on the number of edge failures. We first
study the problem where k = 1 and the network that we want to design must be a
tree covering the root and the terminals: we give complexity results and
propose models to optimize both the cost of the tree and the number of
terminals disconnected from the root in the worst case of an edge failure,
while respecting the capacity constraints on the edges. Second, we consider the
problem of computing a minimum-cost survivable network, i.e., a network that
covers the root and terminals even after the removal of any k edges, while
still respecting the capacity constraints on the edges. We also consider the
possibility of protecting a given number of edges. We propose three different
formulations: a cut-set based formulation, a flow based one, and a bilevel one
(with an attacker and a defender). We propose algorithms to solve each
formulation and compare their efficiency.
|
[{'version': 'v1', 'created': 'Mon, 15 Jan 2018 08:22:13 GMT'}]
|
2018-01-16
|
[array(['Bentz', 'Cédric', '', 'CEDRIC'], dtype=object)
array(['Costa', 'Marie-Christine', '', 'OC'], dtype=object)
array(['Poirion', 'Pierre-Louis', '', 'CEDRIC'], dtype=object)
array(['Ridremont', 'Thomas', ''], dtype=object)]
|
5,056 |
cond-mat/0406721
|
Eric Vincent
|
V. Dupuis, F. Bert, J.-P. Bouchaud, J. Hammann, F. Ladieu, D. Parker
and E. Vincent
|
Aging, rejuvenation and memory phenomena in spin glasses
|
submitted for the Proceedings of Stat Phys 22, Bangalore (India)
|
Pramana Journal of Physics 64, 1109-1119 (2005)
|
10.1007/BF02704172
| null |
cond-mat.dis-nn
| null |
In this paper, we review several important features of the out-of-equilibrium
dynamics of spin glasses. Starting with the simplest experiments, we discuss
the scaling laws used to describe the isothermal aging observed in spin glasses
after a quench down to the low temperature phase. We report in particular new
results on the sub-aging behaviour of spin glasses. We then discuss the
rejuvenation and memory effects observed when a spin glass is submitted to
temperature variations during aging, from the point of view of both energy
landscape pictures and of real space pictures. We highlight the fact that both
approaches point out the necessity of hierarchical processes involved in aging.
Finally, we report an investigation of the effect of small temperature
variations on aging in spin glass samples with various anisotropies which
indicates that this hierarchy depends on the spin anisotropy.
|
[{'version': 'v1', 'created': 'Tue, 29 Jun 2004 16:43:26 GMT'}
{'version': 'v2', 'created': 'Fri, 22 Oct 2004 10:41:19 GMT'}]
|
2009-11-10
|
[array(['Dupuis', 'V.', ''], dtype=object)
array(['Bert', 'F.', ''], dtype=object)
array(['Bouchaud', 'J. -P.', ''], dtype=object)
array(['Hammann', 'J.', ''], dtype=object)
array(['Ladieu', 'F.', ''], dtype=object)
array(['Parker', 'D.', ''], dtype=object)
array(['Vincent', 'E.', ''], dtype=object)]
|
5,057 |
1005.4856
|
Zhijun Xu
|
Zhijun Xu, Jinsheng Wen, Guangyong Xu, Qing Jie, Zhiwei Lin, Qiang Li,
Songxue Chi, D. K. Singh, Genda Gu, and J. M. Tranquada
|
Disappearance of static magnetic order and evolution of spin
fluctuations in Fe$_{1+\delta}$Se$_{x}$Te$_{1-x}$
|
6 pages, 5 figures, 1 table
|
Phys. Rev. B 82, 104525 (2010)
|
10.1103/PhysRevB.82.104525
| null |
cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report neutron scattering studies on static magnetic orders and spin
excitations in the Fe-based chalcogenide system
Fe$_{1+\delta}$Se$_{x}$Te$_{1-x}$ with different Fe and Se compositions.
Short-range static magnetic order with the "bicollinear" spin configuration is
found in all non-superconducting samples, with strong low-energy magnetic
excitations near the $(0.5,0)$ in-plane wave-vector (using the two-Fe unit
cell) for Se doping up to 45%. When the static order disappears and bulk
superconductivity emerges, the spectral weight of the magnetic excitations
shifts to the region of reciprocal space near the in-plane wave-vector
$(0.5,0.5)$, corresponding to the "collinear" spin configuration. Our results
suggest that spin fluctuations associated with the collinear magnetic structure
appear to be universal in all Fe-based superconductors, and there is a strong
correlation between superconductivity and the character of the magnetic
order/fluctuations in
|
[{'version': 'v1', 'created': 'Wed, 26 May 2010 15:58:10 GMT'}]
|
2010-11-10
|
[array(['Xu', 'Zhijun', ''], dtype=object)
array(['Wen', 'Jinsheng', ''], dtype=object)
array(['Xu', 'Guangyong', ''], dtype=object)
array(['Jie', 'Qing', ''], dtype=object)
array(['Lin', 'Zhiwei', ''], dtype=object)
array(['Li', 'Qiang', ''], dtype=object)
array(['Chi', 'Songxue', ''], dtype=object)
array(['Singh', 'D. K.', ''], dtype=object)
array(['Gu', 'Genda', ''], dtype=object)
array(['Tranquada', 'J. M.', ''], dtype=object)]
|
5,058 |
1401.1135
|
Radhika D
|
D Radhika, M C Ramadevi and S Seetha
|
RXTE observations and state transition in MAXI J1836-194
|
Submitted to ApJ
| null | null | null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the results of analysis of the X-ray transient source MAXI
J1836-194 during its outburst in August 2011. MAXI GSC detected the source on
30th August 2011, when it started rising from the quiescence. We have studied
the source using the observations of RXTE. In this paper, we study the temporal
and spectral evolution of the source during the outburst. Spectral analysis
shows that the source exhibits state transition to Hard Intermediate
state(HIMS) and decays back to a Low/Hard state. The temporal analysis
indicates the presence of QPOs during the hard intermediate state. We also
observe correlation between the evolution of break frequency with respect to
the spectral characteristics. We conclude that this is probably the second
source after H 1743-322 which exhibits transition to HIMS but does not reach
soft spectral state.
|
[{'version': 'v1', 'created': 'Mon, 6 Jan 2014 16:49:45 GMT'}]
|
2014-01-07
|
[array(['Radhika', 'D', ''], dtype=object)
array(['Ramadevi', 'M C', ''], dtype=object)
array(['Seetha', 'S', ''], dtype=object)]
|
5,059 |
0911.1899
|
Jan Conrad Baggesen
|
Jan Conrad Baggesen and Lars Bojer Madsen
|
Polarization effects in attosecond photoelectron spectroscopy
|
4 pages, 3 figures
| null |
10.1103/PhysRevLett.104.043602
| null |
physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the influence of polarization effects in streaking by combined atto-
and femtosecond pulses. The polarization-induced terms alter the streaking
spectrum. The normal streaking spectrum, which maps to the vector potential of
the femtosecond pulse, is modified by a contribution following the field
instead. We show that polarization effects may lead to an apparent temporal
shift, that needs to be properly accounted for in the analysis. The effect may
be isolated and studied by angle-resolved photoelectron spectroscopy from
oriented polar molecules. We also show that polarization effects will lead to
an apparent temporal shift of 50 as between photoelectrons from a 2p and 1s
state in atomic hydrogen.
|
[{'version': 'v1', 'created': 'Tue, 10 Nov 2009 14:19:25 GMT'}]
|
2015-05-14
|
[array(['Baggesen', 'Jan Conrad', ''], dtype=object)
array(['Madsen', 'Lars Bojer', ''], dtype=object)]
|
5,060 |
1904.12150
|
Xingzhi Zhan
|
Pu Qiao and Xingzhi Zhan
|
Relation between the number of leaves of a tree and its diameter
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $L(n,d)$ denote the minimum possible number of leaves in a tree of order
$n$ and diameter $d.$ In 1975 Lesniak gave the lower bound
$B(n,d)=\lceil 2(n-1)/d\rceil$ for $L(n,d).$ When $d$ is even,
$B(n,d)=L(n,d).$ But when $d$ is odd, $B(n,d)$ is smaller than $L(n,d)$ in
general.
For example, $B(21,3)=14$ while $L(21,3)=19.$ We prove that for $d\ge 2,$
$ L(n,d)=\left\lceil \frac{2(n-1)}{d}\right\rceil$ if $d$ is even and
$L(n,d)=\left\lceil \frac{2(n-2)}{d-1}\right\rceil$ if $d$ is odd.
The converse problem is also considered. Let $D(n,f)$ be the minimum possible
diameter of a tree of order $n$ with exactly $f$ leaves.
We prove that $D(n,f)=2$ if $n=f+1,$ $D(n,f)=2k+1$ if $n=kf+2,$ and
$D(n,f)=2k+2$ if $kf+3\le n\le (k+1)f+1.$
|
[{'version': 'v1', 'created': 'Sat, 27 Apr 2019 11:52:14 GMT'}]
|
2019-04-30
|
[array(['Qiao', 'Pu', ''], dtype=object)
array(['Zhan', 'Xingzhi', ''], dtype=object)]
|
5,061 |
1903.09810
|
Thierry Horsin
|
T. Horsin and M.A. Jendoubi
|
An extension of a Liapunov approach to the stabilization of second order
coupled systems
| null | null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper deals with the convergence to 0 of the energy of the solutions of
a second order linear coupled system. In order to obtain the energy decay, we
exhibit a Liapunov function.
|
[{'version': 'v1', 'created': 'Sat, 23 Mar 2019 12:09:08 GMT'}]
|
2019-03-26
|
[array(['Horsin', 'T.', ''], dtype=object)
array(['Jendoubi', 'M. A.', ''], dtype=object)]
|
5,062 |
1712.05379
|
Friedrich Martin Schneider
|
Friedrich Martin Schneider
|
Equivariant concentration in topological groups
|
21 pages, no figures; v2 (taking referee report into account):
introduction extended, first part of Section 4 streamlined, typos corrected,
some remarks added
|
Geom. Topol. 23 (2019) 925-956
|
10.2140/gt.2019.23.925
| null |
math.FA math.GR math.MG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that, if $G$ is a second-countable topological group with a
compatible right-invariant metric $d$ and $(\mu_{n})_{n \in \mathbb{N}}$ is a
sequence of compactly supported Borel probability measures on $G$ converging to
invariance with respect to the mass transportation distance over $d$ and such
that $\left(\mathrm{spt} \, \mu_{n}, d\!\!\upharpoonright_{\mathrm{spt} \,
\mu_{n}}, \mu_{n}\!\!\upharpoonright_{\mathrm{spt} \, \mu_{n}}\right)_{n \in
\mathbb{N}}$ concentrates to a fully supported, compact $mm$-space
$\left(X,d_{X},\mu_{X}\right)$, then $X$ is homeomorphic to a $G$-invariant
subspace of the Samuel compactification of $G$. In particular, this confirms a
conjecture by Pestov and generalizes a well-known result by Gromov and Milman
on the extreme amenability of topological groups. Furthermore, we exhibit a
connection between the average orbit diameter of a metrizable flow of an
arbitrary amenable topological group and the limit of Gromov's observable
diameters along any net of Borel probability measures UEB-converging to
invariance over the group.
|
[{'version': 'v1', 'created': 'Thu, 14 Dec 2017 18:21:51 GMT'}
{'version': 'v2', 'created': 'Mon, 14 May 2018 08:26:05 GMT'}]
|
2019-04-17
|
[array(['Schneider', 'Friedrich Martin', ''], dtype=object)]
|
5,063 |
2305.19454
|
Lu Yin
|
Lu Yin, Gen Li, Meng Fang, Li Shen, Tianjin Huang, Zhangyang Wang,
Vlado Menkovski, Xiaolong Ma, Mykola Pechenizkiy, Shiwei Liu
|
Dynamic Sparsity Is Channel-Level Sparsity Learner
| null | null | null | null |
cs.LG cs.AI cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Sparse training has received an upsurging interest in machine learning due to
its tantalizing saving potential for the entire training process as well as
inference. Dynamic sparse training (DST), as a leading sparse training
approach, can train deep neural networks at high sparsity from scratch to match
the performance of their dense counterparts. However, most if not all DST prior
arts demonstrate their effectiveness on unstructured sparsity with highly
irregular sparse patterns, which receives limited support in common hardware.
This limitation hinders the usage of DST in practice. In this paper, we propose
Channel-aware dynamic sparse (Chase), which for the first time seamlessly
translates the promise of unstructured dynamic sparsity to GPU-friendly
channel-level sparsity (not fine-grained N:M or group sparsity) during one
end-to-end training process, without any ad-hoc operations. The resulting small
sparse networks can be directly accelerated by commodity hardware, without
using any particularly sparsity-aware hardware accelerators. This appealing
outcome is partially motivated by a hidden phenomenon of dynamic sparsity:
off-the-shelf unstructured DST implicitly involves biased parameter
reallocation across channels, with a large fraction of channels (up to 60\%)
being sparser than others. By progressively identifying and removing these
channels during training, our approach translates unstructured sparsity to
channel-wise sparsity. Our experimental results demonstrate that Chase achieves
1.7 X inference throughput speedup on common GPU devices without compromising
accuracy with ResNet-50 on ImageNet. We release our codes in
https://github.com/luuyin/chase.
|
[{'version': 'v1', 'created': 'Tue, 30 May 2023 23:33:45 GMT'}]
|
2023-06-01
|
[array(['Yin', 'Lu', ''], dtype=object)
array(['Li', 'Gen', ''], dtype=object)
array(['Fang', 'Meng', ''], dtype=object)
array(['Shen', 'Li', ''], dtype=object)
array(['Huang', 'Tianjin', ''], dtype=object)
array(['Wang', 'Zhangyang', ''], dtype=object)
array(['Menkovski', 'Vlado', ''], dtype=object)
array(['Ma', 'Xiaolong', ''], dtype=object)
array(['Pechenizkiy', 'Mykola', ''], dtype=object)
array(['Liu', 'Shiwei', ''], dtype=object)]
|
5,064 |
physics/0511145
|
Gordon Chalmers Dr
|
Gordon Chalmers
|
Data Compression with Prime Numbers
|
4 pages, LaTeX
| null | null | null |
physics.gen-ph
| null |
A compression algorithm is presented that uses the set of prime numbers.
Sequences of numbers are correlated with the prime numbers, and labeled with
the integers. The algorithm can be iterated on data sets, generating factors of
doubles on the compression.
|
[{'version': 'v1', 'created': 'Wed, 16 Nov 2005 20:10:45 GMT'}]
|
2007-05-23
|
[array(['Chalmers', 'Gordon', ''], dtype=object)]
|
5,065 |
2206.14821
|
Petar Simidzija
|
Stefano Antonini, Petar Simidzija, Brian Swingle, Mark Van Raamsdonk
|
Accelerating cosmology from a holographic wormhole
|
5 pages, 3 figures. Updated to match published version
|
Phys. Rev. Lett. 130, 221601 (2023)
|
10.1103/PhysRevLett.130.221601
| null |
hep-th astro-ph.CO hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We consider cosmological models in which the cosmology is related via
analytic continuation to a Euclidean asymptotically AdS planar wormhole
geometry defined holographically via a pair of three-dimensional Euclidean
CFTs. We argue that these models can generically give rise to an accelerating
phase for the cosmology due to the potential energy of scalar fields associated
with relevant scalar operators in the CFT. We explain how cosmological
observables are related to observables in the wormhole spacetime and argue that
this leads to a novel perspective on naturalness puzzles in cosmology.
|
[{'version': 'v1', 'created': 'Wed, 29 Jun 2022 18:00:01 GMT'}
{'version': 'v2', 'created': 'Mon, 26 Jun 2023 19:00:46 GMT'}]
|
2023-06-28
|
[array(['Antonini', 'Stefano', ''], dtype=object)
array(['Simidzija', 'Petar', ''], dtype=object)
array(['Swingle', 'Brian', ''], dtype=object)
array(['Van Raamsdonk', 'Mark', ''], dtype=object)]
|
5,066 |
cond-mat/0510010
|
Junji Haruyama
|
J.Mizubayashi, J.Haruyama, I.Takesue, T.Okazaki, H.Shinohara,
N.Harada, Y.Awano
|
Atomic-like behaviors and orbital-related Tomonaga-Luttinger liquid in
peapod quantum dots
| null | null | null | null |
cond-mat.mes-hall cond-mat.str-el
| null |
We report encapsulated C60 molecules on electron transport in carbon-nanotube
peapod quantum dots. We find atomic-like behaviors with doubly degenerate
electronic levels, which exist only around ground states, by single electron
spectroscopy measured at low back-gate voltages (Vbg's). Correlation with
presence of nearly free electrons (NFEs) unique to the peapods is discussed. In
contrast, we find that encapsulated C60 molecules do not affect to single
charging effect. Moreover, we find anomalously high values of powers observed
in power laws in conductance versus energy relationships, which are strongly
associated with the doubly degenerate levels. It is revealed that the powers
originate from Tomonaga-Luttinger liquids via the occupied doubly degenerate
levels. Encapsulated C60 molecules do not eliminate a ballistic charge
transport in single-walled nanotubes.
|
[{'version': 'v1', 'created': 'Sat, 1 Oct 2005 09:45:54 GMT'}
{'version': 'v2', 'created': 'Tue, 29 Nov 2005 11:02:03 GMT'}]
|
2007-05-23
|
[array(['Mizubayashi', 'J.', ''], dtype=object)
array(['Haruyama', 'J.', ''], dtype=object)
array(['Takesue', 'I.', ''], dtype=object)
array(['Okazaki', 'T.', ''], dtype=object)
array(['Shinohara', 'H.', ''], dtype=object)
array(['Harada', 'N.', ''], dtype=object)
array(['Awano', 'Y.', ''], dtype=object)]
|
5,067 |
math/0011137
|
Javier Fernandez
|
Eduardo Cattani and Javier Fernandez
|
Asymptotic Hodge theory and quantum products
|
References and comments added. To appear in "Advances in Algebraic
Geometry Motivated by Physics", Ed. E. Previatto, Contemporary Mathematics
|
Contemporary Mathematics, 276 (2001), p. 115-136.
| null | null |
math.AG
| null |
Assuming suitable convergence properties for the Gromov-Witten potential of a
Calabi-Yau manifold $X$ one may construct a polarized variation of Hodge
structure over the complexified K\"ahler cone of $X$. In this paper we show
that, in the case of fourfolds, there is a correspondence between ``quantum
potentials'' and polarized variations of Hodge structures that degenerate to a
maximally unipotent boundary point. Under this correspondence, the WDVV
equations are seen to be equivalent to the Griffiths' trasversality property of
a variation of Hodge structure.
|
[{'version': 'v1', 'created': 'Sun, 19 Nov 2000 04:30:08 GMT'}
{'version': 'v2', 'created': 'Sun, 26 Nov 2000 21:55:59 GMT'}]
|
2007-05-23
|
[array(['Cattani', 'Eduardo', ''], dtype=object)
array(['Fernandez', 'Javier', ''], dtype=object)]
|
5,068 |
1508.05128
|
Ondrej Kuzelka
|
Gustav Sourek, Vojtech Aschenbrenner, Filip Zelezny, Ondrej Kuzelka
|
Lifted Relational Neural Networks
|
Expanded section on weight learning, added explanation of
relationship to convolutional neural networks
| null | null | null |
cs.AI cs.LG cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a method combining relational-logic representations with neural
network learning. A general lifted architecture, possibly reflecting some
background domain knowledge, is described through relational rules which may be
handcrafted or learned. The relational rule-set serves as a template for
unfolding possibly deep neural networks whose structures also reflect the
structures of given training or testing relational examples. Different networks
corresponding to different examples share their weights, which co-evolve during
training by stochastic gradient descent algorithm. The framework allows for
hierarchical relational modeling constructs and learning of latent relational
concepts through shared hidden layers weights corresponding to the rules.
Discovery of notable relational concepts and experiments on 78 relational
learning benchmarks demonstrate favorable performance of the method.
|
[{'version': 'v1', 'created': 'Thu, 20 Aug 2015 21:18:25 GMT'}
{'version': 'v2', 'created': 'Tue, 13 Oct 2015 12:55:45 GMT'}]
|
2015-10-14
|
[array(['Sourek', 'Gustav', ''], dtype=object)
array(['Aschenbrenner', 'Vojtech', ''], dtype=object)
array(['Zelezny', 'Filip', ''], dtype=object)
array(['Kuzelka', 'Ondrej', ''], dtype=object)]
|
5,069 |
hep-ph/9610324
|
Xin He Meng
|
John McDonald (Lancaster University, UK)
|
Nucleosynthesis bounds on small Dirac neutrino masses due to chiral
symmetry breaking
|
Latex 18 pages, 3 figures. Additional discussion of nucleosynthesis.
No change in conclusions
| null | null |
Lancaster-TH/9616
|
hep-ph
| null |
We consider nucleosynthesis constraints on models which use chiral symmetry
breaking as a basis for understanding very small Dirac neutrino masses. We show
that present big-bang nucleosynthesis constraints impose a well-defined upper
bound of 0.1eV on the neutrino masses. This bound may become several orders of
magnitude more stringent in the future as our understanding of the
observational constraints on nucleosynthesis improves. We discuss the
phenomenological implications for neutrino dark matter, the solar neutrino
problem and the atmospheric neutrino deficit.
|
[{'version': 'v1', 'created': 'Thu, 10 Oct 1996 23:53:37 GMT'}
{'version': 'v2', 'created': 'Tue, 19 Nov 1996 10:51:52 GMT'}]
|
2008-02-03
|
[array(['McDonald', 'John', '', 'Lancaster University, UK'], dtype=object)]
|
5,070 |
quant-ph/9806058
|
Pawel Horodecki
|
Pawel Horodecki, Michal Horodecki and Ryszard Horodecki
|
Bound entanglement can be activated
|
RevTeX, 4 pages
|
Phys.Rev.Lett. 82 (1999) 1056-1059
|
10.1103/PhysRevLett.82.1056
| null |
quant-ph
| null |
Bound entanglement is the noisy entanglement which cannot be distilled to a
singlet form. Thus it cannot be used alone for quantum communication purposes.
Here we show that, nevertheless, the bound entanglement can be, in a sense,
pumped into single pair of free entangled particles. It allows for
teleportation via the pair with the fidelity impossible to achieve without
support of bound entanglement. The result also suggests that the distillable
entanglement may be not additive.
|
[{'version': 'v1', 'created': 'Wed, 17 Jun 1998 20:15:46 GMT'}]
|
2009-10-31
|
[array(['Horodecki', 'Pawel', ''], dtype=object)
array(['Horodecki', 'Michal', ''], dtype=object)
array(['Horodecki', 'Ryszard', ''], dtype=object)]
|
5,071 |
2302.01399
|
Md Masudur Rahman
|
Md Masudur Rahman and Yexiang Xue
|
Accelerating Policy Gradient by Estimating Value Function from Prior
Computation in Deep Reinforcement Learning
| null | null | null | null |
cs.LG cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper investigates the use of prior computation to estimate the value
function to improve sample efficiency in on-policy policy gradient methods in
reinforcement learning. Our approach is to estimate the value function from
prior computations, such as from the Q-network learned in DQN or the value
function trained for different but related environments. In particular, we
learn a new value function for the target task while combining it with a value
estimate from the prior computation. Finally, the resulting value function is
used as a baseline in the policy gradient method. This use of a baseline has
the theoretical property of reducing variance in gradient computation and thus
improving sample efficiency. The experiments show the successful use of prior
value estimates in various settings and improved sample efficiency in several
tasks.
|
[{'version': 'v1', 'created': 'Thu, 2 Feb 2023 20:23:22 GMT'}]
|
2023-02-06
|
[array(['Rahman', 'Md Masudur', ''], dtype=object)
array(['Xue', 'Yexiang', ''], dtype=object)]
|
5,072 |
1012.3245
|
Daniele Fargion
|
Daniele Fargion and Daniele D'Armiento, Paolo Desiati, Paolo Paggi
|
Beaming neutrino and antineutrinos across the Earth to disentangle
neutrino mixing parameters
|
18 pages, 23 figures; 8 Figures had minor changes: Double Fig4-5, Fig
6-7-8-9; 3 Figures are New: Final accepted version in Ap J (2012) with an
addendum of a Cabibbo photo-art composition
|
The Astrophysical Journal Volume 758 Number 1, Daniele Fargion et
al. 2012 ApJ 758 3
|
10.1088/0004-637X/758/1/3
| null |
hep-ph astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A MINOS result seemed to hint a different anti-neutrino mass splitting and
mixing angle with respect to the neutrino ones, offering a hint for a CPT
violation in lepton sector. However more recent MINOS data reduced the
neutrino-antineutrino differences leading to a narrow discrepancy almost
compatible with no CPT violation, hard to be disentangled. Moreover last a few
years of OPERA activity on tau appearance is still un-probed (one unique
event). Both flavor muon-tau mixing, tau appearance and eventual CPT violation
disentanglement need more tools to be enhanced. Atmospheric muon neutrino
spectra and anisotropy in Deep Core at ten-tens GeV (yet unpublished) may test
the muon-tau conversion but they can hardly reveal such last tiny MINOS CPT
asymmetry. We show how the longest baseline neutrino oscillation available,
crossing most of the Earth diameter, within an OPERA-like experiment from CERN
(or FERMILAB) to ICECUBE-Deep Core neutrino detector at 21 GeV energy, may at
best disentangle even last tiny CPT violation (within 6 sigma a year) while
testing at highest rate tau-antitau appearance. We propose the muon neutrino
disappearance or (for any CPT violation) the partial anti-muon appearance at
the longest distances. Such a tuned detection experiment may lead to a clear
and strong signature of tau or anti-tau generation (even within its neutral
current noise background events): nearly one antitau or two tau a day. The tau
appearance signal is above (or within) 10 sigma a year, even for 1% OPERA-like
experiment. Peculiar configurations for theta_13 angle test and hierarchy
neutrino mass test may also be addressed by a Deep Core-PINGU array detector
observing electron neutrino shower at 6 GeV neutrino energy windows.
|
[{'version': 'v1', 'created': 'Wed, 15 Dec 2010 08:28:38 GMT'}
{'version': 'v2', 'created': 'Fri, 4 May 2012 16:10:55 GMT'}
{'version': 'v3', 'created': 'Fri, 29 Jun 2012 10:25:35 GMT'}
{'version': 'v4', 'created': 'Tue, 3 Jul 2012 14:25:17 GMT'}
{'version': 'v5', 'created': 'Wed, 8 Aug 2012 17:56:27 GMT'}]
|
2012-09-21
|
[array(['Fargion', 'Daniele', ''], dtype=object)
array(["D'Armiento", 'Daniele', ''], dtype=object)
array(['Desiati', 'Paolo', ''], dtype=object)
array(['Paggi', 'Paolo', ''], dtype=object)]
|
5,073 |
cond-mat/0103105
|
Cynthia J. Olson
|
C. Reichhardt and C.J. Olson
|
Dynamic Ordering and Transverse Depinning of a Driven Elastic String in
a Disordered Media
|
4 pages, 4 postscript figures
|
Phys. Rev. B 65, 094301 (2002)
|
10.1103/PhysRevB.65.094301
| null |
cond-mat
| null |
We examine the dynamics of an elastic string interacting with quenched
disorder driven perpendicular and parallel to the string. We show that the
string is the most disordered at the depinning transition but with increasing
drive partial ordering is regained. For low drives the noise power is high and
we observe a 1/f^2 noise signature crossing over to a white noise character
with low power at higher drives. For the parallel driven moving string there is
a finite transverse critical depinning force with the depinning transition
occuring by the formation of running kinks.
|
[{'version': 'v1', 'created': 'Mon, 5 Mar 2001 21:13:45 GMT'}]
|
2009-11-07
|
[array(['Reichhardt', 'C.', ''], dtype=object)
array(['Olson', 'C. J.', ''], dtype=object)]
|
5,074 |
1905.12515
|
Mingyang Lu
|
Mingyang Lu, Wenqian Zhu, Liyuan Yin, Anthony J. Peyton, Wuliang Yin,
Zhigang Qu
|
Reducing the Lift-Off Effect on Permeability Measurement for Magnetic
Plates From Multifrequency Induction Data
| null | null |
10.1109/TIM.2017.2728338
| null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Liftoff variation causes errors in eddy current measurement of nonmagnetic
plates as well as magnetic plates. For nonmagnetic plates, previous work has
been carried out to address the issue. In this paper, we follow a similar
strategy, but try to reduce the lift-off effect on another index, zerocrossing
frequency for magnetic plates. This modified index, termed as the compensated
zero-crossing frequency, can be obtained from the measured multifrequency
inductance spectral data using the algorithm we developed in this paper. Since
the zero-crossing frequency can be compensated, the permeability of magnetic
plates can finally be predicted by deriving the relation between the
permeability and zero-crossing frequency from Dodd and Deeds method. We have
derived the method through mathematical manipulation and verified it by both
simulation and experimental data. The permeability error caused by liftoff can
be reduced within 7.5%.
|
[{'version': 'v1', 'created': 'Tue, 28 May 2019 10:35:02 GMT'}]
|
2019-05-30
|
[array(['Lu', 'Mingyang', ''], dtype=object)
array(['Zhu', 'Wenqian', ''], dtype=object)
array(['Yin', 'Liyuan', ''], dtype=object)
array(['Peyton', 'Anthony J.', ''], dtype=object)
array(['Yin', 'Wuliang', ''], dtype=object)
array(['Qu', 'Zhigang', ''], dtype=object)]
|
5,075 |
1205.4587
|
Dmitri Melikhov
|
Wolfgang Lucha and Dmitri Melikhov
|
The $\gamma^* \gamma^*\to\eta_c$ transition form factor
|
9 pages
|
Phys.Rev.D86:016001,2012
|
10.1103/PhysRevD.86.016001
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the $\gamma^* \gamma^*\to\eta_c$ transition form factor,
$F_{\eta_c\gamma\gamma}(Q_1^2,Q_2^2),$ with the local-duality (LD) version of
QCD sum rules. We analyse the extraction of this quantity from two different
correlators, $<PVV>$ and $<AVV>,$ with $P,$ $A,$ and $V$ being the
pseudoscalar, axial-vector, and vector currents, respectively. The QCD
factorization theorem for $F_{\eta_c\gamma\gamma}(Q_1^2,Q_2^2)$ allows us to
fix the effective continuum thresholds for the $<PVV>$ and $<AVV>$ correlators
at large values of $Q^2=Q_2^2$ and some fixed value of $\beta\equiv
Q_1^2/Q_2^2$. We give arguments that, in the region $Q^2\ge10$--$15 GeV^2$, the
effective threshold should be close to its asymptotic value such that the LD
sum rule provides reliable predictions for
$F_{\eta_c\gamma\gamma}(Q_1^2,Q_2^2).$ We show that, for the experimentally
relevant kinematics of one real and one virtual photon, the result of the LD
sum rule for $F_{\eta_c\gamma}(Q^2)\equiv F_{\eta_c\gamma\gamma}(0,Q^2)$ may be
well approximated by the simple monopole formula
$F_{\eta_c\gamma}(Q^2)={2e_c^2N_cf_P}(M_V^2+Q^2)^{-1},$ where $f_P$ is the
$\eta_c$ decay constant, $e^2_c$ is the $c$-quark charge, and the parameter
$M_V$ lies in the mass range of the lowest $\bar cc$ vector states.
|
[{'version': 'v1', 'created': 'Mon, 21 May 2012 13:02:55 GMT'}]
|
2012-07-09
|
[array(['Lucha', 'Wolfgang', ''], dtype=object)
array(['Melikhov', 'Dmitri', ''], dtype=object)]
|
5,076 |
cond-mat/0404560
|
Docteur David Guery-Odelin
|
J. M. Vogels, T. Lahaye, C. Roos, J. Dalibard, D. Guery-Odelin
|
How to reach the collisional regime on a magnetically guided atomic beam
| null | null | null | null |
cond-mat.other
| null |
In this paper, we report our progress towards the realization of a continuous
guided atomic beam in the degenerate regime. So far, we have coupled into a
magnetic guide a flux of a few $10^{8}$ atoms/s at 60 cm/s with a propagation
in the guide over more than 2 meters. At this stage, the collision rate is not
high enough to start an efficient forced evaporative cooling. Here we describe
a new approach to reach the collisional regime. It is based on a pulsed feeding
of the magnetic guide at a high repetition rate. The overlap of the packets of
atoms occurs in the guide and leads to a continuous guided beam. We discuss
different ways to increase the collision rate of this beam while keeping the
phase space density constant by shaping the external potential.
|
[{'version': 'v1', 'created': 'Fri, 23 Apr 2004 07:38:47 GMT'}]
|
2007-05-23
|
[array(['Vogels', 'J. M.', ''], dtype=object)
array(['Lahaye', 'T.', ''], dtype=object)
array(['Roos', 'C.', ''], dtype=object)
array(['Dalibard', 'J.', ''], dtype=object)
array(['Guery-Odelin', 'D.', ''], dtype=object)]
|
5,077 |
2007.09767
|
Pawel Czachorowski PhD
|
Pawe{\l} Czachorowski, Micha{\l} Przybytek, Micha{\l} Lesiuk, Mariusz
Puchalski, Bogumi{\l} Jeziorski
|
Second virial coefficients for helium-4 and helium-3 from accurate
relativistic interaction potential
|
13 pages, 2 figures, 7 suplemental files; includes changes introduced
during the peer review and the proofreading process; published in Phys. Rev.
A (copyrighted by American Physical Society):
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.102.042810
|
Phys. Rev. A 102, 042810 (2020)
|
10.1103/PhysRevA.102.042810
| null |
physics.chem-ph physics.comp-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The second virial coefficient and the second acoustic virial coefficient for
helium-4 and helium-3 are computed for a wide range of temperatures (0.5 -
1000K) using a highly accurate nonrelativistic interaction potential [M.
Przybytek et al., Phys. Rev. Lett. 119, 123401 (2017)] and recalculated
relativistic and quantum-electrodynamic components. The effects of the
long-range retardation and of the nonadiabatic coupling of the nuclear and
electronic motion are also taken into account. The results of our calculations
represent at least fivefold improvement in accuracy compared to the previous ab
initio work. The computed virial coefficients agree well with the most accurate
recent measurements but have significantly smaller uncertainty.
|
[{'version': 'v1', 'created': 'Sun, 19 Jul 2020 20:05:46 GMT'}
{'version': 'v2', 'created': 'Mon, 12 Oct 2020 16:41:13 GMT'}]
|
2020-10-13
|
[array(['Czachorowski', 'Paweł', ''], dtype=object)
array(['Przybytek', 'Michał', ''], dtype=object)
array(['Lesiuk', 'Michał', ''], dtype=object)
array(['Puchalski', 'Mariusz', ''], dtype=object)
array(['Jeziorski', 'Bogumił', ''], dtype=object)]
|
5,078 |
2110.11624
|
Ting-Yao Hsu
|
Ting-Yao Hsu, C. Lee Giles, Ting-Hao 'Kenneth' Huang
|
SciCap: Generating Captions for Scientific Figures
|
To Appear in EMNLP 2021 Findings. The dataset is available at:
https://github.com/tingyaohsu/SciCap
| null | null | null |
cs.CL cs.AI cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Researchers use figures to communicate rich, complex information in
scientific papers. The captions of these figures are critical to conveying
effective messages. However, low-quality figure captions commonly occur in
scientific articles and may decrease understanding. In this paper, we propose
an end-to-end neural framework to automatically generate informative,
high-quality captions for scientific figures. To this end, we introduce SCICAP,
a large-scale figure-caption dataset based on computer science arXiv papers
published between 2010 and 2020. After pre-processing - including figure-type
classification, sub-figure identification, text normalization, and caption text
selection - SCICAP contained more than two million figures extracted from over
290,000 papers. We then established baseline models that caption graph plots,
the dominant (19.2%) figure type. The experimental results showed both
opportunities and steep challenges of generating captions for scientific
figures.
|
[{'version': 'v1', 'created': 'Fri, 22 Oct 2021 07:10:41 GMT'}
{'version': 'v2', 'created': 'Mon, 25 Oct 2021 04:37:30 GMT'}]
|
2021-10-26
|
[array(['Hsu', 'Ting-Yao', ''], dtype=object)
array(['Giles', 'C. Lee', ''], dtype=object)
array(['Huang', "Ting-Hao 'Kenneth'", ''], dtype=object)]
|
5,079 |
physics/0402063
|
Oleksandr Danylchenko
|
Spartak I. Kovalenko, Oleksandr G. Danylchenko, Vladimir N. Samovarov
|
Electron diffraction data on structural transformations in free clucters
of argon
|
The more detailed discussion of the obtained results will be
published in Fiz. Nizk. Temp. 30 (2004) [Low Temp. Phys. 30 (2004)]
| null | null | null |
physics.atm-clus
| null |
An electron diffraction technique is used to study the structure of clusters
formed in an isentropically expanding supersonic argon jet. The formation of
the hcp phase with increasing cluster size is reliably detected for the first
time. Observations are made for mean cluster sizes N in the range from 1x10^3
to 8x10^4 atoms/cluster. An analysis of the shape of the diffraction peaks is
carried out. It is found that in the range N <= 2x10^3 atoms/cluster, where the
clusters are icosahedral, the profiles of the diffraction peaks are well
approximated by a Lorentzian. For fcc clusters with N >= 3x10^3 atoms/cluster a
better approximation is the standard Gaussian function. In the case N >= 1x10^4
atoms/cluster one observes peaks of the hcp phase in addition to the fcc peaks.
The intensity of the hcp peaks increases with increasing cluster size, and for
N = 8x10^4 atoms/cluster, the (110), (101), (103), and (202) peaks,
characteristic only for the hcp phase, are clearly registered in addition to
the fcc peaks. A possible mechanism for the formation of the hcp structure in
Ar clusters is proposed.
|
[{'version': 'v1', 'created': 'Thu, 12 Feb 2004 13:29:47 GMT'}]
|
2007-05-23
|
[array(['Kovalenko', 'Spartak I.', ''], dtype=object)
array(['Danylchenko', 'Oleksandr G.', ''], dtype=object)
array(['Samovarov', 'Vladimir N.', ''], dtype=object)]
|
5,080 |
2108.07873
|
Marta Luszczak Mrs
|
Tolga Altinoluk, Marta Luszczak, Daniel Tapia Takaki
|
WG2 Summary: Small-x, Diffraction and Vector Mesons
|
10 pages, the session summary written by the conveners at the XXVIII
International Workshop on Deep-Inelastic Scattering and Related Subjects
(DIS2021), Stony Brook University, New York, USA, 12-16 April 2021
| null | null | null |
hep-ph hep-ex hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Here we briefly summarize the contributions to Working Group 2: Small-x,
Diffraction and Vector Mesons, at the DIS2021 Workshop.
|
[{'version': 'v1', 'created': 'Tue, 17 Aug 2021 20:59:15 GMT'}
{'version': 'v2', 'created': 'Thu, 17 Mar 2022 15:43:53 GMT'}]
|
2022-03-18
|
[array(['Altinoluk', 'Tolga', ''], dtype=object)
array(['Luszczak', 'Marta', ''], dtype=object)
array(['Takaki', 'Daniel Tapia', ''], dtype=object)]
|
5,081 |
1706.06998
|
Johannes Rauh
|
Johannes Rauh
|
Secret Sharing and Shared Information
|
9 pages, 1 figure. The material was presented at a Workshop on
information decompositions at FIAS, Frankfurt, in 12/2016. The revision
includes changes in the definition of combinations of secret sharing schemes.
Section 3 and Appendix now discusses in how far existing measures satisfy the
proposed properties. The concluding section is considerably revised
|
Entropy 2017, 19(11), 601
|
10.3390/e19110601
| null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Secret sharing is a cryptographic discipline in which the goal is to
distribute information about a secret over a set of participants in such a way
that only specific authorized combinations of participants together can
reconstruct the secret. Thus, secret sharing schemes are systems of variables
in which it is very clearly specified which subsets have information about the
secret. As such, they provide perfect model systems for information
decompositions. However, following this intuition too far leads to an
information decomposition with negative partial information terms, which are
difficult to interpret. One possible explanation is that the partial
information lattice proposed by Williams and Beer is incomplete and has to be
extended to incorporate terms corresponding to higher order redundancy. These
results put bounds on information decompositions that follow the partial
information framework, and they hint at where the partial information lattice
needs to be improved.
|
[{'version': 'v1', 'created': 'Wed, 21 Jun 2017 16:43:25 GMT'}
{'version': 'v2', 'created': 'Fri, 10 Nov 2017 16:02:06 GMT'}]
|
2017-11-13
|
[array(['Rauh', 'Johannes', ''], dtype=object)]
|
5,082 |
1702.06390
|
Baran Bacinoglu Tan
|
Baran Tan Bacinoglu, Elif Uysal-Biyikoglu, Can Emre Koksal
|
Finite Horizon Energy-Efficient Scheduling with Energy Harvesting
Transmitters over Fading Channels
|
A version of this paper has been submitted to IEEE Transactions on
Wireless Communications
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, energy-efficient transmission schemes achieving maximal
throughput over a finite time interval are studied in a problem setting
including energy harvests, data arrivals and channel variation. The goal is to
express the offline optimal policy in a way that facilitates a good online
solution. We express any throughput maximizing energy efficient offline
schedule (EE-TM-OFF) explicitly in terms of water levels. This allows per-slot
real-time evaluation of transmit power and rate decisions, using estimates of
the associated offline water levels. To compute the online power level, we
construct a stochastic dynamic program that incorporates the offline optimal
solution as a stochastic process. We introduce the "Immediate Fill" metric
which provides a lower bound on the efficiency of any online policy with
respect to the corresponding optimal offline solution. The online algorithms
obtained this way exhibit performance close to the offline optimal, not only in
the long run but also in short problem horizons, deeming them suitable for
practical implementations.
|
[{'version': 'v1', 'created': 'Tue, 21 Feb 2017 14:15:04 GMT'}]
|
2017-02-22
|
[array(['Bacinoglu', 'Baran Tan', ''], dtype=object)
array(['Uysal-Biyikoglu', 'Elif', ''], dtype=object)
array(['Koksal', 'Can Emre', ''], dtype=object)]
|
5,083 |
1712.07782
|
Juan Zhang
|
Juan Zhang, Changzheng Sun, Bing Xiong, Jian Wang, Zhibiao Hao, Lai
Wang, Yanjun Han, Hongtao Li, Yi Luo, Yi Xiao, Chuanqing Yu, Takuo Tanemura,
Yoshiaki Nakano, Shimao Li, Xinlun Cai, Siyuan Yu
|
Electrically Pumped Orbital Angular Momentum (OAM) Laser at Telecom
Wavelengths
|
9 pages, 5 figures
| null | null | null |
physics.optics physics.app-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Semiconductor lasers capable of generating a vortex beam with a specific
orbital angular momentum (OAM) order are highly attractive for applications
ranging from nanoparticle manipulation, imaging and microscopy to fibre and
quantum communications. In this work, an electrically pumped OAM laser
operating at telecom wavelengths is fabricated by monolithically integrating an
optical vortex emitter with a distributed feedback (DFB) laser on the same
InGaAsP/InP epitaxial wafer. A single-step dry etching process is adopted to
complete the OAM emitter, equipped with specially designed top gratings. The
vortex beam emitted by the integrated laser is captured, and its OAM mode
purity characterized. The electrically pumped OAM laser eliminates the external
laser required by silicon- or silicon-on-insulator (SOI)-based OAM emitters,
thus demonstrating great potential for applications in communication systems
and quantum domain.
|
[{'version': 'v1', 'created': 'Thu, 21 Dec 2017 03:36:22 GMT'}]
|
2017-12-22
|
[array(['Zhang', 'Juan', ''], dtype=object)
array(['Sun', 'Changzheng', ''], dtype=object)
array(['Xiong', 'Bing', ''], dtype=object)
array(['Wang', 'Jian', ''], dtype=object)
array(['Hao', 'Zhibiao', ''], dtype=object)
array(['Wang', 'Lai', ''], dtype=object)
array(['Han', 'Yanjun', ''], dtype=object)
array(['Li', 'Hongtao', ''], dtype=object)
array(['Luo', 'Yi', ''], dtype=object)
array(['Xiao', 'Yi', ''], dtype=object)
array(['Yu', 'Chuanqing', ''], dtype=object)
array(['Tanemura', 'Takuo', ''], dtype=object)
array(['Nakano', 'Yoshiaki', ''], dtype=object)
array(['Li', 'Shimao', ''], dtype=object)
array(['Cai', 'Xinlun', ''], dtype=object)
array(['Yu', 'Siyuan', ''], dtype=object)]
|
5,084 |
2103.05497
|
Akira Funahashi
|
Hazumi Kubota, Yuta Tokuoka, Takahiro G. Yamada and Akira Funahashi
|
Symbolic integration by integrating learning models with different
strengths and weaknesses
| null |
in IEEE Access, vol. 10, pp. 47000-47010, 2022
|
10.1109/ACCESS.2022.3171329
| null |
cs.LG cs.SC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Integration is indispensable, not only in mathematics, but also in a wide
range of other fields. A deep learning method has recently been developed and
shown to be capable of integrating mathematical functions that could not
previously be integrated on a computer. However, that method treats integration
as equivalent to natural language translation and does not reflect mathematical
information. In this study, we adjusted the learning model to take mathematical
information into account and developed a wide range of learning models that
learn the order of numerical operations more robustly. In this way, we achieved
a 98.80% correct answer rate with symbolic integration, a higher rate than that
of any existing method. We judged the correctness of the integration based on
whether the derivative of the primitive function was consistent with the
integrand. By building an integrated model based on this strategy, we achieved
a 99.79% rate of correct answers with symbolic integration.
|
[{'version': 'v1', 'created': 'Tue, 9 Mar 2021 15:46:36 GMT'}]
|
2022-05-10
|
[array(['Kubota', 'Hazumi', ''], dtype=object)
array(['Tokuoka', 'Yuta', ''], dtype=object)
array(['Yamada', 'Takahiro G.', ''], dtype=object)
array(['Funahashi', 'Akira', ''], dtype=object)]
|
5,085 |
2211.02568
|
Edward Kuester
|
Alfred Potier and Edward Kuester (translator)
|
Investigation of the solution of a system of partial differential
equations with periodic coefficients
|
20 pages; translated from the French, edited and annotated by Edward
F. Kuester
| null | null | null |
physics.hist-ph math.AP physics.optics
|
http://creativecommons.org/licenses/by/4.0/
|
This is an English translation of a paper by the French physicist Alfred
Potier (1840-1905) that originally appeared 150 years ago [A. Potier,
``Recherches sur l'int\'egration d'un syst\`eme d'\'equations aux
diff\'erentielles partielles \`a coefficients p\'eriodiques,'' Comptes Rendus
de l'Association Fran\c{c}aise pour l'Avancement des Sciences (Bordeaux), vol.
1, pp. 255-272 (1872)]. The paper presents an analysis of wave propagation
through a periodic medium by a method that in many ways anticipated the
technique of multiple-scale homogenization by more than a century.
|
[{'version': 'v1', 'created': 'Tue, 1 Nov 2022 18:35:43 GMT'}]
|
2022-11-07
|
[array(['Potier', 'Alfred', '', 'translator'], dtype=object)
array(['Kuester', 'Edward', '', 'translator'], dtype=object)]
|
5,086 |
1404.7579
|
Takashi Okamoto
|
Takashi Okamoto (1), Ikkoh Shimizu (2), Naoki Yoshida (2) ((1)
Hokkaido University, (2) Tokyo University)
|
Reproducing cosmic evolution of galaxy population from $z = 4$ to $0$
|
14 pages, 9 figures, accepted for publication in PASJ
| null |
10.1093/pasj/psu046
| null |
astro-ph.GA astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present cosmological hydrodynamic simulations performed to study evolution
of galaxy population. The simulations follow timed release of mass, energy, and
metals by stellar evolution and employ phenomenological treatments of supernova
feedback, pre-supernova feedback modeled as feedback by radiation pressure from
massive stars, and quenching of gas cooling in large halos. We construct the
fiducial model so that it reproduces the observationally estimated galaxy
stellar mass functions and the relationships between the galaxy stellar mass
and the host halo mass from $z = 4$ to 0. We find that the fiducial model
constructed this way naturally explains the cosmic star formation history, the
galaxy downsizing, and the star formation rate and metallicity of the
star-forming galaxies. The simulations without the quenching of the gas cooling
in large halos overproduce massive galaxies at $z < 2$ and fail to reproduce
galaxy downsizing. The simulations that do not employ the radiation pressure
feedback from young stars predict too strong redshift evolution of the
mass-metallicity relation. Furthermore, the slope of the relation becomes too
steep at low redshift without the radiation pressure feedback. The metallicity
dependence in the radiation pressure feedback is a key to explain the observed
mass-metallicity relation. These facts indicate that these two processes in
addition to supernova feedback are essential for galaxy evolution. Our simple
phenomenological model is suitable to construct a mock galaxy sample to study
physical properties of observed galaxy populations.
|
[{'version': 'v1', 'created': 'Wed, 30 Apr 2014 02:51:52 GMT'}]
|
2014-09-15
|
[array(['Okamoto', 'Takashi', ''], dtype=object)
array(['Shimizu', 'Ikkoh', ''], dtype=object)
array(['Yoshida', 'Naoki', ''], dtype=object)]
|
5,087 |
2212.14493
|
Yoshiyuki Ohtsubo
|
Yoshiyuki Ohtsubo, Takuto Nakamura, Shin-ichi Kimura
|
Growth of 2D topological material Bi on InSb(111)B with fractal surface
structures
|
12 pages, 3 figures
| null | null | null |
cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by/4.0/
|
Bismuth (Bi) atomic layers are known as 2D topological materials with variety
of the electronic structures and topological orders depending on the number of
stacking layers. Recently, it is reported that few layers of Bi grown on
semiconductor substrate InSb(111)B exhibit the Sierpi\'{n}ski-triangle (ST)
fractal patterns on the surface. In this work, we have grown Bi layers on
InSb(111)B and traced the evolution of the atomic and electronic structures of
Bi. The surface atomic structures and growth modes were monitored by using
reflective high-energy electron diffraction and core-level photoelectron
spectroscopy. It is suggested that the single layer of the ST-phase Bi grows on
InSb(111)B and the following Bi deposition causes layer-by-layer growth up to
nominally 4 atomic layers. Diffuse band dispersion and quantum well states
observed by angle-resolved photoelectron spectroscopy are consistent with the
small surface domains and variation of the thickness even during the
layer-by-layer growth region. The further Bi evaporation changes the growth
mode to the 3D island formation. The unveiled growth behavior of Bi on
InSb(111)B would provide a new interesting playground to study 2D topological
electronic structure of quasi-periodic 2D atomic layers.
|
[{'version': 'v1', 'created': 'Fri, 30 Dec 2022 00:22:14 GMT'}]
|
2023-01-02
|
[array(['Ohtsubo', 'Yoshiyuki', ''], dtype=object)
array(['Nakamura', 'Takuto', ''], dtype=object)
array(['Kimura', 'Shin-ichi', ''], dtype=object)]
|
5,088 |
1705.01190
|
T. M. Dunster
|
T. M. Dunster, A. Gil, J. Segura
|
Uniform asymptotic expansions for Laguerre polynomials and related
confluent hypergeometric functions
|
Submitted to Advances in Computational Mathematics
| null | null | null |
math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Uniform asymptotic expansions involving exponential and Airy functions are
obtained for Laguerre polynomials $L_{n}^{(\alpha)}(x)$, as well as
complementary confluent hypergeometric functions. The expansions are valid for
$n$ large and $\alpha$ small or large, uniformly for unbounded real and complex
values of $x$. The new expansions extend the range of computability of
$L_n^{(\alpha)}(x)$ compared to previous expansions, in particular with respect
to higher terms and large values of $\alpha$. Numerical evidence of their
accuracy for real and complex values of $x$ is provided.
|
[{'version': 'v1', 'created': 'Tue, 2 May 2017 22:26:48 GMT'}]
|
2017-05-04
|
[array(['Dunster', 'T. M.', ''], dtype=object)
array(['Gil', 'A.', ''], dtype=object)
array(['Segura', 'J.', ''], dtype=object)]
|
5,089 |
1804.07106
|
Matteo Grandi
|
Matteo Grandi, Daniel Camps-Mur, August Betzler, Joan Josep Aleixendri
and Miguel Catalan-Cid
|
SWAM: SDN-based Wi-Fi Small Cells with Joint Access-Backhaul and
Multi-Tenant Capabilities
| null | null | null | null |
cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Dense deployments of Small Cells are required to deliver the capacity
promised by 5G networks. In this paper we present SWAM, a system that builds on
commodity Wi-Fi routers with multiple wireless interfaces to provide a wireless
access infrastructure supporting multi-tenancy, mobility, and integrated
wireless access and backhaul. An infrastructure provider can deploy inexpensive
SWAM nodes to cover a given geographical area, and re-sell this capacity to
provide on-demand connectivity for Mobile Network Operators. Our main
contribution is the design of the SWAM datapath and control plane, which are
inspired by the overlay techniques used to enable multi-tenancy in data-center
networks. We prototype SWAM in an office wireless testbed, and validate
experimentally its functionality.
|
[{'version': 'v1', 'created': 'Thu, 19 Apr 2018 12:20:21 GMT'}]
|
2018-04-20
|
[array(['Grandi', 'Matteo', ''], dtype=object)
array(['Camps-Mur', 'Daniel', ''], dtype=object)
array(['Betzler', 'August', ''], dtype=object)
array(['Aleixendri', 'Joan Josep', ''], dtype=object)
array(['Catalan-Cid', 'Miguel', ''], dtype=object)]
|
5,090 |
2306.07841
|
Dong Seob Kim
|
Dong Seob Kim, Roy C. Dominguez, Rigo Mayorga-Luna, Dingyi Ye, Jacob
Embley, Tixuan Tan, Yue Ni, Zhida Liu, Mitchell Ford, Frank Y. Gao, Saba
Arash, Kenji Watanabe, Takashi Taniguchi, Suenne Kim, Chih-Kang Shih, Keji
Lai, Wang Yao, Li Yang, Xiaoqin Li, Yoichi Miyahara
|
Electrostatic moir\'e potential from twisted-hBN layers
| null | null | null | null |
cond-mat.mtrl-sci cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Moir\'e superlattices formed by vertically stacking van der Waals layers host
a rich variety of correlated electronic phases and function as novel photonic
materials. The moir\'e potential of the superlattice, however, is fixed by the
interlayer coupling of the stacked functional layers (e.g. graphene) and
dependent on carrier types (e.g. electrons or holes) and valleys (e.g. {\Gamma}
vs. K). In contrast, twisted hexagonal boron nitride (hBN) layers are predicted
to impose a periodic electrostatic potential that may be used to engineer the
properties of an adjacent functional thin layer. Here, we show that this
potential is described by a simple theory of electric polarization originating
from the interfacial charge redistribution, validated by its dependence on
supercell sizes and distance from the twisted interfaces. We demonstrate that
the potential depth and profile can be further controlled by assembling a
double moir\'e structure. When the twist angles are similar at the two
interfaces, the potential is deepened by adding the potential from the two
twisted interfaces, reaching ~ 400 meV. When the twist angles are dissimilar at
the two interfaces, multi-level polarization states are observed. As an example
of controlling a functional layer, we demonstrate how the electrostatic
potential from a twisted hBN substrate impedes exciton diffusion in a
semiconductor monolayer. These findings suggest exciting opportunities for
engineering properties of an adjacent functional layer using the surface
potential of a twisted hBN substrate.
|
[{'version': 'v1', 'created': 'Tue, 13 Jun 2023 15:20:07 GMT'}]
|
2023-06-14
|
[array(['Kim', 'Dong Seob', ''], dtype=object)
array(['Dominguez', 'Roy C.', ''], dtype=object)
array(['Mayorga-Luna', 'Rigo', ''], dtype=object)
array(['Ye', 'Dingyi', ''], dtype=object)
array(['Embley', 'Jacob', ''], dtype=object)
array(['Tan', 'Tixuan', ''], dtype=object)
array(['Ni', 'Yue', ''], dtype=object)
array(['Liu', 'Zhida', ''], dtype=object)
array(['Ford', 'Mitchell', ''], dtype=object)
array(['Gao', 'Frank Y.', ''], dtype=object)
array(['Arash', 'Saba', ''], dtype=object)
array(['Watanabe', 'Kenji', ''], dtype=object)
array(['Taniguchi', 'Takashi', ''], dtype=object)
array(['Kim', 'Suenne', ''], dtype=object)
array(['Shih', 'Chih-Kang', ''], dtype=object)
array(['Lai', 'Keji', ''], dtype=object)
array(['Yao', 'Wang', ''], dtype=object)
array(['Yang', 'Li', ''], dtype=object)
array(['Li', 'Xiaoqin', ''], dtype=object)
array(['Miyahara', 'Yoichi', ''], dtype=object)]
|
5,091 |
1201.0867
|
Antoine Klauser
|
Antoine Klauser, Jorn Mossel, Jean-S\'ebastien Caux
|
Adjacent Spin Operator Dynamical Structure Factor of the S=1/2
Heisenberg Chain
|
16 pages
|
J. Stat. Mech. (2012) P03012
|
10.1088/1742-5468/2012/03/P03012
| null |
cond-mat.str-el cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Considering the adjacent spin operators $S^z_jS^z_{j+1}$ and $S^-_jS^-_{j+1}$
in the S=1/2 Heisenberg chain, we give a determinant representation of their
form factors. The dynamical structure factors of the respective operators are
computed over the whole Brillouin zone in several magnetic fields and the
resulting signal is analyzed in terms of excitation types. Among other results,
we find that the $S^z_jS^z_{j+1}$ dynamical structure factor carries a large
weight of the 4-spinon excitations which are distinguishable from the 2-spinon
signal because they are located outside the 2-spinon spectrum.
|
[{'version': 'v1', 'created': 'Wed, 4 Jan 2012 10:33:22 GMT'}]
|
2012-03-27
|
[array(['Klauser', 'Antoine', ''], dtype=object)
array(['Mossel', 'Jorn', ''], dtype=object)
array(['Caux', 'Jean-Sébastien', ''], dtype=object)]
|
5,092 |
1604.02602
|
Ahmad AlAmmouri
|
Hesham ElSawy, Ahmad AlAmmouri, Osama Amin, and Mohamed-Slim Alouini
|
Can Uplink Transmissions Survive in Full-duplex Cellular Environments?
|
Accepted in EW2016
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In-band full-duplex (FD) communication is considered a potential candidate to
be adopted by the fifth generation (5G) cellular networks. FD communication
renders the entire spectrum simultaneously accessible by uplink and downlink,
and hence, is optimistically promoted to double the transmission rate. While
this is true for a single communication link, cross-mode interference (i.e.,
interference between uplink and downlink) may diminish the full-duplexing gain.
This paper studies FD operation in large-scale cellular networks with real base
stations (BSs) locations and 3GPP propagation environment. The results show
that the uplink is the bottleneck for FD operation due to the overwhelming
cross-mode interference from BSs. Operating uplink and downlink on a common set
of channels in an FD fashion improves the downlink rate but significantly
degrades (over 1000-fold) the uplink rate. Therefore, we propose the
$\alpha$-duplex scheme to balance the tradeoff between the uplink and downlink
rates via adjustable partial overlap between uplink and downlink channels. The
$\alpha$-duplex scheme can provide a simultaneous $30\%$ improvement in each of
the uplink and downlink rates. To this end, we discuss the backward
compatibility of the $\alpha$-duplex scheme with half-duplex user-terminals.
Finally, we point out future research directions for FD enabled cellular
networks.
|
[{'version': 'v1', 'created': 'Sat, 9 Apr 2016 19:49:11 GMT'}]
|
2016-04-12
|
[array(['ElSawy', 'Hesham', ''], dtype=object)
array(['AlAmmouri', 'Ahmad', ''], dtype=object)
array(['Amin', 'Osama', ''], dtype=object)
array(['Alouini', 'Mohamed-Slim', ''], dtype=object)]
|
5,093 |
1406.2495
|
Paolo Missier
|
Hugo Firth and Paolo Missier
|
ProvGen: generating synthetic PROV graphs with predictable structure
|
IPAW'14 paper, In Procs. IPAW 2014 (Provenance and Annotations).
Koln, Germany: Springer, 2014
| null | null | null |
cs.DB
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper introduces provGen, a generator aimed at producing large synthetic
provenance graphs with predictable properties and of arbitrary size. Synthetic
provenance graphs serve two main purposes. Firstly, they provide a variety of
controlled workloads that can be used to test storage and query capabilities of
provenance management systems at scale. Secondly, they provide challenging
testbeds for experimenting with graph algorithms for provenance analytics, an
area of increasing research interest. provGen produces PROV graphs and stores
them in a graph DBMS (Neo4J). A key feature is to let users control the
relationship makeup and topological features of the graph, by providing a seed
provenance pattern along with a set of constraints, expressed using a custom
Domain Specific Language. We also propose a simple method for evaluating the
quality of the generated graphs, by measuring how realistically they simulate
the structure of real-world patterns.
|
[{'version': 'v1', 'created': 'Tue, 10 Jun 2014 10:20:33 GMT'}]
|
2014-06-11
|
[array(['Firth', 'Hugo', ''], dtype=object)
array(['Missier', 'Paolo', ''], dtype=object)]
|
5,094 |
2008.09296
|
Avishek Rudra
|
Avishek Rudra and Marc M. Hirschmann
|
Experimental determination of ferric iron partitioning between pyroxene
and melt at 100KPa
| null | null | null | null |
physics.geo-ph astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Pyroxene is the principal host of Fe$^{3+}$ in basalt source regions, hosting
79 and 81% of the Fe$^{3+}$ in spinel and garnet lherzolite, respectively, with
opx and cpx hosting 48% and 31%, respectively, of the total Fe$^{3+}$ in spinel
peridotite. To better understand partitioning of Fe$^{3+}$ between pyroxene and
melt we conducted experiments at 100 KPa with f$_{O2}$ controlled by CO-CO$_2$
gas mixes between $\Delta$QFM -1.19 to +2.06 in a system containing andesitic
melt saturated with opx or cpx only. To produce large (100-150 $\mu$m),
homogeneous pyroxenes, we employed a dynamic cooling technique with a
5-10$\deg$C/h cooling rate, and initial and final dwell temperatures
5-10$\deg$C and 20-30$^\circ$C super and sub-liquidus, respectively. Resulting
pyroxene crystals have absolute variation in Al$_2$O$_3$ and TiO$_2$ <0.05 wt.%
and <0.02 wt.%, respectively. Fe$^{3+}$/Fe$^T$ in pyroxenes and quenched glass
were measured by XANES. We used a newly developed XANES calibration for cpx and
opx by only selecting spectra with X-ray vibrating on the optic axial plane at
$50 \pm 5^\circ$ to the crystallographic c axis. Values of DFe$^{3+}$ cpx/melt
increase from 0.03 to 0.53 as fO2 increases from $\Delta$QFM -0.44 to 2.06,
while DFe$^{3+}$ opx/melt remains unchanged at 0.26 between $\Delta$QFM -1.19
to +1.37. In comparison to natural peridotitic pyroxenes, Fe$^{3+}$/FeT in
pyroxenes crystallized in this study are lower at similar f$_{O2}$, presumably
owing to lower Al$^{3+}$ contents. This study shows that the existing
thermodynamic models implemented in pMELTS and Perple_X over-predict the
stability of Fe$^{3+}$ in pyroxenes, causing an anomalous reduced character to
spinel peridotites at calculated conditions of MORB genesis.
|
[{'version': 'v1', 'created': 'Fri, 21 Aug 2020 04:04:38 GMT'}]
|
2020-08-24
|
[array(['Rudra', 'Avishek', ''], dtype=object)
array(['Hirschmann', 'Marc M.', ''], dtype=object)]
|
5,095 |
1103.2286
|
Jutho Haegeman
|
Jutho Haegeman, Bogdan Pirvu, David J. Weir, J. Ignacio Cirac, Tobias
J. Osborne, Henri Verschelde and Frank Verstraete
|
Variational matrix product ansatz for dispersion relations
|
Published version
|
Phys. Rev. B 85, 100408(R) (2012)
|
10.1103/PhysRevB.85.100408
| null |
quant-ph cond-mat.stat-mech cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A variational ansatz for momentum eigenstates of translation invariant
quantum spin chains is formulated. The matrix product state ansatz works
directly in the thermodynamic limit and allows for an efficient implementation
(cubic scaling in the bond dimension) of the variational principle. Unlike
previous approaches, the ansatz includes topologically non-trivial states
(kinks, domain walls) for systems with symmetry breaking. The method is
benchmarked using the spin-1/2 XXZ antiferromagnet and the spin-1 Heisenberg
antiferromagnet and we obtain surprisingly accurate results.
|
[{'version': 'v1', 'created': 'Fri, 11 Mar 2011 14:56:50 GMT'}
{'version': 'v2', 'created': 'Thu, 1 Dec 2011 14:47:41 GMT'}
{'version': 'v3', 'created': 'Wed, 28 Mar 2012 21:38:47 GMT'}]
|
2012-03-30
|
[array(['Haegeman', 'Jutho', ''], dtype=object)
array(['Pirvu', 'Bogdan', ''], dtype=object)
array(['Weir', 'David J.', ''], dtype=object)
array(['Cirac', 'J. Ignacio', ''], dtype=object)
array(['Osborne', 'Tobias J.', ''], dtype=object)
array(['Verschelde', 'Henri', ''], dtype=object)
array(['Verstraete', 'Frank', ''], dtype=object)]
|
5,096 |
2004.08874
|
Carlo Pagani
|
E. Gozzi, C. Pagani, M. Reuter
|
The Response Field and the Saddle Points of Quantum Mechanical Path
Integrals
|
58 pages
| null |
10.1016/j.aop.2021.168457
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In quantum statistical mechanics, Moyal's equation governs the time evolution
of Wigner functions and of more general Weyl symbols that represent the density
matrix of arbitrary mixed states. A formal solution to Moyal's equation is
given by Marinov's path integral. In this paper we demonstrate that this path
integral can be regarded as the natural link between several conceptual,
geometric, and dynamical issues in quantum mechanics. A unifying perspective is
achieved by highlighting the pivotal role which the response field, one of the
integration variables in Marinov's integral, plays for pure states even. The
discussion focuses on how the integral's semiclassical approximation relates to
its strictly classical limit; unlike for Feynman type path integrals, the
latter is well defined in the Marinov case. The topics covered include a random
force representation of Marinov's integral based upon the concept of "Airy
averaging", a related discussion of positivity-violating Wigner functions
describing tunneling processes, and the role of the response field in
maintaining quantum coherence and enabling interference phenomena. The double
slit experiment for electrons and the Bohm-Aharonov effect are analyzed as
illustrative examples. Furthermore, a surprising relationship between the
instantons of the Marinov path integral over an analytically continued ("Wick
rotated") response field, and the complex instantons of Feynman-type integrals
is found. The latter play a prominent role in recent work towards a
Picard-Lefschetz theory applicable to oscillatory path integrals and the
resurgence program.
|
[{'version': 'v1', 'created': 'Sun, 19 Apr 2020 15:07:16 GMT'}]
|
2021-05-19
|
[array(['Gozzi', 'E.', ''], dtype=object)
array(['Pagani', 'C.', ''], dtype=object)
array(['Reuter', 'M.', ''], dtype=object)]
|
5,097 |
hep-ph/9706278
|
Rainer Dick
|
Rainer Dick
|
Vector and scalar confinement in gauge theory with a dilaton
|
Latex, 7 pages
|
Phys.Lett. B409 (1997) 321-324
|
10.1016/S0370-2693(97)00881-2
|
LMU-TPW-97/14
|
hep-ph
| null |
In a recent letter it has been shown that gauge theory with a dilaton
provides linearly increasing gauge potentials from static or uniformly moving
pointlike colour sources. This ensures confinement in the framework of no-pair
equations. Here I would like to point out that a dilaton coupling both to the
gauge curvature term and to fermion masses yields a linear potential with a
scalar component and a dominant vector contribution.
|
[{'version': 'v1', 'created': 'Sat, 7 Jun 1997 18:54:03 GMT'}
{'version': 'v2', 'created': 'Mon, 16 Jun 1997 15:02:23 GMT'}]
|
2009-10-30
|
[array(['Dick', 'Rainer', ''], dtype=object)]
|
5,098 |
1603.03901
|
Salim Rostam
|
Salim Rostam
|
Cyclotomic Yokonuma-Hecke algebras are cyclotomic quiver Hecke algebras
|
v2: 45 pages, 3 figures; we made slight changes of notation and added
a 6th section. v3: some minor changes (mainly 6.1.2). Final version. v4: some
typos
|
Advances in Mathematics 311 (2017) 662-729
|
10.1016/j.aim.2017.03.004
| null |
math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that cyclotomic Yokonuma--Hecke algebras of type A are cyclotomic
quiver Hecke algebras and we give an explicit isomorphism with its inverse,
using a similar result of Brundan and Kleshchev on cyclotomic Hecke algebras.
The quiver we use is given by disjoint copies of cyclic quivers. We relate this
work to an isomorphism of Lusztig.
|
[{'version': 'v1', 'created': 'Sat, 12 Mar 2016 12:36:19 GMT'}
{'version': 'v2', 'created': 'Fri, 24 Jun 2016 10:42:36 GMT'}
{'version': 'v3', 'created': 'Wed, 5 Apr 2017 13:17:51 GMT'}
{'version': 'v4', 'created': 'Fri, 23 Nov 2018 08:35:00 GMT'}]
|
2018-11-26
|
[array(['Rostam', 'Salim', ''], dtype=object)]
|
5,099 |
1904.01908
|
Pierre Falez
|
Pierre Falez, Pierre Tirilly, Ioan Marius Bilasco, Philippe Devienne,
Pierre Boulet
|
Multi-layered Spiking Neural Network with Target Timestamp Threshold
Adaptation and STDP
| null | null | null | null |
cs.CV cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Spiking neural networks (SNNs) are good candidates to produce
ultra-energy-efficient hardware. However, the performance of these models is
currently behind traditional methods. Introducing multi-layered SNNs is a
promising way to reduce this gap. We propose in this paper a new threshold
adaptation system which uses a timestamp objective at which neurons should
fire. We show that our method leads to state-of-the-art classification rates on
the MNIST dataset (98.60%) and the Faces/Motorbikes dataset (99.46%) with an
unsupervised SNN followed by a linear SVM. We also investigate the sparsity
level of the network by testing different inhibition policies and STDP rules.
|
[{'version': 'v1', 'created': 'Wed, 3 Apr 2019 10:47:34 GMT'}]
|
2019-04-04
|
[array(['Falez', 'Pierre', ''], dtype=object)
array(['Tirilly', 'Pierre', ''], dtype=object)
array(['Bilasco', 'Ioan Marius', ''], dtype=object)
array(['Devienne', 'Philippe', ''], dtype=object)
array(['Boulet', 'Pierre', ''], dtype=object)]
|
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