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|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
19,100 |
1411.0421
|
Antonio Orzelli
|
S. Biagi, A. Orzelli
|
The Central Logic Board and its auxiliary boards for the optical module
of the KM3NeT detector
| null | null |
10.1088/1748-0221/9/12/C12033
| null |
astro-ph.IM physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The KM3NeT neutrino telescope will be composed of many optical modules, each
of them containing 31 (3") photomultipliers, connected to a Central Logic
Board. The Central Logic Board integrates Time to Digital Converters that
measure Time Over Threshold of the photomulti- pliers signals while White
Rabbit is used for the optical modules time synchronization. Auxiliary boards
have also been designed and built in order to test and extend the performance
of the Cen- tral Logic Board. The Central Logic Board, as well as the auxiliary
boards, will be presented by focusing on the design consideration, prototyping
issues and tests.
|
[{'version': 'v1', 'created': 'Mon, 3 Nov 2014 10:48:25 GMT'}
{'version': 'v2', 'created': 'Wed, 12 Nov 2014 18:10:46 GMT'}]
|
2015-06-23
|
[array(['Biagi', 'S.', ''], dtype=object)
array(['Orzelli', 'A.', ''], dtype=object)]
|
19,101 |
2108.05377
|
Sabir Ramazanov Dr.
|
William T. Emond, Sabir Ramazanov, Rome Samanta
|
Gravitational waves from melting cosmic strings
|
24 pages, 1 figure; clarifications added, typos fixed, figure
updated; matches published version
|
JCAP01(2022)057
|
10.1088/1475-7516/2022/01/057
| null |
hep-ph astro-ph.CO gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Appearance of cosmic strings in the early Universe is a common manifestation
of new physics typically linked to some high energy scale. In this paper, we
discuss a different situation, where a model underlying cosmic string formation
is approximately scale free. String tension is naturally related to the square
of the temperature of the hot primordial plasma in such a setting, and hence
decreases with (cosmic) time. With gravitational backreaction neglected, the
dynamics of these melting strings in an expanding Universe is equivalent to the
dynamics of constant tension strings in a Minkowski spacetime. We provide an
estimate for the emission of gravitational waves from string loops. Contrary to
the standard case, the resulting spectrum is markedly non-flat and has a
characteristic falloff at frequencies below the peak one. The peak frequency is
defined by the underlying model and lies in the range accessible by the future
detectors for very weak couplings involved.
|
[{'version': 'v1', 'created': 'Wed, 11 Aug 2021 18:01:19 GMT'}
{'version': 'v2', 'created': 'Wed, 26 Jan 2022 17:08:59 GMT'}]
|
2022-02-02
|
[array(['Emond', 'William T.', ''], dtype=object)
array(['Ramazanov', 'Sabir', ''], dtype=object)
array(['Samanta', 'Rome', ''], dtype=object)]
|
19,102 |
2108.10874
|
Fahad Mahmood
|
Soyeun Kim, Robert C. McKay, Nina Bielinski, Chengxi Zhao, Meng-Kai
Lin, Joseph A. Hlevyack, Xuefei Guo, Sung-Kwan Mo, Peter Abbamonte, Tai-Chang
Chiang, Andr\'e Schleife, Daniel P. Shoemaker, Barry Bradlyn, Fahad Mahmood
|
Kramers-Weyl fermions in the chiral charge density wave material
(TaSe$_4$)$_2$I
| null | null | null | null |
cond-mat.str-el cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The quasi-one-dimensional chiral charge density wave (CDW) material
(TaSe$_4$)$_2$I has been recently predicted to host Kramers-Weyl (KW) fermions
which should exist in the vicinity of high symmetry points in the Brillouin
zone in chiral materials with strong spin-orbit coupling. However, direct
spectroscopic evidence of KW fermions is limited. Here we use
helicity-dependent laser-based angle resolved photoemission spectroscopy
(ARPES) in conjunction with tight-binding and first-principles calculations to
identify KW fermions in (TaSe$_4$)$_2$I. We find that topological and symmetry
considerations place distinct constraints on the (pseudo-) spin texture and the
observed spectra around a KW node. We further reveal an interplay between the
spin texture around the chiral KW node and the onset of CDW order in
(TaSe$_4$)$_2$I. Our findings highlight the unique topological nature of
(TaSe$_4$)$_2$I and provide a pathway for identifying KW fermions in other
chiral materials.
|
[{'version': 'v1', 'created': 'Tue, 24 Aug 2021 17:55:10 GMT'}]
|
2021-08-25
|
[array(['Kim', 'Soyeun', ''], dtype=object)
array(['McKay', 'Robert C.', ''], dtype=object)
array(['Bielinski', 'Nina', ''], dtype=object)
array(['Zhao', 'Chengxi', ''], dtype=object)
array(['Lin', 'Meng-Kai', ''], dtype=object)
array(['Hlevyack', 'Joseph A.', ''], dtype=object)
array(['Guo', 'Xuefei', ''], dtype=object)
array(['Mo', 'Sung-Kwan', ''], dtype=object)
array(['Abbamonte', 'Peter', ''], dtype=object)
array(['Chiang', 'Tai-Chang', ''], dtype=object)
array(['Schleife', 'André', ''], dtype=object)
array(['Shoemaker', 'Daniel P.', ''], dtype=object)
array(['Bradlyn', 'Barry', ''], dtype=object)
array(['Mahmood', 'Fahad', ''], dtype=object)]
|
19,103 |
1801.10522
|
Matthias Lutz F.M.
|
Ruchipas Bavontaweepanya, Xiao-Yu Guo and Matthias F.M. Lutz
|
On the chiral expansion of vector meson masses
|
39 pages, 8 figures
|
Phys. Rev. D 98, 056005 (2018)
|
10.1103/PhysRevD.98.056005
| null |
hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the chiral expansion of meson masses and decay constants using a
chiral Lagrangian that was constructed previously based on the hadrogenesis
conjecture. The one-loop self energies of the Goldstone bosons and vector
mesons are evaluated. It is illustrated that a renormalizeable effective field
theory arises once specific conditions on the low-energy constants are imposed.
For the case where the hadrogenesis mass gap scale Lambda_{HG} is substantially
larger than the chiral symmetry breaking scale Lambda_chi a partial summation
scheme is required. All terms proportional to (M/\Lambda_\chi)^n can be summed
by a suitable renormalization, where M is the chiral and large-N_c limit of the
vector meson masses in QCD. The size of loop effects from vector meson degrees
of freedom is illustrated for physical quarks masses. Naturally sized effects
are observed that have significant impact on the chiral structure of low-energy
QCD with three light flavours.
|
[{'version': 'v1', 'created': 'Wed, 31 Jan 2018 16:09:30 GMT'}]
|
2018-09-19
|
[array(['Bavontaweepanya', 'Ruchipas', ''], dtype=object)
array(['Guo', 'Xiao-Yu', ''], dtype=object)
array(['Lutz', 'Matthias F. M.', ''], dtype=object)]
|
19,104 |
2305.03696
|
Kazem Azizi
|
S. S. Agaev, K. Azizi, B. Barsbay, H. Sundu
|
Hadronic molecules $\eta_c \eta_c$ and $\chi_{c0}\chi_{c0}$
|
12 Pages, 4 Figures and 2 Tables. arXiv admin note: text overlap with
arXiv:2304.03244, arXiv:2304.09943
| null | null | null |
hep-ph hep-ex hep-lat
|
http://creativecommons.org/licenses/by/4.0/
|
The fully charmed hadronic scalar molecules $\mathcal{M}_1=\eta_c \eta_c$ and
$\mathcal{M}_2=\chi_{c0}\chi_{c0}$ are studied in the context of the QCD sum
rule method. The masses $m$, $\widetilde{m}$ and current couplings $f$, $
\widetilde{f}$ of these states are calculated using the two-point sum rule
approach. The obtained results $m=(6264 \pm 50)~\mathrm{MeV}$ and $
\widetilde{m}=(6954 \pm 50)~\mathrm{MeV}$ are employed to determine their decay
channels. It is demonstrated that the processes $\mathcal{M}_1\to J/\psi J/\psi
$ and $\mathcal{M}_1\to \eta _{c}\eta _{c}$ are kinematically allowed decay
modes of $\mathcal{M}_1$. The molecule $\mathcal{M}_2$ decays to $ J/\psi
J/\psi$, $J/\psi \psi^{\prime}$, $\eta _{c}\eta _{c}$, $\eta _{c}\eta
_{c}(2S)$, $\eta _{c}\chi _{c1}(1P)$, and $\chi_{c0} \chi_{c0}$ mesons. The
partial widths of all of these processes are evaluated by means of the
three-point sum rule calculations, which are necessary to extract the strong
couplings $g_i$ at vertices $\mathcal{M}_1J/\psi J/\psi $, $\mathcal{M} _1\eta
_{c}\eta _{c}$, and others. Our estimates for the full widths of the molecules
$\Gamma_{\mathcal{M}_1}=(320 \pm 72)~\mathrm{MeV}$ and $\Gamma _{
\mathcal{M}_2}=(138 \pm 18)~\mathrm{MeV}$, as well as their masses are compared
with parameters of the scalar $X$ resonances discovered by the LHCb-ATLAS-CMS
Collaborations in the di-$J/\psi$ and $J/\psi\psi^{\prime}$ invariant mass
distributions. We argue that the molecule $\mathcal{M}_1$ can be considered as
a real candidate to the scalar resonance $X(6200)$. The structure
$\mathcal{M}_2$ may be interpreted as the resonance $X(6900)$ or treated in
conjunction with a scalar tetraquark as one of its components.
|
[{'version': 'v1', 'created': 'Fri, 5 May 2023 17:16:05 GMT'}]
|
2023-05-08
|
[array(['Agaev', 'S. S.', ''], dtype=object)
array(['Azizi', 'K.', ''], dtype=object)
array(['Barsbay', 'B.', ''], dtype=object)
array(['Sundu', 'H.', ''], dtype=object)]
|
19,105 |
1708.00425
|
David Bancelin
|
David Bancelin, Thomas Nordlander, Elke Pilat-Lohinger and Birgit
Loibnegger
|
Dynamics of passing-stars-perturbed binary star systems
|
Accepted for publication (MNRAS)
| null |
10.1093/mnras/stz1173
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we investigate the dynamical effects of a sequence of close
encounters over 200 Myr varying in the interval of 10000 -- 100000 au between a
binary star system and passing stars with masses ranging from 0.1$M_{\odot}$ to
10$M_{\odot}$. We focus on binaries consisting of two Sun-like stars with
various orbital separations $a_{\scriptscriptstyle 0}$ from 50 au to 200 au
initially on circular-planar orbits. We treat the problem statistically since
each sequence is cloned 1000 times. Our study shows that orbits of binaries
initially at $a_{\scriptscriptstyle 0}$ = 50 au will slightly be perturbed by
each close encounter and exhibit a small deviation in eccentricity (+0.03) and
in periapsis distance (+1 and -2 au) around the mean value. However increasing
$a_{\scriptscriptstyle 0}$ will drastically increase these variances: up to
+0.45 in eccentricity and between +63 au and -106 au in periapsis, leading to a
higher rate of disrupted binaries up to 50% after the sequence of close
encounters. Even though the secondary star can remain bound to the primary,
$\sim$20% of the final orbits will have inclinations greater than 10$^{\circ}$.
As planetary formation already takes place when stars are still members of
their birth cluster, we show that the variances in eccentricity and periapsis
distance of Jupiter- and Saturn-like planets will inversely decrease with
$a_{\scriptscriptstyle 0}$ after successive fly-bys. This leads to higher
ejection rate at $a_{\scriptscriptstyle 0}$ = 50 au but to a higher extent for
Saturn-likes (60%) as those planets' apoapsis distances cross the critical
stability distance for such binary separation.
|
[{'version': 'v1', 'created': 'Tue, 1 Aug 2017 17:22:36 GMT'}
{'version': 'v2', 'created': 'Tue, 16 Apr 2019 13:51:25 GMT'}
{'version': 'v3', 'created': 'Thu, 25 Apr 2019 15:28:31 GMT'}]
|
2023-06-14
|
[array(['Bancelin', 'David', ''], dtype=object)
array(['Nordlander', 'Thomas', ''], dtype=object)
array(['Pilat-Lohinger', 'Elke', ''], dtype=object)
array(['Loibnegger', 'Birgit', ''], dtype=object)]
|
19,106 |
1707.01021
|
Massimo Bartoletti
|
Massimo Bartoletti, Andrea Bracciali, Stefano Lande, Livio Pompianu
|
A general framework for blockchain analytics
|
Authors' version of a paper presented at SERIAL'17
| null | null | null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Modern cryptocurrencies exploit decentralised blockchains to record a public
and unalterable history of transactions. Besides transactions, further
information is stored for different, and often undisclosed, purposes, making
the blockchains a rich and increasingly growing source of valuable information,
in part of difficult interpretation. Many data analytics have been developed,
mostly based on specifically designed and ad-hoc engineered approaches. We
propose a general-purpose framework, seamlessly supporting data analytics on
both Bitcoin and Ethereum - currently the two most prominent cryptocurrencies.
Such a framework allows us to integrate relevant blockchain data with data from
other sources, and to organise them in a database, either SQL or NoSQL. Our
framework is released as an open-source Scala library. We illustrate the
distinguishing features of our approach on a set of significant use cases,
which allow us to empirically compare ours to other competing proposals, and
evaluate the impact of the database choice on scalability.
|
[{'version': 'v1', 'created': 'Tue, 4 Jul 2017 14:49:10 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Nov 2017 18:46:21 GMT'}]
|
2017-11-07
|
[array(['Bartoletti', 'Massimo', ''], dtype=object)
array(['Bracciali', 'Andrea', ''], dtype=object)
array(['Lande', 'Stefano', ''], dtype=object)
array(['Pompianu', 'Livio', ''], dtype=object)]
|
19,107 |
hep-ph/0201034
|
Dario Zappala
|
M. Consoli
|
Spontaneous symmetry breaking and the $p \to 0$ limit
|
17 pages, LaTex, small changes and some comments added
|
Phys.Rev. D65 (2002) 105017
|
10.1103/PhysRevD.65.105017
| null |
hep-ph
| null |
We point out a basic ambiguity in the $p \to 0$ limit of the connected
propagator in a spontaneously broken phase. This may represent an indication
that the conventional singlet Higgs boson, rather than being a purely massive
field, might have a gap-less branch. This would dominate the energy spectrum
for ${\bf{p}} \to 0$ and give rise to a very weak, long-range force. The
natural interpretation is in terms of density fluctuations of the `Higgs
condensate': in the region of very long wavelengths, infinitely larger than the
Fermi scale, it cannot be treated as a purely classical c-number field.
|
[{'version': 'v1', 'created': 'Mon, 7 Jan 2002 15:19:35 GMT'}
{'version': 'v2', 'created': 'Mon, 25 Mar 2002 11:21:56 GMT'}]
|
2009-11-07
|
[array(['Consoli', 'M.', ''], dtype=object)]
|
19,108 |
1503.00909
|
Thomas Ouldridge
|
Thomas E. Ouldridge, Christopher C. Govern and Pieter Rein ten Wolde
|
The thermodynamics of computational copying in biochemical systems
|
Accepted version
|
Phys. Rev. X 7, 021004 (2017)
|
10.1103/PhysRevX.7.021004
| null |
q-bio.MN cond-mat.stat-mech physics.bio-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Living cells use readout molecules to record the state of receptor proteins,
similar to measurements or copies in typical computational devices. But is this
analogy rigorous? Can cells be optimally efficient, and if not, why? We show
that, as in computation, a canonical biochemical readout network generates
correlations; extracting no work from these correlations sets a lower bound on
dissipation. For general input, the biochemical network cannot reach this
bound, even with arbitrarily slow reactions or weak thermodynamic driving. It
faces an accuracy-dissipation trade-off that is qualitatively distinct from and
worse than implied by the bound, and more complex steady-state copy processes
cannot perform better. Nonetheless, the cost remains close to the thermodynamic
bound unless accuracy is extremely high. Additionally, we show that
biomolecular reactions could be used in thermodynamically optimal devices under
exogenous manipulation of chemical fuels, suggesting an experimental system for
testing computational thermodynamics.
|
[{'version': 'v1', 'created': 'Tue, 3 Mar 2015 11:55:52 GMT'}
{'version': 'v2', 'created': 'Mon, 25 May 2015 08:57:44 GMT'}
{'version': 'v3', 'created': 'Fri, 26 Feb 2016 07:31:01 GMT'}
{'version': 'v4', 'created': 'Thu, 9 Mar 2017 15:17:52 GMT'}]
|
2017-04-12
|
[array(['Ouldridge', 'Thomas E.', ''], dtype=object)
array(['Govern', 'Christopher C.', ''], dtype=object)
array(['Wolde', 'Pieter Rein ten', ''], dtype=object)]
|
19,109 |
0806.4805
|
Masayuki Hashisaka
|
Masayuki Hashisaka, Yoshiaki Yamauchi, Shuji Nakamura, Shinya Kasai,
Teruo Ono, and Kensuke Kobayashi
|
Bolometric Detection of Quantum Shot Noise in Coupled Mesoscopic Systems
|
4 pages, 4 figures
| null |
10.1103/PhysRevB.78.241303
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a new scheme to detect the quantum shot noise in coupled
mesoscopic systems. By applying the noise thermometry to the capacitively
coupled quantum point contacts (QPCs) we prove that the noise temperature of
one QPC is in perfect proportion to that of the other QPC which is driven to
non-equilibrium to generate quantum shot noise. We also found an unexpected
effect that the noise in the source QPC is remarkably suppressed possibly due
to the cooling effect by the detector QPC.
|
[{'version': 'v1', 'created': 'Mon, 30 Jun 2008 05:39:43 GMT'}]
|
2009-11-13
|
[array(['Hashisaka', 'Masayuki', ''], dtype=object)
array(['Yamauchi', 'Yoshiaki', ''], dtype=object)
array(['Nakamura', 'Shuji', ''], dtype=object)
array(['Kasai', 'Shinya', ''], dtype=object)
array(['Ono', 'Teruo', ''], dtype=object)
array(['Kobayashi', 'Kensuke', ''], dtype=object)]
|
19,110 |
1911.02919
|
Jun Fang
|
Jun Fang, Jingwen Yan, Lu Wen, Chunyan Lu, Huan Yu
|
Numerically investigating the morphology of the supernova remnant SN
1006 in the ambient medium with a density discontinuity
|
6 pages, 5 figures, submitted to MNRAS
| null |
10.1093/mnras/stz3214
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Multiband observations on the type Ia supernova remnant SN 1006 indicate
peculiar properties in its morphologies of emission in the radio, optical and
X-ray bands. In the hard X-rays, the remnant is bilateral with two opposite
bright limbs with prominent protrusions. Moreover, a filament has been detected
at the radio, optical and soft X-ray wavelengthes. The reason for these
peculiar features in the morphologies of the remnant is investigated using 3D
HD simulations. With the assumption that the supernova ejecta is evolved in the
ambient medium with a density discontinuity, the radius of the remnant's
boundary is smaller in the tenuous medium, and the shell consists of two
hemispheres with different radiuses. Along particular line of sights,
protrusions appear on the periphery of the remnants since the emission from the
edge of the hemisphere with a larger radius is located outside that from the
shell of the small hemisphere. Furthermore, the northwest filament of SN 1006
arises as a result of the intersection of the line of sight and the shocked
material near the edges of the two hemispheres. It can be concluded that the
features that the protrusions on the northeast and southwest limbs and the
northwest filament in the morphologies of SN 1006 can be reproduced as the
remnants interacting with the medium with a density discontinuity.
|
[{'version': 'v1', 'created': 'Thu, 7 Nov 2019 14:11:46 GMT'}]
|
2020-01-08
|
[array(['Fang', 'Jun', ''], dtype=object)
array(['Yan', 'Jingwen', ''], dtype=object)
array(['Wen', 'Lu', ''], dtype=object)
array(['Lu', 'Chunyan', ''], dtype=object)
array(['Yu', 'Huan', ''], dtype=object)]
|
19,111 |
1501.05639
|
Matthew Muterspaugh
|
Matthew W. Muterspaugh, M.J.P. Wijngaarden, H.F. Henrichs, Benjamin F.
Lane, William I. Hartkopf, Gregory W. Henry
|
Predicting alpha Comae Berenices Time of Eclipse II: How 3 Faulty
Measurements Out of 609 Caused A 26 Year Binary's Eclipse To Be Missed
|
3 pages, to be submitted to ApJL
| null |
10.1088/0004-6256/150/5/140
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The dwarf stars in the 26 year period binary alpha Com were predicted to
eclipse each other in early 2015. That prediction was based on an orbit model
made with over 600 astrometric observations using micrometers, speckle
interferometry, and long baseline optical interferometry. Unfortunately, it has
been realized recently that the position angle measurements for three of the
observations from ~100 years ago were in error by 180 degrees, which skewed the
orbital fit. The eclipse was likely 2 months earlier than predicted, at which
point the system was low on the horizon at sunrise.
|
[{'version': 'v1', 'created': 'Thu, 22 Jan 2015 20:54:35 GMT'}]
|
2015-10-14
|
[array(['Muterspaugh', 'Matthew W.', ''], dtype=object)
array(['Wijngaarden', 'M. J. P.', ''], dtype=object)
array(['Henrichs', 'H. F.', ''], dtype=object)
array(['Lane', 'Benjamin F.', ''], dtype=object)
array(['Hartkopf', 'William I.', ''], dtype=object)
array(['Henry', 'Gregory W.', ''], dtype=object)]
|
19,112 |
1308.2673
|
Yin-Zhe Ma
|
Yin-Zhe Ma, James E. Taylor, Douglas Scott
|
Independent constraints on local non-Gaussianity from the peculiar
velocity and density fields
|
10 pages, 11 figures
|
2013, MNRAS, 436, 2029
|
10.1093/mnras/stt1726
| null |
astro-ph.CO hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Primordial, non-Gaussian perturbations can generate scale-dependent bias in
the galaxy distribution. This in turn will modify correlations between galaxy
positions and peculiar velocities at late times, since peculiar velocities
reflect the underlying matter distribution, whereas galaxies are a biased
tracer of the same. We study this effect, and show that non-Gaussianity can be
constrained by comparing the observed peculiar velocity field to a model
velocity field reconstructed from the galaxy density field assuming linear
bias. The amplitude of the spatial correlations in the residual map obtained
after subtracting one velocity field from the other is directly proportional to
the strength of the primordial non-Gaussianity. We construct the corresponding
likelihood function use it to constrain the amplitude of the linear flow
$\beta$ and the amplitude of local non-Gaussianity $f^{\rm NL}_{\rm local}$.
Applying our method to two observational data sets, the Type-Ia supernovae
(A1SN) and Spiral Field \textit{I}-band (SFI++) catalogues, we obtain
constraints on the linear flow parameter consistent with the values derived
previously assuming Gaussianity. The marginalised 1-D distribution of $|f^{\rm
NL}_{\rm local}|$ does not show strong evidence for non-zero $f^{\rm NL}_{\rm
local}$, and we set 95% upper limits $|f^{\rm NL}_{\rm local}|<51.4$ from A1SN
and $|f^{\rm NL}_{\rm local}|<92.6$ from SFI++. These limits on $f^{\rm
NL}_{\rm local}$ are as tight as any set by previous large-scale structure
measurements. Our method can be applied to any survey with radial velocities
and density field data, and provides an independent check of recent CMB
constraints on $f^{\rm NL}_{\rm local}$, extending these to smaller spatial
scales.
|
[{'version': 'v1', 'created': 'Mon, 12 Aug 2013 20:00:02 GMT'}
{'version': 'v2', 'created': 'Mon, 25 Nov 2013 19:32:16 GMT'}]
|
2015-06-16
|
[array(['Ma', 'Yin-Zhe', ''], dtype=object)
array(['Taylor', 'James E.', ''], dtype=object)
array(['Scott', 'Douglas', ''], dtype=object)]
|
19,113 |
1004.3247
|
Eduardo Mucciolo
|
E. Novais, Eduardo R. Mucciolo, and Harold U. Baranger
|
Bound on quantum computation time: Quantum error correction in a
critical environment
|
4 pages (revised title, following PRA request)
|
Phys. Rev. A 82, 020303(R) (2010)
|
10.1103/PhysRevA.82.020303
| null |
quant-ph cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We obtain an upper bound on the time available for quantum computation for a
given quantum computer and decohering environment with quantum error correction
implemented. First, we derive an explicit quantum evolution operator for the
logical qubits and show that it has the same form as that for the physical
qubits but with a reduced coupling strength to the environment. Using this
evolution operator, we find the trace distance between the real and ideal
states of the logical qubits in two cases. For a super-Ohmic bath, the trace
distance saturates, while for Ohmic or sub-Ohmic baths, there is a finite time
before the trace distance exceeds a value set by the user.
|
[{'version': 'v1', 'created': 'Mon, 19 Apr 2010 16:32:09 GMT'}
{'version': 'v2', 'created': 'Fri, 24 Sep 2010 16:40:24 GMT'}]
|
2015-05-18
|
[array(['Novais', 'E.', ''], dtype=object)
array(['Mucciolo', 'Eduardo R.', ''], dtype=object)
array(['Baranger', 'Harold U.', ''], dtype=object)]
|
19,114 |
2208.14671
|
Hyma Vallabhapurapu
|
Hyma H. Vallabhapurapu, Ingvild Hansen, Chris Adambukulam, Rainer
Stohr, Andrej Denisenko, Chih Hwan Yang, and Arne Laucht
|
High Fidelity Control of a Nitrogen-Vacancy Spin Qubit at Room
Temperature using the SMART Protocol
|
Minor changes. Updated figures, some text and added more references
| null | null | null |
quant-ph cond-mat.mes-hall
|
http://creativecommons.org/licenses/by/4.0/
|
A practical implementation of a quantum computer requires robust qubits that
are protected against their noisy environment. Dynamical decoupling techniques
have been successfully used in the past to offer protected high-fidelity gate
operations in negatively-charged Nitrogen-Vacancy (NV-) centers in diamond,
albeit under specific conditions with the intrinsic nitrogen nuclear spin
initialised. In this work, we show how the SMART protocol, an extension of the
dressed-qubit concept, can be implemented for continuous protection to offer
Clifford gate fidelities compatible with fault-tolerant schemes, whilst
prolonging the coherence time of a single NV- qubit at room temperature. We
show an improvement in the average Clifford gate fidelity from $0.940\pm0.005$
for the bare qubit to $0.993\pm0.002$ for the SMART qubit, with the nitrogen
nuclear spin in a random orientation. We further show a $\gtrsim$ 30 times
improvement in the qubit coherence times compared to the bare qubit.
|
[{'version': 'v1', 'created': 'Wed, 31 Aug 2022 07:55:12 GMT'}
{'version': 'v2', 'created': 'Fri, 9 Sep 2022 10:33:53 GMT'}]
|
2022-09-12
|
[array(['Vallabhapurapu', 'Hyma H.', ''], dtype=object)
array(['Hansen', 'Ingvild', ''], dtype=object)
array(['Adambukulam', 'Chris', ''], dtype=object)
array(['Stohr', 'Rainer', ''], dtype=object)
array(['Denisenko', 'Andrej', ''], dtype=object)
array(['Yang', 'Chih Hwan', ''], dtype=object)
array(['Laucht', 'Arne', ''], dtype=object)]
|
19,115 |
math/0607823
|
Charles F. Dunkl
|
Charles F. Dunkl
|
An Intertwining Operator for the Group B2
|
27 pages
|
Glasgow Math. J. 49 (2007), 291-319.
| null | null |
math.CA
| null |
There is a commutative algebra of differential-difference operators, acting
on polynomials on R_2, associated with the reflection group B2. This paper
presents an integral transform which intertwines this algebra, allowing one
free parameter, with the algebra of partial derivatives. The method of proof
depends on properties of a certain class of balanced terminating hypergeometric
series of 4F3-type. These properties are in the form of recurrence and
contiguity relations and are proved herein.
|
[{'version': 'v1', 'created': 'Mon, 31 Jul 2006 18:07:13 GMT'}]
|
2011-11-09
|
[array(['Dunkl', 'Charles F.', ''], dtype=object)]
|
19,116 |
1507.08558
|
Jesse Kass Leo
|
Jesse Leo Kass
|
The compactified jacobian can be nonreduced
|
Final version
|
Bull. London Math. Soc. (2015) 47 (4): 686-692
|
10.1112/blms/bdv036
| null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove by explicit example that the compactified jacobian can be
nonreduced. The example is a rational space curve of arithmetic genus 4. This
answers a question posed by Cyril D'Souza in 1979.
|
[{'version': 'v1', 'created': 'Thu, 30 Jul 2015 15:59:27 GMT'}]
|
2015-07-31
|
[array(['Kass', 'Jesse Leo', ''], dtype=object)]
|
19,117 |
1802.06940
|
Alexander Semenov
|
Irina Gribanova and Alexander Semenov
|
Using Automatic Generation of Relaxation Constraints to Improve the
Preimage Attack on 39-step MD4
|
This paper was submitted to MIPRO 2018 as a conference paper
| null | null | null |
cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we construct preimage attack on the truncated variant of the
MD4 hash function. Specifically, we study the MD4-39 function defined by the
first 39 steps of the MD4 algorithm. We suggest a new attack on MD4-39, which
develops the ideas proposed by H. Dobbertin in 1998. Namely, the special
relaxation constraints are introduced in order to simplify the equations
corresponding to the problem of finding a preimage for an arbitrary MD4-39 hash
value. The equations supplemented with the relaxation constraints are then
reduced to the Boolean Satisfiability Problem (SAT) and solved using the
state-of-the-art SAT solvers. We show that the effectiveness of a set of
relaxation constraints can be evaluated using the black-box function of a
special kind. Thus, we suggest automatic method of relaxation constraints
generation by applying the black-box optimization to this function. The
proposed method made it possible to find new relaxation constraints that
contribute to a SAT-based preimage attack on MD4-39 which significantly
outperforms the competition.
|
[{'version': 'v1', 'created': 'Tue, 20 Feb 2018 02:47:41 GMT'}]
|
2019-10-07
|
[array(['Gribanova', 'Irina', ''], dtype=object)
array(['Semenov', 'Alexander', ''], dtype=object)]
|
19,118 |
1712.06555
|
Rome Samanta
|
Rome Samanta, Probir Roy and Ambar Ghosal
|
Consequences of minimal seesaw with complex $\mu\tau$ antisymmetry of
neutrinos
|
30 pages, 6 figures, 4 tables, version to appear in JHEP
| null |
10.1007/JHEP06(2018)085
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a complex extension of $\mu\tau$ permutation antisymmetry in the
neutrino Majorana matrix $M_\nu$. The latter can be realized for the Lagrangian
by appropriate CP transformations on the neutrino fields. The resultant form of
$M_\nu$ is shown to be simply related to that with a complex (CP) extension of
$\mu\tau$ permutation symmetry, with identical phenomenological consequences,
though their group theoretic origins are quite different. We investigate those
consequences in detail for the minimal seesaw induced by two strongly
hierarchical right-chiral neutrinos $N_1$ and $N_2$ with the result that the
Dirac phase is maximal while the two Majorana phases are either 0 or $\pi$. We
further provide an uptodate discussion of the $\beta\beta0\nu$ process
vis-a-vis ongoing and forthcoming experiments. Finally, a thorough treatment is
given of baryogenesis via leptogenesis in this scenario, primarily with the
assumption that the lepton asymmetry produced by the decays of $N_1$ only
matters here with the asymmetry produced by $N_2$ being washed out. Tight upper
and lower bounds on the mass of $N_1$ are obtained from the constraint of
obtaining the correct observed range of the baryon asymmetry parameter and the
role played by $N_2$ is elucidated thereafter. The mildly hierarchical
right-chiral neutrino case (including the quasidegenerate possibility) is
discussed in an Appendix.
|
[{'version': 'v1', 'created': 'Mon, 18 Dec 2017 18:01:08 GMT'}
{'version': 'v2', 'created': 'Thu, 14 Jun 2018 13:08:00 GMT'}]
|
2018-08-01
|
[array(['Samanta', 'Rome', ''], dtype=object)
array(['Roy', 'Probir', ''], dtype=object)
array(['Ghosal', 'Ambar', ''], dtype=object)]
|
19,119 |
0907.5305
|
St\'ephanie Jacquot Miss
|
St\'ephanie Jacquot
|
A historical law of large numbers for the Marcus Lushnikov process
|
47 pages
| null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Marcus-Lushnikov process is a finite stochastic particle system, in which
each particle is entirely characterized by its mass. Each pair of particles
with masses $x$ and $y$ merges into a single particle at a given rate $K(x,y)$.
Under certain assumptions, this process converges to the solution to
Smoluchowski equation, as the number of particles increases to infinity. The
Marcus-Lushnikov process gives at each time the distribution of masses of the
particles present in the system, but does not retain the history of formation
of the particles. In this paper, we set up a historical analogue of the
Marcus-Lushnikov process (built according the rules of construction of the
usual Markov-Lushnikov process) each time giving what we call the historical
tree of a particle. The historical tree of a particle present in the
Marcus-Lushnikov process at a given time $t$ encodes information about the
times and masses of the coagulation events that have formed that particle. We
prove a law of large numbers for the empirical distribution of such historical
trees. The limit is a natural measure on trees which is constructed from a
solution to Smoluchowski coagulation equation.
|
[{'version': 'v1', 'created': 'Thu, 30 Jul 2009 10:31:43 GMT'}]
|
2009-07-31
|
[array(['Jacquot', 'Stéphanie', ''], dtype=object)]
|
19,120 |
1701.03698
|
Jonatan Lenells
|
Jonatan Lenells and Fredrik Viklund
|
Schramm's formula and the Green's function for multiple SLE
|
54 pages
| null | null | null |
math.PR math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct martingale observables for systems of multiple SLE curves by
applying screening techniques within the CFT framework recently developed by
Kang and Makarov, extended to admit multiple SLEs. We illustrate this approach
by rigorously establishing explicit expressions for the Green's function and
Schramm's formula in the case of two curves growing towards infinity. In the
special case when the curves are `fused' and start at the same point, some of
the formulas we prove were predicted in the physics literature.
|
[{'version': 'v1', 'created': 'Fri, 13 Jan 2017 15:10:09 GMT'}
{'version': 'v2', 'created': 'Wed, 19 Dec 2018 09:06:16 GMT'}
{'version': 'v3', 'created': 'Tue, 11 Jun 2019 08:21:52 GMT'}]
|
2019-06-12
|
[array(['Lenells', 'Jonatan', ''], dtype=object)
array(['Viklund', 'Fredrik', ''], dtype=object)]
|
19,121 |
cond-mat/0510578
|
Miroslaw Kozlowski
|
J. Marciak-Kozlowska, M. Kozlowski
|
Proca equation for laser pulses interaction with matter
|
8 pages
| null | null | null |
cond-mat.other
| null |
In this paper the interaction of ultrashort laser pulses with matter is
investigated. The scattering and potential motion of heat carriers, as well as
the external force are considered. It is shown that the heat transport is
described by the Proca equation. For thermal Heisenberg type relation V\tau ~
\hbar, (\tau is the relaxation time and V is the potential) the solution of the
Proca equation (PR) are the distortionless damped wave equation.
Key words: Ultrashort laser pulses; Quantum heat transport equation; Proca
thermal equation.
|
[{'version': 'v1', 'created': 'Fri, 21 Oct 2005 13:17:00 GMT'}]
|
2007-05-23
|
[array(['Marciak-Kozlowska', 'J.', ''], dtype=object)
array(['Kozlowski', 'M.', ''], dtype=object)]
|
19,122 |
1109.4982
|
Andrew Manion
|
Andrew Manion
|
A sign assignment in totally twisted Khovanov homology
|
12 pages; 5 figures
|
Algebr. Geom. Topol. 14 (2014) 753-767
|
10.2140/agt.2014.14.753
| null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We lift the characteristic-2 totally twisted Khovanov homology of Roberts and
Jaeger to a theory with integer coefficients. The result is a complex computing
reduced odd Khovanov homology for knots. This complex is equivalent to a
spanning-tree complex whose differential is explicit modulo a sign ambiguity
coming from the need to choose a sign assignment in the definition of odd
Khovanov homology.
|
[{'version': 'v1', 'created': 'Fri, 23 Sep 2011 00:54:30 GMT'}]
|
2014-10-01
|
[array(['Manion', 'Andrew', ''], dtype=object)]
|
19,123 |
1201.0122
|
Nikolai Kudryashov Alekseyevich
|
Nikolay A. Kudryashov and Dmitry I. Sinelshchikov
|
Exact solutions of equations for the Burgers hierarchy
| null |
Applied Mathematics and Computation, 2009, V. 215, P. 1293-1300
|
10.1016/j.amc.2009.06.010
| null |
nlin.SI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Some classes of the rational, periodic and solitary wave solutions for the
Burgers hierarchy are presented. The solutions for this hierarchy are obtained
by using the generalized Cole - Hopf transformation.
|
[{'version': 'v1', 'created': 'Fri, 30 Dec 2011 13:19:13 GMT'}]
|
2012-01-04
|
[array(['Kudryashov', 'Nikolay A.', ''], dtype=object)
array(['Sinelshchikov', 'Dmitry I.', ''], dtype=object)]
|
19,124 |
2205.12128
|
Yuci Han
|
Yuci Han, Alper Yilmaz
|
Learning to Drive Using Sparse Imitation Reinforcement Learning
| null | null | null | null |
cs.CV
|
http://creativecommons.org/publicdomain/zero/1.0/
|
In this paper, we propose Sparse Imitation Reinforcement Learning (SIRL), a
hybrid end-to-end control policy that combines the sparse expert driving
knowledge with reinforcement learning (RL) policy for autonomous driving (AD)
task in CARLA simulation environment. The sparse expert is designed based on
hand-crafted rules which is suboptimal but provides a risk-averse strategy by
enforcing experience for critical scenarios such as pedestrian and vehicle
avoidance, and traffic light detection. As it has been demonstrated, training a
RL agent from scratch is data-inefficient and time consuming particularly for
the urban driving task, due to the complexity of situations stemming from the
vast size of state space. Our SIRL strategy provides a solution to solve these
problems by fusing the output distribution of the sparse expert policy and the
RL policy to generate a composite driving policy. With the guidance of the
sparse expert during the early training stage, SIRL strategy accelerates the
training process and keeps the RL exploration from causing a catastrophe
outcome, and ensures safe exploration. To some extent, the SIRL agent is
imitating the driving expert's behavior. At the same time, it continuously
gains knowledge during training therefore it keeps making improvement beyond
the sparse expert, and can surpass both the sparse expert and a traditional RL
agent. We experimentally validate the efficacy of proposed SIRL approach in a
complex urban scenario within the CARLA simulator. Besides, we compare the SIRL
agent's performance for risk-averse exploration and high learning efficiency
with the traditional RL approach. We additionally demonstrate the SIRL agent's
generalization ability to transfer the driving skill to unseen environment.
|
[{'version': 'v1', 'created': 'Tue, 24 May 2022 15:03:11 GMT'}]
|
2022-05-25
|
[array(['Han', 'Yuci', ''], dtype=object)
array(['Yilmaz', 'Alper', ''], dtype=object)]
|
19,125 |
1905.09642
|
Enkhbold Bataa
|
Enkhbold Bataa and Joshua Wu
|
An Investigation of Transfer Learning-Based Sentiment Analysis in
Japanese
| null | null | null | null |
cs.CL cs.LG
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Text classification approaches have usually required task-specific model
architectures and huge labeled datasets. Recently, thanks to the rise of
text-based transfer learning techniques, it is possible to pre-train a language
model in an unsupervised manner and leverage them to perform effective on
downstream tasks. In this work we focus on Japanese and show the potential use
of transfer learning techniques in text classification. Specifically, we
perform binary and multi-class sentiment classification on the Rakuten product
review and Yahoo movie review datasets. We show that transfer learning-based
approaches perform better than task-specific models trained on 3 times as much
data. Furthermore, these approaches perform just as well for language modeling
pre-trained on only 1/30 of the data. We release our pre-trained models and
code as open source.
|
[{'version': 'v1', 'created': 'Thu, 23 May 2019 13:24:15 GMT'}
{'version': 'v2', 'created': 'Wed, 5 Jun 2019 02:07:41 GMT'}
{'version': 'v3', 'created': 'Fri, 7 Jun 2019 08:58:17 GMT'}]
|
2019-06-10
|
[array(['Bataa', 'Enkhbold', ''], dtype=object)
array(['Wu', 'Joshua', ''], dtype=object)]
|
19,126 |
1810.03614
|
Haeun Chung
|
Haeun Chung, A. N. Ramaprakash, Amitesh Omar, Swara Ravindranath,
Sabyasachi Chattopadhyay, Chaitanya V. Rajarshi, Pravin Khodade
|
DOTIFS: a new multi-IFU optical spectrograph for the 3.6-m Devasthal
optical telescope
|
8 pages, 6 figures, Conference Presentation at SPIE Astronomical
Telescopes + Instrumentation, 2014, Montr\'eal, Quebec, Canada
|
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for
Astronomy V, 91470V (18 July 2014)
|
10.1117/12.2053051
| null |
astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Devasthal Optical Telescope Integral Field Spectrograph (DOTIFS) is a new
multi-object Integral Field Spectrograph (IFS) being designed and fabricated by
the Inter-University Center for Astronomy and Astrophysics (IUCAA), Pune,
India, for the Cassegrain side port of the 3.6m Devasthal Optical Telescope,
(DOT) being constructed by the Aryabhatta Research Institute of Observational
Sciences (ARIES), Nainital. It is mainly designed to study the physics and
kinematics of the ionized gas, star formation and H II regions in the nearby
galaxies. It is a novel instrument in terms of multi-IFU, built in deployment
system, and high throughput. It consists of one magnifier, 16 integral field
units (IFUs), and 8 spectrographs. Each IFU is comprised of a microlens array
and optical fibers and has 7.4'' x 8.7'' field of view with 144 spaxel
elements, each sampling 0.8'' hexagonal aperture. The IFUs can be distributed
on the telescope side port over an 8' diameter focal plane by the deployment
system. Optical fibers deliver light from the IFUs to the spectrographs. Eight
identical, all refractive, dedicated spectrographs will produce 2,304 R~1800
spectra over 370-740nm wavelength range with a single exposure. Volume Phase
Holographic gratings are chosen to make smaller optics and get high throughput.
The total throughput of the instrument including the telescope is predicted as
27.5% on average. Observing techniques, data simulator and reduction software
are also under development. Currently, conceptual and baseline design review
has been done. Some of the components have already been procured. The
instrument is expected to see its first light in 2016.
|
[{'version': 'v1', 'created': 'Mon, 8 Oct 2018 18:00:02 GMT'}]
|
2018-10-10
|
[array(['Chung', 'Haeun', ''], dtype=object)
array(['Ramaprakash', 'A. N.', ''], dtype=object)
array(['Omar', 'Amitesh', ''], dtype=object)
array(['Ravindranath', 'Swara', ''], dtype=object)
array(['Chattopadhyay', 'Sabyasachi', ''], dtype=object)
array(['Rajarshi', 'Chaitanya V.', ''], dtype=object)
array(['Khodade', 'Pravin', ''], dtype=object)]
|
19,127 |
2002.07269
|
Yu Liu
|
Yu Liu, Jie Li, Qingsen Yan, Xia Yuan, Chunxia Zhao, Ian Reid and
Cesar Cadena
|
3D Gated Recurrent Fusion for Semantic Scene Completion
|
13 pages
| null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
This paper tackles the problem of data fusion in the semantic scene
completion (SSC) task, which can simultaneously deal with semantic labeling and
scene completion. RGB images contain texture details of the object(s) which are
vital for semantic scene understanding. Meanwhile, depth images capture
geometric clues of high relevance for shape completion. Using both RGB and
depth images can further boost the accuracy of SSC over employing one modality
in isolation. We propose a 3D gated recurrent fusion network (GRFNet), which
learns to adaptively select and fuse the relevant information from depth and
RGB by making use of the gate and memory modules. Based on the single-stage
fusion, we further propose a multi-stage fusion strategy, which could model the
correlations among different stages within the network. Extensive experiments
on two benchmark datasets demonstrate the superior performance and the
effectiveness of the proposed GRFNet for data fusion in SSC. Code will be made
available.
|
[{'version': 'v1', 'created': 'Mon, 17 Feb 2020 21:45:43 GMT'}]
|
2020-02-19
|
[array(['Liu', 'Yu', ''], dtype=object)
array(['Li', 'Jie', ''], dtype=object)
array(['Yan', 'Qingsen', ''], dtype=object)
array(['Yuan', 'Xia', ''], dtype=object)
array(['Zhao', 'Chunxia', ''], dtype=object)
array(['Reid', 'Ian', ''], dtype=object)
array(['Cadena', 'Cesar', ''], dtype=object)]
|
19,128 |
2110.14975
|
Thomas Bosman
|
T. O. S. J. Bosman (1 and 2), M. van Berkel (1), M. R. de Baar (1 and
2) ((1) DIFFER, (2) Eindhoven University of Technology)
|
Model-based electron density profile estimation and control, applied to
ITER
| null | null | null | null |
physics.plasm-ph cs.SY eess.SY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In contemporary magnetic confinement devices, the density distribution is
sensed with interferometers and actuated with feedback controlled gas injection
and open-loop pellet injection. This is at variance with the density control
for ITER and DEMO, that will depend mainly on pellet injection as an actuator
in feed-back control. This paper presents recent developments in state
estimation and control of the electron density profile for ITER using relevant
sensors and actuators. As a first step, Thomson scattering is included in an
existing dynamic state observer. Second, model predictive control is developed
as a strategy to regulate the density profile while avoiding limits associated
with the total density (Greenwald limit) or gradients in the density
distribution (e.g. neo-classical impurity transport). Simulations show that
high quality density profile estimation can be achieved with Thomson Scattering
and that the controller is capable of regulating the distribution as desired.
|
[{'version': 'v1', 'created': 'Thu, 28 Oct 2021 09:26:38 GMT'}]
|
2021-10-29
|
[array(['Bosman', 'T. O. S. J.', '', '1 and 2'], dtype=object)
array(['van Berkel', 'M.', '', 'DIFFER'], dtype=object)
array(['de Baar', 'M. R.', '', '1 and\n 2'], dtype=object)]
|
19,129 |
2206.06048
|
Saturnino Luz
|
Saturnino Luz, Masood Masoodian
|
Temporal and Spatial Elements in Interactive Epidemiological Maps
|
Presented at the Map-based Interfaces and Interactions (MAPII)
Workshop, at AVI'22
| null | null | null |
stat.ME cs.HC q-bio.PE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Maps have played an important role in epidemiology and public health since
the beginnings of these disciplines. With the advent of geographical
information systems and advanced information visualization techniques,
interactive maps have become essential tools for the analysis of geographical
patterns of disease incidence and prevalence, as well as communication of
public health knowledge, as dramatically illustrated by the proliferation of
web-based maps and disease surveillance ``dashboards'' during the COVID-19
pandemic. While such interactive maps are usually effective in supporting
static spatial analysis, support for spatial epidemiological visualization and
modelling involving distributed and dynamic data sources, and support for
analysis of temporal aspects of disease spread have proved more challenging.
Combining these two aspects can be crucial in applications of interactive maps
in epidemiology and public health work. In this paper, we discuss these issues
in the context of support for disease surveillance in remote regions, including
tools for distributed data collection, simulation and analysis, and enabling
multidisciplinary collaboration.
|
[{'version': 'v1', 'created': 'Mon, 13 Jun 2022 11:17:02 GMT'}]
|
2022-06-14
|
[array(['Luz', 'Saturnino', ''], dtype=object)
array(['Masoodian', 'Masood', ''], dtype=object)]
|
19,130 |
2011.02510
|
Nicol\'as Bernal Dr.
|
Nicol\'as Bernal, \'Oscar Zapata
|
Gravitational dark matter production: primordial black holes and UV
freeze-in
|
5 pages, 2 figures. V2: matches accepted version in PLB
| null |
10.1016/j.physletb.2021.136129
|
PI/UAN-2020-682FT
|
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Dark matter (DM) interacting only gravitationally with the standard model
could have been produced in the early universe by Hawking evaporation of
primordial black holes (PBH). This mechanism is viable in a large range of DM
mass, spanning up to the Planck scale. However, DM is also unavoidably produced
by the irreducible UV gravitational freeze-in. We show that the latter
mechanism sets strong bounds, excluding large regions of the parameter space
favored by PBH production.
|
[{'version': 'v1', 'created': 'Wed, 4 Nov 2020 19:23:37 GMT'}
{'version': 'v2', 'created': 'Thu, 4 Feb 2021 13:54:52 GMT'}]
|
2021-02-10
|
[array(['Bernal', 'Nicolás', ''], dtype=object)
array(['Zapata', 'Óscar', ''], dtype=object)]
|
19,131 |
1605.08765
|
Ivan Shevchenko
|
Ivan I. Shevchenko
|
On the recurrence and Lyapunov time scales of the motion near the chaos
border
|
16 pages, 2 figures
|
Physics Letters A, v. 241, pp. 53-60 (1998)
|
10.1016/S0375-9601(98)00093-0
| null |
nlin.CD astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Conditions for the emergence of a statistical relationship between $T_r$, the
chaotic transport (recurrence) time, and $T_L$, the local Lyapunov time (the
inverse of the numerically measured largest Lyapunov characteristic exponent),
are considered for the motion inside the chaotic layer around the separatrix of
a nonlinear resonance. When numerical values of the Lyapunov exponents are
measured on a time interval not greater than $T_r$, the relationship is shown
to resemble the quadratic one. This tentatively explains numerical results
presented in the literature.
|
[{'version': 'v1', 'created': 'Fri, 27 May 2016 19:33:09 GMT'}]
|
2016-05-30
|
[array(['Shevchenko', 'Ivan I.', ''], dtype=object)]
|
19,132 |
1505.08115
|
Per-Gunnar Martinsson
|
P.G. Martinsson
|
Blocked rank-revealing QR factorizations: How randomized sampling can be
used to avoid single-vector pivoting
| null | null | null | null |
math.NA cs.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Given a matrix $A$ of size $m\times n$, the manuscript describes a algorithm
for computing a QR factorization $AP=QR$ where $P$ is a permutation matrix, $Q$
is orthonormal, and $R$ is upper triangular. The algorithm is blocked, to allow
it to be implemented efficiently. The need for single vector pivoting in
classical algorithms for computing QR factorizations is avoided by the use of
randomized sampling to find blocks of pivot vectors at once. The advantage of
blocking becomes particularly pronounced when $A$ is very large, and possibly
stored out-of-core, or on a distributed memory machine. The manuscript also
describes a generalization of the QR factorization that allows $P$ to be a
general orthonormal matrix. In this setting, one can at moderate cost compute a
\textit{rank-revealing} factorization where the mass of $R$ is concentrated to
the diagonal entries. Moreover, the diagonal entries of $R$ closely approximate
the singular values of $A$. The algorithms described have asymptotic flop count
$O(m\,n\,\min(m,n))$, just like classical deterministic methods. The scaling
constant is slightly higher than those of classical techniques, but this is
more than made up for by reduced communication and the ability to block the
computation.
|
[{'version': 'v1', 'created': 'Fri, 29 May 2015 17:31:35 GMT'}]
|
2015-06-01
|
[array(['Martinsson', 'P. G.', ''], dtype=object)]
|
19,133 |
1302.2467
|
Bichir C\u{a}t\u{a}lin-Liviu
|
C\u{a}t\u{a}lin Liviu Bichir, Adelina Georgescu, Bogdan Amuzescu,
Gheorghe Nistor, Marin Popescu, Maria-Luiza Flonta, Alexandru Dan Corlan,
Istvan Svab
|
Limit points and Hopf bifurcation points for a one - parameter dynamical
system associated to the Luo - Rudy I model
|
Preprint from October 2010
| null | null | null |
math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A one - parameter dynamical system is associated to the mathematical problem
governing the membrane excitability of a ventricular cardiomyocyte, according
to the Luo-Rudy I model. An algorithm used to construct the equilibrium curve
is presented. Some test functions are used in order to locate limit points and
Hopf bifurcation points. Two extended systems allow to calculate these points.
The numerical results are presented in a bifurcation diagram.
|
[{'version': 'v1', 'created': 'Mon, 11 Feb 2013 12:57:40 GMT'}]
|
2013-02-12
|
[array(['Bichir', 'Cătălin Liviu', ''], dtype=object)
array(['Georgescu', 'Adelina', ''], dtype=object)
array(['Amuzescu', 'Bogdan', ''], dtype=object)
array(['Nistor', 'Gheorghe', ''], dtype=object)
array(['Popescu', 'Marin', ''], dtype=object)
array(['Flonta', 'Maria-Luiza', ''], dtype=object)
array(['Corlan', 'Alexandru Dan', ''], dtype=object)
array(['Svab', 'Istvan', ''], dtype=object)]
|
19,134 |
0903.1368
|
Vladimir Tkachev G.
|
Vladimir V. Sergienko, Vladimir G. Tkachev
|
Double-periodic maximal surfaces with singularities
|
An full version in English of "Doubly periodic maximal surfaces with
singularities" (in Russian). Proceedings on Analysis and Geometry, 571-584,
Izdat. Ross. Akad. Nauk Sib. Otd. Inst. Mat., Novosibirsk, 2000
|
Siberian Adv. Math., 12 (2002), no. 1, 77-91
| null | null |
math.DG math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct and study a family of double-periodic almost entire solutions of
the maximal surface equation. The solutions are parameterized by a submanifold
of $3\times 3$-matrices (the so-called generating matrices). We show that the
constructed solutions are either space-like or of mixed type with the
light-cone type isolated singularities.
|
[{'version': 'v1', 'created': 'Sat, 7 Mar 2009 20:55:17 GMT'}]
|
2009-03-10
|
[array(['Sergienko', 'Vladimir V.', ''], dtype=object)
array(['Tkachev', 'Vladimir G.', ''], dtype=object)]
|
19,135 |
1208.2446
|
Gavin Brown
|
Gavin Brown and Miles Reid
|
Diptych varieties. I
|
50 pages. The webpage at www-staff.lboro.ac.uk/~magdb/aflip.html
contains links to auxiliary material
| null |
10.1112/plms/pdt028
| null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a new class of affine Gorenstein 6-folds obtained by smoothing the
1-dimensional singular locus of a reducible affine toric surface; their
existence is established using explicit methods in toric geometry and serial
use of Kustin-Miller Gorenstein unprojection. These varieties have applications
as key varieties in constructing other varieties, including local models of
Mori flips of Type A.
|
[{'version': 'v1', 'created': 'Sun, 12 Aug 2012 18:04:08 GMT'}]
|
2014-02-26
|
[array(['Brown', 'Gavin', ''], dtype=object)
array(['Reid', 'Miles', ''], dtype=object)]
|
19,136 |
2004.14133
|
Huazhu Fu
|
Deng-Ping Fan, Tao Zhou, Ge-Peng Ji, Yi Zhou, Geng Chen, Huazhu Fu,
Jianbing Shen, Ling Shao
|
Inf-Net: Automatic COVID-19 Lung Infection Segmentation from CT Images
|
To appear in IEEE TMI. The code is released in:
https://github.com/DengPingFan/Inf-Net
| null | null | null |
eess.IV cs.CV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Coronavirus Disease 2019 (COVID-19) spread globally in early 2020, causing
the world to face an existential health crisis. Automated detection of lung
infections from computed tomography (CT) images offers a great potential to
augment the traditional healthcare strategy for tackling COVID-19. However,
segmenting infected regions from CT slices faces several challenges, including
high variation in infection characteristics, and low intensity contrast between
infections and normal tissues. Further, collecting a large amount of data is
impractical within a short time period, inhibiting the training of a deep
model. To address these challenges, a novel COVID-19 Lung Infection
Segmentation Deep Network (Inf-Net) is proposed to automatically identify
infected regions from chest CT slices. In our Inf-Net, a parallel partial
decoder is used to aggregate the high-level features and generate a global map.
Then, the implicit reverse attention and explicit edge-attention are utilized
to model the boundaries and enhance the representations. Moreover, to alleviate
the shortage of labeled data, we present a semi-supervised segmentation
framework based on a randomly selected propagation strategy, which only
requires a few labeled images and leverages primarily unlabeled data. Our
semi-supervised framework can improve the learning ability and achieve a higher
performance. Extensive experiments on our COVID-SemiSeg and real CT volumes
demonstrate that the proposed Inf-Net outperforms most cutting-edge
segmentation models and advances the state-of-the-art performance.
|
[{'version': 'v1', 'created': 'Wed, 22 Apr 2020 07:30:56 GMT'}
{'version': 'v2', 'created': 'Fri, 1 May 2020 13:01:30 GMT'}
{'version': 'v3', 'created': 'Sun, 17 May 2020 19:40:13 GMT'}
{'version': 'v4', 'created': 'Thu, 21 May 2020 18:23:37 GMT'}]
|
2020-05-25
|
[array(['Fan', 'Deng-Ping', ''], dtype=object)
array(['Zhou', 'Tao', ''], dtype=object)
array(['Ji', 'Ge-Peng', ''], dtype=object)
array(['Zhou', 'Yi', ''], dtype=object)
array(['Chen', 'Geng', ''], dtype=object)
array(['Fu', 'Huazhu', ''], dtype=object)
array(['Shen', 'Jianbing', ''], dtype=object)
array(['Shao', 'Ling', ''], dtype=object)]
|
19,137 |
1910.01275
|
Sicong Tang
|
Sicong Tang, Feitong Tan, Kelvin Cheng, Zhaoyang Li, Siyu Zhu, Ping
Tan
|
A Neural Network for Detailed Human Depth Estimation from a Single Image
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents a neural network to estimate a detailed depth map of the
foreground human in a single RGB image. The result captures geometry details
such as cloth wrinkles, which are important in visualization applications. To
achieve this goal, we separate the depth map into a smooth base shape and a
residual detail shape and design a network with two branches to regress them
respectively. We design a training strategy to ensure both base and detail
shapes can be faithfully learned by the corresponding network branches.
Furthermore, we introduce a novel network layer to fuse a rough depth map and
surface normals to further improve the final result. Quantitative comparison
with fused `ground truth' captured by real depth cameras and qualitative
examples on unconstrained Internet images demonstrate the strength of the
proposed method. The code is available at
https://github.com/sfu-gruvi-3dv/deep_human.
|
[{'version': 'v1', 'created': 'Thu, 3 Oct 2019 01:54:22 GMT'}
{'version': 'v2', 'created': 'Tue, 24 Dec 2019 08:35:33 GMT'}]
|
2019-12-25
|
[array(['Tang', 'Sicong', ''], dtype=object)
array(['Tan', 'Feitong', ''], dtype=object)
array(['Cheng', 'Kelvin', ''], dtype=object)
array(['Li', 'Zhaoyang', ''], dtype=object)
array(['Zhu', 'Siyu', ''], dtype=object)
array(['Tan', 'Ping', ''], dtype=object)]
|
19,138 |
1703.00381
|
Junier Oliva
|
Junier B. Oliva, Barnabas Poczos, Jeff Schneider
|
The Statistical Recurrent Unit
| null | null | null | null |
cs.LG cs.AI stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Sophisticated gated recurrent neural network architectures like LSTMs and
GRUs have been shown to be highly effective in a myriad of applications. We
develop an un-gated unit, the statistical recurrent unit (SRU), that is able to
learn long term dependencies in data by only keeping moving averages of
statistics. The SRU's architecture is simple, un-gated, and contains a
comparable number of parameters to LSTMs; yet, SRUs perform favorably to more
sophisticated LSTM and GRU alternatives, often outperforming one or both in
various tasks. We show the efficacy of SRUs as compared to LSTMs and GRUs in an
unbiased manner by optimizing respective architectures' hyperparameters in a
Bayesian optimization scheme for both synthetic and real-world tasks.
|
[{'version': 'v1', 'created': 'Wed, 1 Mar 2017 16:50:54 GMT'}]
|
2017-03-02
|
[array(['Oliva', 'Junier B.', ''], dtype=object)
array(['Poczos', 'Barnabas', ''], dtype=object)
array(['Schneider', 'Jeff', ''], dtype=object)]
|
19,139 |
2306.02737
|
L\'aszl\'o Gyarmati
|
L\'aszl\'o Gyarmati, \'Eva Orb\'an-Mih\'alyk\'o, Csaba Mih\'alyk\'o
|
Comparative analysis of the existence and uniqueness conditions of
parameter estimation in paired comparison models
| null | null | null | null |
math.ST math.OC stat.TH
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
In this paper paired comparison models with stochastic background are
investigated. We focus on the models which allow three options for choice and
the parameters are estimated by maximum likelihood method. The existence and
uniqueness of the estimator is a key issue of the evaluation. In the case of
two options, a necessary and sufficient condition is given by Ford in the
Bradley-Terry model. We generalize this statement for the set of strictly
log-concave distribution. Although in the case of three options necessary and
sufficient condition is not known, there are two different sufficient
conditions which are formulated in the literature. In this paper we generalize
them, moreover we compare these conditions. Their capacities to indicate the
existence of the maximum are analyzed by a large number of computer
simulations. These simulations support that the new condition indicates the
existence of the maximum much more frequently then the previously known ones,
|
[{'version': 'v1', 'created': 'Mon, 5 Jun 2023 09:33:00 GMT'}]
|
2023-06-06
|
[array(['Gyarmati', 'László', ''], dtype=object)
array(['Orbán-Mihálykó', 'Éva', ''], dtype=object)
array(['Mihálykó', 'Csaba', ''], dtype=object)]
|
19,140 |
1205.3675
|
Josef Pradler
|
Josef Pradler
|
On the Cosmic Ray Muon Hypothesis for DAMA
|
6 pages, 3 figures; 47th Rencontres de Moriond, Electroweak session;
includes new comments on recent works
| null | null | null |
hep-ph astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The DAMA dark matter search experiment observes a statistically significant
percent-level variation of its low-energy count rate with a period of one year.
In this note we recall some of the arguments which challenge the hypothesis
that the cosmic ray induced underground muon flux can be the origin of the
modulation. In addition, we provide new comments on recent works on this
subject.
|
[{'version': 'v1', 'created': 'Wed, 16 May 2012 13:41:55 GMT'}]
|
2012-05-17
|
[array(['Pradler', 'Josef', ''], dtype=object)]
|
19,141 |
1008.0166
|
Victor Snaith Prof
|
Robert Bruner, Khairia Mira, Laura Stanley and Victor Snaith
|
Ossa's Theorem via the Kunneth formula
|
9 pages
| null | null |
0085362
|
math.AT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $p$ be a prime. We calculate the connective unitary K-theory of the smash
product of two copies of the classifying space for the cyclic group of order
$p$, using a K\"{u}nneth formula short exact sequence. As a corollary, using
the Bott exact sequence and the mod $2$ Hurewicz homomorphism we calculate the
connective orthogonal K-theory of the smash product of two copies of the
classifying space for the cyclic group of order two.
|
[{'version': 'v1', 'created': 'Sun, 1 Aug 2010 11:16:27 GMT'}]
|
2010-08-03
|
[array(['Bruner', 'Robert', ''], dtype=object)
array(['Mira', 'Khairia', ''], dtype=object)
array(['Stanley', 'Laura', ''], dtype=object)
array(['Snaith', 'Victor', ''], dtype=object)]
|
19,142 |
1701.07658
|
Marko Tadic
|
Marko Tadic
|
On unitarity of some representatations of classical p-adic groups I
|
This preprint is merged with the preprint "On unitarity of some
representations of classical p-adic groups II " ID 1701.07662, and published
under new title "On unitarizability in the case of classical p-adic groups"
ID 1709.00626
| null | null | null |
math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the case of p-adic general linear groups, each irreducible representation
is parabolically induced by a tensor product of irreducible representations
supported by cuspidal lines. One gets in this way a parameterization of the
irreducible representations of p-adic general linear groups by irreducible
representations supported by cuspidal lines. It is obvious that in this
correspondence an irreducible representation of a p-adic general linear group
is unitarizable if and only if all the corresponding irreducible
representations supported by cuspidal lines are unitarizable. C. Jantzen has
defined an analogue of such correspondence for irreducible representations of
classical p-adic groups. It would have interesting consequences if one would
know that the unitarizability is also preserved in this case. A purpose of this
paper and its sequel, is to give some very limited support for possibility of
such preservation of the unitarizability. More precisely, we show that if we
have an irreducible unitarizable representation $\pi$ of a classical p-adic
group whose one attached representation $\pi_L$ supported by a cuspidal line
$L$ has the same infinitesimal character as the generalized Steinberg
representation supported by that cuspidal line, then $\pi_L$ is unitarizable.
|
[{'version': 'v1', 'created': 'Thu, 26 Jan 2017 11:22:48 GMT'}
{'version': 'v2', 'created': 'Wed, 28 Oct 2020 22:36:34 GMT'}]
|
2020-10-30
|
[array(['Tadic', 'Marko', ''], dtype=object)]
|
19,143 |
2303.10089
|
Weiyi Zhang
|
Weiyi Zhang, Yushi Guo, Liting Niu, Peijun Li, Chun Zhang, Zeyu Wan,
Jiaxiang Yan, Fasih Ud Din Farrukh, Debing Zhang
|
LP-SLAM: Language-Perceptive RGB-D SLAM system based on Large Language
Model
|
12 pages, 16 figures
| null | null | null |
cs.RO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Simultaneous localization and mapping (SLAM) is a critical technology that
enables autonomous robots to be aware of their surrounding environment. With
the development of deep learning, SLAM systems can achieve a higher level of
perception of the environment, including the semantic and text levels. However,
current works are limited in their ability to achieve a natural-language level
of perception of the world. To address this limitation, we propose LP-SLAM, the
first language-perceptive SLAM system that leverages large language models
(LLMs). LP-SLAM has two major features: (a) it can detect text in the scene and
determine whether it represents a landmark to be stored during the tracking and
mapping phase, and (b) it can understand natural language input from humans and
provide guidance based on the generated map. We illustrated three usages of the
LLM in the system including text cluster, landmark judgment, and natural
language navigation. Our proposed system represents an advancement in the field
of LLMs based SLAM and opens up new possibilities for autonomous robots to
interact with their environment in a more natural and intuitive way.
|
[{'version': 'v1', 'created': 'Fri, 17 Mar 2023 16:12:22 GMT'}]
|
2023-03-20
|
[array(['Zhang', 'Weiyi', ''], dtype=object)
array(['Guo', 'Yushi', ''], dtype=object)
array(['Niu', 'Liting', ''], dtype=object)
array(['Li', 'Peijun', ''], dtype=object)
array(['Zhang', 'Chun', ''], dtype=object)
array(['Wan', 'Zeyu', ''], dtype=object)
array(['Yan', 'Jiaxiang', ''], dtype=object)
array(['Farrukh', 'Fasih Ud Din', ''], dtype=object)
array(['Zhang', 'Debing', ''], dtype=object)]
|
19,144 |
2211.12155
|
Julien Laux
|
Alexey Kivel, Julien Laux, Felix Yu
|
Axion Couplings in Gauged $U(1)'$ Extensions of the Standard Model
|
33 pages, 7 figures
| null |
10.1007/JHEP03(2023)078
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We explore the effective theory of an axion in a gauged baryon number
symmetry extension of the Standard Model (SM), where the axion is realized from
a Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) model construction. Integrating out
the anomalons realizes a pattern of effective Wilson coefficients reflecting
the factorization between the anomalous Peccei-Quinn and gauged baryon number
symmetries. We construct and analyze the chiral transformation invariance of
the axion effective theory, accounting for possible flavor-violating axion
couplings. We calculate and study the unique phenomenology of the axion and
$Z'$ boson, and we present the current collider limits on these particles in
the $\{m_{Z'}, g_B\}$, $\{m_a, G_{a \gamma \gamma} \}$, and $\{m_a, f_a^{-1}\}$
planes.
|
[{'version': 'v1', 'created': 'Tue, 22 Nov 2022 10:34:56 GMT'}]
|
2023-04-05
|
[array(['Kivel', 'Alexey', ''], dtype=object)
array(['Laux', 'Julien', ''], dtype=object)
array(['Yu', 'Felix', ''], dtype=object)]
|
19,145 |
2301.06097
|
Rafael Nunes
|
Armando Bernui, Eleonora Di Valentino, William Giar\`e, Suresh Kumar,
Rafael C. Nunes
|
Exploring the $H_0$ tension and the evidence of dark sector interaction
from 2D BAO measurements
|
7 Pages, 2 Figures, 2 Tables. Matches the version published in PRD
| null |
10.1103/PhysRevD.107.103531
|
Phys. Rev. D 107 (2023) 103531
|
astro-ph.CO gr-qc hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We explore observational constraints on a cosmological model with an
interaction between dark energy (DE) and dark matter (DM), using a compilation
of 15 measurements of the 2D BAO (i.e., transversal) scale in combination with
Planck-CMB data, to explore the parametric space of a class of interacting DE
models. We find that 2D BAO measurements can generate different observational
constraints compared to the traditional approach of studying the matter
clustering in the 3D BAO measurements. Contrary to the observations for the
$\Lambda$CDM and IDE models when analyzed with Planck-CMB + 3D BAO data, we
note that Planck-CMB + 2D BAO data favor high values of the Hubble constant
$H_0$. From the joint analysis with Planck-CMB + 2D BAO + Gaussian prior on
$H_0$, we find $H_0 = 73.4 \pm 0.88$ km/s/Mpc. We conclude that the $H_0$
tension is solved in the IDE model with strong statistical evidence (more than
3$\sigma$) for the IDE cosmologies.
|
[{'version': 'v1', 'created': 'Sun, 15 Jan 2023 13:39:02 GMT'}
{'version': 'v2', 'created': 'Thu, 1 Jun 2023 13:25:22 GMT'}]
|
2023-06-02
|
[array(['Bernui', 'Armando', ''], dtype=object)
array(['Di Valentino', 'Eleonora', ''], dtype=object)
array(['Giarè', 'William', ''], dtype=object)
array(['Kumar', 'Suresh', ''], dtype=object)
array(['Nunes', 'Rafael C.', ''], dtype=object)]
|
19,146 |
2109.11035
|
Ian Hogeboom-Burr
|
Ian Hogeboom-Burr, Serdar Y\"uksel
|
Continuity Properties of Value Functions in Information Structures for
Zero-Sum and General Games and Stochastic Teams
|
To appear in the SIAM Journal on Control and Optimization. A short
conference version appeared at the 2021 Conference on Decision and Control
| null | null | null |
math.OC
|
http://creativecommons.org/licenses/by/4.0/
|
We study continuity properties of stochastic game problems with respect to
various topologies on information structures, defined as probability measures
characterizing a game. We will establish continuity properties of the value
function under total variation, setwise, and weak convergence of information
structures. Our analysis reveals that the value function for a bounded game is
continuous under total variation convergence of information structures in both
zero-sum games and team problems. Continuity may fail to hold under setwise or
weak convergence of information structures, however, the value function
exhibits upper semicontinuity properties under weak and setwise convergence of
information structures for team problems, and upper or lower semicontinuity
properties hold for zero-sum games when such convergence is through a
Blackwell-garbled sequence of information structures. If the individual
channels are independent, fixed, and satisfy a total variation continuity
condition, then the value functions are continuous under weak convergence of
priors. We finally show that value functions for players may not be continuous
even under total variation convergence of information structures in general
non-zero-sum games.
|
[{'version': 'v1', 'created': 'Wed, 22 Sep 2021 20:50:02 GMT'}
{'version': 'v2', 'created': 'Tue, 1 Nov 2022 02:54:54 GMT'}]
|
2022-11-02
|
[array(['Hogeboom-Burr', 'Ian', ''], dtype=object)
array(['Yüksel', 'Serdar', ''], dtype=object)]
|
19,147 |
hep-th/9211045
| null |
F.Ferrari
|
Free and Interacting 2-D Maxwell Field Theory on Conformally Flat Space
Times
|
22 pages, LMU-TPW 92-8, (plain TeX)
|
Class.Quant.Grav.10:1065-1082,1993
|
10.1088/0264-9381/10/6/005
| null |
hep-th
| null |
The free Maxwell field theory is quantized in the Lorentz gauge on a two
dimensional manifold $M$ with conformally flat background metric. It is shown
that in this gauge the theory is equivalent, at least at the classical level,
to a biharmonic version of the bosonic string theory. This equivalence is
exploited in order to construct in details the propagator of the Maxwell field
theory on $M$. The expectation values of the Wilson loops are computed. A
trivial result is obtained confirming in the Lorentz gauge previous
calculations. Finally the interacting case is briefly discussed taking the
Schwinger model as an example. The two and three point functions of the
Schwinger model are explicitly derived at the lowest order on a Riemann
surface.
|
[{'version': 'v1', 'created': 'Tue, 10 Nov 1992 19:42:22 GMT'}]
|
2010-04-06
|
[array(['Ferrari', 'F.', ''], dtype=object)]
|
19,148 |
1310.8577
|
Tiffany Meshkat
|
T. Meshkat, M. Kenworthy, S. P. Quanz, A. Amara
|
Optimized Principal Component Analysis on Coronagraphic Images of the
Fomalhaut System
|
Accepted for publication in ApJ, 7 pages, 9 figures
| null |
10.1088/0004-637X/780/1/17
| null |
astro-ph.EP astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the results of a study to optimize the principal component
analysis (PCA) algorithm for planet detection, a new algorithm complementing
ADI and LOCI for increasing the contrast achievable next to a bright star. The
stellar PSF is constructed by removing linear combinations of principal
components, allowing the flux from an extrasolar planet to shine through. The
number of principal components used determines how well the stellar PSF is
globally modelled. Using more principal components may decrease the number of
speckles in the final image, but also increases the background noise. We apply
PCA to Fomalhaut VLT NaCo images acquired at 4.05 micron with an apodized phase
plate. We do not detect any companions, with a model dependent upper mass limit
of 13-18 M_Jup from 4-10 AU. PCA achieves greater sensitivity than the LOCI
algorithm for the Fomalhaut coronagraphic data by up to 1 magnitude. We make
several adaptations to the PCA code and determine which of these prove the most
effective at maximizing the signal-to-noise from a planet very close to its
parent star. We demonstrate that optimizing the number of principal components
used in PCA proves most effective for pulling out a planet signal.
|
[{'version': 'v1', 'created': 'Thu, 31 Oct 2013 16:29:24 GMT'}]
|
2015-06-17
|
[array(['Meshkat', 'T.', ''], dtype=object)
array(['Kenworthy', 'M.', ''], dtype=object)
array(['Quanz', 'S. P.', ''], dtype=object)
array(['Amara', 'A.', ''], dtype=object)]
|
19,149 |
gr-qc/0111048
|
Serge Winitzki
|
Serge Winitzki
|
The eternal fractal in the universe
|
Conversion to RevTeX4; minor changes; version accepted by Phys. Rev.
D
|
Phys.Rev. D65 (2002) 083506
|
10.1103/PhysRevD.65.083506
| null |
gr-qc astro-ph
| null |
Models of eternal inflation predict a stochastic self-similar geometry of the
universe at very large scales and allow existence of points that never
thermalize. I explore the fractal geometry of the resulting spacetime, using
coordinate-independent quantities. The formalism of stochastic inflation can be
used to obtain the fractal dimension of the set of eternally inflating points
(the ``eternal fractal''). I also derive a nonlinear branching diffusion
equation describing global properties of the eternal set and the probability to
realize eternal inflation. I show gauge invariance of the condition for
presence of eternal inflation. Finally, I consider the question of whether all
thermalized regions merge into one connected domain. Fractal dimension of the
eternal set provides a (weak) sufficient condition for merging.
|
[{'version': 'v1', 'created': 'Thu, 15 Nov 2001 20:50:15 GMT'}
{'version': 'v2', 'created': 'Tue, 8 Jan 2002 18:07:09 GMT'}]
|
2016-08-31
|
[array(['Winitzki', 'Serge', ''], dtype=object)]
|
19,150 |
1107.3858
|
Chris Kelso
|
Dan Hooper and Chris Kelso
|
Implications of a Large $B_s \rightarrow \mu^+ \mu^-$ Branching Fraction
for the Minimal Supersymmetric Standard Model
|
4 pages, 2 figures
| null |
10.1103/PhysRevD.85.094014
|
FERMILAB-PUB-11-332-A
|
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Very recently, the CDF Collaboration reported the first non-zero measurement
of the $B_s \rightarrow \mu^+ \mu^-$ branching fraction. The central value of
this measurement is more than 5 times of that predicted in the Standard Model
and, if confirmed, would indicate the existence of new physics. We consider the
implications of this measurement for the specific case of the Minimal
Supersymmetric Standard Model (MSSM), and find that it requires large values of
$\tan \beta$ ($\gsim 30$) and favors moderate values for the masses of the
heavy higgs bosons ($m_A, m_H \sim 300-1200$ GeV). We also discuss the
implications of this measurement for neutralino dark matter, finding that
(within the MSSM) regions of parameter space in which the lightest neutralino
can efficiently annihilate through the pseudoscalar higgs resonance (the
$A$-funnel region) are favored.
|
[{'version': 'v1', 'created': 'Tue, 19 Jul 2011 22:29:26 GMT'}]
|
2013-05-30
|
[array(['Hooper', 'Dan', ''], dtype=object)
array(['Kelso', 'Chris', ''], dtype=object)]
|
19,151 |
2201.11516
|
Gereltsetseg Altangerel Ms
|
Gereltsetseg Altangerel, Tejfel M\'at\'e
|
Survey on some optimization possibilities for data plane applications
|
Keywords: Data plane, load balancing, in-network caching, in-network
computing, in-network data aggregation, INT
|
10th International conference on Networks and Communications(NECO
2021)
|
10.5121/csit.2021.111807
| null |
cs.NI
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
By programming both the data plane and the control plane, network operators
can customize their networks based on their needs, regardless of the hardware
manufacturer. Control plane programming, a major component of the SDN (Software
Defined Network) concept, has been developed for more than 10 years and
successfully implemented in real networks. Efforts to develop reconfigurable
data planes and high-level network programming languages make it truly possible
to program data planes. Therefore, the programmable data planes and SDNs offer
great flexibility in network customization, allowing many innovations to be
introduced on the network. The general focus of research on the data plane is
data-plane abstractions, languages and compilers, data plane algorithms, and
applications. This paper outlines some emerging applications on the data plane
and offers opportunities for further improvement and optimization.
|
[{'version': 'v1', 'created': 'Mon, 29 Nov 2021 19:16:01 GMT'}]
|
2022-01-28
|
[array(['Altangerel', 'Gereltsetseg', ''], dtype=object)
array(['Máté', 'Tejfel', ''], dtype=object)]
|
19,152 |
1909.00449
|
Alberto Verga
|
Alberto D. Verga and Ricardo Gabriel Elias
|
Thermal state entanglement entropy on a quantum graph
|
7 pages, 4 figures
|
Phys. Rev. E 100, 062137 (2019)
|
10.1103/PhysRevE.100.062137
| null |
quant-ph
|
http://creativecommons.org/licenses/by/4.0/
|
A particle jumps between the nodes of a graph interacting with local spins.
We show that the entanglement entropy of the particle with the spin network is
related to the length of the minimum cycle basis. The structure of the thermal
state is reminiscent to the string-net of spin liquids.
|
[{'version': 'v1', 'created': 'Sun, 1 Sep 2019 18:59:11 GMT'}]
|
2020-01-01
|
[array(['Verga', 'Alberto D.', ''], dtype=object)
array(['Elias', 'Ricardo Gabriel', ''], dtype=object)]
|
19,153 |
2201.06567
|
Philipp Haindl
|
Philipp Haindl and Reinhold Pl\"osch
|
Tailoring Stakeholder Interests to Task-Oriented Functional Requirements
|
15 pages, 9 figures, 1 table
| null |
10.13140/RG.2.2.16632.16641
| null |
cs.SE
|
http://creativecommons.org/licenses/by/4.0/
|
Without a specific functional context, non-functional requirements can only
be approached as cross-cutting concerns and treated uniformly across all
features of an application. This neglects, however, the heterogeneity of
non-functional requirements that arises from stakeholder interests and the
distinct functional scopes of software systems, which mutually influence how
these non-functional requirements have to be satisfied. Earlier studies showed
that the different types and objectives of non-functional requirements result
in either vague or unbalanced specification of non-functional requirements. We
propose a task analytic approach for eliciting and modeling user tasks to
approach the stakeholders' pursued interests towards the software product.
Stakeholder interests are structurally related to user tasks and each interest
can be specified individually as a constraint of a specific user task. These
constraints support DevOps teams with important guidance on how the interest of
the stakeholder can be satisfied in the software lifecycle sufficiently. We
propose a structured approach, intertwining task-oriented functional
requirements with non-functional stakeholder interests to specify constraints
on the level of user tasks. We also present results of a case study with domain
experts, which reveals that our task modeling and interest-tailoring method
increases the comprehensibility of non-functional requirements as well as their
impact on the functional requirements, i.e., the users' tasks.
|
[{'version': 'v1', 'created': 'Mon, 17 Jan 2022 18:41:47 GMT'}]
|
2022-01-21
|
[array(['Haindl', 'Philipp', ''], dtype=object)
array(['Plösch', 'Reinhold', ''], dtype=object)]
|
19,154 |
1009.3982
|
EPTCS
|
Peter Csaba \"Olveczky (University of Oslo)
|
Proceedings First International Workshop on Rewriting Techniques for
Real-Time Systems
| null |
EPTCS 36, 2010
|
10.4204/EPTCS.36
| null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This volume contains the proceedings of the First International Workshop on
Rewriting Techniques for Real-Time Systems (RTRTS 2010), held in Longyearbyen,
Spitsbergen, on April 6-9, 2010.
The aim of the workshop is to bring together researchers with an interest in
the use of rewriting-based techniques (including rewriting logic) and tools for
the modeling, analysis, and/or implementation of real-time and hybrid systems,
and to give them the opportunity to present their recent works, discuss future
research directions, and exchange ideas. The topics of the workshop comprise,
but are not limited to: methods and tools supporting rewriting-based modeling
and analysis of real-time and hybrid systems, and extensions of such systems;
use of rewriting techniques to provide rigorous support for model-based
software engineering of timed systems; applications and case studies; and
comparison with other formalisms and tools.
|
[{'version': 'v1', 'created': 'Tue, 21 Sep 2010 02:19:53 GMT'}]
|
2010-09-22
|
[array(['Ölveczky', 'Peter Csaba', '', 'University of Oslo'], dtype=object)]
|
19,155 |
2207.00325
|
Xiao Guo
|
Xiao Guo, Youjun Lu (NAOC, UCAS)
|
Probing the nature of dark matter via gravitational waves lensed by
small dark matter halos
|
12 pages, 10 figures, accepted for publication in PRD
| null |
10.1103/PhysRevD.106.023018
| null |
astro-ph.CO gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Dark matter (DM) occupies the majority of matter content in the universe and
is probably cold (CDM). However, modifications to the standard CDM model may be
required by the small-scale observations, and DM may be self-interacting (SIDM)
or warm (WDM). Here we show that the diffractive lensing of gravitational waves
(GWs) from binary black hole mergers by small halos ($\sim10^3-10^6M_\odot$;
mini-halos) may serve as a clean probe to the nature of DM, free from the
contamination of baryonic processes in the DM studies based on dwarf/satellite
galaxies. The expected lensed GW signals and event rates resulting from CDM,
WDM, and SIDM models are significantly different from each other, because of
the differences in halo density profiles and abundances predicted by these
models. We estimate the detection rates of such lensed GW events for a number
of current and future GW detectors, such as the Laser Interferometer
Gravitational Observatories (LIGO), the Einstein Telescope (ET), the Cosmic
Explorer (CE), Gravitational-wave Lunar Observatory for Cosmology (GLOC), the
Deci-Hertz Interferometer Gravitational Wave Observatory (DECIGO), and the Big
Bang Observer (BBO). We find that GLOC may detect one such events per year
assuming the CDM model, DECIGO (BBO) may detect more than several (hundreds of)
such events per year, by assuming the CDM, WDM (with mass $>30$\,keV) or SIDM
model, suggesting that the DM nature may be strongly constrained by DECIGO and
BBO via the detection of diffractive lensed GW events by mini-halos. Other GW
detectors are unlikely to detect a significant number of such events within a
limited observational time period. However, if the inner slope of the mini-halo
density profile is sufficiently steeper than the Navarro-Frenk-White (NFW)
profile, e.g., the pseudo-Jaffe profile, one may be able to detect one to more
than hundred such GW events by ET and CE.
|
[{'version': 'v1', 'created': 'Fri, 1 Jul 2022 10:32:07 GMT'}]
|
2022-07-27
|
[array(['Guo', 'Xiao', '', 'NAOC, UCAS'], dtype=object)
array(['Lu', 'Youjun', '', 'NAOC, UCAS'], dtype=object)]
|
19,156 |
1703.08228
|
Craig Blackmore
|
Craig Blackmore, Oliver Ray, Kerstin Eder
|
Automatically Tuning the GCC Compiler to Optimize the Performance of
Applications Running on Embedded Systems
| null | null | null | null |
cs.DC cs.PF
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper introduces a novel method for automatically tuning the selection
of compiler flags to optimize the performance of software intended to run on
embedded hardware platforms. We begin by developing our approach on code
compiled by the GNU C Compiler (GCC) for the ARM Cortex-M3 (CM3) processor; and
we show how our method outperforms the industry standard -O3 optimization level
across a diverse embedded benchmark suite. First we quantify the potential
gains by using existing iterative compilation approaches that time-intensively
search for optimal configurations for each benchmark. Then we adapt iterative
compilation to output a single configuration that optimizes performance across
the entire benchmark suite. Although this is a time-consuming process, our
approach constructs an optimized variation of -O3, which we call -Ocm3, that
realizes nearly two thirds of known available gains on the CM3 and
significantly outperforms a more complex state-of-the-art predictive method in
cross-validation experiments. Finally, we demonstrate our method on additional
platforms by constructing two more optimization levels that find even more
significant speed-ups on the ARM Cortex-A8 and 8-bit AVR processors.
|
[{'version': 'v1', 'created': 'Thu, 23 Feb 2017 17:36:08 GMT'}
{'version': 'v2', 'created': 'Tue, 11 Apr 2017 15:17:59 GMT'}]
|
2017-04-12
|
[array(['Blackmore', 'Craig', ''], dtype=object)
array(['Ray', 'Oliver', ''], dtype=object)
array(['Eder', 'Kerstin', ''], dtype=object)]
|
19,157 |
astro-ph/0501278
|
Ariane Lan\c{c}on
|
Ariane Lancon, Pierre Ocvirk, Damien Le Borgne, Christophe Pichon,
Philippe Prugniel, Michel Fioc, Brigitte Rocca-Volmerange, and Caroline
Soubiran
|
Modelling and interpreting optical spectra of galaxies at R=10000
|
Inv. talk in "The Spectral Energy Distribution of Gas-Rich Galaxies:
Confronting Models with Data", Heidelberg, 4-8 Oct. 2004, eds. C.C. Popescu
and R.J. Tuffs, AIP Conf. Ser., in press
| null |
10.1063/1.1913917
| null |
astro-ph
| null |
One way to extract more information from the integrated light of galaxies is
to improve the spectral resolution at which observations and analysis are
carried out. The population synthesis code currently providing the highest
spectral resolution is Pegase-HR, which was made available by D. Le Borgne et
al. in 2004. Based on an empirical stellar library, it provides synthetic
spectra between 4000 and 6800 A at lambda/d(lambda)=10000 for any star
formation history, with or without chemical evolution. Such a resolution is
particularly useful for the study of low mass galaxies, massive star clusters,
or other galaxy regions with low internal velocity dispersions.
After a summary of the main features of Pegase-HR and comparisons with other
population synthesis codes, this paper focuses on the inversion of optical
galaxy spectra. We explore the limits of what information can or can not be
recovered, based on theoretical principles and extensive simulations. First
applications to extragalactic objects are shown.
|
[{'version': 'v1', 'created': 'Fri, 14 Jan 2005 12:41:23 GMT'}]
|
2009-11-10
|
[array(['Lancon', 'Ariane', ''], dtype=object)
array(['Ocvirk', 'Pierre', ''], dtype=object)
array(['Borgne', 'Damien Le', ''], dtype=object)
array(['Pichon', 'Christophe', ''], dtype=object)
array(['Prugniel', 'Philippe', ''], dtype=object)
array(['Fioc', 'Michel', ''], dtype=object)
array(['Rocca-Volmerange', 'Brigitte', ''], dtype=object)
array(['Soubiran', 'Caroline', ''], dtype=object)]
|
19,158 |
astro-ph/0303587
|
Elia Stefano Battistelli
|
E.S. Battistelli, M. De Petris, L. Lamagna, G. Luzzi, R. Maoli, A.
Melchiorri, F. Melchiorri, A. Orlando, E. Palladino, G. Savini, Y. Rephaeli,
M. Shimon, M. Signore, S. Colafrancesco
|
Triple Experiment Spectrum of the Sunyaev-Zeldovich Effect in the Coma
Cluster: H_0
|
11 pages, 1 figure
|
Astrophys.J.598:L75-L78,2003
|
10.1086/380778
| null |
astro-ph
| null |
The Sunyaev-Zeldovich (SZ) effect was previously measured in the Coma cluster
by the Owens Valley Radio Observatory and Millimeter and IR Testa Grigia
Observatory experiments and recently also with the Wilkinson Microwave
Anisotropy Probe satellite. We assess the consistency of these results and
their implications on the feasibility of high-frequency SZ work with
ground-based telescopes. The unique data set from the combined measurements at
six frequency bands is jointly analyzed, resulting in a best-fit value for the
Thomson optical depth at the cluster center, tau_{0}=(5.35 \pm 0.67) 10^{-3}.
The combined X-ray and SZ determined properties of the gas are used to
determine the Hubble constant. For isothermal gas with a \beta density profile
we derive H_0 = 84 \pm 26 km/(s\cdot Mpc); the (1\sigma) error includes only
observational SZ and X-ray uncertainties.
|
[{'version': 'v1', 'created': 'Wed, 26 Mar 2003 19:09:02 GMT'}
{'version': 'v2', 'created': 'Wed, 10 Dec 2003 17:04:57 GMT'}]
|
2009-11-07
|
[array(['Battistelli', 'E. S.', ''], dtype=object)
array(['De Petris', 'M.', ''], dtype=object)
array(['Lamagna', 'L.', ''], dtype=object)
array(['Luzzi', 'G.', ''], dtype=object)
array(['Maoli', 'R.', ''], dtype=object)
array(['Melchiorri', 'A.', ''], dtype=object)
array(['Melchiorri', 'F.', ''], dtype=object)
array(['Orlando', 'A.', ''], dtype=object)
array(['Palladino', 'E.', ''], dtype=object)
array(['Savini', 'G.', ''], dtype=object)
array(['Rephaeli', 'Y.', ''], dtype=object)
array(['Shimon', 'M.', ''], dtype=object)
array(['Signore', 'M.', ''], dtype=object)
array(['Colafrancesco', 'S.', ''], dtype=object)]
|
19,159 |
2211.02398
|
Tulika Maitra
|
Srishti Bhardwaj, T. Maitra
|
Two-dimensional Rare-earth Halide Based Single Phase Triferroic
|
7 Pages, 5 figures
| null | null | null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Two-dimensional multiferroic materials are highly sought after due to their
huge potential for applications in nanoelectronic and spintronic devices. Here,
we predict, based on first-principle calculations, a single phase {\it
triferroic} where three ferroic orders; ferromagnetism, ferroelectricity and
ferroelasticity, coexist simultaneously in hole doped GdCl$_2$ monolayer (a
ferromagnetic semiconductor). This is achieved by substituting 1/3rd of the
Gd$^{2+}$ ions with Eu$^{2+}$ in the hexagonal structure of GdCl$_2$ monolayer.
The resulting metallic state undergoes a bond-centered charge ordering driving
a distortion in the hexagonal structure making it semiconducting again and {\it
ferroelastic}. Further, the lattice distortion accompanied by a breaking of the
lattice centrosymmetry renders a non-centrosymmetric charge distribution which
makes the monolayer {\it ferroelectric}, at the same time. The two ferroic
orders, ferroelectricity and ferroelasticity, present in Eu doped GdCl$_2$
monolayer are found to be strongly coupled making it a promising candidate for
device applications. The doped monolayer remains a ferromagnetic semiconductor
with large 4f magnetic moment just like the parent monolayer and possesses an
even higher (out-of-plane) magnetic anisotropy energy (MAE) than its pristine
counterpart as desired for two dimensional magnets to have high transition
temperature.
|
[{'version': 'v1', 'created': 'Fri, 4 Nov 2022 12:08:00 GMT'}]
|
2022-11-07
|
[array(['Bhardwaj', 'Srishti', ''], dtype=object)
array(['Maitra', 'T.', ''], dtype=object)]
|
19,160 |
2004.01793
|
Siva Karthik Mustikovela
|
Siva Karthik Mustikovela, Varun Jampani, Shalini De Mello, Sifei Liu,
Umar Iqbal, Carsten Rother, Jan Kautz
|
Self-Supervised Viewpoint Learning From Image Collections
|
Accepted at CVPR 20
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Training deep neural networks to estimate the viewpoint of objects requires
large labeled training datasets. However, manually labeling viewpoints is
notoriously hard, error-prone, and time-consuming. On the other hand, it is
relatively easy to mine many unlabelled images of an object category from the
internet, e.g., of cars or faces. We seek to answer the research question of
whether such unlabeled collections of in-the-wild images can be successfully
utilized to train viewpoint estimation networks for general object categories
purely via self-supervision. Self-supervision here refers to the fact that the
only true supervisory signal that the network has is the input image itself. We
propose a novel learning framework which incorporates an analysis-by-synthesis
paradigm to reconstruct images in a viewpoint aware manner with a generative
network, along with symmetry and adversarial constraints to successfully
supervise our viewpoint estimation network. We show that our approach performs
competitively to fully-supervised approaches for several object categories like
human faces, cars, buses, and trains. Our work opens up further research in
self-supervised viewpoint learning and serves as a robust baseline for it. We
open-source our code at https://github.com/NVlabs/SSV.
|
[{'version': 'v1', 'created': 'Fri, 3 Apr 2020 22:01:41 GMT'}]
|
2020-04-07
|
[array(['Mustikovela', 'Siva Karthik', ''], dtype=object)
array(['Jampani', 'Varun', ''], dtype=object)
array(['De Mello', 'Shalini', ''], dtype=object)
array(['Liu', 'Sifei', ''], dtype=object)
array(['Iqbal', 'Umar', ''], dtype=object)
array(['Rother', 'Carsten', ''], dtype=object)
array(['Kautz', 'Jan', ''], dtype=object)]
|
19,161 |
0707.1178
|
Gabriel Hetet
|
G. H\'etet, A. Peng, M. T. Johnsson, J. J. Hope, P. K. Lam
|
Characterization of EIT-based continuous variable quantum memories
| null | null | null | null |
quant-ph
| null |
We present a quantum multi-modal treatment describing Electromagnetically
Induced Transparency (EIT) as a mechanism for storing continuous variable
quantum information in light fields. Taking into account the atomic noise and
decoherences of realistic experiments, we model numerically the propagation,
storage, and readout of signals contained in the sideband amplitude and phase
quadratures of a light pulse. An analytical treatment of the effects predicted
by this more sophisticated model is then presented. Finally, we use quantum
information benchmarks to examine the properties of the EIT-based memory and
show the parameters needed to operate beyond the quantum limit.
|
[{'version': 'v1', 'created': 'Mon, 9 Jul 2007 04:30:32 GMT'}]
|
2007-07-10
|
[array(['Hétet', 'G.', ''], dtype=object)
array(['Peng', 'A.', ''], dtype=object)
array(['Johnsson', 'M. T.', ''], dtype=object)
array(['Hope', 'J. J.', ''], dtype=object)
array(['Lam', 'P. K.', ''], dtype=object)]
|
19,162 |
0903.0408
|
Mathieu Vienney
|
Mathieu Vienney
|
A new construction of p-adic Rankin convolutions in the case of positive
slope
|
Minor changes
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Given two newforms $f$ and $g$ of respective weights $k$ and $l$ with $k<l$,
Hida constructed a $p$-adic $L$-function interpolating the values of the Rankin
convolution of $f$ and $g$ in the critical strip $l \leq s \leq k$. However,
this construction works only if $f$ is an ordinary form. Using a method
developed by Panchishkin to construct $p$-adic $L$-function associated with
modular forms, we generalize this construction to the case where the slope of
$f$ is small.
|
[{'version': 'v1', 'created': 'Mon, 2 Mar 2009 23:46:02 GMT'}
{'version': 'v2', 'created': 'Tue, 19 May 2009 14:50:30 GMT'}]
|
2009-05-19
|
[array(['Vienney', 'Mathieu', ''], dtype=object)]
|
19,163 |
2107.11543
|
Nicolas de Saxc\'e
|
Nicolas de Saxc\'e
|
Groupes arithm\'etiques et approximation diophantienne
|
121 pages, in French, 7 figures
| null | null | null |
math.NT
|
http://creativecommons.org/licenses/by/4.0/
|
We develop a theory of diophantine approximation on generalized flag
varieties, varieties that can be obtained as a quotient of a semisimple
algebraic group by a parabolic subgroup. Using methods from the theory of
arithmetic groups, due in particular to Borel and Harish-Chandra, and to
Margulis and his collaborators, we prove in this setting analogs of the
classical theorems of diophantine approximation.
|
[{'version': 'v1', 'created': 'Sat, 24 Jul 2021 06:23:46 GMT'}]
|
2021-07-27
|
[array(['de Saxcé', 'Nicolas', ''], dtype=object)]
|
19,164 |
2112.00072
|
David Criens
|
David Criens
|
On the relation of one-dimensional diffusions on natural scale and their
speed measures
| null | null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is well-known that the law of a one-dimensional diffusion on natural scale
is fully characterized by its speed measure. C. Stone proved a continuous
dependence of diffusions on their speed measures. In this paper we establish
the converse direction, i.e. we prove a continuous dependence of the speed
measures on their diffusions. Furthermore, we take a topological point of view
on the relation. More precisely, for suitable topologies, we establish a
homeomorphic relation between the set of regular diffusions on natural scale
without absorbing boundaries and the set of locally finite speed measures.
|
[{'version': 'v1', 'created': 'Tue, 30 Nov 2021 20:17:15 GMT'}]
|
2021-12-02
|
[array(['Criens', 'David', ''], dtype=object)]
|
19,165 |
1611.01115
|
David Galvin
|
Antonio Blanca, Yuxuan Chen, David Galvin, Dana Randall and Prasad
Tetali
|
Phase Coexistence for the Hard-Core Model on ${\mathbb Z}^2$
|
A weaker version of this result, with a proof outline, was announced
in A. Blanca, D. Galvin, D. Randall and P. Tetali, Phase Coexistence and Slow
Mixing for the Hard-Core Model on Z^2, Lecture Notes in Comput. Sci. 8096
(Proc. APPROX/RANDOM 2013) (2013), 379-394, arXiv:1211.6182. Here we give the
full proof. This version correct some small typographic errors from the
earlier version
| null | null | null |
math.PR cs.DM math-ph math.CO math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The hard-core model has attracted much attention across several disciplines,
representing lattice gases in statistical physics and independent sets in
discrete mathematics and computer science. On finite graphs, we are given a
parameter $\lambda$, and an independent set $I$ arises with probability
proportional to $\lambda^{|I|}$. On infinite graphs a Gibbs measure is defined
as a suitable limit with the correct conditional probabilities, and we are
interested in determining when this limit is unique and when there is phase
coexistence, i.e., existence of multiple Gibbs measures.
It has long been conjectured that on ${\mathbb Z}^2$ this model has a
critical value $\lambda_c \approx 3.796$ with the property that if $\lambda <
\lambda_c$ then it exhibits uniqueness of phase, while if $\lambda > \lambda_c$
then there is phase coexistence. Much of the work to date on this problem has
focused on the regime of uniqueness, with the state of the art being recent
work of Sinclair, Srivastava, \v{S}tefankovi\v{c} and Yin showing that there is
a unique Gibbs measure for all $\lambda < 2.538$. Here we give the first
non-trivial result in the other direction, showing that there are multiple
Gibbs measures for all $\lambda > 5.3506$. There is some potential for lowering
this bound, but with the methods we are using we cannot hope to replace
$5.3506$ with anything below about $4.8771$.
Our proof begins along the lines of the standard Peierls argument, but we add
two innovations. First, following ideas of Koteck\'y and Randall, we construct
an event that distinguishes two boundary conditions and always has long
contours associated with it, obviating the need to accurately enumerate short
contours. Second, we obtain improved bounds on the number of contours by
relating them to a new class of self-avoiding walks on an oriented version of
${\mathbb Z}^2$.
|
[{'version': 'v1', 'created': 'Thu, 3 Nov 2016 18:07:34 GMT'}
{'version': 'v2', 'created': 'Fri, 30 Mar 2018 19:22:57 GMT'}]
|
2018-04-03
|
[array(['Blanca', 'Antonio', ''], dtype=object)
array(['Chen', 'Yuxuan', ''], dtype=object)
array(['Galvin', 'David', ''], dtype=object)
array(['Randall', 'Dana', ''], dtype=object)
array(['Tetali', 'Prasad', ''], dtype=object)]
|
19,166 |
2112.13070
|
Alexandre Kisselev
|
S.C. \.Inan and A.V. Kisselev
|
Search for invisible dark photon in $\gamma e$ scattering at future
lepton colliders
|
24 pages, 10 figures; one equation and two references are added
| null |
10.1140/epjc/s10052-022-10552-1
| null |
hep-ph hep-ex
|
http://creativecommons.org/licenses/by/4.0/
|
For the first time, the production of a massive dark photon (DP) in the
$\gamma e^-$ scattering at the future lepton colliders ILC, CLIC, and CEPC is
examined. The invisible decay mode of the DP is addressed. We have studied both
the unpolarized scattering and the collision of the Compton backscattered
photons with the polarized electron. The missing energy distributions are
shown. We have considered the wide range 10 GeV -- 1000 GeV of the DP mass
$m_{A'}$. The excluded regions at the 95\% C.L. in the plane $(\varepsilon,
m_{A'})$, where $\varepsilon$ is the kinetic mixing parameter, are obtained.
|
[{'version': 'v1', 'created': 'Fri, 24 Dec 2021 14:15:21 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Feb 2022 15:40:13 GMT'}
{'version': 'v3', 'created': 'Mon, 11 Apr 2022 09:25:27 GMT'}]
|
2022-07-13
|
[array(['İnan', 'S. C.', ''], dtype=object)
array(['Kisselev', 'A. V.', ''], dtype=object)]
|
19,167 |
math/0602299
|
T. Tony Cai
|
T. Tony Cai, Mark G. Low
|
On adaptive estimation of linear functionals
|
Published at http://dx.doi.org/10.1214/009053605000000633 in the
Annals of Statistics (http://www.imstat.org/aos/) by the Institute of
Mathematical Statistics (http://www.imstat.org)
|
Annals of Statistics 2005, Vol. 33, No. 5, 2311-2343
|
10.1214/009053605000000633
|
IMS-AOS-AOS0045
|
math.ST stat.TH
| null |
Adaptive estimation of linear functionals over a collection of parameter
spaces is considered. A between-class modulus of continuity, a geometric
quantity, is shown to be instrumental in characterizing the degree of
adaptability over two parameter spaces in the same way that the usual modulus
of continuity captures the minimax difficulty of estimation over a single
parameter space. A general construction of optimally adaptive estimators based
on an ordered modulus of continuity is given. The results are complemented by
several illustrative examples.
|
[{'version': 'v1', 'created': 'Tue, 14 Feb 2006 13:30:58 GMT'}]
|
2007-06-13
|
[array(['Cai', 'T. Tony', ''], dtype=object)
array(['Low', 'Mark G.', ''], dtype=object)]
|
19,168 |
1810.06599
|
Colin Gordon
|
Sergey Matskevich, Colin S. Gordon
|
Generating Comments From Source Code with CCGs
|
NL4SE 2018 preprint
| null |
10.1145/3283812.3283822
| null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Good comments help developers understand software faster and provide better
maintenance. However, comments are often missing, generally inaccurate, or out
of date. Many of these problems can be avoided by automatic comment generation.
This paper presents a method to generate informative comments directly from the
source code using general-purpose techniques from natural language processing.
We generate comments using an existing natural language model that couples
words with their individual logical meaning and grammar rules, allowing comment
generation to proceed by search from declarative descriptions of program text.
We evaluate our algorithm on several classic algorithms implemented in Python.
|
[{'version': 'v1', 'created': 'Mon, 15 Oct 2018 18:25:25 GMT'}]
|
2018-10-17
|
[array(['Matskevich', 'Sergey', ''], dtype=object)
array(['Gordon', 'Colin S.', ''], dtype=object)]
|
19,169 |
astro-ph/0408169
|
Matthew Coleman
|
Matthew Coleman
|
Substructure in Dwarf Galaxies
|
3 Pages, to appear in PASA issue 4 of 2004 for the "Structure and
Dynamics in the Local Universe" conference (Sydney, 24-26 Nov. 2003)
| null |
10.1071/AS04040
| null |
astro-ph
| null |
Recent years have seen a series of large-scale photometric surveys with the
aim of detecting substructure in nearby dwarf galaxies. Some of these objects
display a varying distribution of each stellar population, reflecting their
star formation histories. Also, dwarf galaxies are dominated by dark matter,
therefore luminous substructure may represent a perturbation in the underlying
dark material. Substructure can also be the effect of tidal interaction, such
as the disruption of the Sagittarius dSph by the Milky Way. Therefore,
substructure in dwarf galaxies manifests the stellar, structural and kinematic
evolution of these objects.
|
[{'version': 'v1', 'created': 'Tue, 10 Aug 2004 00:38:43 GMT'}]
|
2009-11-10
|
[array(['Coleman', 'Matthew', ''], dtype=object)]
|
19,170 |
2303.17045
|
Christoph Hertrich
|
Vincent Froese, Christoph Hertrich
|
Training Neural Networks is NP-Hard in Fixed Dimension
| null | null | null | null |
cs.CC cs.DS cs.LG cs.NE stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the parameterized complexity of training two-layer neural networks
with respect to the dimension of the input data and the number of hidden
neurons, considering ReLU and linear threshold activation functions. Albeit the
computational complexity of these problems has been studied numerous times in
recent years, several questions are still open. We answer questions by Arora et
al. [ICLR '18] and Khalife and Basu [IPCO '22] showing that both problems are
NP-hard for two dimensions, which excludes any polynomial-time algorithm for
constant dimension. We also answer a question by Froese et al. [JAIR '22]
proving W[1]-hardness for four ReLUs (or two linear threshold neurons) with
zero training error. Finally, in the ReLU case, we show fixed-parameter
tractability for the combined parameter number of dimensions and number of
ReLUs if the network is assumed to compute a convex map. Our results settle the
complexity status regarding these parameters almost completely.
|
[{'version': 'v1', 'created': 'Wed, 29 Mar 2023 22:16:52 GMT'}]
|
2023-03-31
|
[array(['Froese', 'Vincent', ''], dtype=object)
array(['Hertrich', 'Christoph', ''], dtype=object)]
|
19,171 |
0905.0363
|
Wojciech Mazurczyk
|
Wojciech Mazurczyk, Milosz Smolarczyk, Krzysztof Szczypiorski
|
Hiding Information in Retransmissions
|
12 pages, 12 figures, 6 tables
| null | null | null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The paper presents a new steganographic method called RSTEG (Retransmission
Steganography), which is intended for a broad class of protocols that utilises
retransmission mechanisms. The main innovation of RSTEG is to not acknowledge a
successfully received packet in order to intentionally invoke retransmission.
The retransmitted packet carries a steganogram instead of user data in the
payload field. RSTEG is presented in the broad context of network
steganography, and the utilisation of RSTEG for TCP (Transport Control
Protocol) retransmission mechanisms is described in detail. Simulation results
are also presented with the main aim to measure and compare the steganographic
bandwidth of the proposed method for different TCP retransmission mechanisms as
well as to determine the influence of RSTEG on the network retransmissions
level.
|
[{'version': 'v1', 'created': 'Mon, 4 May 2009 12:18:32 GMT'}
{'version': 'v2', 'created': 'Tue, 5 May 2009 07:08:03 GMT'}
{'version': 'v3', 'created': 'Thu, 14 May 2009 20:58:34 GMT'}]
|
2009-05-14
|
[array(['Mazurczyk', 'Wojciech', ''], dtype=object)
array(['Smolarczyk', 'Milosz', ''], dtype=object)
array(['Szczypiorski', 'Krzysztof', ''], dtype=object)]
|
19,172 |
2305.08363
|
Fabian G\"ottsch
|
Fabian G\"ottsch, Noboru Osawa, Yoshiaki Amano, Issei Kanno, Kosuke
Yamazaki, Giuseppe Caire
|
User-Centric Clustering Under Fairness Scheduling in Cell-Free Massive
MIMO
|
arXiv admin note: text overlap with arXiv:2211.15294
| null | null | null |
cs.IT eess.SP math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider fairness scheduling in a user-centric cell-free massive MIMO
network, where $L$ remote radio units, each with $M$ antennas, serve $K_{\rm
tot} \approx LM$ user equipments (UEs). Recent results show that the maximum
network sum throughput is achieved where $K_{\rm act} \approx \frac{LM}{2}$ UEs
are simultaneously active in any given time-frequency slots. However, the
number of users $K_{\rm tot}$ in the network is usually much larger. This
requires that users are scheduled over the time-frequency resource and achieve
a certain throughput rate as an average over the slots. We impose throughput
fairness among UEs with a scheduling approach aiming to maximize a concave
component-wise non-decreasing network utility function of the per-user
throughput rates. In cell-free user-centric networks, the pilot and cluster
assignment is usually done for a given set of active users. Combined with
fairness scheduling, this requires pilot and cluster reassignment at each
scheduling slot, involving an enormous overhead of control signaling exchange
between network entities. We propose a fixed pilot and cluster assignment
scheme (independent of the scheduling decisions), which outperforms the
baseline method in terms of UE throughput, while requiring much less control
information exchange between network entities.
|
[{'version': 'v1', 'created': 'Mon, 15 May 2023 05:44:34 GMT'}]
|
2023-05-16
|
[array(['Göttsch', 'Fabian', ''], dtype=object)
array(['Osawa', 'Noboru', ''], dtype=object)
array(['Amano', 'Yoshiaki', ''], dtype=object)
array(['Kanno', 'Issei', ''], dtype=object)
array(['Yamazaki', 'Kosuke', ''], dtype=object)
array(['Caire', 'Giuseppe', ''], dtype=object)]
|
19,173 |
2204.09253
|
Changqing Ye
|
Changqing Ye, Eric T. Chung, Junzhi Cui
|
Homogenization with quasistatic Tresca's friction law: qualitative and
quantitative results
| null | null | null | null |
math.AP cs.NA math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The problems of frictional contacts are the key to the investigation of
mechanical performances of composite materials under varying service
environments. The paper considers a linear elasticity system with strongly
heterogeneous coefficients and quasistatic Tresca's friction law, and we study
the homogenization theories under the frameworks of H-convergence and small
$\epsilon$-periodicity. The qualitative result is based on H-convergence, which
shows the original oscillating solutions will converge weakly to the
homogenized solution, while our quantitative result provides an estimate of
asymptotic errors in the $H^1$ norm for the periodic homogenization. We also
design several numerical experiments to validate the convergence rates in the
quantitative analysis.
|
[{'version': 'v1', 'created': 'Wed, 20 Apr 2022 06:39:47 GMT'}]
|
2022-04-21
|
[array(['Ye', 'Changqing', ''], dtype=object)
array(['Chung', 'Eric T.', ''], dtype=object)
array(['Cui', 'Junzhi', ''], dtype=object)]
|
19,174 |
hep-ex/9712027
|
Nick Brook HEP Glasgow
|
A. T. Doyle(University of Glasgow)
|
Diffraction: QCD Effects in Colour Singlet Exchange
|
38 pages. 39 postscript figures + 1 postscript preprint logo + 1
LaTeX file + 3 style file. Talk presented at the 25th SLAC Summer Institute
Also available at http://ppewww.ph.gla.ac.uk/preprints/97/13/
| null | null |
GLAS-PPE-97-13
|
hep-ex
| null |
Measurements of diffractive phenomena observed at HERA and the Tevatron are
reviewed. A short introduction to the theoretical background is presented where
colour singlet exchange reactions are discussed and the diffractive
contribution and its interpretation via pomeron exchange outlined. The review
focuses on the current experimental directions at HERA and discusses exclusive
production of vector mesons, the dissociation of real photons and the deep
inelastic structure of diffraction. Complementary information obtained from
hadronic final states and jet structures is also discussed. The experimental
signatures for diffractive jet and $W^\pm$ production observed at the Tevatron
are described and the rates compared with those from the HERA experiments.
|
[{'version': 'v1', 'created': 'Mon, 22 Dec 1997 09:26:50 GMT'}]
|
2007-05-23
|
[array(['Doyle', 'A. T.', '', 'University of Glasgow'], dtype=object)]
|
19,175 |
1401.2335
|
Patrick Dehornoy
|
Patrick Dehornoy (LMNO, PPS), Victoria Lebed (OCAMI)
|
Two- and three-cocycles for Laver tables
| null | null | null | null |
math.KT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We determine all 2- and 3-cocycles for Laver tables, an infinite sequence of
finite structures obeying the left-selfdistributivity law; in particular, we
describe simple explicit bases. This provides a number of new positive braid
invariants and paves the way for further potential topological applications.
Incidentally, we establish and study a partial ordering on Laver tables given
by the right-divisibility relation.
|
[{'version': 'v1', 'created': 'Fri, 10 Jan 2014 14:07:06 GMT'}
{'version': 'v2', 'created': 'Mon, 3 Feb 2014 12:17:36 GMT'}]
|
2014-02-04
|
[array(['Dehornoy', 'Patrick', '', 'LMNO, PPS'], dtype=object)
array(['Lebed', 'Victoria', '', 'OCAMI'], dtype=object)]
|
19,176 |
1503.02390
|
Keisuke Yano
|
Keisuke Yano, Fumiyasu Komaki
|
Information criteria for multistep ahead predictions
| null |
Statistica Sinica 27 (2017), 1205-1223
|
10.5705/ss.202015.0380
| null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose an information criterion for multistep ahead predictions. It is
also used for extrapolations. For the derivation, we consider multistep ahead
predictions under local misspecification. In the prediction, we show that
Bayesian predictive distributions asymptotically have smaller Kullback--Leibler
risks than plug-in predictive distributions. From the results, we construct an
information criterion for multistep ahead predictions by using an
asymptotically unbiased estimator of the Kullback--Leibler risk of Bayesian
predictive distributions. We show the effectiveness of the proposed information
criterion throughout the numerical experiments.
|
[{'version': 'v1', 'created': 'Mon, 9 Mar 2015 08:13:24 GMT'}]
|
2019-12-06
|
[array(['Yano', 'Keisuke', ''], dtype=object)
array(['Komaki', 'Fumiyasu', ''], dtype=object)]
|
19,177 |
0802.1048
|
Todd Adams
|
T. Adams (Florida State University)
|
Searches for Long-lived Particles at the Tevatron Collider
|
submitted to Mod. Phys. Lett. A
|
Mod.Phys.Lett.A23:371-385,2008
|
10.1142/S0217732308026467
| null |
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Several searches for long-lived particles have been performed using data from
p-pbar collisions from Run II at the Tevatron. In most cases, new analysis
techniques have been developed to carry out each search and/or estimate the
backgrounds. These searches expand the discovery potential of the CDF and D0
experiments to new physics that may have been missed by traditional search
techniques. This review discusses searches for (1) neutral, long-lived
particles decaying to muons, (2) massive, neutral, long-lived particles
decaying to a photon and missing energy, (3) stopped gluinos, and (4) charged
massive stable particles. It summarizes some of the theoretical and
experimental motivations for such searches.
|
[{'version': 'v1', 'created': 'Thu, 7 Feb 2008 19:20:39 GMT'}]
|
2008-11-26
|
[array(['Adams', 'T.', '', 'Florida State University'], dtype=object)]
|
19,178 |
cond-mat/0209228
|
Agha Afsar Ali
|
Agha Afsar Ali
|
Cooperative behavior in a spatial model of "commons"
|
12 pages 9 figures
| null | null | null |
cond-mat.stat-mech cond-mat.dis-nn
| null |
We study a lattice model of ``commons'', where a resource is shared locally
among the agents of various cooperative tendency. The payoff function of an
agent is proportional to the fraction of his operation rate and the net output
of the resource. After each time step a site is occupied by the neighbor of
maximum profit or by its owner himself. In steady state the model is dominated
by ``altruist'' agents with a small minority of selfish agents, forming a
complex pattern. The dynamics selects cooperative levels in a way that the
model becomes critical. We study the critical behavior of the model in case of
moderate mutation rate and find the power spectrum of fluctuation of activity
shows a $1/f^\alpha$ behavior with $\alpha \sim 1.30$. In case of very slow
mutation rate the steady state has slow fluctuations which helps the evolution
of higher cooperative tendency.
|
[{'version': 'v1', 'created': 'Tue, 10 Sep 2002 06:06:08 GMT'}]
|
2007-05-23
|
[array(['Ali', 'Agha Afsar', ''], dtype=object)]
|
19,179 |
1106.2119
|
Lars Lydersen
|
Lars Lydersen and Nitin Jain and Christoffer Wittmann and {\O}ystein
Mar{\o}y and Johannes Skaar and Christoph Marquardt and Vadim Makarov and
Gerd Leuchs
|
Superlinear threshold detectors in quantum cryptography
|
Rewritten for clearity. Included a discussion on detector dark
counts, a discussion on how to tackle this type of loopholes, and updated
references. 8 pages, 6 figures
|
Phys. Rev. A 84, 032320 (2011)
|
10.1103/PhysRevA.84.032320
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce the concept of a superlinear threshold detector, a detector that
has a higher probability to detect multiple photons if it receives them
simultaneously rather than at separate times. Highly superlinear threshold
detectors in quantum key distribution systems allow eavesdropping the full
secret key without being revealed. Here, we generalize the detector control
attack, and analyze how it performs against quantum key distribution systems
with moderately superlinear detectors. We quantify the superlinearity in
superconducting single-photon detectors based on earlier published data, and
gated avalanche photodiode detectors based on our own measurements. The
analysis shows that quantum key distribution systems using detector(s) of
either type can be vulnerable to eavesdropping. The avalanche photodiode
detector becomes superlinear towards the end of the gate, allowing
eavesdropping using trigger pulses containing less than 120 photons per pulse.
Such an attack would be virtually impossible to catch with an optical power
meter at the receiver entrance.
|
[{'version': 'v1', 'created': 'Fri, 10 Jun 2011 16:55:51 GMT'}
{'version': 'v2', 'created': 'Wed, 17 Aug 2011 10:59:45 GMT'}]
|
2011-09-19
|
[array(['Lydersen', 'Lars', ''], dtype=object)
array(['Jain', 'Nitin', ''], dtype=object)
array(['Wittmann', 'Christoffer', ''], dtype=object)
array(['Marøy', 'Øystein', ''], dtype=object)
array(['Skaar', 'Johannes', ''], dtype=object)
array(['Marquardt', 'Christoph', ''], dtype=object)
array(['Makarov', 'Vadim', ''], dtype=object)
array(['Leuchs', 'Gerd', ''], dtype=object)]
|
19,180 |
1509.04679
|
Rieuwert Blok
|
Rieuwert J. Blok and Corneliu G. Hoffman
|
$1$-cohomology of simplicial amalgams of groups
| null |
1-cohomology of simplicial amalgams of groups. R. J. Blok and C.
G. Hoffman. J. Alg. Combin. 37(2013) no. 2:381-400
|
10.1007/s10801-012-0374-0
| null |
math.GR math.CO math.CT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We develop a cohomological method to classify amalgams of groups. We
generalize this to simplicial amalgams in any concrete category. We compute the
non-commutative 1-cohomology for several examples of amalgams defined over
small simplices.
|
[{'version': 'v1', 'created': 'Tue, 15 Sep 2015 19:01:26 GMT'}]
|
2015-09-16
|
[array(['Blok', 'Rieuwert J.', ''], dtype=object)
array(['Hoffman', 'Corneliu G.', ''], dtype=object)]
|
19,181 |
1310.6607
|
Franz Lemmermeyer
|
Franz Lemmermeyer
|
The 4-class group of real quadratic number fields
|
unpublished
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we give an elementary proof of results on the structure of
4-class groups of real quadratic number fields originally due to A. Scholz. In
a second (and independent) section we strengthen C. Maire's result that the
2-class field tower of a real quadratic number field is infinite if its ideal
class group has 4-rank at least $4$, using a technique due to F. Hajir.
|
[{'version': 'v1', 'created': 'Thu, 24 Oct 2013 13:24:32 GMT'}]
|
2013-10-25
|
[array(['Lemmermeyer', 'Franz', ''], dtype=object)]
|
19,182 |
0906.1640
|
B. J. Powell
|
B. J. Powell
|
An introduction to effective low-energy Hamiltonians in condensed matter
physics and chemistry
|
Some more typos corrected
| null | null | null |
physics.chem-ph cond-mat.quant-gas cond-mat.stat-mech cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
These lecture notes introduce some simple effective Hamiltonians (also known
as semi-empirical models) that have widespread applications to solid state and
molecular systems. They are aimed as an introduction to a beginning graduate
student. I also hope that it may help to break down the divide between the
physics and chemistry literatures. After a brief introduction to second
quantisation notation, which is used extensively, I focus of the "four H's":
the Huckel (or tight binding), Hubbard, Heisenberg and Holstein models. Some
other related models, such as the Pariser-Parr-Pople model, the extended
Hubbard model, multi-orbital models and the ionic Hubbard model, are also
discussed. Finally, I discuss the epistemological basis of effective
Hamiltonians and compare and contrast this with that of ab initio methods as
well as discussing the problem of parametrising effective Hamiltonians.
|
[{'version': 'v1', 'created': 'Tue, 9 Jun 2009 06:12:03 GMT'}
{'version': 'v2', 'created': 'Thu, 11 Jun 2009 00:38:32 GMT'}
{'version': 'v3', 'created': 'Mon, 24 Aug 2009 06:47:08 GMT'}
{'version': 'v4', 'created': 'Mon, 5 Oct 2009 05:45:48 GMT'}
{'version': 'v5', 'created': 'Thu, 15 Oct 2009 03:49:12 GMT'}
{'version': 'v6', 'created': 'Fri, 16 Oct 2009 05:38:09 GMT'}
{'version': 'v7', 'created': 'Sun, 21 Feb 2010 23:06:04 GMT'}]
|
2016-09-08
|
[array(['Powell', 'B. J.', ''], dtype=object)]
|
19,183 |
0706.3813
|
Isabel Sainz
|
Isabel Sainz and Gunnar Bj\"ork
|
Entanglement invariant for the double Jaynes-Cummings model
|
Sec. V has largely been rewritten. An error pertaining to the
entanglement invariant has been corrected and a correct invariant valid for a
much larger set of states have been found, Eq. (25)
|
Phys. Rev. A 76, 042313 (2007)
|
10.1103/PhysRevA.76.042313
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study entanglement dynamics between four qubits interacting through two
isolated Jaynes-Cummings hamiltonians, via the entanglement measure based on
the wedge product. We compare the results with similar results obtained using
bipartite concurrence resulting in what is referred to as "entanglement sudden
death". We find a natural entanglement invariant under evolution demonstrating
that entanglement sudden death is caused by ignoring (tracing over) some of the
system's degrees of freedom that become entangled through the interaction.
|
[{'version': 'v1', 'created': 'Tue, 26 Jun 2007 12:38:31 GMT'}
{'version': 'v2', 'created': 'Wed, 8 Aug 2007 10:49:18 GMT'}
{'version': 'v3', 'created': 'Fri, 10 Oct 2008 20:24:36 GMT'}]
|
2009-11-13
|
[array(['Sainz', 'Isabel', ''], dtype=object)
array(['Björk', 'Gunnar', ''], dtype=object)]
|
19,184 |
astro-ph/0204001
|
Phil Armitage
|
Philip J. Armitage, Mario Livio, S.H. Lubow, J.E. Pringle
|
Predictions for the frequency and orbital radii of massive extrasolar
planets
|
MNRAS, in press
| null |
10.1046/j.1365-8711.2002.05531.x
| null |
astro-ph
| null |
We investigate the migration of massive extrasolar planets due to
gravitational interaction with a viscous protoplanetary disc. We show that a
model in which planets form at 5 AU at a constant rate, before migrating, leads
to a predicted distribution of planets that is a steeply rising function of log
(a), where a is the orbital radius. Between 1 AU and 3 AU, the expected number
of planets per logarithmic interval in orbital radius roughly doubles. We
demonstrate that, once selection effects are accounted for, this is consistent
with current data, and then extrapolate the observed planet fraction to masses
and radii that are inaccessible to current observations. In total, about 15
percent of stars targeted by existing radial velocity searches are predicted to
possess planets with masses 0.3 M_Jupiter < M_p sin (i) < 10 M_Jupiter, and
radii 0.1 AU < a < 5 AU. A third of these planets (around 5 percent of the
target stars) lie at the radii most amenable to detection via microlensing. A
further 5-10 percent of stars could have planets at radii of 5 AU < a < 8 AU
that have migrated outwards. We discuss the probability of forming a system
(akin to the Solar System) in which significant radial migration of the most
massive planet does not occur. About 10-15 percent of systems with a surviving
massive planet are estimated to fall into this class. Finally, we note that a
smaller fraction of low mass planets than high mass planets is expected to
survive without being consumed by the star. The initial mass function for
planets is thus predicted to rise more steeply towards small masses than the
observed mass function.
|
[{'version': 'v1', 'created': 'Fri, 29 Mar 2002 21:18:51 GMT'}]
|
2009-11-07
|
[array(['Armitage', 'Philip J.', ''], dtype=object)
array(['Livio', 'Mario', ''], dtype=object)
array(['Lubow', 'S. H.', ''], dtype=object)
array(['Pringle', 'J. E.', ''], dtype=object)]
|
19,185 |
hep-th/0606114
|
Raphael Bousso
|
Raphael Bousso, Ben Freivogel, and I-Sheng Yang
|
Eternal Inflation: The Inside Story
|
17 pages, 12 figures; v2, PRD format
|
Phys.Rev.D74:103516,2006
|
10.1103/PhysRevD.74.103516
|
UCB-PTH-06/09, LBNL-60250
|
hep-th
| null |
Motivated by the lessons of black hole complementarity, we develop a causal
patch description of eternal inflation. We argue that an observer cannot
ascribe a semiclassical geometry to regions outside his horizon, because the
large-scale metric is governed by the fluctuations of quantum fields. In order
to identify what is within the horizon, it is necessary to understand the late
time asymptotics. Any given worldline will eventually exit from eternal
inflation into a terminal vacuum. If the cosmological constant is negative, the
universe crunches. If it is zero, then we find that the observer's fate depends
on the mechanism of eternal inflation. Worldlines emerging from an eternal
inflation phase driven by thermal fluctuations end in a singularity. By
contrast, if eternal inflation ends by bubble nucleation, the observer can
emerge into an asymptotic, locally flat region. As evidence that bubble
collisions preserve this property, we present an exact solution describing the
collision of two bubbles.
|
[{'version': 'v1', 'created': 'Wed, 14 Jun 2006 18:43:29 GMT'}
{'version': 'v2', 'created': 'Fri, 15 Sep 2006 19:07:33 GMT'}]
|
2008-11-26
|
[array(['Bousso', 'Raphael', ''], dtype=object)
array(['Freivogel', 'Ben', ''], dtype=object)
array(['Yang', 'I-Sheng', ''], dtype=object)]
|
19,186 |
1406.7296
|
Yuhe Zhang
|
Yuhe Zhang, Ying-Hai Wu, Jimmy A. Hutasoit, and Jainendra K. Jain
|
Theoretical investigation of edge reconstruction in the $\nu$=5/2 and
7/3 fractional quantum Hall states
|
19 pages, 15 figures
|
Phys. Rev. B 90, 165104 (2014)
|
10.1103/PhysRevB.90.165104
| null |
cond-mat.str-el cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The edge physics of the $\nu=5/2$ fractional quantum Hall state is of
relevance to several recent experiments that use it as a probe to gain insight
into the nature of the bulk state. We perform calculations in a semi-realistic
setup with positive background charge at a distance $d$, by exact
diagonalization both in the full Hilbert space (neglecting Landau level mixing)
and in the restricted Pfaffian basis of edge excitations. Our principal finding
is that the 5/2 edge is unstable to a reconstruction except for very small $d$.
In addition, the interactions between the electrons in the second Landau level
and the lowest Landau level enhance the tendency toward edge reconstruction. We
identify the bosonic and fermionic modes of edge excitations and obtain their
dispersions by back-calculating from the energy spectra as well as directly
from appropriate trial wave functions. We find that the edge reconstruction is
driven by an instability in the fermionic sector for setback distances close to
the critical ones. We also study the edge of the $\nu=7/3$ state and find that
edge reconstruction occurs here more readily than for the $\nu=1/3$ state. Our
study indicates that the $\nu=5/2$ and 7/3 edge states are reconstructed for
all experimental systems investigated so far and thus must be taken into
account when analyzing experimental results. We also consider an effective
field theory to gain insight into how edge reconstruction might influence
various observable quantities.
|
[{'version': 'v1', 'created': 'Fri, 27 Jun 2014 20:01:04 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Oct 2014 19:13:34 GMT'}]
|
2014-10-07
|
[array(['Zhang', 'Yuhe', ''], dtype=object)
array(['Wu', 'Ying-Hai', ''], dtype=object)
array(['Hutasoit', 'Jimmy A.', ''], dtype=object)
array(['Jain', 'Jainendra K.', ''], dtype=object)]
|
19,187 |
2008.09773
|
Yoav Goldstein
|
Yoav Goldstein, Martin Sch\"atz and Mireille Avigal
|
Chest Area Segmentation in Depth Images of Sleeping Patients
|
13 pages, 15 figures
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Although the field of sleep study has greatly developed over the recent
years, the most common and efficient way to detect sleep issues remains a sleep
examination performed in a sleep laboratory, in a procedure called
Polysomnography (PSG). This examination measures several vital signals during a
full night's sleep using multiple sensors connected to the patient's body. Yet,
despite being the golden standard, the connection of the sensors and the
unfamiliar environment inevitably impact the quality of the patient's sleep and
the examination itself. Therefore, with the novel development of more accurate
and affordable 3D sensing devices, new approaches for non-contact sleep study
emerged. These methods utilize different techniques with the purpose to extract
the same sleep parameters, but remotely, eliminating the need of any physical
connections to the patient's body. However, in order to enable reliable remote
extraction, these methods require accurate identification of the basic Region
of Interest (ROI) i.e. the chest area of the patient, a task that is currently
holding back the development process, as it is performed manually for each
patient. In this study, we propose an automatic chest area segmentation
algorithm, that given an input set of 3D frames of a sleeping patient, outputs
a segmentation image with the pixels that correspond to the chest area, and can
then be used as an input to subsequent sleep analysis algorithms. Except for
significantly speeding up the development process of the non-contact methods,
accurate automatic segmentation can also enable a more precise feature
extraction and it is shown it is already improving sensitivity of prior
solutions on average 46.9% better compared to manual ROI selection. All
mentioned will place the extraction algorithms of the non-contact methods as a
leading candidate to replace the existing traditional methods used today.
|
[{'version': 'v1', 'created': 'Sat, 22 Aug 2020 07:54:32 GMT'}]
|
2020-08-25
|
[array(['Goldstein', 'Yoav', ''], dtype=object)
array(['Schätz', 'Martin', ''], dtype=object)
array(['Avigal', 'Mireille', ''], dtype=object)]
|
19,188 |
2006.14679
|
Basavesh Ammanaghatta Shivakumar
|
Paul M. Berges, Basavesh Ammanaghatta Shivakumar, Timothy Graziano,
Ryan Gerdes and Z. Berkay Celik
|
On the Feasibility of Exploiting Traffic Collision Avoidance System
Vulnerabilities
| null | null | null | null |
eess.SP cs.CY cs.SY eess.SY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Traffic Collision Avoidance Systems (TCAS) are safety-critical systems
required on most commercial aircrafts in service today. However, TCAS was not
designed to account for malicious actors. While in the past it may have been
infeasible for an attacker to craft radio signals to mimic TCAS signals,
attackers today have access to open-source digital signal processing software,
like GNU Radio, and inexpensive software defined radios (SDR) that enable the
transmission of spurious TCAS messages. In this paper, methods, both
qualitative and quantitative, for analyzing TCAS from an adversarial
perspective are presented. To demonstrate the feasibility of inducing near
mid-air collisions between current day TCAS-equipped aircraft, an experimental
Phantom Aircraft generator is developed using GNU Radio and an SDR against a
realistic threat model.
|
[{'version': 'v1', 'created': 'Thu, 25 Jun 2020 20:03:17 GMT'}]
|
2020-06-29
|
[array(['Berges', 'Paul M.', ''], dtype=object)
array(['Shivakumar', 'Basavesh Ammanaghatta', ''], dtype=object)
array(['Graziano', 'Timothy', ''], dtype=object)
array(['Gerdes', 'Ryan', ''], dtype=object)
array(['Celik', 'Z. Berkay', ''], dtype=object)]
|
19,189 |
2109.08233
|
Yvette Perrott
|
Yvette C. Perrott, Pedro Carvalho, Patrick J. Elwood, Keith J. B.
Grainge, David A. Green, Kamran Javid, Terry Z. Jin, Clare Rumsey and Richard
D. E. Saunders
|
A 15.5 GHz detection of the galaxy cluster minihalo in RXJ1720.1+2638
|
19 pages, 16 figures, accepted to MNRAS
| null |
10.1093/mnras/stab2706
| null |
astro-ph.CO
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
RXJ1720.1+2638 is a cool-core, 'relaxed-appearing' cluster with a minihalo
previously detected up to 8.4 GHz, confined by X-ray-detected cold fronts. We
present observations of the minihalo at 13 - 18 GHz with the Arcminute
Microkelvin Imager telescope, simultaneously modelling the Sunyaev-Zel'dovich
signal of the cluster in conjunction with Planck and Chandra data in order to
disentangle the non-thermal emission of the minihalo. We show that the
previously-reported steepening of the minihalo emission at 8.4 GHz is not
supported by the AMI data and that the spectrum is consistent with a single
power-law up to 18 GHz. We also show the presence of a larger-scale component
of the minihalo extending beyond the cold fronts. Both of these observations
could be explained by the 'hadronic' or 'secondary' mechanism for the
production of relativistic electrons, rather than the currently-favoured
're-acceleration' mechanism and/or multiple episodes of jet activity from the
active galactic nucleus in the brightest cluster galaxy.
|
[{'version': 'v1', 'created': 'Thu, 16 Sep 2021 21:39:49 GMT'}]
|
2021-09-29
|
[array(['Perrott', 'Yvette C.', ''], dtype=object)
array(['Carvalho', 'Pedro', ''], dtype=object)
array(['Elwood', 'Patrick J.', ''], dtype=object)
array(['Grainge', 'Keith J. B.', ''], dtype=object)
array(['Green', 'David A.', ''], dtype=object)
array(['Javid', 'Kamran', ''], dtype=object)
array(['Jin', 'Terry Z.', ''], dtype=object)
array(['Rumsey', 'Clare', ''], dtype=object)
array(['Saunders', 'Richard D. E.', ''], dtype=object)]
|
19,190 |
2105.11406
|
Alex Townsend
|
Martin Kassabov and Steven H. Strogatz and Alex Townsend
|
Sufficiently dense Kuramoto networks are globally synchronizing
|
6 pages, 1 figure
| null |
10.1063/5.0057659
| null |
math.DS nlin.AO
|
http://creativecommons.org/licenses/by/4.0/
|
Consider any network of $n$ identical Kuramoto oscillators in which each
oscillator is coupled bidirectionally with unit strength to at least $\mu
(n-1)$ other oscillators. There is a critical value of the connectivity,
$\mu_c$, such that whenever $\mu>\mu_c$, the system is guaranteed to converge
to the all-in-phase synchronous state for almost all initial conditions, but
when $\mu<\mu_c$, there are networks with other stable states. The precise
value of the critical connectivity remains unknown, but it has been conjectured
to be $\mu_c=0.75$. In 2020, Lu and Steinerberger proved that $\mu_c\leq
0.7889$, and Yoneda, Tatsukawa, and Teramae proved in 2021 that $\mu_c >
0.6838$. In this paper, we prove that $\mu_c\leq 0.75$ and explain why this is
the best upper bound that one can obtain by a purely linear stability analysis.
|
[{'version': 'v1', 'created': 'Mon, 24 May 2021 16:56:46 GMT'}]
|
2021-08-11
|
[array(['Kassabov', 'Martin', ''], dtype=object)
array(['Strogatz', 'Steven H.', ''], dtype=object)
array(['Townsend', 'Alex', ''], dtype=object)]
|
19,191 |
2005.04504
|
Saeed Saremi
|
Saeed Saremi, Rupesh Srivastava
|
Provable Robust Classification via Learned Smoothed Densities
|
24 pages, 6 figures
| null | null | null |
stat.ML cs.LG math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Smoothing classifiers and probability density functions with Gaussian kernels
appear unrelated, but in this work, they are unified for the problem of robust
classification. The key building block is approximating the $\textit{energy
function}$ of the random variable $Y=X+N(0,\sigma^2 I_d)$ with a neural network
which we use to formulate the problem of robust classification in terms of
$\widehat{x}(Y)$, the $\textit{Bayes estimator}$ of $X$ given the noisy
measurements $Y$. We introduce $\textit{empirical Bayes smoothed classifiers}$
within the framework of $\textit{randomized smoothing}$ and study it
theoretically for the two-class linear classifier, where we show one can
improve their robustness above $\textit{the margin}$. We test the theory on
MNIST and we show that with a learned smoothed energy function and a linear
classifier we can achieve provable $\ell_2$ robust accuracies that are
competitive with empirical defenses. This setup can be significantly improved
by $\textit{learning}$ empirical Bayes smoothed classifiers with adversarial
training and on MNIST we show that we can achieve provable robust accuracies
higher than the state-of-the-art empirical defenses in a range of radii. We
discuss some fundamental challenges of randomized smoothing based on a
geometric interpretation due to concentration of Gaussians in high dimensions,
and we finish the paper with a proposal for using walk-jump sampling, itself
based on learned smoothed densities, for robust classification.
|
[{'version': 'v1', 'created': 'Sat, 9 May 2020 19:52:32 GMT'}]
|
2020-05-12
|
[array(['Saremi', 'Saeed', ''], dtype=object)
array(['Srivastava', 'Rupesh', ''], dtype=object)]
|
19,192 |
astro-ph/0409138
|
Olivier Le Fevre
|
A. Pollo, B. Meneux, L. Guzzo, O. Le Fevre, J. Blaizot, A. Cappi, A.
Iovino, C. Marinoni, H.J. McCracken, D. Bottini, B. Garilli, V. Le Brun, D.
Maccagni, J.P. Picat, R. Scaramella, M. Scodeggio, L. Tresse, G. Vettolani,
A. Zanichelli, C. Adami, S. Bardelli, M. Bolzonella, S. Charlot, T. Contini,
S. Foucaud, P. Franzetti, I. Gavignaud, O. Ilbert, B. Marano, G. Mathez, A.
Mazure, R. Merighi, S. Paltani, R. Pell\`o, L. Pozzetti, M. Radovich, G.
Zamorani, E. Zucca, M. Bondi, A. Bongiorno, G. Busarello, P. Ciliegi, Y.
Mellier, P. Merluzzi, V. Ripepi, D. Rizzo
|
The VIMOS VLT Deep Survey: Computing the two point correlation
statistics and associated uncertainties
|
16 pages, accepted 10-Mar-05 in A&A
| null |
10.1051/0004-6361:20041964
| null |
astro-ph
| null |
We are presenting in this paper a detailed account of the methods used to
compute the three-dimensional two-point galaxy correlation function in the
VIMOS-VLT deep survey (VVDS). We investigate how instrumental selection effects
and observational biases affect the measurements and identify the methods to
correct them. We quantify the accuracy of our correction method using an
ensemble of fifty mock galaxy surveys generated with the GalICS semi-analytic
model of galaxy formation which incorporate the same selection biases and
tiling strategy as the real data does. We demonstrate that we are able to
recover the real-space two-point correlation function xi(s) to an accuracy
better than 10% on scales larger than 1 h^{-1} Mpc, and of about 30% on scales
below 1 h^{-1} Mpc, with the sampling strategy used for the first epoch VVDS
data. The projected correlation function w_p(r_p) is recovered with an accuracy
better than 10% on all scales 0.1 <= r <= 10 h^{-1} Mpc. There is a tendency
for a small but systematic under-estimate of the correlation length derived
from w_p(r_p) of 6% on average, remaining after our correction process. The
large number of simulated surveys allows us to provide a reliable estimate of
the cosmic error on the measurements of the correlation length r_0, of about
15-20% for the first epoch VVDS observation (Le Fevre et al.2004,
astro-ph/0409133). The error estimation and measurement techniques outlined in
this paper are being used in several studies which investigate in detail the
clustering properties of galaxies in the VVDS data.
|
[{'version': 'v1', 'created': 'Mon, 6 Sep 2004 20:08:31 GMT'}
{'version': 'v2', 'created': 'Sat, 2 Jul 2005 11:43:19 GMT'}]
|
2009-11-10
|
[array(['Pollo', 'A.', ''], dtype=object)
array(['Meneux', 'B.', ''], dtype=object)
array(['Guzzo', 'L.', ''], dtype=object)
array(['Fevre', 'O. Le', ''], dtype=object)
array(['Blaizot', 'J.', ''], dtype=object)
array(['Cappi', 'A.', ''], dtype=object)
array(['Iovino', 'A.', ''], dtype=object)
array(['Marinoni', 'C.', ''], dtype=object)
array(['McCracken', 'H. J.', ''], dtype=object)
array(['Bottini', 'D.', ''], dtype=object)
array(['Garilli', 'B.', ''], dtype=object)
array(['Brun', 'V. Le', ''], dtype=object)
array(['Maccagni', 'D.', ''], dtype=object)
array(['Picat', 'J. P.', ''], dtype=object)
array(['Scaramella', 'R.', ''], dtype=object)
array(['Scodeggio', 'M.', ''], dtype=object)
array(['Tresse', 'L.', ''], dtype=object)
array(['Vettolani', 'G.', ''], dtype=object)
array(['Zanichelli', 'A.', ''], dtype=object)
array(['Adami', 'C.', ''], dtype=object)
array(['Bardelli', 'S.', ''], dtype=object)
array(['Bolzonella', 'M.', ''], dtype=object)
array(['Charlot', 'S.', ''], dtype=object)
array(['Contini', 'T.', ''], dtype=object)
array(['Foucaud', 'S.', ''], dtype=object)
array(['Franzetti', 'P.', ''], dtype=object)
array(['Gavignaud', 'I.', ''], dtype=object)
array(['Ilbert', 'O.', ''], dtype=object)
array(['Marano', 'B.', ''], dtype=object)
array(['Mathez', 'G.', ''], dtype=object)
array(['Mazure', 'A.', ''], dtype=object)
array(['Merighi', 'R.', ''], dtype=object)
array(['Paltani', 'S.', ''], dtype=object)
array(['Pellò', 'R.', ''], dtype=object)
array(['Pozzetti', 'L.', ''], dtype=object)
array(['Radovich', 'M.', ''], dtype=object)
array(['Zamorani', 'G.', ''], dtype=object)
array(['Zucca', 'E.', ''], dtype=object)
array(['Bondi', 'M.', ''], dtype=object)
array(['Bongiorno', 'A.', ''], dtype=object)
array(['Busarello', 'G.', ''], dtype=object)
array(['Ciliegi', 'P.', ''], dtype=object)
array(['Mellier', 'Y.', ''], dtype=object)
array(['Merluzzi', 'P.', ''], dtype=object)
array(['Ripepi', 'V.', ''], dtype=object)
array(['Rizzo', 'D.', ''], dtype=object)]
|
19,193 |
1703.02913
|
Daniel Ceverino
|
Daniel Ceverino, Simon Glover, Ralf Klessen
|
Introducing the FirstLight project: UV luminosity function and scaling
relations of primeval galaxies
|
8 pages, 9 figures, accepted at MNRAS
| null |
10.1093/mnras/stx1386
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce the FirstLight project that aims to generate a large database of
high-resolution, zoom-in simulations of galaxy formation around the epoch of
reionisation ($z\geq6$). The first results of this program agree well with
recent observational constraints at z=6-8, including the UV luminosity function
and galaxy stellar mass function, as well as the scaling relationships between
halo mass, stellar mass, and UV magnitude. The UV luminosity function starts to
flatten below MUV>-14 due to stellar feedback in halos with maximum circular
velocities of V=30-40 km/s. The power-law slope of the luminosity function
evolves rapidly with redshift, reaching a value of alpha=-2.5 at z=10. On the
other hand, the galaxy stellar mass function evolves slowly with time between
z=8-10, in particular at the low-mass end.
|
[{'version': 'v1', 'created': 'Wed, 8 Mar 2017 17:00:00 GMT'}
{'version': 'v2', 'created': 'Fri, 2 Jun 2017 11:43:18 GMT'}]
|
2017-07-26
|
[array(['Ceverino', 'Daniel', ''], dtype=object)
array(['Glover', 'Simon', ''], dtype=object)
array(['Klessen', 'Ralf', ''], dtype=object)]
|
19,194 |
1712.08568
|
Ratnadwip Singha
|
Ratnadwip Singha, Sudeshna Samanta, Swastika Chatterjee, Arnab
Pariari, Dipanwita Majumdar, Biswarup Satpati, Lin Wang, Achintya Singha,
Prabhat Mandal
|
Probing lattice dynamics and electron-phonon coupling in topological
nodal-line semimetal ZrSiS
| null |
Phys. Rev. B 97, 094112 (2018)
|
10.1103/PhysRevB.97.094112
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Topological materials provide an exclusive platform to study the dynamics of
relativistic particles in table-top experiments and offer the possibility of
wide-scale technological applications. ZrSiS is a newly discovered topological
nodal-line semimetal and has drawn enormous interests. In this report, we have
investigated the lattice dynamics and electron-phonon interaction in single
crystalline ZrSiS using Raman spectroscopy. Polarization and angle resolved
measurements have been performed and the results have been analyzed using
crystal symmetries and theoretically calculated atomic vibrational patterns
along with phonon dispersion spectra. Wavelength and temperature dependent
measurements show the complex interplay of electron and phonon degrees of
freedom, resulting in resonant phonon and quasielastic electron scatterings
through inter-band transitions. Our high-pressure Raman studies reveal
vibrational anomalies, which were further investigated from the high-pressure
synchrotron x-ray diffraction (HPXRD) spectra. From HPXRD, we have clearly
identified pressure-induced structural transitions and coexistence of multiple
phases, which also indicate possible electronic topological transitions in
ZrSiS. The present study not only provides the fundamental information on the
phonon subsystem, but also sheds some light in understanding the topological
nodal-line phase in ZrSiS and other iso-structural systems.
|
[{'version': 'v1', 'created': 'Fri, 22 Dec 2017 16:46:02 GMT'}
{'version': 'v2', 'created': 'Fri, 30 Mar 2018 14:03:40 GMT'}]
|
2018-04-02
|
[array(['Singha', 'Ratnadwip', ''], dtype=object)
array(['Samanta', 'Sudeshna', ''], dtype=object)
array(['Chatterjee', 'Swastika', ''], dtype=object)
array(['Pariari', 'Arnab', ''], dtype=object)
array(['Majumdar', 'Dipanwita', ''], dtype=object)
array(['Satpati', 'Biswarup', ''], dtype=object)
array(['Wang', 'Lin', ''], dtype=object)
array(['Singha', 'Achintya', ''], dtype=object)
array(['Mandal', 'Prabhat', ''], dtype=object)]
|
19,195 |
1706.09386
|
Narendra K C Mr
|
K. C. Narendra, R. Kumaraswamy, S. Gurugopinath
|
On a Novel Speech Representation Using Multitapered Modified Group Delay
Function
| null | null | null | null |
cs.SD
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, a novel multitaper modified group delay function-based
representation for speech signals is proposed. With a set of phoneme-based
experiments, it is shown that the proposed method performs better that an
existing multitaper magnitude (MT-MAG) estimation technique, in terms of
variance and MSE, both in spectral- and cepstral-domains. In particular, the
performance of MT-MOGDF is found to be the best with the Thomson tapers.
Additionally, the utility of the MT-MOGDF technique is highlighted in a speaker
recognition experimental setup, where an improvement of around $20\%$ compared
to the next-best technique is obtained. Moreover, the computational
requirements of the proposed technique is comparable to that of MT-MAG. The
proposed feature can be used in for many speech-related applications; in
particular, it is best suited among those that require information of speaker
and speech.
|
[{'version': 'v1', 'created': 'Thu, 22 Jun 2017 08:05:11 GMT'}
{'version': 'v2', 'created': 'Fri, 29 Dec 2017 15:47:58 GMT'}
{'version': 'v3', 'created': 'Tue, 3 Jul 2018 14:31:29 GMT'}]
|
2018-07-04
|
[array(['Narendra', 'K. C.', ''], dtype=object)
array(['Kumaraswamy', 'R.', ''], dtype=object)
array(['Gurugopinath', 'S.', ''], dtype=object)]
|
19,196 |
0906.3703
|
Paola Verrucchi Mrs
|
Leonardo Banchi, Filippo Colomo, and Paola Verrucchi
|
When finite-size corrections vanish: The S=1/2 XXZ model and the
Razumov-Stroganov state
|
10 pages, 5 figures
|
Phys. Rev. A 80 (2009) 022341
|
10.1103/PhysRevA.80.022341
| null |
cond-mat.str-el cond-mat.stat-mech quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the one-dimensional $S=1/2$ XXZ model on a finite lattice at zero
temperature, varying the exchange anisotropy $\Delta$ and the number of sites
$N$ of the lattice. Special emphasis is given to the model with $\Delta=1/2$
and $N$ odd, whose ground state, the so-called Razumov-Stroganov state, has a
peculiar structure and no finite-size corrections to the energy per site. We
find that such model corresponds to a special point on the $\Delta$-axis which
separates the region where adding spin-pairs increases the energy per site from
that where the longer the chain the lower the energy. Entanglement properties
do not hold surprises for $\Delta=1/2$ and $N$ odd. Finite-size corrections to
the energy per site non trivially vanish also in the ferromagnetic $\Delta\to
-1^+$ isotropic limit, which is consequently addressed; in this case, peculiar
features of some entanglement properties, due to the finite length of the chain
and related with the change in the symmetry of the Hamiltonian, are evidenced
and discussed. In both the above models the absence of finite-size corrections
to the energy per site is related to a peculiar structure of the ground state,
which has permitted us to provide new exact analytic expressions for some
correlation functions.
|
[{'version': 'v1', 'created': 'Fri, 19 Jun 2009 16:08:07 GMT'}]
|
2015-05-13
|
[array(['Banchi', 'Leonardo', ''], dtype=object)
array(['Colomo', 'Filippo', ''], dtype=object)
array(['Verrucchi', 'Paola', ''], dtype=object)]
|
19,197 |
0711.0348
|
Wim Vanhoof
|
Bernd Bra{\ss}el, Michael Hanus and Marion Muller
|
Compiling ER Specifications into Declarative Programs
|
Paper presented at the 17th Workshop on Logic-based Methods in
Programming Environments (WLPE2007)
| null | null | null |
cs.PL cs.SE
| null |
This paper proposes an environment to support high-level database programming
in a declarative programming language. In order to ensure safe database
updates, all access and update operations related to the database are generated
from high-level descriptions in the entity- relationship (ER) model. We propose
a representation of ER diagrams in the declarative language Curry so that they
can be constructed by various tools and then translated into this
representation. Furthermore, we have implemented a compiler from this
representation into a Curry program that provides access and update operations
based on a high-level API for database programming.
|
[{'version': 'v1', 'created': 'Fri, 2 Nov 2007 16:49:30 GMT'}]
|
2007-11-06
|
[array(['Braßel', 'Bernd', ''], dtype=object)
array(['Hanus', 'Michael', ''], dtype=object)
array(['Muller', 'Marion', ''], dtype=object)]
|
19,198 |
2011.11384
|
Shenghuan Yang
|
Guangxin He, Shenghuan Yang, Miaomiao Lei, Xing Wu, Yixin Sun, Yimeng
Dang
|
Influence of Murder Incident of Ride-hailing Drivers on Ride-hailing
User's Consuming Willingness in Nanchang
| null | null | null | null |
cs.CY
|
http://creativecommons.org/licenses/by/4.0/
|
Due to the frequent murder incidents of ride-hailing drivers in China in
2018, ride-hailing companies took a series of measures to prevent such
incidents and ensure ride-hailing passengers' safety. This study investigated
users' willingness to use ride-hailing apps after murder incidents and users'
attitudes toward Safety Rectification. We found that murder incidents of
ride-hailing drivers had a significant adverse impact on people's usage of
ride-hailing apps. Female users' consuming willingness was 0.633 times that of
male users, such as" psychological harm" was more evident among females, and
Safety Rectification had a calming effect for some users. Finally, we found
that people were satisfied with ride-hailing apps' efficiency, but were not
satisfied with safety and reliability, considered them important; female users
were more concerned about the security than male users.
|
[{'version': 'v1', 'created': 'Fri, 20 Nov 2020 05:49:24 GMT'}
{'version': 'v2', 'created': 'Fri, 27 Nov 2020 08:01:49 GMT'}]
|
2020-11-30
|
[array(['He', 'Guangxin', ''], dtype=object)
array(['Yang', 'Shenghuan', ''], dtype=object)
array(['Lei', 'Miaomiao', ''], dtype=object)
array(['Wu', 'Xing', ''], dtype=object)
array(['Sun', 'Yixin', ''], dtype=object)
array(['Dang', 'Yimeng', ''], dtype=object)]
|
19,199 |
0910.2905
|
Arwed Schiller
|
F. Di Renzo, E.-M. Ilgenfritz, H. Perlt, A. Schiller, C. Torrero
|
The lattice ghost propagator in Landau gauge up to three loops using
Numerical Stochastic Perturbation Theory
|
8 pages, 6 figures, XXVII International Symposium on Lattice Field
Theory - LAT2009, Beijing
|
PoS LAT2009:234,2009
| null | null |
hep-lat
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We complete our high-accuracy studies of the lattice ghost propagator in
Landau gauge in Numerical Stochastic Perturbation Theory up to three loops. We
present a systematic strategy which allows to extract with sufficient precision
the non-logarithmic parts of logarithmically divergent quantities as a function
of the propagator momentum squared in the infinite-volume and $a\to 0$ limits.
We find accurate coincidence with the one-loop result for the ghost self-energy
known from standard Lattice Perturbation Theory and improve our previous
estimate for the two-loop constant contribution to the ghost self-energy in
Landau gauge. Our results for the perturbative ghost propagator are compared
with Monte Carlo measurements of the ghost propagator performed by the Berlin
Humboldt university group which has used the exponential relation between
potentials and gauge links.
|
[{'version': 'v1', 'created': 'Thu, 15 Oct 2009 15:23:58 GMT'}]
|
2010-12-09
|
[array(['Di Renzo', 'F.', ''], dtype=object)
array(['Ilgenfritz', 'E. -M.', ''], dtype=object)
array(['Perlt', 'H.', ''], dtype=object)
array(['Schiller', 'A.', ''], dtype=object)
array(['Torrero', 'C.', ''], dtype=object)]
|
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