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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
900 |
1105.3597
|
Michiel Wouters
|
Michiel Wouters
|
The stability of nonequilibrium polariton superflow in the presence of a
cylindrical defect
|
5 pages, 5 figures
| null |
10.1103/PhysRevB.84.224515
| null |
cond-mat.other
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We make a theoretical study of the stability of nonequilibrium polariton
superflows that interact with a cylindrical defect. The nonresonantly pumped
polariton condensate is modelled with a generalized complex Ginzburg-Landau
equation. At low pump intensities the dissipation is found stabilize the
superflow. At large pump intensities, we find an instability that sets a lower
critical speed for superfluidity. For even larger pump power, the lower and
upper critical speed meet and stable superflows are no longer possible.
|
[{'version': 'v1', 'created': 'Wed, 18 May 2011 11:43:55 GMT'}]
|
2015-05-28
|
[array(['Wouters', 'Michiel', ''], dtype=object)]
|
901 |
2101.00060
|
Michael Lindstrom
|
Thomas E. Valles, Hannah Shoenhard, Joseph Zinski, Sarah Trick, Mason
A. Porter, and Michael R. Lindstrom
|
Networks of Necessity: Simulating COVID-19 Mitigation Strategies for
Disabled People and Their Caregivers
|
44 pages, 14 figures
| null | null | null |
cs.SI math.DS nlin.AO physics.soc-ph q-bio.PE
|
http://creativecommons.org/licenses/by/4.0/
|
A major strategy to prevent the spread of COVID-19 is the limiting of
in-person contacts. However, this is impractical or impossible for the many
disabled people who do not live in care facilities, but still require
caregivers. We seek to determine which interventions can prevent infections
among disabled people and their caregivers. We simulate transmission with a
model that includes susceptible, exposed, asymptomatic, symptomatically ill,
hospitalized, and removed individuals. The networks on which we simulate
disease spread incorporate heterogeneity in the risks of different types of
interactions, time-dependent lockdown and reopening measures, and contact
distributions for four different groups (caregivers, disabled people, essential
workers, and the general population). We find the probability of becoming
infected is largest for caregivers and second largest for disabled people. Our
analysis of network structure illustrates that caregivers have the largest
modal eigenvector centrality. We find that two interventions --
contact-limiting by all groups and mask-wearing by disabled people and
caregivers -- most reduce the cases among disabled people and caregivers. We
also test which group spreads COVID-19 most readily by seeding infections in a
subset of each group. We find caregivers are the most potent spreaders of
COVID-19, particularly to other caregivers and to disabled people. We test
where to use limited vaccine doses most effectively and find (1) vaccinating
caregivers better protects disabled people than vaccinating the general
population or essential workers and (2) vaccinating caregivers protects
disabled people about as much as vaccinating disabled people themselves. Our
results highlight the potential effectiveness of mask-wearing, contact-limiting
throughout society, and strategic vaccination for limiting the exposure of
disabled people and their caregivers to COVID-19.
|
[{'version': 'v1', 'created': 'Thu, 31 Dec 2020 20:26:17 GMT'}
{'version': 'v2', 'created': 'Fri, 24 Sep 2021 20:21:09 GMT'}]
|
2021-09-28
|
[array(['Valles', 'Thomas E.', ''], dtype=object)
array(['Shoenhard', 'Hannah', ''], dtype=object)
array(['Zinski', 'Joseph', ''], dtype=object)
array(['Trick', 'Sarah', ''], dtype=object)
array(['Porter', 'Mason A.', ''], dtype=object)
array(['Lindstrom', 'Michael R.', ''], dtype=object)]
|
902 |
physics/0701273
|
Alexander Milov M
|
A Milov, W Anderson, B Azmoun, C-Y Chi, A Drees, A Dubey, M Durham, Z
Fraenkel, J Harder, T Hemmick, R Hutter, B Jacak, J Kamin, A Kozlov, M
Naglis, P O'Connor, R Pisani, V Radeka, I Ravinovich, T Sakaguchi, D Sharma,
A Sickles, S Stoll, I Tserruya, B Yu, C Woody
|
Construction and Expected Performance of the Hadron Blind Detector for
the PHENIX Experiment at RHIC
|
QM2006 proceedings, 4 pages 3 figures
|
J.Phys.G34:S701-704,2007; J.Phys.G34:S705-708,2007
|
10.1088/0954-3899/34/8/S77 10.1088/0954-3899/34/8/S78
| null |
physics.ins-det
| null |
A new Hadron Blind Detector (HBD) for electron identification in high density
hadron environment has been installed in the PHENIX detector at RHIC in the
fall of 2006. The HBD will identify low momentum electron-positron pairs to
reduce the combinatorial background in the $e^{+}e^{-}$ mass spectrum, mainly
in the low-mass region below 1 GeV/c$^{2}$. The HBD is a windowless
proximity-focusing Cherenkov detector with a radiator length of 50 cm, a CsI
photocathode and three layers of Gas Electron Multipliers (GEM). The HBD uses
pure CF$_{4}$ as a radiator and a detector gas. Construction details and the
expected performance of the detector are described.
|
[{'version': 'v1', 'created': 'Tue, 23 Jan 2007 22:46:47 GMT'}]
|
2008-11-26
|
[array(['Milov', 'A', ''], dtype=object)
array(['Anderson', 'W', ''], dtype=object)
array(['Azmoun', 'B', ''], dtype=object)
array(['Chi', 'C-Y', ''], dtype=object)
array(['Drees', 'A', ''], dtype=object)
array(['Dubey', 'A', ''], dtype=object)
array(['Durham', 'M', ''], dtype=object)
array(['Fraenkel', 'Z', ''], dtype=object)
array(['Harder', 'J', ''], dtype=object)
array(['Hemmick', 'T', ''], dtype=object)
array(['Hutter', 'R', ''], dtype=object)
array(['Jacak', 'B', ''], dtype=object)
array(['Kamin', 'J', ''], dtype=object)
array(['Kozlov', 'A', ''], dtype=object)
array(['Naglis', 'M', ''], dtype=object)
array(["O'Connor", 'P', ''], dtype=object)
array(['Pisani', 'R', ''], dtype=object)
array(['Radeka', 'V', ''], dtype=object)
array(['Ravinovich', 'I', ''], dtype=object)
array(['Sakaguchi', 'T', ''], dtype=object)
array(['Sharma', 'D', ''], dtype=object)
array(['Sickles', 'A', ''], dtype=object)
array(['Stoll', 'S', ''], dtype=object)
array(['Tserruya', 'I', ''], dtype=object)
array(['Yu', 'B', ''], dtype=object)
array(['Woody', 'C', ''], dtype=object)]
|
903 |
2104.08170
|
Irene Papaefstathiou
|
Irene Papaefstathiou (1 and 2), Daniel Robaina (1), J. Ignacio Cirac
(1 and 2), Mari Carmen Ba\~nuls (1 and 2) ((1) Max-Planck-Institut f\"ur
Quantenoptik, (2) Munich Center for Quantum Science and Technology (MCQST))
|
Density of States of the lattice Schwinger model
|
10 pages, 5 figures
|
Phys. Rev. D 104, 014514 (2021)
|
10.1103/PhysRevD.104.014514
| null |
hep-lat quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using a recently introduced tensor network method, we study the density of
states of the lattice Schwinger model, a standard testbench for lattice gauge
theory numerical techniques, but also the object of recent experimental quantum
simulations. We identify regimes of parameters where the spectrum appears to be
symmetric and displays the expected continuum properties even for finite
lattice spacing and number of sites. However, we find that for moderate system
sizes and lattice spacing of $ga\sim O(1)$, the spectral density can exhibit
very different properties with a highly asymmetric form. We also explore how
the method can be exploited to extract thermodynamic quantities.
|
[{'version': 'v1', 'created': 'Fri, 16 Apr 2021 15:29:52 GMT'}]
|
2021-08-04
|
[array(['Papaefstathiou', 'Irene', '', '1 and 2'], dtype=object)
array(['Robaina', 'Daniel', '', '1 and 2'], dtype=object)
array(['Cirac', 'J. Ignacio', '', '1 and 2'], dtype=object)
array(['Bañuls', 'Mari Carmen', '', '1 and 2'], dtype=object)]
|
904 |
2007.00700
|
Abhishek Gupta
|
Marianna Bergamaschi Ganapini (1 and 2), Camylle Lanteigne (1 and 3),
Abhishek Gupta (1 and 4) ((1) Montreal AI Ethics Institute, (2) Union
College, (3) McGill University, (4) Microsoft)
|
Response by the Montreal AI Ethics Institute to the Santa Clara
Principles on Transparency and Accountability in Online Content Moderation
|
17 pages
| null | null | null |
cs.CY
|
http://creativecommons.org/licenses/by/4.0/
|
In April 2020, the Electronic Frontier Foundation (EFF) publicly called for
comments on expanding and improving the Santa Clara Principles on Transparency
and Accountability (SCP), originally published in May 2018. The Montreal AI
Ethics Institute (MAIEI) responded to this call by drafting a set of
recommendations based on insights and analysis by the MAIEI staff and
supplemented by workshop contributions from the AI Ethics community convened
during two online public consultation workshops.
In its submission, MAIEI provides 12 overarching recommendations for the SCP,
these include: 1) ensure there is more diversity in the content moderation
process; 2) increase transparency into how platforms guide content-ranking; 3)
disclose anonymized data on the training and/or cultural background of the
content moderators for a platform; 4) tailor content moderation tools for
specific issues; 5) draft specific guidelines for messaging applications with
regards to data protection in content moderation; 6) take into account cultural
differences relevant to what constitutes acceptable behavior online; 7) ensure
platforms are transparent in regards to political advertising; 8) ensure
greater transparency into the user-generated flagging/reporting systems
deployed by a platform; 9) clarify if user content is flagged or reported
through an automated system; 10) provide more data on the types of content
removed from platforms; 11) provide clear guidelines on the appeal process, as
well as data on prior appeals; 12) create a system for periodically revisiting
the SCP so it reflects various technological advancements, modifications in law
and policy, as well as changing trends or movements in content moderation.
|
[{'version': 'v1', 'created': 'Wed, 1 Jul 2020 18:46:08 GMT'}]
|
2020-07-03
|
[array(['Ganapini', 'Marianna Bergamaschi', '', '1 and 2'], dtype=object)
array(['Lanteigne', 'Camylle', '', '1 and 3'], dtype=object)
array(['Gupta', 'Abhishek', '', '1 and 4'], dtype=object)]
|
905 |
hep-th/9305168
| null |
Ovid C. Jacob
|
Zero Modes in a $c = 2$ Matrix Model
|
phyzxx, 14 pages, SLAC-PUB-59xx
|
Phys.Lett.B324:149-159,1994
|
10.1016/0370-2693(94)90401-4
| null |
hep-th
| null |
Recently \REF\dk{Simon Dalley and Igor Klebanov,'Light Cone Quantization of
the $c=2$ Matrix Model', PUPT-1333, hepth@xxx/920705} \refend Dalley and
Klebanov proposed a light-cone quantized study of the $c=2$ matrix model, but
which ignores $k^{+}=0$ contributions. Since the non-critical string limit of
the matrix model involves taking the parameters $\lambda$ and $\mu$ of the
matrix model to a critical point, zero modes of the field might be important in
this study. The constrained light-cone quantization (CLCQ) approach of Heinzl,
Krusche and Werner is applied . It is found that there is coupling between the
zero mode sector and the rest of the theory, hence CLCQ should be implemented.
|
[{'version': 'v1', 'created': 'Fri, 28 May 1993 23:55:00 GMT'}]
|
2011-07-19
|
[array(['Jacob', 'Ovid C.', ''], dtype=object)]
|
906 |
1907.11531
|
Murat Tuncali
|
Wojciech D\k{e}bski, Kazuhiro Kawamura, Murat Tuncal{\i}, and E.D.
Tymchatyn
|
Inverse systems with simplicial bonding maps and cell structures
| null | null | null | null |
math.GN
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For a topologically complete space $X$ and a family of closed covers
$\mathcal A$ of $X$ satisfying a "local refinement condition" and a
"completeness condition," we give a construction of an inverse system $\mathbf{
N}_{\mathcal A}$ of simplicial complexes and simplicial bonding maps such that
the limit space $N_{\infty} = \varprojlim \mathbf{N}_{\mathcal A}$ is homotopy
equivalent to $X$. A connection with cell structures [2],[3] is discussed
|
[{'version': 'v1', 'created': 'Fri, 26 Jul 2019 12:41:45 GMT'}]
|
2019-07-29
|
[array(['Dębski', 'Wojciech', ''], dtype=object)
array(['Kawamura', 'Kazuhiro', ''], dtype=object)
array(['Tuncalı', 'Murat', ''], dtype=object)
array(['Tymchatyn', 'E. D.', ''], dtype=object)]
|
907 |
astro-ph/9908192
|
Laura Ferrarese
|
Laura Ferrarese, Jeremy R. Mould, Robert C. Kennicutt, Jr., John
Huchra, Holland C. Ford, Wendy L. Freedman, Peter B. Stetson, Barry F.
Madore, Shoko Sakai, Brad K. Gibson, John A. Graham, Shaun M. Hughes, Garth
D. Illingworth, Daniel D. Kelson, Lucas Macri, Kim Sebo & N.A. Silbermann
|
The HST Key Project on the Extragalactic Distance Scale XXVI. The
Calibration of Population II Secondary Distance Indicators and the Value of
the Hubble Constant
|
Accepted for publication in the Astrophysical Journal. 48 pages
(including 13 figures and 4 tables), plus two additional tables in landscape
format. Also available at http://astro.caltech.edu/~lff/pub.htm K' SBF
magnitudes have been updated
| null |
10.1086/308309
| null |
astro-ph
| null |
A Cepheid-based calibration is derived for four distance indicators that
utilize stars in the old stellar populations: the tip of the red giant branch
(TRGB), the planetary nebula luminosity function (PNLF), the globular cluster
luminosity function (GCLF) and the surface brightness fluctuation method (SBF).
The calibration is largely based on the Cepheid distances to 18 spiral galaxies
within cz =1500 km/s obtained as part of the HST Key Project on the
Extragalactic Distance Scale, but relies also on Cepheid distances from
separate HST and ground-based efforts. The newly derived calibration of the SBF
method is applied to obtain distances to four Abell clusters in the velocity
range between 3800 and 5000 km/s, observed by Lauer et al. (1998) using the
HST/WFPC2. Combined with cluster velocities corrected for a cosmological flow
model, these distances imply a value of the Hubble constant of H0 = 69 +/- 4
(random) +/- 6 (systematic) km/s/Mpc. This result assumes that the Cepheid PL
relation is independent of the metallicity of the variable stars; adopting a
metallicity correction as in Kennicutt et al. (1998), would produce a (5 +/-
3)% decrease in H0. Finally, the newly derived calibration allows us to
investigate systematics in the Cepheid, PNLF, SBF, GCLF and TRGB distance
scales.
|
[{'version': 'v1', 'created': 'Tue, 17 Aug 1999 23:33:57 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Sep 1999 18:28:08 GMT'}]
|
2012-08-27
|
[array(['Ferrarese', 'Laura', ''], dtype=object)
array(['Mould', 'Jeremy R.', ''], dtype=object)
array(['Kennicutt,', 'Robert C.', 'Jr.'], dtype=object)
array(['Huchra', 'John', ''], dtype=object)
array(['Ford', 'Holland C.', ''], dtype=object)
array(['Freedman', 'Wendy L.', ''], dtype=object)
array(['Stetson', 'Peter B.', ''], dtype=object)
array(['Madore', 'Barry F.', ''], dtype=object)
array(['Sakai', 'Shoko', ''], dtype=object)
array(['Gibson', 'Brad K.', ''], dtype=object)
array(['Graham', 'John A.', ''], dtype=object)
array(['Hughes', 'Shaun M.', ''], dtype=object)
array(['Illingworth', 'Garth D.', ''], dtype=object)
array(['Kelson', 'Daniel D.', ''], dtype=object)
array(['Macri', 'Lucas', ''], dtype=object)
array(['Sebo', 'Kim', ''], dtype=object)
array(['Silbermann', 'N. A.', ''], dtype=object)]
|
908 |
1401.2515
|
Stefano Berardi
|
Stefano Berardi (Universita di Torino)
|
An intuitionistic version of Ramsey Theorem (italian version)
|
in Italian
| null | null | null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Ramsey Theorem [6] for pairs is intuitionistically but not classically
provable: it is equivalent to a subclassical principle [2]. In this note we
show that Ramsey may be restated in an intuitionistically provable form, which
is informative (or at least without negations), and classically equivalent to
the original. With respect to previous works of the same kind, we do not use no
counterexample as in [1], [5], nor we add a new principle to the intuitionism
as in [4]. We claim that this intuitionistic version of Ramsey could be use to
replace Ramsey Theorem in the convergence proof of programs included in [3].
[1] Gianluigi Bellin. Ramsey interpreted: a parametric version of Ramsey
Theorem. In AMS, editor, Logic and Computation: Proceedings of a Symposium held
at Carnegie Mellon University, volume 106.
[2] Stefano Berardi, Silvia Steila, Ramsey Theorem for pairs as a classical
principle in Intuitionistic Arithmetic, Submitted to the proceedings of Types
2013 in Toulouse.
[3] Byron Cook, Abigail See, Florian Zuleger, Ramsey vs. Lexicographic
Termination Proving, LNCS 7795, 2013, Springer Berlin Heidelberg.
[4] Thierry Coquand. A direct proof of Ramsey Theorem.
[5] Paulo Oliva and Thomas Powell. A Constructive Interpretation of Ramsey
Theorem via the Product of Selection Functions. CoRR, arXiv:1204.5631, 2012.
[6] F. P. Ramsey. On a problem in formal logic. Proc. London Math. Soc.,
1930.
|
[{'version': 'v1', 'created': 'Sat, 11 Jan 2014 10:03:56 GMT'}]
|
2014-01-14
|
[array(['Berardi', 'Stefano', '', 'Universita di Torino'], dtype=object)]
|
909 |
1706.07513
|
Georgios Alexandridis Dr.
|
Georgios Alexandridis, Georgios Siolas and Andreas Stafylopatis
|
ParVecMF: A Paragraph Vector-based Matrix Factorization Recommender
System
| null | null | null | null |
cs.IR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Review-based recommender systems have gained noticeable ground in recent
years. In addition to the rating scores, those systems are enriched with
textual evaluations of items by the users. Neural language processing models,
on the other hand, have already found application in recommender systems,
mainly as a means of encoding user preference data, with the actual textual
description of items serving only as side information. In this paper, a novel
approach to incorporating the aforementioned models into the recommendation
process is presented. Initially, a neural language processing model and more
specifically the paragraph vector model is used to encode textual user reviews
of variable length into feature vectors of fixed length. Subsequently this
information is fused along with the rating scores in a probabilistic matrix
factorization algorithm, based on maximum a-posteriori estimation. The
resulting system, ParVecMF, is compared to a ratings' matrix factorization
approach on a reference dataset. The obtained preliminary results on a set of
two metrics are encouraging and may stimulate further research in this area.
|
[{'version': 'v1', 'created': 'Thu, 22 Jun 2017 22:31:46 GMT'}
{'version': 'v2', 'created': 'Mon, 28 Aug 2017 08:11:36 GMT'}
{'version': 'v3', 'created': 'Wed, 10 Jan 2018 15:56:29 GMT'}]
|
2018-01-11
|
[array(['Alexandridis', 'Georgios', ''], dtype=object)
array(['Siolas', 'Georgios', ''], dtype=object)
array(['Stafylopatis', 'Andreas', ''], dtype=object)]
|
910 |
1711.11510
|
Francisco J. Valverde-Albacete Dr.
|
Francisco J. Valverde-Albacete and Carmen Pel\'aez-Moreno
|
Assessing Information Transmission in Data Transformations with the
Channel Multivariate Entropy Triangle
|
21 pages, 7 figures and 1 table
|
Entropy 2018, 20(7), 498
|
10.3390/e20070498
| null |
cs.IT math.IT stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Data transformation, e.g. feature transformation and selection, is an
integral part of any machine learning procedure. In this paper we introduce an
information-theoretic model and tools to assess the quality of data
transformations in machine learning tasks. In an unsupervised fashion, we
analyze the transfer of information of the transformation of a discrete,
multivariate source of information X into a discrete, multivariate sink of
information Y related by a distribution PXY . The first contribution is a
decomposition of the maximal potential entropy of (X, Y) that we call a balance
equation, into its a) non-transferable, b) transferable but not transferred and
c) transferred parts. Such balance equations can be represented in (de Finetti)
entropy diagrams, our second set of contributions. The most important of these,
the aggregate Channel Multivariate Entropy Triangle is a visual exploratory
tool to assess the effectiveness of multivariate data transformations in
transferring information from input to output variables. We also show how these
decomposition and balance equation also apply to the entropies of X and Y
respectively and generate entropy triangles for them. As an example, we present
the application of these tools to the assessment of information transfer
efficiency for PCA and ICA as unsupervised feature transformation and selection
procedures in supervised classification tasks.
|
[{'version': 'v1', 'created': 'Thu, 30 Nov 2017 16:59:23 GMT'}
{'version': 'v2', 'created': 'Wed, 10 Oct 2018 08:08:55 GMT'}]
|
2018-10-11
|
[array(['Valverde-Albacete', 'Francisco J.', ''], dtype=object)
array(['Peláez-Moreno', 'Carmen', ''], dtype=object)]
|
911 |
1411.7446
|
Ricardo J. Alonso-Blanco
|
Ricardo J. Alonso-Blanco and Jes\'us Mu\~noz-D\'iaz
|
On the foundation of Mechanics
|
Spanish
| null | null | null |
math-ph gr-qc math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This note is an extended version of "A note on the foundations of Mechanics",
arXiv: 1404.1321 [math-ph]. A presentation of its contents was given in a talk
in memorial homage to the professor Juan B. Sancho Guimer\'a. For this reason,
it was written in spanish language. The matter of the note is a systematic
foundation of the most classical part of Mechanics. The content by sections is:
0) Notions and basic results, 1) Conservative systems 2) Time. Time
constraints, 3) Proper time. Relativistic forces, 4) Electromagnetic fields, 5)
On the Hamilton-Noether Principle, 6) Schr\"odinger equation.
|
[{'version': 'v1', 'created': 'Thu, 27 Nov 2014 02:40:10 GMT'}
{'version': 'v2', 'created': 'Tue, 9 Dec 2014 22:11:28 GMT'}]
|
2014-12-11
|
[array(['Alonso-Blanco', 'Ricardo J.', ''], dtype=object)
array(['Muñoz-Díaz', 'Jesús', ''], dtype=object)]
|
912 |
1801.04471
|
Shahin Atashbar Tehrani
|
Maral Salajegheh, S.Mohammad Moosavi Nejad, Hamzeh Khanpour, S.
Atashbar Tehrani
|
Analytical approaches to the determination of spin-dependent parton
distribution functions at NNLO approximation
|
30 Pages,5 figures,3 Table
|
Phys. Rev. C 97, 055201 (2018)
|
10.1103/PhysRevC.97.055201
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we present {\tt SMKA18} analysis which is a first attempt to
extract the set of next-to-next-leading-order (NNLO) spin-dependent parton
distribution functions (spin-dependent PDFs) and their uncertainties determined
through the Laplace transform technique and Jacobi polynomial approach. Using
the Laplace transformations, we present an analytical solution for the
spin-dependent Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution equations
at NNLO approximation. The results are extracted using a wide range of proton
$g_1^{p}(x, Q^2)$, neutron $g_1^{n}(x, Q^2)$ and deuteron $g_1^{d}(x, Q^2)$
spin-dependent structure functions dataset including the most recent
high-precision measurements from {\tt COMPASS16} experiments at CERN which are
playing an increasingly important role in global spin-dependent fits. The
careful estimations of uncertainties have been done using the standard 'Hessian
error' propagation. We will compare our results with the available
spin-dependent inclusive deep inelastic scattering dataset and other results
for the spin-dependent PDFs in literature. The results obtained for the
spin-dependent PDFs as well as spin-dependent structure functions are clearly
explained both in the small and large values of $x$.
|
[{'version': 'v1', 'created': 'Sat, 13 Jan 2018 18:05:24 GMT'}
{'version': 'v2', 'created': 'Wed, 2 May 2018 19:27:39 GMT'}]
|
2018-05-09
|
[array(['Salajegheh', 'Maral', ''], dtype=object)
array(['Nejad', 'S. Mohammad Moosavi', ''], dtype=object)
array(['Khanpour', 'Hamzeh', ''], dtype=object)
array(['Tehrani', 'S. Atashbar', ''], dtype=object)]
|
913 |
2107.07311
|
Ming Gong
|
Chong Ying, Qihao Guo, Shaowei Li, Ming Gong, Xiu-Hao Deng, Fusheng
Chen, Chen Zha, Yangsen Ye, Can Wang, Qingling Zhu, Shiyu Wang, Youwei Zhao,
Haoran Qian, Shaojun Guo, Yulin Wu, Hao Rong, Hui Deng, Futian Liang, Jin
Lin, Yu Xu, Cheng-Zhi Peng, Chao-Yang Lu, Zhang-Qi Yin, Xiaobo Zhu, and
Jian-Wei Pan
|
Floquet Prethermal Phase Protected by U(1) Symmetry on a Superconducting
Quantum Processor
|
14 pages, 4 figures, and supplementary materials
| null |
10.1103/PhysRevA.105.012418
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Periodically driven systems, or Floquet systems, exhibit many novel dynamics
and interesting out-of-equilibrium phases of matter. Those phases arising with
the quantum systems' symmetries, such as global $U(1)$ symmetry, can even show
dynamical stability with symmetry-protection. Here we experimentally
demonstrate a $U(1)$ symmetry-protected prethermal phase, via performing a
digital-analog quantum simulation on a superconducting quantum processor. The
dynamical stability of this phase is revealed by its robustness against
external perturbations. We also find that the spin glass order parameter in
this phase is stabilized by the interaction between the spins. Our work reveals
a promising prospect in discovering emergent quantum dynamical phases with
digital-analog quantum simulators.
|
[{'version': 'v1', 'created': 'Thu, 15 Jul 2021 13:30:44 GMT'}]
|
2022-02-02
|
[array(['Ying', 'Chong', ''], dtype=object)
array(['Guo', 'Qihao', ''], dtype=object)
array(['Li', 'Shaowei', ''], dtype=object)
array(['Gong', 'Ming', ''], dtype=object)
array(['Deng', 'Xiu-Hao', ''], dtype=object)
array(['Chen', 'Fusheng', ''], dtype=object)
array(['Zha', 'Chen', ''], dtype=object)
array(['Ye', 'Yangsen', ''], dtype=object)
array(['Wang', 'Can', ''], dtype=object)
array(['Zhu', 'Qingling', ''], dtype=object)
array(['Wang', 'Shiyu', ''], dtype=object)
array(['Zhao', 'Youwei', ''], dtype=object)
array(['Qian', 'Haoran', ''], dtype=object)
array(['Guo', 'Shaojun', ''], dtype=object)
array(['Wu', 'Yulin', ''], dtype=object)
array(['Rong', 'Hao', ''], dtype=object)
array(['Deng', 'Hui', ''], dtype=object)
array(['Liang', 'Futian', ''], dtype=object)
array(['Lin', 'Jin', ''], dtype=object)
array(['Xu', 'Yu', ''], dtype=object)
array(['Peng', 'Cheng-Zhi', ''], dtype=object)
array(['Lu', 'Chao-Yang', ''], dtype=object)
array(['Yin', 'Zhang-Qi', ''], dtype=object)
array(['Zhu', 'Xiaobo', ''], dtype=object)
array(['Pan', 'Jian-Wei', ''], dtype=object)]
|
914 |
2107.01196
|
Tyler Cody
|
Tyler Cody, Peter A. Beling
|
A Systems Theory of Transfer Learning
| null | null | null | null |
cs.LG cs.SY eess.SY math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Existing frameworks for transfer learning are incomplete from a systems
theoretic perspective. They place emphasis on notions of domain and task, and
neglect notions of structure and behavior. In doing so, they limit the extent
to which formalism can be carried through into the elaboration of their
frameworks. Herein, we use Mesarovician systems theory to define transfer
learning as a relation on sets and subsequently characterize the general nature
of transfer learning as a mathematical construct. We interpret existing
frameworks in terms of ours and go beyond existing frameworks to define notions
of transferability, transfer roughness, and transfer distance. Importantly,
despite its formalism, our framework avoids the detailed mathematics of
learning theory or machine learning solution methods without excluding their
consideration. As such, we provide a formal, general systems framework for
modeling transfer learning that offers a rigorous foundation for system design
and analysis.
|
[{'version': 'v1', 'created': 'Fri, 2 Jul 2021 17:25:42 GMT'}]
|
2021-07-05
|
[array(['Cody', 'Tyler', ''], dtype=object)
array(['Beling', 'Peter A.', ''], dtype=object)]
|
915 |
2207.11208
|
Nikki Lijing Kuang
|
Kush Bhatia, Nikki Lijing Kuang, Yi-An Ma, Yixin Wang
|
Statistical and Computational Trade-offs in Variational Inference: A
Case Study in Inferential Model Selection
|
56 pages, 8 figures
| null | null | null |
stat.ML cs.LG
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Variational inference has recently emerged as a popular alternative to the
classical Markov chain Monte Carlo (MCMC) in large-scale Bayesian inference.
The core idea of variational inference is to trade statistical accuracy for
computational efficiency. It aims to approximate the posterior, reducing
computation costs but potentially compromising its statistical accuracy. In
this work, we study this statistical and computational trade-off in variational
inference via a case study in inferential model selection. Focusing on Gaussian
inferential models (a.k.a. variational approximating families) with diagonal
plus low-rank precision matrices, we initiate a theoretical study of the
trade-offs in two aspects, Bayesian posterior inference error and frequentist
uncertainty quantification error. From the Bayesian posterior inference
perspective, we characterize the error of the variational posterior relative to
the exact posterior. We prove that, given a fixed computation budget, a
lower-rank inferential model produces variational posteriors with a higher
statistical approximation error, but a lower computational error; it reduces
variances in stochastic optimization and, in turn, accelerates convergence.
From the frequentist uncertainty quantification perspective, we consider the
precision matrix of the variational posterior as an uncertainty estimate. We
find that, relative to the true asymptotic precision, the variational
approximation suffers from an additional statistical error originating from the
sampling uncertainty of the data. Moreover, this statistical error becomes the
dominant factor as the computation budget increases. As a consequence, for
small datasets, the inferential model need not be full-rank to achieve optimal
estimation error. We finally demonstrate these statistical and computational
trade-offs inference across empirical studies, corroborating the theoretical
findings.
|
[{'version': 'v1', 'created': 'Fri, 22 Jul 2022 17:16:05 GMT'}]
|
2022-07-25
|
[array(['Bhatia', 'Kush', ''], dtype=object)
array(['Kuang', 'Nikki Lijing', ''], dtype=object)
array(['Ma', 'Yi-An', ''], dtype=object)
array(['Wang', 'Yixin', ''], dtype=object)]
|
916 |
2205.06593
|
Christian P\"otzsche
|
Christian P\"otzsche
|
Urysohn and Hammerstein operators on H"older spaces
| null | null | null | null |
math.DS
|
http://creativecommons.org/licenses/by/4.0/
|
We present an application-oriented approach to Urysohn and Hammerstein
integral operators acting between spaces of H"older continuous functions over
compact metric spaces. These nonlinear mappings are formulated by means of an
abstract measure theoretical integral involving a finite measure. This flexible
setting creates a common framework to tackle both such operators based on the
Lebesgue integral like frequently met in applications, as well as e.g.\ their
spatial discretization using stable quadrature/cubature rules (Nystr"om
methods). Under suitable Carath{\'e}odory conditions on the kernel functions,
properties like well-definedness, boundedness, (complete) continuity and
continuous differentiability are established. Furthermore, the special case of
Hammerstein operators is understood as composition of Fredholm and Nemytskii
operators. While our differentiability results for Urysohn operators appear to
be new, the section on Nemytskii operators has a survey character. Finally, an
appendix provides a rather comprehensive account summarizing the required
preliminaries for H\"older continuous functions defined on metric spaces.
|
[{'version': 'v1', 'created': 'Fri, 13 May 2022 12:38:03 GMT'}]
|
2022-05-16
|
[array(['Pötzsche', 'Christian', ''], dtype=object)]
|
917 |
1202.0227
|
Artur Ankowski
|
Artur M. Ankowski, Omar Benhar, Takaaki Mori, Ryuta Yamaguchi, and
Makoto Sakuda
|
Gamma-ray production in neutral-current neutrino-oxygen interactions at
energies above 200 MeV
|
Invited paper to NUFACT 11, XIIIth International Workshop on Neutrino
Factories, Super beams and Beta beams, 1-6 August 2011, CERN and University
of Geneva
| null |
10.1088/1742-6596/408/1/012055
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the results of a calculation of the neutrino- and
antineutrino-induced gamma-ray production cross section for oxygen target. Our
analysis is focused on the kinematical region of neutrino energy larger than
~200MeV, in which single-nucleon knockout is known to be the dominant reaction
mechanism. The numerical results have been obtained using a realistic model of
the target spectral function, extensively tested against electron-nucleus
scattering data. We find that at neutrino energy 600 MeV the fraction of
neutral-current interactions leading to emission of gamma-rays of energy larger
than 6 MeV is ~41%, and that the contribution of the p_{3/2} state is
overwhelming.
|
[{'version': 'v1', 'created': 'Wed, 1 Feb 2012 17:32:50 GMT'}]
|
2015-06-04
|
[array(['Ankowski', 'Artur M.', ''], dtype=object)
array(['Benhar', 'Omar', ''], dtype=object)
array(['Mori', 'Takaaki', ''], dtype=object)
array(['Yamaguchi', 'Ryuta', ''], dtype=object)
array(['Sakuda', 'Makoto', ''], dtype=object)]
|
918 |
1403.2925
|
Noemi Kurt
|
Jochen Blath, Bjarki Eldon, Adri\'an Gonz\'alez Casanova, Noemi Kurt
|
Genealogy of a Wright Fisher model with strong seed bank component
|
16 pages, 4 figures
| null | null | null |
math.PR q-bio.PE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the behaviour of the genealogy of a Wright-Fisher population
model under the influence of a strong seed-bank effect. More precisely, we
consider a simple seed-bank age distribution with two atoms, leading to either
classical or long genealogical jumps (the latter modeling the effect of
seed-dormancy). We assume that the length of these long jumps scales like a
power $N^\beta$ of the original population size $N$, thus giving rise to a
`strong' seed-bank effect. For a certain range of $\beta$, we prove that the
ancestral process of a sample of $n$ individuals converges under a
non-classical time-scaling to Kingman's $n-$coalescent. Further, for a wider
range of parameters, we analyze the time to the most recent common ancestor of
two individuals analytically and by simulation.
|
[{'version': 'v1', 'created': 'Wed, 12 Mar 2014 13:26:33 GMT'}]
|
2014-03-13
|
[array(['Blath', 'Jochen', ''], dtype=object)
array(['Eldon', 'Bjarki', ''], dtype=object)
array(['Casanova', 'Adrián González', ''], dtype=object)
array(['Kurt', 'Noemi', ''], dtype=object)]
|
919 |
cond-mat/0407123
|
Falk Wittel K.
|
H. Matthias Deuschle and Falk K. Wittel and Henry Gerhard and Gerhard
Busse and Bernd-H. Kroeplin (University of Stuttgart)
|
Combined Numerical and Experimental Investigation of Progressive Failure
of Composites
|
15 pages, 13 figures in eps format
| null | null | null |
cond-mat.mtrl-sci
| null |
The combination of Finite Element Method (FEM) simulation and experimental
photo-elasticity provides both qualitative and quantitative information about
the stress field in a polymer composite and particularly along the fibre-matrix
boundary. Investigations were made using model specimens containing up to five
parallel glass fibres loaded at angles from 0 to 15 degrees. The material
properties of the geometrically equivalent FE models are calibrated using the
experimental photoelastic outputs. In contrast to the experimental results, FE
simulations provide full 3D stress fields. For verification purposes, the 3D
stress fields are reduced to two-dimensional synthetic photoelastic phase
images, showing good agreement. Furthermore, detailed studies on the components
of the stress tensor, particularly statements concerning the shear transmitted
by fibre-matrix boundary, progressive fibre failure and the effect of load
angle variation are presented.
|
[{'version': 'v1', 'created': 'Tue, 6 Jul 2004 11:46:16 GMT'}]
|
2007-05-23
|
[array(['Deuschle', 'H. Matthias', '', 'University of Stuttgart'],
dtype=object)
array(['Wittel', 'Falk K.', '', 'University of Stuttgart'], dtype=object)
array(['Gerhard', 'Henry', '', 'University of Stuttgart'], dtype=object)
array(['Busse', 'Gerhard', '', 'University of Stuttgart'], dtype=object)
array(['Kroeplin', 'Bernd-H.', '', 'University of Stuttgart'],
dtype=object) ]
|
920 |
0811.2175
|
Lionel Brehamet
|
Lionel Br\'ehamet
|
Concept of a veritable osp(1$|$2) super-triangle sum rule with 6-$j^S$
symbols from intrinsic operator techniques: an open problem
|
39 pages
| null | null | null |
math-ph math.MP math.QA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Efficiency of intrinsic operator techniques (using only products and ranks of
tensor operators) is first evidenced by condensed proofs of already known
$\bigtriangledown$-triangle sum rules of su(2)/su$_q$(2). {\em A new compact}
su$_q$(2)-{\em expression} is found, using a $q$-series $\Phi$, with
$\Phi(n)_{| q=1}=1$. This success comes from an ultimate identification process
over monomials like $(c_0)^p$. For osp(1$|$2), analogous principles of
calculation are transposed, involving a second parameter $d_0$. Ultimate
identification process then must be done over binomials like
${(c_{0}+{d_{0}}^{2})}^{\Omega -m} ({d_{0}}^{2})^{m}$. {\em Unknown}
polynomials ${\cal P}$ are introduced as well as their expansion coefficients,
$x$, over the binomials. It is clearly shown that a hypothetical super-triangle
sum rule requires super-triangles $\bigtriangleup^{S}$, instead of
$\bigtriangledown$ for su(2)/su$_q$(2). Coefficients $x$ are integers ({\em
conjecture 1}). Massive unknown advances are done for intermediate steps of
calculation. Among other, are proved {\em two theorems} on tensor operators,
"zero" by construction. However, the ultimate identification seems to lead to a
dead end, due to analytical apparent complexities. Up today, except for a few
of coefficients $x$, no general formula is really available.
|
[{'version': 'v1', 'created': 'Thu, 13 Nov 2008 20:11:06 GMT'}]
|
2008-11-14
|
[array(['Bréhamet', 'Lionel', ''], dtype=object)]
|
921 |
hep-ex/0602004
|
Brant M. Johnson
|
PHENIX Collaboration, S.S. Adler, et al
|
Improved Measurement of Double Helicity Asymmetry in Inclusive
Midrapidity pi^0 Production for Polarized p+p Collisions at sqrt(s)=200 GeV
|
389 authors, 4 pages, 2 tables, 1 figure. Submitted to Phys. Rev. D,
Rapid Communications. Plain text data tables for the points plotted in
figures for this and previous PHENIX publications are (or will be) publicly
available at http://www.phenix.bnl.gov/papers.html
|
Phys.Rev.D73:091102,2006
|
10.1103/PhysRevD.73.091102
| null |
hep-ex
| null |
We present an improved measurement of the double helicity asymmetry for pi^0
production in polarized proton-proton scattering at sqrt(s) = 200 GeV employing
the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC). The
improvements to our previous measurement come from two main factors: Inclusion
of a new data set from the 2004 RHIC run with higher beam polarizations than
the earlier run and a recalibration of the beam polarization measurements,
which resulted in reduced uncertainties and increased beam polarizations. The
results are compared to a Next to Leading Order (NLO) perturbative Quantum
Chromodynamics (pQCD) calculation with a range of polarized gluon
distributions.
|
[{'version': 'v1', 'created': 'Wed, 1 Feb 2006 16:14:26 GMT'}]
|
2008-11-26
|
[array(['PHENIX Collaboration', '', ''], dtype=object)
array(['Adler', 'S. S.', ''], dtype=object)]
|
922 |
1908.05967
|
Tome M. Schmidt
|
Tome M. Schmidt, G. P. Srivastava
|
Non-Trivial Topological Phase in the Sn_{1-x}In_xTe Superconductor
| null | null | null | null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Whereas SnTe is a inverted band gap topological crystalline insulator, the
topological phase of the alloy Sn_{1-x}In_xTe, a topological superconductor
candidate, has not been clearly studied so far. Our calculations show that the
Sn_{1-x}In_xTe band gap reduces by increasing the In content, becoming a metal
for x>0.1. However, the band inversion at the fcc L point for both gapped and
gapless phases has been maintained. Furthermore, the computed topological
invariant shows a non-trivial phase with a mirror Chern number n_M = -2 for In
concentrations of x=0.03125, x=0.125, and x=0.25. We also identify pairs of
topologically protected states on the (001) surface of Sn_{1-x}In_xTe with +/-
i mirror eigenvalues. The character of these topological states is affected by
In dopant. As the In content x increases, the Dirac crossing point moves
further away from the L point, and the Fermi velocity of the topological states
increases significantly. Our results demonstrate a non-trivial topological
phase for the superconductor Sn_{1-x}In_xTe, and provide a detailed description
of the topological state properties.
|
[{'version': 'v1', 'created': 'Fri, 16 Aug 2019 13:32:04 GMT'}]
|
2019-08-19
|
[array(['Schmidt', 'Tome M.', ''], dtype=object)
array(['Srivastava', 'G. P.', ''], dtype=object)]
|
923 |
1511.07969
|
Margaryta Myronyuk Dr
|
G.M. Feldman and M.V. Myronyuk
|
On a characterization of idempotent distributions on discrete fields and
on the field of p-adic numbers
| null | null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove the following theorem. Let $X$ be a discrete field, $\xi$ and $\eta$
be independent identically distributed random variables with values in $X$ and
distribution $\mu$. The random variables $S=\xi+\eta$ and $D=(\xi-\eta)^2$ are
independent if and only if $\mu$ is an idempotent distribution. A similar
result is also proved in the case when $\xi$ and $\eta$ are independent
identically distributed random variables with values in the field of $p$-adic
numbers $\mathbf{Q}_p$, where $p>2$, assuming that the distribution $\mu$ has a
continuous density.
|
[{'version': 'v1', 'created': 'Wed, 25 Nov 2015 06:46:12 GMT'}]
|
2015-11-26
|
[array(['Feldman', 'G. M.', ''], dtype=object)
array(['Myronyuk', 'M. V.', ''], dtype=object)]
|
924 |
2202.07499
|
Manashi Chakraborty
|
Manashi Chakraborty, Aritri Chakraborty, Prabir Kumar Biswas, Pabitra
Mitra
|
Texture Aware Autoencoder Pre-training And Pairwise Learning Refinement
For Improved Iris Recognition
| null | null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
This paper presents a texture aware end-to-end trainable iris recognition
system, specifically designed for datasets like iris having limited training
data. We build upon our previous stagewise learning framework with certain key
optimization and architectural innovations. First, we pretrain a Stage-1
encoder network with an unsupervised autoencoder learning optimized with an
additional data relation loss on top of usual reconstruction loss. The data
relation loss enables learning better texture representation which is pivotal
for a texture rich dataset such as iris. Robustness of Stage-1 feature
representation is further enhanced with an auxiliary denoising task. Such
pre-training proves beneficial for effectively training deep networks on data
constrained iris datasets. Next, in Stage-2 supervised refinement, we design a
pairwise learning architecture for an end-to-end trainable iris recognition
system. The pairwise learning includes the task of iris matching inside the
training pipeline itself and results in significant improvement in recognition
performance compared to usual offline matching. We validate our model across
three publicly available iris datasets and the proposed model consistently
outperforms both traditional and deep learning baselines for both
Within-Dataset and Cross-Dataset configurations
|
[{'version': 'v1', 'created': 'Tue, 15 Feb 2022 15:12:31 GMT'}]
|
2022-02-16
|
[array(['Chakraborty', 'Manashi', ''], dtype=object)
array(['Chakraborty', 'Aritri', ''], dtype=object)
array(['Biswas', 'Prabir Kumar', ''], dtype=object)
array(['Mitra', 'Pabitra', ''], dtype=object)]
|
925 |
hep-th/0604146
|
Andrzej Borowiec
|
A. Borowiec, J. Lukierski and V.N. Tolstoy
|
Jordanian Twist Quantization of D=4 Lorentz and Poincare Algebras and
D=3 Contraction Limit
|
13 pages, no figures
|
Eur.Phys.J.C48:633-639,2006
|
10.1140/epjc/s10052-006-0024-6
| null |
hep-th
| null |
We describe in detail two-parameter nonstandard quantum deformation of D=4
Lorentz algebra $\mathfrak{o}(3,1)$, linked with Jordanian deformation of
$\mathfrak{sl} (2;\mathbb{C})$. Using twist quantization technique we obtain
the explicit formulae for the deformed coproducts and antipodes. Further
extending the considered deformation to the D=4 Poincar\'{e} algebra we obtain
a new Hopf-algebraic deformation of four-dimensional relativistic symmetries
with dimensionless deformation parameter. Finally, we interpret
$\mathfrak{o}(3,1)$ as the D=3 de-Sitter algebra and calculate the contraction
limit $R\to\infty$ ($R$ -- de-Sitter radius) providing explicit Hopf algebra
structure for the quantum deformation of the D=3 Poincar\'{e} algebra (with
masslike deformation parameters), which is the two-parameter light-cone
$\kappa$-deformation of the D=3 Poincar\'{e} symmetry.
|
[{'version': 'v1', 'created': 'Thu, 20 Apr 2006 17:40:58 GMT'}]
|
2008-11-26
|
[array(['Borowiec', 'A.', ''], dtype=object)
array(['Lukierski', 'J.', ''], dtype=object)
array(['Tolstoy', 'V. N.', ''], dtype=object)]
|
926 |
1909.10416
|
Chih-Hsuan Wei
|
Chih-Hsuan Wei, Kyubum Lee, Robert Leaman, Zhiyong Lu
|
Biomedical Mention Disambiguation using a Deep Learning Approach
| null | null | null | null |
cs.CL
|
http://creativecommons.org/publicdomain/zero/1.0/
|
Automatically locating named entities in natural language text - named entity
recognition - is an important task in the biomedical domain. Many named entity
mentions are ambiguous between several bioconcept types, however, causing text
spans to be annotated as more than one type when simultaneously recognizing
multiple entity types. The straightforward solution is a rule-based approach
applying a priority order based on the precision of each entity tagger (from
highest to lowest). While this method is straightforward and useful, imprecise
disambiguation remains a significant source of error. We address this issue by
generating a partially labeled corpus of ambiguous concept mentions. We first
collect named entity mentions from multiple human-curated databases (e.g.
CTDbase, gene2pubmed), then correlate them with the text mined span from
PubTator to provide the context where the mention appears. Our corpus contains
more than 3 million concept mentions that ambiguous between one or more concept
types in PubTator (about 3% of all mentions). We approached this task as a
classification problem and developed a deep learning-based method which uses
the semantics of the span being classified and the surrounding words to
identify the most likely bioconcept type. More specifically, we develop a
convolutional neural network (CNN) and along short-term memory (LSTM) network
to respectively handle the semantic syntax features, then concatenate these
within a fully connected layer for final classification. The priority ordering
rule-based approach demonstrated F1-scores of 71.29% (micro-averaged) and
41.19% (macro-averaged), while the new disambiguation method demonstrated
F1-scores of 91.94% (micro-averaged) and 85.42% (macro-averaged), a very
substantial increase.
|
[{'version': 'v1', 'created': 'Mon, 23 Sep 2019 15:14:56 GMT'}]
|
2019-09-24
|
[array(['Wei', 'Chih-Hsuan', ''], dtype=object)
array(['Lee', 'Kyubum', ''], dtype=object)
array(['Leaman', 'Robert', ''], dtype=object)
array(['Lu', 'Zhiyong', ''], dtype=object)]
|
927 |
physics/0310093
|
Giulio Ruffini
|
O. Germain, G. Ruffini, F. Soulat, M. Caparrini, B. Chapron and P.
Silvestrin
|
The GNSS-R Eddy Experiment II: L-band and Optical Speculometry for
Directional Sea-Roughness Retrieval from Low Altitude Aircraft
|
Proceedings from the 2003 Workshop on Oceanography with GNSS
Reflections, Barcelona, Spain, 2003
| null | null |
Paper #12
|
physics.ao-ph physics.geo-ph
| null |
We report on the retrieval of directional sea-roughness (the full directional
mean square slope, including MSS, direction and isotropy) through inversion of
Global Navigation Satellite System Reflections (GNSS-R) and SOlar REflectance
Speculometry (SORES)data collected during an experimental flight at 1000 m. The
emphasis is on the utilization of the entire Delay-Doppler Map (for GNSS-R) or
Tilt Azimuth Map (for SORES) in order to infer these directional parameters.
Obtained estimations are analyzed and compared to Jason-1 measurements and the
ECMWF numerical weather model.
|
[{'version': 'v1', 'created': 'Mon, 20 Oct 2003 09:10:33 GMT'}]
|
2007-05-23
|
[array(['Germain', 'O.', ''], dtype=object)
array(['Ruffini', 'G.', ''], dtype=object)
array(['Soulat', 'F.', ''], dtype=object)
array(['Caparrini', 'M.', ''], dtype=object)
array(['Chapron', 'B.', ''], dtype=object)
array(['Silvestrin', 'P.', ''], dtype=object)]
|
928 |
1203.4412
|
Igor Strakovsky
|
W. Chen (Duke U.), H. Gao (Duke U.), W. J. Briscoe (GW), D. Dutta
(MSU), A. E. Kudryavtsev (ITEP/GW), M. Mirazita (INFN), M. Paris (LANL), P.
Rossi (INFN), S. Stepanyan (JLab), I. I. Strakovsky (GW), V. E. Tarasov
(ITEP), and R. L. Workman (GW)
|
Amplitude analysis of gamma n --> pi- p data above 1 GeV
|
11 pages, 7 figures, 2 tables
| null |
10.1103/PhysRevC.86.015206
| null |
hep-ph hep-ex nucl-ex nucl-th
|
http://creativecommons.org/licenses/by/3.0/
|
We report a new extraction of nucleon resonance couplings using pi-
photoproduction cross sections on the neutron. The world database for the
process gamma n --> pi- p above 1 GeV has quadrupled with the addition of new
differential cross sections from the CEBAF Large Acceptance Spectrometer (CLAS)
at Jefferson Lab in Hall B. Differential cross sections from CLAS have been
improved with a new final-state interaction determination using a diagramatic
technique taking into account the NN and piN final-state interaction
amplitudes. Resonance couplings have been extracted and compared to previous
determinations. With the addition of these new cross sections, significant
changes are seen in the high-energy behavior of the SAID cross sections and
amplitudes.
|
[{'version': 'v1', 'created': 'Tue, 20 Mar 2012 12:44:05 GMT'}
{'version': 'v2', 'created': 'Sun, 1 Apr 2012 18:28:00 GMT'}]
|
2013-05-30
|
[array(['Chen', 'W.', '', 'Duke U.'], dtype=object)
array(['Gao', 'H.', '', 'Duke U.'], dtype=object)
array(['Briscoe', 'W. J.', '', 'GW'], dtype=object)
array(['Dutta', 'D.', '', 'MSU'], dtype=object)
array(['Kudryavtsev', 'A. E.', '', 'ITEP/GW'], dtype=object)
array(['Mirazita', 'M.', '', 'INFN'], dtype=object)
array(['Paris', 'M.', '', 'LANL'], dtype=object)
array(['Rossi', 'P.', '', 'INFN'], dtype=object)
array(['Stepanyan', 'S.', '', 'JLab'], dtype=object)
array(['Strakovsky', 'I. I.', '', 'GW'], dtype=object)
array(['Tarasov', 'V. E.', '', 'ITEP'], dtype=object)
array(['Workman', 'R. L.', '', 'GW'], dtype=object)]
|
929 |
1903.04308
|
Momen Diab
|
Momen Diab (1) and Stefano Minardi (2) ((1) Leibniz-Institute for
Astrophysics Potsdam, Potsdam, Germany, (2) LASOS GmbH, Jena, Germany)
|
Modal analysis using photonic lanterns coupled to arrays of waveguides
|
5 pages, 4 figures, to be published in Optics Letters
|
Opt. Lett. 44, 1718-1721 (2019)
| null | null |
physics.optics astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a new concept of an integrated optics component capable of
measuring the complex amplitudes of the modes at the tip of a multimode
waveguide. The device uses a photonic lantern to split the optical power
carried by an $N$-modes waveguide among a collection of single-mode waveguides
that excite a periodic array of at least $N^2$ single-mode evanescently-coupled
waveguides. The power detected at each output of the array is a linear
combination of the products of the modal amplitudes-a relation that can, under
suitable conditions, be inverted allowing the derivation of the amplitudes and
relative phases of the modal mixture at the input. The expected performance of
the device is discussed and its application to the real-time measurement of
modal instability in high power fiber lasers is proposed.
|
[{'version': 'v1', 'created': 'Mon, 11 Mar 2019 14:05:53 GMT'}
{'version': 'v2', 'created': 'Tue, 12 Mar 2019 12:10:15 GMT'}]
|
2021-03-30
|
[array(['Diab', 'Momen', ''], dtype=object)
array(['Minardi', 'Stefano', ''], dtype=object)]
|
930 |
hep-ph/9502396
|
Shmuel Gurvitz
|
S. A. Gurvitz
|
Confinement and scaling in deep inelastic scattering
|
Discussion of target mass corrections is added. Accepted for
publication in Phys. Rev. D
|
Phys.Rev. D52 (1995) 1433-1444
|
10.1103/PhysRevD.52.1433
|
WIS-95/6/Feb-PH
|
hep-ph nucl-th
| null |
We show that parton confinement in the final state generates large $1/Q^2$
corrections to Bjorken scaling, thus leaving less room for the logarithmic
corrections. In particular, the $x$-scaling violations at large $x$ are
entirely described in terms of power corrections. For treatment of these
non-perturbative effects, we derive a new expansion in powers of $1/Q^2$ for
the structure function that is free of infra-red singularities and which
reduces corrections to the leading term. The leading term represents scattering
from an off-mass-shell parton, which keeps the same virtual mass in the final
state. It is found that this quasi-free term is a function of a new variable
$\bar x$, which coincides with the Bjorken variable $x$ for $Q^2\to\infty$. The
two variables are very different, however, at finite $Q^2$. In particular, the
variable $\bar x$ depends on the invariant mass of the spectator particles.
Analysis of the data at large $x$ shows excellent scaling in the variable $\bar
x$, and determines the value of the diquark mass to be close to zero. $\bar
x$-scaling allows us to extract the structure function near the elastic
threshold. It is found to behave as $F_2\sim (1-x)^{3.7}$. Predictions for the
structure functions based on $\bar x$-scaling are made.
|
[{'version': 'v1', 'created': 'Mon, 27 Feb 1995 16:48:26 GMT'}
{'version': 'v2', 'created': 'Tue, 28 Feb 1995 15:40:00 GMT'}
{'version': 'v3', 'created': 'Mon, 8 May 1995 12:48:09 GMT'}]
|
2009-10-28
|
[array(['Gurvitz', 'S. A.', ''], dtype=object)]
|
931 |
1905.06754
|
Robert Navin PhD
|
Robert L. Navin
|
The Schr\"odinger Equation Describes a Particular Quantum Geometry
| null | null | null | null |
physics.gen-ph quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper posits the existence of, and finds a candidate for, a variable
change that allows quantum mechanics to be interpreted as quantum geometry. The
Bohr model of the Hydrogen atom is thought of in terms of an indeterministic
electron position and a deterministic metric and the motivation for this paper
is to try to change variables to have a deterministic position and momentum for
the electron and nucleus but with an indeterministic (quantum) metric that
reproduces the physics of the Bohr model. This mapping is achieved by allowing
the metric in the Hamiltonian to be different to the metric in the space-time
distance element and then representing the two metrics with vierbeins and
assuming they are canonically conjugate variables. Effectively, the usual
Schr\"odinger space-time variables have been re-interpreted as four of the
potentially sixteen parameters of the metric tensor vierbein in the distance
element while the metric tensor vierbein in the Hamiltonian is an operator
expressible as first-order derivatives in these variables or vice versa. I then
argue that this reproduces observed quantum physics at the sub-atomic level by
demonstrating the energy spectrum of electron orbitals is exactly the same as
the usual relativistic Bohr model for the Hydrogen atom in a certain limit.
Next, by introducing a single dimensionless running coupling that shows up in
the analogous place as, but in addition to, Planck's constant in the commutator
definition I argue that this allows massive objects to couple to the physical
space-time geometry but not massless ones - no matter coupling value. This
claim is based on a fit to the Schwarzschild metric with a few simple
assumptions and thus obtaining an effective theory of how the quantum
geometries at nearby space-time points couple to one another. This demonstrates
that this coupling constant is related to Newton's gravitational constant.
|
[{'version': 'v1', 'created': 'Thu, 2 May 2019 19:27:15 GMT'}]
|
2019-05-17
|
[array(['Navin', 'Robert L.', ''], dtype=object)]
|
932 |
1402.3412
|
Paul Boley
|
Paul A. Boley
|
Infrared interferometry and the study of massive young stellar objects
|
15 pages, 5 figures, in Russian; Physics of Space: Proceedings of the
43rd International Scientific Conference for Students in Kourovka, Russia,
2014
| null | null | null |
astro-ph.SR astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An introduction to the theory and practical aspects of infrared
interferometry is given in the context of the study of massive young stellar
objects. Basic interferometric concepts, as well as observable quantities and
their use, are presented. Recent advancements in interferometric studies of
massive young stellar objects are discussed.
|
[{'version': 'v1', 'created': 'Fri, 14 Feb 2014 09:54:44 GMT'}]
|
2014-02-17
|
[array(['Boley', 'Paul A.', ''], dtype=object)]
|
933 |
1705.07971
|
Alina Czajka
|
Alina Czajka, Sangyong Jeon
|
The shear and bulk relaxation times from the general correlation
functions
|
4 pages, 2 figures, proceedings of XXVIth International Conference on
Ultrarelativistic Nucleus-Nucleus Collisions - Quark Matter 2017
| null |
10.1016/j.nuclphysa.2017.05.082
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we present two quantum field theoretical analyses on the shear
and bulk relaxation times. First, we discuss how to find Kubo formulas for the
shear and the bulk relaxation times. Next, we provide results on the shear
viscosity relaxation time obtained within the diagrammatic approach for the
massless $\lambda\phi^4$ theory.
|
[{'version': 'v1', 'created': 'Mon, 22 May 2017 19:46:37 GMT'}]
|
2018-03-14
|
[array(['Czajka', 'Alina', ''], dtype=object)
array(['Jeon', 'Sangyong', ''], dtype=object)]
|
934 |
0907.1174
|
Marcel van Kessel
|
E.N. Argyres, M.T.M. van Kessel, R.H.P. Kleiss
|
Quantum Extremism: Effective Potential and Extremal Paths
|
11 pages, 4 figures
|
Eur.Phys.J.C65:303-310,2010
|
10.1140/epjc/s10052-009-1179-8
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The reality and convexity of the effective potential in quantum field
theories has been studied extensively in the context of Euclidean space-time.
It has been shown that canonical and path-integral approaches may yield
different results, thus resolving the `convexity problem'. We discuss the
transferral of these treatments to Minkowskian space-time, which also
necessitates a careful discussion of precisely which field configurations give
the dominant contributions to the path integral. In particular, we study the
effective potential for the N=1 linear sigma model.
|
[{'version': 'v1', 'created': 'Tue, 7 Jul 2009 09:39:29 GMT'}]
|
2010-01-06
|
[array(['Argyres', 'E. N.', ''], dtype=object)
array(['van Kessel', 'M. T. M.', ''], dtype=object)
array(['Kleiss', 'R. H. P.', ''], dtype=object)]
|
935 |
2008.11769
|
Bi Li
|
Bi Li, Chengquan Zhang, Zhibin Hong, Xu Tang, Jingtuo Liu, Junyu Han,
Errui Ding, Wenyu Liu
|
Learning Global Structure Consistency for Robust Object Tracking
|
Accepted by ACM MM 2020
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Fast appearance variations and the distractions of similar objects are two of
the most challenging problems in visual object tracking. Unlike many existing
trackers that focus on modeling only the target, in this work, we consider the
\emph{transient variations of the whole scene}. The key insight is that the
object correspondence and spatial layout of the whole scene are consistent
(i.e., global structure consistency) in consecutive frames which helps to
disambiguate the target from distractors. Moreover, modeling transient
variations enables to localize the target under fast variations. Specifically,
we propose an effective and efficient short-term model that learns to exploit
the global structure consistency in a short time and thus can handle fast
variations and distractors. Since short-term modeling falls short of handling
occlusion and out of the views, we adopt the long-short term paradigm and use a
long-term model that corrects the short-term model when it drifts away from the
target or the target is not present. These two components are carefully
combined to achieve the balance of stability and plasticity during tracking. We
empirically verify that the proposed tracker can tackle the two challenging
scenarios and validate it on large scale benchmarks. Remarkably, our tracker
improves state-of-the-art-performance on VOT2018 from 0.440 to 0.460, GOT-10k
from 0.611 to 0.640, and NFS from 0.619 to 0.629.
|
[{'version': 'v1', 'created': 'Wed, 26 Aug 2020 19:12:53 GMT'}]
|
2020-08-28
|
[array(['Li', 'Bi', ''], dtype=object)
array(['Zhang', 'Chengquan', ''], dtype=object)
array(['Hong', 'Zhibin', ''], dtype=object)
array(['Tang', 'Xu', ''], dtype=object)
array(['Liu', 'Jingtuo', ''], dtype=object)
array(['Han', 'Junyu', ''], dtype=object)
array(['Ding', 'Errui', ''], dtype=object)
array(['Liu', 'Wenyu', ''], dtype=object)]
|
936 |
2008.02539
|
Stefano Zippilli
|
Stefano Zippilli, David Vitali
|
Dissipative engineering of Gaussian entangled states in harmonic
lattices with a single-site squeezed reservoir
|
typos corrected
|
Phys. Rev. Lett. 126, 020402 (2021)
|
10.1103/PhysRevLett.126.020402
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the dissipative preparation of many-body entangled Gaussian states
in bosonic lattice models which could be relevant for quantum technology
applications. We assume minimal resources, represented by systems described by
particle-conserving quadratic Hamiltonians, with a single localized squeezed
reservoir. We show that in this way it is possible to prepare, in the steady
state, the wide class of pure states which can be generated by applying a
generic passive Gaussian transformation on a set of equally squeezed modes.
This includes non-trivial multipartite entangled states such as cluster states
suitable for measurement-based quantum computation.
|
[{'version': 'v1', 'created': 'Thu, 6 Aug 2020 09:36:06 GMT'}
{'version': 'v2', 'created': 'Fri, 8 Jan 2021 22:56:22 GMT'}
{'version': 'v3', 'created': 'Wed, 3 Mar 2021 11:59:20 GMT'}]
|
2021-03-04
|
[array(['Zippilli', 'Stefano', ''], dtype=object)
array(['Vitali', 'David', ''], dtype=object)]
|
937 |
1511.05587
|
Zbigniew Lipi\'nski
|
Zbigniew Lipi\'nski
|
Maximum lifetime broadcasting problem in sensor networks
|
11 pages, 3 figures
| null | null | null |
cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We solve the maximum lifetime problem for the point-to-point and
point-to-multipoint broadcast data transmission in one dimensional regular
sensor network. Based on the analytical solution of the problem for one
dimension we propose an algorithm solving the maximum lifetime broadcasting
problem for point-to-point data transmission for any dimension.
|
[{'version': 'v1', 'created': 'Tue, 17 Nov 2015 21:19:52 GMT'}]
|
2015-11-19
|
[array(['Lipiński', 'Zbigniew', ''], dtype=object)]
|
938 |
2004.11898
|
Nathaniel Bastian PhD
|
Elie Alhajjar and Paul Maxwell and Nathaniel D. Bastian
|
Adversarial Machine Learning in Network Intrusion Detection Systems
|
25 pages, 6 figures, 4 tables
| null | null | null |
cs.CR cs.LG cs.NE stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Adversarial examples are inputs to a machine learning system intentionally
crafted by an attacker to fool the model into producing an incorrect output.
These examples have achieved a great deal of success in several domains such as
image recognition, speech recognition and spam detection. In this paper, we
study the nature of the adversarial problem in Network Intrusion Detection
Systems (NIDS). We focus on the attack perspective, which includes techniques
to generate adversarial examples capable of evading a variety of machine
learning models. More specifically, we explore the use of evolutionary
computation (particle swarm optimization and genetic algorithm) and deep
learning (generative adversarial networks) as tools for adversarial example
generation. To assess the performance of these algorithms in evading a NIDS, we
apply them to two publicly available data sets, namely the NSL-KDD and
UNSW-NB15, and we contrast them to a baseline perturbation method: Monte Carlo
simulation. The results show that our adversarial example generation techniques
cause high misclassification rates in eleven different machine learning models,
along with a voting classifier. Our work highlights the vulnerability of
machine learning based NIDS in the face of adversarial perturbation.
|
[{'version': 'v1', 'created': 'Thu, 23 Apr 2020 19:47:43 GMT'}]
|
2020-04-28
|
[array(['Alhajjar', 'Elie', ''], dtype=object)
array(['Maxwell', 'Paul', ''], dtype=object)
array(['Bastian', 'Nathaniel D.', ''], dtype=object)]
|
939 |
astro-ph/9712360
|
Jonathan E. Grindlay
|
Jonathan E. Grindlay
|
Surveying the Hard X-ray Sky: Imaging in Space and Time
|
4 pages lates (uses an98-art.sty, an96-post.sty, epsf.sty) plus 2
postscript figures
| null |
10.1002/asna.2123190160
|
invited talk presented at Potsdam Workshop on X-ray Surveys; to be
published in Astron. Nachr., vol. 319 (1998)
|
astro-ph
| null |
One of the few remaining astronomical bands (factor of $\sim$10 in energy
range) still without an all-sky imaging survey is the hard x-ray band (10-600
keV). This is in spite of sensitive imaging all-sky surveys already conducted
at soft x-ray energies (0.2-2 keV; ROSAT) and soft/hard $\gamma$-ray ($\sim$750
keV - 10 GeV; COMPTEL/EGRET) energies and imminent for medium x-ray energies
(2- 10 keV; ABRIXAS). A Hard x-ray imaging survey conducted with wide-field
coded aperture telescopes allows both high sensitivity (and spatial/spectral
resolution) and broad temporal coverage. We derive a generalized survey
sensitivity/temporal parameter, Q, and compare previous and planned hard x-ray
surveys with the proposed EXIST mission. Key scientific objectives that could
be addressed with the enhanced capability of EXIST are outlined.
|
[{'version': 'v1', 'created': 'Thu, 1 Jan 1998 00:41:02 GMT'}]
|
2015-06-24
|
[array(['Grindlay', 'Jonathan E.', ''], dtype=object)]
|
940 |
0805.2606
|
Finn Ravndal
|
Finn Ravndal
|
Electromagnetic energy-momentum tensors in media
|
12 pages, LaTeX; minor text improvements
| null | null | null |
hep-ph physics.hist-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is pointed out that the previous energy-momentum tensors of Minkowski and
Abraham for the electromagnetic field in continuous media are based on a
covariant formulation which does not reflect a symmetry inherent to the system.
Instead, taking into account the intrinsic invariance under Lorentz
transformations involving the reduced speed of light in such a medium, a
compact and fully consistent theory can be formulated without the old problems.
|
[{'version': 'v1', 'created': 'Fri, 16 May 2008 19:24:09 GMT'}
{'version': 'v2', 'created': 'Tue, 30 Sep 2008 13:57:44 GMT'}]
|
2008-09-30
|
[array(['Ravndal', 'Finn', ''], dtype=object)]
|
941 |
1608.01209
|
Luca Guido Molinari
|
Carlo Alberto Mantica and Luca Guido Molinari
|
On the Weyl and Ricci tensors of Generalized Robertson-Walker
space-times
|
6 pages
|
J. Math. Phys. 57, 102502 (2016)
|
10.1063/1.4965714
| null |
math-ph gr-qc math.DG math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove theorems about the Ricci and the Weyl tensors on generalized
Robertson-Walker space-times of dimension $n\ge 3$. In particular, we show that
the concircular vector introduced by Chen decomposes the Ricci tensor as a
perfect fluid term plus a term linear in the contracted Weyl tensor. The Weyl
tensor is harmonic if and only if it is annihilated by Chen's vector, and any
of the two conditions is necessary and sufficient for the GRW space-time to be
a quasi-Einstein (perfect fluid) manifold. Finally, the general structure of
the Riemann tensor for Robertson-Walker space-times is given, in terms of
Chen's vector. A GRW space-time in n = 4 with null conformal divergence is a
Robertson-Walker space-time.
|
[{'version': 'v1', 'created': 'Wed, 3 Aug 2016 14:52:38 GMT'}]
|
2016-10-24
|
[array(['Mantica', 'Carlo Alberto', ''], dtype=object)
array(['Molinari', 'Luca Guido', ''], dtype=object)]
|
942 |
1110.3947
|
Philipp Hoehn
|
Philipp A. Hoehn
|
Canonical formalism for simplicial gravity
|
4 pages, 5 figures, based on a talk given at Loops '11 in Madrid, to
appear in Journal of Physics: Conference Series (JPCS)
| null |
10.1088/1742-6596/360/1/012047
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We summarise a recently introduced general canonical formulation of discrete
systems which is fully equivalent to the covariant formalism. This framework
can handle varying phase space dimensions and is applied to simplicial gravity
in particular.
|
[{'version': 'v1', 'created': 'Tue, 18 Oct 2011 12:03:51 GMT'}]
|
2015-05-30
|
[array(['Hoehn', 'Philipp A.', ''], dtype=object)]
|
943 |
2110.02184
|
Rongyan Chen
|
J. L. Liu, R. Liu, M. Yang, L. Y. Cao, B. X. Gao, L. Wang, A. F. Fang,
Y. G. Shi, Z. P. Yin, and R. Y. Chen
|
Revealing a charge-density-wave gap in the predicted weak topological
insulator HoSbTe
| null |
Phys. Rev. B 105, 075111 (2022)
|
10.1103/PhysRevB.105.075111
| null |
cond-mat.str-el
|
http://creativecommons.org/licenses/by/4.0/
|
HoSbTe was predicted to be a weak topological insulator, whose spin-orbit
coupling (SOC) gaps are reported to be as large as hundreds of meV. Utilizing
infrared spectroscopy, we find that the compound is of metallic nature from 350
K down to 10 K. Particularly, both of its itinerant carrier density and
scattering rate are demonstrated to decrease with temperature cooling, which is
responsible for the appearance of a broad hump feature in the temperature
dependent resistivity around 200 K. More importantly, we reveal the appearance
of a charge density wave (CDW) gap in addition to the SOC related gap. The
energy scale of the CDW gap is identified to be 364 meV at 10 K, which shift to
252 meV at 350 K. The coexistence of CDW and SOC gaps in the same compound
paves a new avenue to explore more intriguing physics.
|
[{'version': 'v1', 'created': 'Tue, 5 Oct 2021 17:23:29 GMT'}]
|
2022-06-15
|
[array(['Liu', 'J. L.', ''], dtype=object)
array(['Liu', 'R.', ''], dtype=object)
array(['Yang', 'M.', ''], dtype=object)
array(['Cao', 'L. Y.', ''], dtype=object)
array(['Gao', 'B. X.', ''], dtype=object)
array(['Wang', 'L.', ''], dtype=object)
array(['Fang', 'A. F.', ''], dtype=object)
array(['Shi', 'Y. G.', ''], dtype=object)
array(['Yin', 'Z. P.', ''], dtype=object)
array(['Chen', 'R. Y.', ''], dtype=object)]
|
944 |
2110.15648
|
Gianluca Crippa
|
Gianluca Crippa and Giorgio Stefani
|
An elementary proof of existence and uniqueness for the Euler flow in
localized Yudovich spaces
|
28 pages
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We revisit Yudovich's well-posedness result for the $2$-dimensional Euler
equations for an inviscid incompressible fluid on either a sufficiently regular
(not necessarily bounded) open set $\Omega\subset\mathbb{R}^2$ or on the torus
$\Omega=\mathbb{T}^2$.
We construct global-in-time weak solutions with vorticity in $L^1\cap
L^p_{\mathrm{ul}}$ and in $L^1\cap Y^\Theta_{\mathrm{ul}}$, where
$L^p_{\mathrm{ul}}$ and $Y^\Theta_{\mathrm{ul}}$ are suitable
uniformly-localized versions of the Lebesgue space $L^p$ and of the Yudovich
space $Y^\Theta$ respectively, with no condition at infinity for the growth
function $\Theta$. We also provide an explicit modulus of continuity for the
velocity depending on the growth function $\Theta$. We prove uniqueness of weak
solutions in $L^1\cap Y^\Theta_{\mathrm{ul}}$ under the assumption that
$\Theta$ grows moderately at infinity. In contrast to Yudovich's energy method,
we employ a Lagrangian strategy to show uniqueness.
Our entire argument relies on elementary real-variable techniques, with no
use of either Sobolev spaces, Calder\'on-Zygmund theory or Littlewood-Paley
decomposition, and actually applies not only to the Biot-Savart law, but also
to more general operators whose kernels obey some natural structural
assumptions.
|
[{'version': 'v1', 'created': 'Fri, 29 Oct 2021 09:45:27 GMT'}
{'version': 'v2', 'created': 'Wed, 15 Dec 2021 10:51:45 GMT'}
{'version': 'v3', 'created': 'Thu, 11 May 2023 08:39:38 GMT'}]
|
2023-05-12
|
[array(['Crippa', 'Gianluca', ''], dtype=object)
array(['Stefani', 'Giorgio', ''], dtype=object)]
|
945 |
1801.07244
|
Marius Nann
|
M. Nann, L. G. Cohen, L. Deecke, S. R. Soekadar
|
To jump or not to jump: The Bereitschaftspotential required to jump into
192-meter abyss
| null | null | null | null |
q-bio.NC
|
http://creativecommons.org/licenses/by/4.0/
|
Self-initiated voluntary acts, such as pressing a button, are preceded by a
negative electrical brain potential, the Bereitschaftspotential (BP), that can
be recorded over the human scalp using electroencephalography (EEG). Up to now,
the BP required to initiate voluntary acts has only been recorded under
well-controlled laboratory conditions. It is thus not known if this form of
brain activity also underlies motor initiation in possible life-threatening
decision making, such as jumping into a 192-meter abyss, an act requiring
extraordinary willpower. Here, we report BP before self-initiated 192-meter
extreme bungee jumping across two semi-professional cliff divers (both male,
mean age 19.3 years). We found that the spatiotemporal dynamics of the BP is
comparable to that recorded under laboratory conditions. These results,
possible through recent advancements in wireless and portable EEG technology,
document for the first time pre-movement brain activity preceding possible
life-threatening decision making.
|
[{'version': 'v1', 'created': 'Mon, 22 Jan 2018 18:59:37 GMT'}]
|
2018-01-23
|
[array(['Nann', 'M.', ''], dtype=object)
array(['Cohen', 'L. G.', ''], dtype=object)
array(['Deecke', 'L.', ''], dtype=object)
array(['Soekadar', 'S. R.', ''], dtype=object)]
|
946 |
0905.3019
|
Eckhard Hitzer
|
Eckhard Hitzer, Rafal Ablamowicz
|
Geometric Roots of -1 in Clifford Algebras $\G_{p,q}$ with $p+q \leq 4$
|
25 pages, detailed calculations, first presented at ICCA8, Las
Campinas, Brazil
| null | null |
TTU, Dep. of Mathematics, Tech. Rep. 2009-3
|
math.RA math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is known that Clifford (geometric) algebra offers a geometric
interpretation for square roots of -1 in the form of blades that square to
minus 1. This extends to a geometric interpretation of quaternions as the side
face bivectors of a unit cube. Research has been done [S. J. Sangwine,
Biquaternion (Complexified Quaternion) Roots of -1, Adv. Appl. Cliford Alg.
16(1), pp. 63-68, 2006.] on the biquaternion roots of -1, abandoning the
restriction to blades. Biquaternions are isomorphic to the Clifford (geometric)
algebra $Cl_{3}$ of $\R^3$. All these roots of -1 find immediate applications
in the construction of new types of geometric Clifford Fourier transformations.
We now extend this research to general algebras $Cl_{p,q}$. We fully derive
the geometric roots of -1 for the Clifford (geometric) algebras with $p+q \leq
4$.
|
[{'version': 'v1', 'created': 'Tue, 19 May 2009 04:32:11 GMT'}]
|
2009-05-20
|
[array(['Hitzer', 'Eckhard', ''], dtype=object)
array(['Ablamowicz', 'Rafal', ''], dtype=object)]
|
947 |
math/0108116
|
Siddhartha Gadgil
|
Siddhartha Gadgil (SUNY Stony Brook), Gadde A. Swarup (University of
Melbourne)
|
A proof of a homeomorphism theorem of Waldhausen
|
2 pages
| null | null | null |
math.GT
| null |
We give a short proof of Waldhausen's homeomorphism theorem for orientable
Haken 3-manifolds.
|
[{'version': 'v1', 'created': 'Fri, 17 Aug 2001 00:21:50 GMT'}]
|
2007-05-23
|
[array(['Gadgil', 'Siddhartha', '', 'SUNY Stony Brook'], dtype=object)
array(['Swarup', 'Gadde A.', '', 'University of\n Melbourne'],
dtype=object) ]
|
948 |
1103.5913
|
Stephane Girard
|
St\'ephane Girard and Anatoli Iouditski and Alexander Nazin
|
Linear programming problems for l_1- optimal frontier estimation
| null |
S. Girard, A. Iouditski & A. Nazin. "L1-optimal frontier
estimation via linear programming", Automation and Remote Control, 66(12),
2000-2018, 2005
| null | null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose new optimal estimators for the Lipschitz frontier of a set of
points. They are defined as kernel estimators being sufficiently regular,
covering all the points and whose associated support is of smallest surface.
The estimators are written as linear combinations of kernel functions applied
to the points of the sample. The coefficients of the linear combination are
then computed by solving related linear programming problem. The L_1 error
between the estimated and the true frontier function with a known Lipschitz
constant is shown to be almost surely converging to zero, and the rate of
convergence is proved to be optimal.
|
[{'version': 'v1', 'created': 'Wed, 30 Mar 2011 13:11:12 GMT'}]
|
2011-03-31
|
[array(['Girard', 'Stéphane', ''], dtype=object)
array(['Iouditski', 'Anatoli', ''], dtype=object)
array(['Nazin', 'Alexander', ''], dtype=object)]
|
949 |
0902.3442
|
Matthew McQuinn
|
Matthew McQuinn (Harvard/CFA), Joshua S. Bloom (UC Berkeley), Jonathan
Grindlay (Harvard/CFA), David Band (GSFC), S.D. Barthelmy (GSFC), E. Berger
(Harvard-CfA), A. Corsi (INAF-Roma), S. Covino (INAF-Brera), G.J. Fishman
(MSFC), Steven R. Furlanetto (UCLA), Neil Gehrels (GSFC), D.H. Hartmann
(Clemson), Chryssa Kouveliotou (MSFC), A.S. Kutyrev (GSFC), Abraham Loeb
(Harvard/CfA), S. Harvey Moseley (GSFC), Tsvi Piran (Racah Inst.), L. Piro
(INAF-Rome), J.X. Prochaska (UCSC), R. Salvaterra (INAF-Brera), P. Schady
(University College London-MSSL), A. M. Soderberg (Harvard-CFA), G.
Tagliaferri (INAF-Brera)
|
In Situ Probes of the First Galaxies and Reionization: Gamma-ray Bursts
|
8 pages, 3 figures, science white paper submitted to the US Astro2010
Decadal Survey
| null | null | null |
astro-ph.CO astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The first structures in the Universe formed at z>7, at higher redshift than
all currently known galaxies. Since GRBs are brighter than other cosmological
sources at high redshift and exhibit simple power-law afterglow spectra that is
ideal for absorption studies, they serve as powerful tools for studying the
early universe. New facilities planned for the coming decade will be able to
obtain a large sample of high-redshift GRBs. Such a sample would constrain the
nature of the first stars, galaxies, and the reionization history of the
Universe.
|
[{'version': 'v1', 'created': 'Thu, 19 Feb 2009 19:38:38 GMT'}]
|
2009-02-20
|
[array(['McQuinn', 'Matthew', '', 'Harvard/CFA'], dtype=object)
array(['Bloom', 'Joshua S.', '', 'UC Berkeley'], dtype=object)
array(['Grindlay', 'Jonathan', '', 'Harvard/CFA'], dtype=object)
array(['Band', 'David', '', 'GSFC'], dtype=object)
array(['Barthelmy', 'S. D.', '', 'GSFC'], dtype=object)
array(['Berger', 'E.', '', 'Harvard-CfA'], dtype=object)
array(['Corsi', 'A.', '', 'INAF-Roma'], dtype=object)
array(['Covino', 'S.', '', 'INAF-Brera'], dtype=object)
array(['Fishman', 'G. J.', '', 'MSFC'], dtype=object)
array(['Furlanetto', 'Steven R.', '', 'UCLA'], dtype=object)
array(['Gehrels', 'Neil', '', 'GSFC'], dtype=object)
array(['Hartmann', 'D. H.', '', 'Clemson'], dtype=object)
array(['Kouveliotou', 'Chryssa', '', 'MSFC'], dtype=object)
array(['Kutyrev', 'A. S.', '', 'GSFC'], dtype=object)
array(['Loeb', 'Abraham', '', 'Harvard/CfA'], dtype=object)
array(['Moseley', 'S. Harvey', '', 'GSFC'], dtype=object)
array(['Piran', 'Tsvi', '', 'Racah Inst.'], dtype=object)
array(['Piro', 'L.', '', 'INAF-Rome'], dtype=object)
array(['Prochaska', 'J. X.', '', 'UCSC'], dtype=object)
array(['Salvaterra', 'R.', '', 'INAF-Brera'], dtype=object)
array(['Schady', 'P.', '', 'University College London-MSSL'], dtype=object)
array(['Soderberg', 'A. M.', '', 'Harvard-CFA'], dtype=object)
array(['Tagliaferri', 'G.', '', 'INAF-Brera'], dtype=object)]
|
950 |
2208.12545
|
Guanzhou Ke
|
Guanzhou Ke, Yongqi Zhu, Yang Yu
|
MORI-RAN: Multi-view Robust Representation Learning via Hybrid
Contrastive Fusion
|
8 pages, 3 figures
|
ICDM 2022 workshop
|
10.1109/ICDMW58026.2022.00068
| null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
Multi-view representation learning is essential for many multi-view tasks,
such as clustering and classification. However, there are two challenging
problems plaguing the community: i)how to learn robust multi-view
representation from mass unlabeled data and ii) how to balance the view
consistency and the view specificity. To this end, in this paper, we proposed a
hybrid contrastive fusion algorithm to extract robust view-common
representation from unlabeled data. Specifically, we found that introducing an
additional representation space and aligning representations on this space
enables the model to learn robust view-common representations. At the same
time, we designed an asymmetric contrastive strategy to ensure that the model
does not obtain trivial solutions. Experimental results demonstrated that the
proposed method outperforms 12 competitive multi-view methods on four
real-world datasets in terms of clustering and classification. Our source code
will be available soon at \url{https://github.com/guanzhou-ke/mori-ran}.
|
[{'version': 'v1', 'created': 'Fri, 26 Aug 2022 09:58:37 GMT'}
{'version': 'v2', 'created': 'Tue, 30 Aug 2022 08:54:35 GMT'}]
|
2023-02-28
|
[array(['Ke', 'Guanzhou', ''], dtype=object)
array(['Zhu', 'Yongqi', ''], dtype=object)
array(['Yu', 'Yang', ''], dtype=object)]
|
951 |
1802.01811
|
Jian-Hua Jiang
|
Fei-Fei Li, Hai-Xiao Wang, Zhan Xiong, Qun Lou, Ping Chen, Rui-Xin Wu,
Yin Poo, Jian-Hua Jiang, Sajeev John
|
Topological light-trapping on a dislocation
| null |
Nature Communications 9, 2462 (2018)
|
10.1038/s41467-018-04861-x
| null |
physics.optics cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Topology has been revealed to play a fundamental role in physics in the past
decades. Topological insulators have unconventional gapless edge states where
disorder-induced back-scattering is suppressed. In photonics, such edge states
lead to unidirectional waveguides which are useful for integrated photonic
chips. Cavity modes, another type of fundamental components in photonic chips,
however, are not protected by band topology because of their lower dimensions.
Here we demonstrate that concurrent wavevector-space and real-space topology,
dubbed as the "dual-topology", can lead to light-trapping in lower-dimensions.
The resultant photonic bound state emerges as a Jackiw-Rebbi soliton mode
localized on a dislocation in a two-dimensional (2D) photonic crystal, as
predicted theoretically and discovered experimentally. Such a strongly-confined
0D localized mode, which is solely due to the topological mechanism, is found
to be robust against perturbations. Our study unveils a new mechanism for
topological light-trapping in lower-dimensions, which is valuable for
fundamental physics and a variety of applications in photonics.
|
[{'version': 'v1', 'created': 'Tue, 6 Feb 2018 06:15:02 GMT'}]
|
2018-07-04
|
[array(['Li', 'Fei-Fei', ''], dtype=object)
array(['Wang', 'Hai-Xiao', ''], dtype=object)
array(['Xiong', 'Zhan', ''], dtype=object)
array(['Lou', 'Qun', ''], dtype=object)
array(['Chen', 'Ping', ''], dtype=object)
array(['Wu', 'Rui-Xin', ''], dtype=object)
array(['Poo', 'Yin', ''], dtype=object)
array(['Jiang', 'Jian-Hua', ''], dtype=object)
array(['John', 'Sajeev', ''], dtype=object)]
|
952 |
2011.13065
|
Elio Marconi
|
Elio Marconi
|
Rectifiability of entropy defect measures in a micromagnetics model
| null | null |
10.1515/acv-2021-0012
| null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the fine properties of a class of weak solutions $u$ of the eikonal
equation arising as asymptotic domain of a family of energy functionals
introduced in (Rivi\`ere T, Serfaty S. Limiting domain wall energy for a
problem related to micromagnetics. Comm Pure Appl Math 2001; 54(3):294-338). In
particular we prove that the entropy defect measure associated to $u$ is
concentrated on a 1-rectifiable set, which detects the jump-type
discontinuities of $u$.
|
[{'version': 'v1', 'created': 'Wed, 25 Nov 2020 23:40:29 GMT'}]
|
2021-12-20
|
[array(['Marconi', 'Elio', ''], dtype=object)]
|
953 |
1912.02253
|
Alexander Rothkopf
|
Alexander Rothkopf
|
Heavy Quarkonium in Extreme Conditions
|
129 pages, 55 figures, submitted to Physics Reports on July 23rd 2019
| null |
10.1016/j.physrep.2020.02.006
| null |
hep-ph hep-lat nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this report we review recent progress achieved in the understanding of
heavy quarkonium under extreme conditions from a theory perspective. Its focus
lies both on quarkonium properties in thermal equilibrium, as well as recent
developments towards a genuine real-time description, valid also
out-of-equilibrium. We will give an overview of the theory tools developed and
deployed over the last decade, including effective field theories, lattice
field theory simulations, modern methods for spectral reconstructions and the
the open-quantum systems paradigm. The report will discuss in detail the
concept of quarkonium melting, providing the reader with a contemporary
perspective. In order to judge where future progress is needed we will also
discuss recent results from experiments and phenomenological modeling of
quarkonium in relativistic heavy-ion collisions.
|
[{'version': 'v1', 'created': 'Wed, 4 Dec 2019 21:33:39 GMT'}]
|
2020-05-20
|
[array(['Rothkopf', 'Alexander', ''], dtype=object)]
|
954 |
2006.04444
|
Long Zhang
|
Long Zhang, Brice Morin, Benoit Baudry, and Martin Monperrus
|
Maximizing Error Injection Realism for Chaos Engineering with System
Calls
| null |
IEEE Transactions on Dependable and Secure Computing, 2021
|
10.1109/TDSC.2021.3069715
| null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we present a novel fault injection framework for system call
invocation errors, called Phoebe. Phoebe is unique as follows. First, Phoebe
enables developers to have full observability of system call invocations.
Second, Phoebe generates error models that are realistic in the sense that they
mimic errors that naturally happen in production. Third, Phoebe is able to
automatically conduct experiments to systematically assess the reliability of
applications with respect to system call invocation errors in production. We
evaluate the effectiveness and runtime overhead of Phoebe on two real-world
applications in a production environment. The results show that Phoebe
successfully generates realistic error models and is able to detect important
reliability weaknesses with respect to system call invocation errors. To our
knowledge, this novel concept of "realistic error injection", which consists of
grounding fault injection on production errors, has never been studied before.
|
[{'version': 'v1', 'created': 'Mon, 8 Jun 2020 09:59:54 GMT'}
{'version': 'v2', 'created': 'Mon, 15 Jun 2020 13:04:33 GMT'}
{'version': 'v3', 'created': 'Sat, 5 Sep 2020 14:27:24 GMT'}
{'version': 'v4', 'created': 'Tue, 26 Jan 2021 13:42:35 GMT'}
{'version': 'v5', 'created': 'Fri, 19 Mar 2021 12:37:46 GMT'}
{'version': 'v6', 'created': 'Wed, 31 Mar 2021 11:28:14 GMT'}
{'version': 'v7', 'created': 'Fri, 2 Apr 2021 09:29:05 GMT'}]
|
2021-04-05
|
[array(['Zhang', 'Long', ''], dtype=object)
array(['Morin', 'Brice', ''], dtype=object)
array(['Baudry', 'Benoit', ''], dtype=object)
array(['Monperrus', 'Martin', ''], dtype=object)]
|
955 |
0707.2299
|
Raul Horvat
|
Raul Horvat, Diego Pavon
|
Constraining interacting dark energy models with flux destabilization
|
12 pages, minor correction, to appear in Physics Letters B
|
Phys.Lett.B653:373-377,2007
|
10.1016/j.physletb.2007.07.058
| null |
gr-qc astro-ph hep-th
| null |
A destabilization in the transfer energy flux from the vacuum to radiation,
for two vacuum decay laws relevant to the dark energy problem, is analyzed
using the Landau-Lifshitz fluctuation hydrodynamic theory. Assuming thermal (or
near thermal) equilibrium between the vacuum and radiation, at the earliest
epoch of the Universe expansion, we show that the law due to
renormalization-group running of the cosmological constant term, with
parameters chosen not to spoil the primordial nucleosynthesis scenario, does
soon drive the flux to fluctuate beyond its statistical average value thereby
distorting the cosmic background radiation spectrum beyond observational
limits. While the law coming from the saturated holographic dark energy does
not lead the flux to wildly fluctuate, a more realistic non--saturated form
shows again such anomalous behavior.
|
[{'version': 'v1', 'created': 'Mon, 16 Jul 2007 10:46:48 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Aug 2007 14:31:51 GMT'}]
|
2008-11-26
|
[array(['Horvat', 'Raul', ''], dtype=object)
array(['Pavon', 'Diego', ''], dtype=object)]
|
956 |
2109.08502
|
Mauro Pastore
|
Mauro Pastore
|
Critical properties of the SAT/UNSAT transitions in the classification
problem of structured data
|
20 pages + appendices, 8 figures
|
J. Stat. Mech. (2021) 113301
|
10.1088/1742-5468/ac312b
| null |
cond-mat.dis-nn cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The classification problem of structured data can be solved with different
strategies: a supervised learning approach, starting from a labeled training
set, and an unsupervised learning one, where only the structure of the patterns
in the dataset is used to find a classification compatible with it. The two
strategies can be interpreted as extreme cases of a semi-supervised approach to
learn multi-view data, relevant for applications. In this paper I study the
critical properties of the two storage problems associated with these tasks, in
the case of the linear binary classification of doublets of points sharing the
same label, within replica theory. While the first approach presents a
SAT/UNSAT transition in a (marginally) stable replica-symmetric phase, in the
second one the satisfiability line lies in a full replica-symmetry-broken
phase. A similar behavior in the problem of learning with a margin is also
pointed out.
|
[{'version': 'v1', 'created': 'Fri, 17 Sep 2021 12:27:19 GMT'}
{'version': 'v2', 'created': 'Mon, 8 Nov 2021 15:59:31 GMT'}]
|
2021-11-09
|
[array(['Pastore', 'Mauro', ''], dtype=object)]
|
957 |
1702.04318
|
Andr\'es Pedroza
|
Andr\'es Pedroza
|
Non-Hamiltonian isotopic Lagrangians on the one-point blow-up of CP^2
|
The article presented a crucial mistake. The corrected version
appears in arXiv:1904.04353
| null | null | null |
math.SG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that two Hamiltonian isotopic Lagrangians in
(CP^2,\omega_\textup{FS}) induce two Lagrangian submanifolds in the one-point
blow-up (\widetilde{CP}^2,\widetilde{\omega}_\rho) that are not Hamiltonian
isotopic. Furthermore, we show that for any integer k>1 there are k Hamiltonian
isotopic Lagrangians in (CP^2,\omega_\textup{FS}) that induce k Lagrangian
submanifolds in the one-point blow-up such that no two of them are Hamiltonian
isotopic.
|
[{'version': 'v1', 'created': 'Tue, 14 Feb 2017 18:12:47 GMT'}
{'version': 'v2', 'created': 'Thu, 11 Apr 2019 19:04:50 GMT'}]
|
2019-04-15
|
[array(['Pedroza', 'Andrés', ''], dtype=object)]
|
958 |
2304.07047
|
Ciaran Eising
|
Mena Nagiub, Thorsten Beuth, Ganesh Sistu, Heinrich Gotzig, Ciar \'an
Eising
|
Near Field iToF LIDAR Depth Improvement from Limited Number of Shots
| null |
Proceedings of the 2023 IEEE 97th Vehicular Technology Conference
(VTC2023-Spring)
| null | null |
cs.RO cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
Indirect Time of Flight LiDARs can indirectly calculate the scene's depth
from the phase shift angle between transmitted and received laser signals with
amplitudes modulated at a predefined frequency. Unfortunately, this method
generates ambiguity in calculated depth when the phase shift angle value
exceeds $2\pi$. Current state-of-the-art methods use raw samples generated
using two distinct modulation frequencies to overcome this ambiguity problem.
However, this comes at the cost of increasing laser components' stress and
raising their temperature, which reduces their lifetime and increases power
consumption. In our work, we study two different methods to recover the entire
depth range of the LiDAR using fewer raw data sample shots from a single
modulation frequency with the support of sensor's gray scale output to reduce
the laser components' stress and power consumption.
|
[{'version': 'v1', 'created': 'Fri, 14 Apr 2023 10:44:59 GMT'}]
|
2023-04-17
|
[array(['Nagiub', 'Mena', ''], dtype=object)
array(['Beuth', 'Thorsten', ''], dtype=object)
array(['Sistu', 'Ganesh', ''], dtype=object)
array(['Gotzig', 'Heinrich', ''], dtype=object)
array(['Eising', 'Ciar án', ''], dtype=object)]
|
959 |
2206.04625
|
Anubhav Bhatti
|
Anubhav Bhatti, Behnam Behinaein, Paul Hungler, Ali Etemad
|
AttX: Attentive Cross-Connections for Fusion of Wearable Signals in
Emotion Recognition
|
13 pages, 8 figures
| null | null | null |
cs.LG cs.CV eess.SP
|
http://creativecommons.org/licenses/by-sa/4.0/
|
We propose cross-modal attentive connections, a new dynamic and effective
technique for multimodal representation learning from wearable data. Our
solution can be integrated into any stage of the pipeline, i.e., after any
convolutional layer or block, to create intermediate connections between
individual streams responsible for processing each modality. Additionally, our
method benefits from two properties. First, it can share information
uni-directionally (from one modality to the other) or bi-directionally. Second,
it can be integrated into multiple stages at the same time to further allow
network gradients to be exchanged in several touch-points. We perform extensive
experiments on three public multimodal wearable datasets, WESAD, SWELL-KW, and
CASE, and demonstrate that our method can effectively regulate and share
information between different modalities to learn better representations. Our
experiments further demonstrate that once integrated into simple CNN-based
multimodal solutions (2, 3, or 4 modalities), our method can result in superior
or competitive performance to state-of-the-art and outperform a variety of
baseline uni-modal and classical multimodal methods.
|
[{'version': 'v1', 'created': 'Thu, 9 Jun 2022 17:18:33 GMT'}]
|
2022-06-10
|
[array(['Bhatti', 'Anubhav', ''], dtype=object)
array(['Behinaein', 'Behnam', ''], dtype=object)
array(['Hungler', 'Paul', ''], dtype=object)
array(['Etemad', 'Ali', ''], dtype=object)]
|
960 |
1910.07722
|
Hossein Vahid Alizadeh
|
Hossein Vahid Alizadeh, Michael G. Fanton, August G. Domel, Gerald
Grant, David Benjamin Camarillo
|
Prevention of Traumatic Brain Injury with Liquid Shock Absorption
| null | null | null | null |
q-bio.QM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The discovery that repetitive mild traumatic brain injury (mTBI) can result
in chronic traumatic encephalopathy (CTE) in high risk contact sports has led
to increased scrutiny of head protective gear. In this work, we asked if it was
physically possible to prevent mTBI in American football with helmets alone.
Here, we show that modern helmets of several types are unlikely to prevent mTBI
from high speed collisions as might be seen in the NFL, but that introducing
liquid as an energy absorbing medium can dramatically reduce the forces of
impact across a spectrum of impact severities. We hypothesized that a helmet
which transmits a nearly constant force during football impacts is sufficient
to reduce biomechanical loading in the brain below the threshold of mTBI. To
test this hypothesis, we first show that the optimal impact force transmitted
to the head, in terms of brain strain, is in fact a constant force profile.
Then, to generate a constant force with a helmet, we implement a computational
model of a fluid-based shock absorber that adapts passively to any given impact
speed. Computer simulation of head impacts with liquid shock absorption
indicate that, at the highest impact speed, the average brain tissue strain is
reduced by 27.6% $\pm$ 9.3 compared to existing helmet padding that is
available on the market. These simulations are based on the NFL's helmet test
protocol and predict that adding liquid shock absorbers could reduce the number
of concussions by at least 75%. Taken together, these results suggest that the
majority of mTBI in football could be prevented with more efficient helmet
technology.
|
[{'version': 'v1', 'created': 'Thu, 17 Oct 2019 05:47:17 GMT'}]
|
2019-10-18
|
[array(['Alizadeh', 'Hossein Vahid', ''], dtype=object)
array(['Fanton', 'Michael G.', ''], dtype=object)
array(['Domel', 'August G.', ''], dtype=object)
array(['Grant', 'Gerald', ''], dtype=object)
array(['Camarillo', 'David Benjamin', ''], dtype=object)]
|
961 |
1007.0861
|
Jan de Gier
|
Jan de Gier, Alain Lascoux and Mark Sorrell
|
Deformed Kazhdan-Lusztig elements and Macdonald polynomials
|
major revision, 29 pages, 22 eps figures
|
J. Alg. Comb. Theory A 119 (2012), 183-211
| null | null |
math.CO math-ph math.MP math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce deformations of Kazhdan-Lusztig elements and specialised
nonsymmetric Macdonald polynomials, both of which form a distinguished basis of
the polynomial representation of a maximal parabolic subalgebra of the Hecke
algebra. We give explicit integral formula for these polynomials, and
explicitly describe the transition matrices between classes of polynomials. We
further develop a combinatorial interpretation of homogeneous evaluations using
an expansion in terms of Schubert polynomials in the deformation parameters.
|
[{'version': 'v1', 'created': 'Tue, 6 Jul 2010 11:03:53 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Jun 2011 12:20:35 GMT'}]
|
2011-09-07
|
[array(['de Gier', 'Jan', ''], dtype=object)
array(['Lascoux', 'Alain', ''], dtype=object)
array(['Sorrell', 'Mark', ''], dtype=object)]
|
962 |
1202.4706
|
Jeongsu Lee
|
Guilhem Boeris, Jeongsu Lee, Karel Vyborny, and Igor Zutic
|
Tailoring Chirp in Spin-Lasers
|
4 pages, 3 figures
|
Appl. Phys. Lett. 100, 121111 (2012)
|
10.1063/1.3693168
| null |
cond-mat.mes-hall cond-mat.other
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The usefulness of semiconductor lasers is often limited by the undesired
frequency modulation, or chirp, a direct consequence of the intensity
modulation and carrier dependence of the refractive index in the gain medium.
In spin-lasers, realized by injecting, optically or electrically,
spin-polarized carriers, we elucidate paths to tailoring chirp. We provide a
generalized expression for chirp in spin-lasers and introduce modulation
schemes that could simultaneously eliminate chirp and enhance the bandwidth, as
compared to the conventional (spin-unpolarized) lasers.
|
[{'version': 'v1', 'created': 'Tue, 21 Feb 2012 17:25:19 GMT'}]
|
2012-03-22
|
[array(['Boeris', 'Guilhem', ''], dtype=object)
array(['Lee', 'Jeongsu', ''], dtype=object)
array(['Vyborny', 'Karel', ''], dtype=object)
array(['Zutic', 'Igor', ''], dtype=object)]
|
963 |
1502.05184
|
Manuel Reyes
|
Miodrag C. Iovanov, Zachary Mesyan, Manuel L. Reyes
|
Infinite-dimensional diagonalization and semisimplicity
|
39 pages
|
Israel Journal of Mathematics, Volume 215 (2016), 801-855
|
10.1007/s11856-016-1395-5
| null |
math.RA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We characterize the diagonalizable subalgebras of End(V), the full ring of
linear operators on a vector space V over a field, in a manner that directly
generalizes the classical theory of diagonalizable algebras of operators on a
finite-dimensional vector space. Our characterizations are formulated in terms
of a natural topology (the "finite topology") on End(V), which reduces to the
discrete topology in the case where V is finite-dimensional. We further
investigate when two subalgebras of operators can and cannot be simultaneously
diagonalized, as well as the closure of the set of diagonalizable operators
within End(V). Motivated by the classical link between diagonalizability and
semisimplicity, we also give an infinite-dimensional generalization of the
Wedderburn-Artin theorem, providing a number of equivalent characterizations of
left pseudocompact, Jacoboson semisimple rings that parallel various
characterizations of artinian semisimple rings. This theorem unifies a number
of related results in the literature, including the structure of linearly
compact, Jacobson semsimple rings and cosemisimple coalgebras over a field.
|
[{'version': 'v1', 'created': 'Wed, 18 Feb 2015 11:41:59 GMT'}
{'version': 'v2', 'created': 'Mon, 5 Oct 2015 20:57:37 GMT'}
{'version': 'v3', 'created': 'Fri, 21 Oct 2016 15:51:51 GMT'}]
|
2016-10-24
|
[array(['Iovanov', 'Miodrag C.', ''], dtype=object)
array(['Mesyan', 'Zachary', ''], dtype=object)
array(['Reyes', 'Manuel L.', ''], dtype=object)]
|
964 |
1912.09419
|
Jordi Mur-Petit
|
Michael Hughes, Matthew D. Frye, Rahul Sawant, Gaurav Bhole, Jonathan
A. Jones, Simon L. Cornish, M. R. Tarbutt, Jeremy M. Hutson, Dieter Jaksch,
Jordi Mur-Petit
|
A robust entangling gate for polar molecules using magnetic and
microwave fields
|
13 pages, 5 figures
|
Phys. Rev. A 101, 062308 (2020)
|
10.1103/PhysRevA.101.062308
| null |
quant-ph cond-mat.quant-gas physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Polar molecules are an emerging platform for quantum technologies based on
their long-range electric dipole-dipole interactions, which open new
possibilities for quantum information processing and the quantum simulation of
strongly correlated systems. Here, we use magnetic and microwave fields to
design a fast entangling gate with $>0.999$ fidelity and which is robust with
respect to fluctuations in the trapping and control fields and to small thermal
excitations. These results establish the feasibility to build a scalable
quantum processor with a broad range of molecular species in optical-lattice
and optical-tweezers setups.
|
[{'version': 'v1', 'created': 'Thu, 19 Dec 2019 17:43:19 GMT'}
{'version': 'v2', 'created': 'Fri, 5 Jun 2020 16:43:58 GMT'}]
|
2020-06-08
|
[array(['Hughes', 'Michael', ''], dtype=object)
array(['Frye', 'Matthew D.', ''], dtype=object)
array(['Sawant', 'Rahul', ''], dtype=object)
array(['Bhole', 'Gaurav', ''], dtype=object)
array(['Jones', 'Jonathan A.', ''], dtype=object)
array(['Cornish', 'Simon L.', ''], dtype=object)
array(['Tarbutt', 'M. R.', ''], dtype=object)
array(['Hutson', 'Jeremy M.', ''], dtype=object)
array(['Jaksch', 'Dieter', ''], dtype=object)
array(['Mur-Petit', 'Jordi', ''], dtype=object)]
|
965 |
2207.00903
|
Seyyed Mostafa Mousavi Janbeh Sarayi
|
Seyyed Mostafa Mousavi Janbeh Sarayi and Mansour Nikkhah Bahrami
|
A Structured Sparse Neural Network and Its Matrix Calculations Algorithm
|
24 pages, 3 figures
| null | null | null |
cs.LG cs.NE
|
http://creativecommons.org/licenses/by/4.0/
|
Gradient descent optimizations and backpropagation are the most common
methods for training neural networks, but they are computationally expensive
for real time applications, need high memory resources, and are difficult to
converge for many networks and large datasets. [Pseudo]inverse models for
training neural network have emerged as powerful tools to overcome these
issues. In order to effectively implement these methods, structured pruning
maybe be applied to produce sparse neural networks. Although sparse neural
networks are efficient in memory usage, most of their algorithms use the same
fully loaded matrix calculation methods which are not efficient for sparse
matrices. Tridiagonal matrices are one of the frequently used candidates for
structuring neural networks, but they are not flexible enough to handle
underfitting and overfitting problems as well as generalization properties. In
this paper, we introduce a nonsymmetric, tridiagonal matrix with offdiagonal
sparse entries and offset sub and super-diagonals as well algorithms for its
[pseudo]inverse and determinant calculations. Traditional algorithms for matrix
calculations, specifically inversion and determinant, of these forms are not
efficient specially for large matrices, e.g. larger datasets or deeper
networks. A decomposition for lower triangular matrices is developed and the
original matrix is factorized into a set of matrices where their inverse
matrices are calculated. For the cases where the matrix inverse does not exist,
a least square type pseudoinverse is provided. The present method is a direct
routine, i.e., executes in a predictable number of operations which is tested
for randomly generated matrices with varying size. The results show significant
improvement in computational costs specially when the size of matrix increases.
|
[{'version': 'v1', 'created': 'Sat, 2 Jul 2022 19:38:48 GMT'}]
|
2022-07-05
|
[array(['Sarayi', 'Seyyed Mostafa Mousavi Janbeh', ''], dtype=object)
array(['Bahrami', 'Mansour Nikkhah', ''], dtype=object)]
|
966 |
1910.12229
|
Jianquan Ge
|
Jianquan Ge
|
Problems related to isoparametric theory
|
Submitted to "Surveys in Geometric Analysis 2019"
| null | null | null |
math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this note we briefly survey and propose some open problems related to
isoparametric theory.
|
[{'version': 'v1', 'created': 'Sun, 27 Oct 2019 10:37:18 GMT'}]
|
2019-10-29
|
[array(['Ge', 'Jianquan', ''], dtype=object)]
|
967 |
1611.03988
|
Giacomo Albi
|
Giacomo Albi, Massimo Fornasier, Dante Kalise
|
A Boltzmann approach to mean-field sparse feedback control
| null | null | null | null |
math.OC math-ph math.DS math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the synthesis of optimal control policies for large-scale
multi-agent systems. The optimal control design induces a parsimonious control
intervention by means of l-1, sparsity-promoting control penalizations. We
study instantaneous and infinite horizon sparse optimal feedback controllers.
In order to circumvent the dimensionality issues associated to the control of
large-scale agent-based models, we follow a Boltzmann approach. We generate
(sub)optimal controls signals for the kinetic limit of the multi-agent
dynamics, by sampling of the optimal solution of the associated two-agent
dynamics. Numerical experiments assess the performance of the proposed sparse
design.
|
[{'version': 'v1', 'created': 'Sat, 12 Nov 2016 11:18:57 GMT'}]
|
2016-11-15
|
[array(['Albi', 'Giacomo', ''], dtype=object)
array(['Fornasier', 'Massimo', ''], dtype=object)
array(['Kalise', 'Dante', ''], dtype=object)]
|
968 |
2103.01362
|
Wayne Isaac Uy
|
Wayne Isaac Tan Uy, Benjamin Peherstorfer
|
Operator inference of non-Markovian terms for learning reduced models
from partially observed state trajectories
| null | null | null | null |
cs.LG cs.NA math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This work introduces a non-intrusive model reduction approach for learning
reduced models from partially observed state trajectories of high-dimensional
dynamical systems. The proposed approach compensates for the loss of
information due to the partially observed states by constructing non-Markovian
reduced models that make future-state predictions based on a history of reduced
states, in contrast to traditional Markovian reduced models that rely on the
current reduced state alone to predict the next state. The core contributions
of this work are a data sampling scheme to sample partially observed states
from high-dimensional dynamical systems and a formulation of a regression
problem to fit the non-Markovian reduced terms to the sampled states. Under
certain conditions, the proposed approach recovers from data the very same
non-Markovian terms that one obtains with intrusive methods that require the
governing equations and discrete operators of the high-dimensional dynamical
system. Numerical results demonstrate that the proposed approach leads to
non-Markovian reduced models that are predictive far beyond the training
regime. Additionally, in the numerical experiments, the proposed approach
learns non-Markovian reduced models from trajectories with only 20% observed
state components that are about as accurate as traditional Markovian reduced
models fitted to trajectories with 99% observed components.
|
[{'version': 'v1', 'created': 'Mon, 1 Mar 2021 23:55:52 GMT'}
{'version': 'v2', 'created': 'Fri, 26 Mar 2021 12:52:59 GMT'}]
|
2021-03-29
|
[array(['Uy', 'Wayne Isaac Tan', ''], dtype=object)
array(['Peherstorfer', 'Benjamin', ''], dtype=object)]
|
969 |
1404.3172
|
P. A. Gonzalez
|
Marcela Catalan, Eduardo Cisternas, P. A. Gonzalez and Yerko Vasquez
|
Quasinormal modes and greybody factors of a four-dimensional Lifshitz
black hole with z=0
|
Improved version. arXiv admin note: text overlap with arXiv:1312.6451
| null | null | null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study scalar perturbations for a four-dimensional asymptotically Lifshitz
black hole in conformal gravity with dynamical exponent z=0, and spherical
topology for the transverse section, and we find analytically and numerically
the quasinormal modes for scalar fields for some special cases. Then, we study
the stability of these black holes under scalar field perturbations and the
greybody factors.
|
[{'version': 'v1', 'created': 'Fri, 11 Apr 2014 18:00:21 GMT'}
{'version': 'v2', 'created': 'Wed, 23 Apr 2014 12:27:42 GMT'}
{'version': 'v3', 'created': 'Mon, 12 Oct 2015 23:02:05 GMT'}]
|
2015-10-14
|
[array(['Catalan', 'Marcela', ''], dtype=object)
array(['Cisternas', 'Eduardo', ''], dtype=object)
array(['Gonzalez', 'P. A.', ''], dtype=object)
array(['Vasquez', 'Yerko', ''], dtype=object)]
|
970 |
1912.01269
|
Mahmoud Abu-Samha
|
Mahmoud Abu-samha and Lars B Madsen
|
Effect of multielectron polarization in strong-field ionization of the
oriented CO molecule
|
6 figures
|
Phys. Rev. A 101, 013433 (2020)
|
10.1103/PhysRevA.101.013433
| null |
physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We discuss the mechanism by which the inclusion of multielectron polarization
improves the solution of the time-dependent Schr\"{o}dinger equation (TDSE) for
the oriented CO molecule in a strong external laser pulse within the
single-active-electron (SAE) approximation. A challenging problem of using the
SAE approximation is that the active electron, instead of undergoing
ionization, may be driven by the external field to lower-lying orbitals. For
the oriented CO molecule, dipole coupling to the lower-lying bound states of
the potential depends on the orientation angle, thereby affecting the
orientation-dependent ionization dynamics. By including multielectron
polarization, the external field is turned off within the molecular radius,
thereby minimizing dipole coupling of the highest occupied molecular orbital to
the lower-lying states of the potential. We discuss how turning off the
external field within an appropriate molecular radius without accounting for
the induced dipole term in the effective potential beyond this radial cut-off
distance, constitutes an effective and accurate approach to describe
strong-field ionization of CO and to minimize dipole coupling to lower-lying
bound states.
|
[{'version': 'v1', 'created': 'Tue, 3 Dec 2019 09:55:55 GMT'}]
|
2020-02-05
|
[array(['Abu-samha', 'Mahmoud', ''], dtype=object)
array(['Madsen', 'Lars B', ''], dtype=object)]
|
971 |
2301.08448
|
Pilhyeon Lee
|
Pilhyeon Lee, Seogkyu Jeon, Sunhee Hwang, Minjung Shin, Hyeran Byun
|
Source-free Subject Adaptation for EEG-based Visual Recognition
|
Accepted by the 11th IEEE International Winter Conference on
Brain-Computer Interface (BCI 2023). Code is available at
https://github.com/DeepBCI/Deep-BCI
| null | null | null |
eess.SP cs.AI cs.CV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper focuses on subject adaptation for EEG-based visual recognition. It
aims at building a visual stimuli recognition system customized for the target
subject whose EEG samples are limited, by transferring knowledge from abundant
data of source subjects. Existing approaches consider the scenario that samples
of source subjects are accessible during training. However, it is often
infeasible and problematic to access personal biological data like EEG signals
due to privacy issues. In this paper, we introduce a novel and practical
problem setup, namely source-free subject adaptation, where the source subject
data are unavailable and only the pre-trained model parameters are provided for
subject adaptation. To tackle this challenging problem, we propose
classifier-based data generation to simulate EEG samples from source subjects
using classifier responses. Using the generated samples and target subject
data, we perform subject-independent feature learning to exploit the common
knowledge shared across different subjects. Notably, our framework is
generalizable and can adopt any subject-independent learning method. In the
experiments on the EEG-ImageNet40 benchmark, our model brings consistent
improvements regardless of the choice of subject-independent learning. Also,
our method shows promising performance, recording top-1 test accuracy of 74.6%
under the 5-shot setting even without relying on source data. Our code can be
found at
https://github.com/DeepBCI/Deep-BCI/tree/master/1_Intelligent_BCI/Source_Free_Subject_Adaptation_for_EEG.
|
[{'version': 'v1', 'created': 'Fri, 20 Jan 2023 07:01:01 GMT'}]
|
2023-01-23
|
[array(['Lee', 'Pilhyeon', ''], dtype=object)
array(['Jeon', 'Seogkyu', ''], dtype=object)
array(['Hwang', 'Sunhee', ''], dtype=object)
array(['Shin', 'Minjung', ''], dtype=object)
array(['Byun', 'Hyeran', ''], dtype=object)]
|
972 |
2210.02829
|
Chih-Pin Tan
|
Chih-Pin Tan, Alvin W.Y. Su and Yi-Hsuan Yang
|
Melody Infilling with User-Provided Structural Context
| null | null | null | null |
cs.SD cs.LG eess.AS
|
http://creativecommons.org/licenses/by/4.0/
|
This paper proposes a novel Transformer-based model for music score
infilling, to generate a music passage that fills in the gap between given past
and future contexts. While existing infilling approaches can generate a passage
that connects smoothly locally with the given contexts, they do not take into
account the musical form or structure of the music and may therefore generate
overly smooth results. To address this issue, we propose a structure-aware
conditioning approach that employs a novel attention-selecting module to supply
user-provided structure-related information to the Transformer for infilling.
With both objective and subjective evaluations, we show that the proposed model
can harness the structural information effectively and generate melodies in the
style of pop of higher quality than the two existing structure-agnostic
infilling models.
|
[{'version': 'v1', 'created': 'Thu, 6 Oct 2022 11:37:04 GMT'}]
|
2022-10-07
|
[array(['Tan', 'Chih-Pin', ''], dtype=object)
array(['Su', 'Alvin W. Y.', ''], dtype=object)
array(['Yang', 'Yi-Hsuan', ''], dtype=object)]
|
973 |
0910.5825
|
Christian Weiss
|
C. Weiss, C. Wagner, C. Kleimann, F.S. Tautz, R. Temirov
|
Resolving chemical structures in scanning tunnelling microscopy
|
Main text: 14 pages including references and captions, 4 figures.
Supplementary information: 1 pages including 2 figures
| null |
10.1016/j.progsurf.2012.05.002
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
With the invention of scanning probe techniques, direct imaging of single
atoms and molecules became possible. Today, scanning tunnelling microscopy
(STM) routinely provides angstrom-scale image resolution. At the same time,
however, STM images suffer from a serious drawback - the absence of chemical
information. Here we demonstrate a modification of STM that resolves the
chemical structure of molecular adsorbates. The key to the new STM mode is a
combined force sensor and signal transducer that is formed within the
tunnelling junction when a suitable gas condenses there. The method probes the
repulsive branch of the surface adsorption potential and transforms the force
signal into a current. Obtained images achieve the same resolution as
state-of-the-art atomic force microscopy (AFM). In contrast to AFM, however,
our (uncalibrated) force sensor is of nanoscale dimensions and therefore
intrinsically insensitive to those long-range interactions that make
atomic-resolution AFM so demanding.
|
[{'version': 'v1', 'created': 'Fri, 30 Oct 2009 09:43:49 GMT'}]
|
2012-06-13
|
[array(['Weiss', 'C.', ''], dtype=object)
array(['Wagner', 'C.', ''], dtype=object)
array(['Kleimann', 'C.', ''], dtype=object)
array(['Tautz', 'F. S.', ''], dtype=object)
array(['Temirov', 'R.', ''], dtype=object)]
|
974 |
1607.08113
|
Mohsen Fathi
|
Mohsen Fathi, Morteza Mohseni
|
Evolving Horava Cosmological Horizons
|
13 pages, 14 figures
|
Chin. Phys. C 40, 9, 095101 (2016)
|
10.1088/1674-1137/40/9/095101
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Several sets of radially propagating null congruence generators are exploited
in order to form 3-dimensional marginally trapped surfaces, referred to as
black hole and cosmological apparent horizons in a Horava universe. Based on
this method, we deal with the characteristics of the 2-dimensional space-like
spheres of symmetry and the peculiarities of having trapping horizons.
Moreover, we apply this method in standard expanding and contracting FLRW
cosmological models of a Horava universe to investigate the conditions under
which the extra parameters of the theory may lead to trapped/anti-trapped
surfaces both in the future and in the past. We also include the cases of
negative time, referred to as the finite past, and discuss the formation of
anti-trapped surfaces inside the cosmological apparent horizons.
|
[{'version': 'v1', 'created': 'Fri, 22 Jul 2016 13:20:39 GMT'}
{'version': 'v2', 'created': 'Tue, 16 Aug 2016 03:22:54 GMT'}]
|
2016-08-17
|
[array(['Fathi', 'Mohsen', ''], dtype=object)
array(['Mohseni', 'Morteza', ''], dtype=object)]
|
975 |
1105.4837
|
Francesca Valsecchi Miss
|
Francesca Valsecchi, Will M. Farr, Bart Willems, Christopher .J.
Deloye, and Vassiliki Kalogera
|
Tidally-Induced Apsidal Precession in Double White Dwarfs: a new mass
measurement tool with LISA
|
23 pages, 7 figures, revised to match accepted ApJ version
| null |
10.1088/0004-637X/745/2/137
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Galactic interacting double white dwarfs (DWD) are guaranteed gravitational
wave (GW) sources for the GW detector LISA, with more than 10^4 binaries
expected to be detected over the mission's lifetime. Part of this population is
expected to be eccentric, and here we investigate the potential for
constraining the white dwarf (WD) properties through apsidal precession in
these binaries. We analyze the tidal, rotational, and general relativistic
contributions to apsidal precession by using detailed He WD models, where the
evolution of the star's interior is followed throughout the cooling phase. In
agreement with previous studies of zero-temperature WDs, we find that apsidal
precession in eccentric DWDs can lead to a detectable shift in the emitted GW
signal when binaries with cool (old) components are considered. This shift
increases significantly for hot (young) WDs. We find that apsidal motion in hot
(cool) DWDs is dominated by tides at orbital frequencies above ~10^{-4}Hz
(10^{- 3}$Hz). The analysis of apsidal precession in these sources while
ignoring the tidal component would lead to an extreme bias in the mass
determination, and could lead us to misidentify WDs as neutron stars or black
holes. We use the detailed WD models to show that for older, cold WDs, there is
a unique relationship that ties the radius and apsidal precession constant to
the WD masses, therefore allowing tides to be used as a tool to constrain the
source masses.
|
[{'version': 'v1', 'created': 'Tue, 24 May 2011 17:26:28 GMT'}
{'version': 'v2', 'created': 'Fri, 21 Oct 2011 20:23:13 GMT'}]
|
2015-05-28
|
[array(['Valsecchi', 'Francesca', ''], dtype=object)
array(['Farr', 'Will M.', ''], dtype=object)
array(['Willems', 'Bart', ''], dtype=object)
array(['Deloye', 'Christopher . J.', ''], dtype=object)
array(['Kalogera', 'Vassiliki', ''], dtype=object)]
|
976 |
2203.11518
|
Apriel K Hodari
|
Apriel K Hodari, Shayna B Krammes, Chanda Prescod-Weinstein, Brian D
Nord, Jessica N Esquivel, K\'et\'evi A Assamagan
|
Informal Socialization in Physics Training
|
Submitted to the Proceedings of the US Community Study on the Future
of Particle Physics (Snowmass 2021); 26 pages Added references
| null | null | null |
physics.ed-ph physics.soc-ph
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
This paper addresses issues related to the process of informal socialization
into physics, particularly for senior graduate students and postdoctoral
scholars. Many physicists' careers are built on the relationships they have and
develop during these critical years.
|
[{'version': 'v1', 'created': 'Tue, 22 Mar 2022 07:48:15 GMT'}
{'version': 'v2', 'created': 'Wed, 23 Mar 2022 23:31:27 GMT'}]
|
2022-03-28
|
[array(['Hodari', 'Apriel K', ''], dtype=object)
array(['Krammes', 'Shayna B', ''], dtype=object)
array(['Prescod-Weinstein', 'Chanda', ''], dtype=object)
array(['Nord', 'Brian D', ''], dtype=object)
array(['Esquivel', 'Jessica N', ''], dtype=object)
array(['Assamagan', 'Kétévi A', ''], dtype=object)]
|
977 |
1805.06093
|
Yitong Li
|
Yitong Li, Timothy Baldwin, and Trevor Cohn
|
Towards Robust and Privacy-preserving Text Representations
|
Accepted to ACL 2018
| null | null | null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Written text often provides sufficient clues to identify the author, their
gender, age, and other important attributes. Consequently, the authorship of
training and evaluation corpora can have unforeseen impacts, including
differing model performance for different user groups, as well as privacy
implications. In this paper, we propose an approach to explicitly obscure
important author characteristics at training time, such that representations
learned are invariant to these attributes. Evaluating on two tasks, we show
that this leads to increased privacy in the learned representations, as well as
more robust models to varying evaluation conditions, including out-of-domain
corpora.
|
[{'version': 'v1', 'created': 'Wed, 16 May 2018 01:57:47 GMT'}]
|
2018-05-17
|
[array(['Li', 'Yitong', ''], dtype=object)
array(['Baldwin', 'Timothy', ''], dtype=object)
array(['Cohn', 'Trevor', ''], dtype=object)]
|
978 |
1902.05160
|
Adam Stokes
|
Adam Stokes and Ahsan Nazir
|
Ultrastrong time-dependent light-matter interactions are gauge-relative
|
10 pages, 22 pages including references and appendix. 9 figures
|
Phys. Rev. Research 3, 013116 (2021)
|
10.1103/PhysRevResearch.3.013116
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Time-dependent light-matter interactions are a widespread means by which to
describe controllable experimental operations. They can be viewed as an
approximation in which a third system - the control system - is treated as
external within the Hamiltonian. We demonstrate that this results in
non-equivalence between gauges. We provide a physical example in which each
different non-equivalent model coincides with a gauge-invariant description
applied in a different experimental situation. The qualitative final-time
predictions obtained from these models, including entanglement and photon
number, depend on the gauge within which the time-dependent coupling assumption
is made. This occurs whenever the interaction switching is sufficiently strong
and non-adiabatic even if the coupling vanishes at the preparation and
measurement stages of the protocol, at which times the subsystems are unique
and experimentally addressable.
|
[{'version': 'v1', 'created': 'Wed, 13 Feb 2019 23:19:14 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Dec 2019 10:39:29 GMT'}
{'version': 'v3', 'created': 'Tue, 9 Feb 2021 20:02:54 GMT'}]
|
2021-02-11
|
[array(['Stokes', 'Adam', ''], dtype=object)
array(['Nazir', 'Ahsan', ''], dtype=object)]
|
979 |
2011.12676
|
Mohammadreza Edalati
|
Mohammadreza Edalati, Mahdi Mahmoudzadeh, Javad Safaie, Fabrice
Wallois, Sahar Moghimi
|
Great expectations in music: violation of rhythmic expectancies elicits
late frontal gamma activity nested in theta oscillations
| null | null |
10.1111/psyp.13909
| null |
q-bio.NC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Rhythm processing involves building expectations according to the
hierarchical temporal structure of auditory events. Although rhythm processing
has been addressed in the context of predictive coding, the properties of the
oscillatory response in different cortical areas is still not clear. We
explored the oscillatory properties of the neural response to rhythmic
incongruence and explored the cross-frequency coupling between multiple
frequencies to provide links between the concepts of predictive coding and
rhythm perception. We designed an experiment to investigate the neural response
to rhythmic deviations in which the tone either arrived earlier than expected
or the tone in the same metrical position was omitted. These two manipulations
modulate the rhythmic structure differently, with the former creating a larger
violation of the general structure of the musical stimulus than the latter.
Both deviations resulted in an MMN response, whereas only the rhythmic deviant
resulted in a subsequent P3a. Rhythmic deviants due to the early occurrence of
a tone, but not omission deviants, elicited a late high gamma response (60-80
Hz) at the end of the P3a over the left frontal region, which, interestingly,
correlated with the P3a amplitude over the same region and was also nested in
theta oscillations. The timing of the elicited high-frequency gamma
oscillations related to rhythmic deviation suggests that it might be related to
the update of the predictive neural model, corresponding to the temporal
structure of the events in higher-level cortical areas.
|
[{'version': 'v1', 'created': 'Wed, 25 Nov 2020 12:11:40 GMT'}]
|
2021-10-19
|
[array(['Edalati', 'Mohammadreza', ''], dtype=object)
array(['Mahmoudzadeh', 'Mahdi', ''], dtype=object)
array(['Safaie', 'Javad', ''], dtype=object)
array(['Wallois', 'Fabrice', ''], dtype=object)
array(['Moghimi', 'Sahar', ''], dtype=object)]
|
980 |
2001.03365
|
Junhui Kim
|
Junhui Kim and Joongheon Kim
|
Demo: Light-Weight Programming Language for Blockchain
| null | null | null | null |
cs.DC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This demo abstract introduces a new light-weight programming language koa
which is suitable for blockchain system design and implementation. In this
abstract, the basic features of koa are introduced including working system
(with playground), architecture, and virtual machine operations. Rum-time
execution of software implemented by koa will be presented during the session.
|
[{'version': 'v1', 'created': 'Fri, 10 Jan 2020 09:39:21 GMT'}]
|
2020-01-13
|
[array(['Kim', 'Junhui', ''], dtype=object)
array(['Kim', 'Joongheon', ''], dtype=object)]
|
981 |
2209.14020
|
Alvaro Lopez Cazalilla
|
A. Lopez-Cazalilla and F. Djurabekova and K. Nordlund
|
Observation of ripples under different angles
| null | null | null | null |
cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
The off-normal ion irradiation of semiconductor materials is seen to induce
nanopatterning effects. Different theories are proposed to explain the
mechanisms that drive self-reorganization of amorphisable surfaces. One of the
prominent hypothesis associates formation of nanopatterning with the changes of
sputtering characteristics caused by changes in surface morphology. At
ultra-low energy, when sputtering is negligible, the Si surface has still been
seen to re-organize forming surface ripples with the wave vector either aligned
with the ion beam direction or perpendicular to it.In this work, we investigate
the formation of ripples using molecular dynamics in all the three regimes of
ripple formation: low angles where no ripples form, intermediate regime where
the ripple wave vectors are parallel to the beam, and high angles where they
are perpendicular to it. We obtain atom-level insight on how the ion-beam
driven atomic dynamics at the surface contributes to organization, or lack of
it, in all the different regimes. Results of our simulations agree well with
experimental observations in the same range of ultra-low energy of ion
irradiation.
|
[{'version': 'v1', 'created': 'Wed, 28 Sep 2022 11:57:30 GMT'}
{'version': 'v2', 'created': 'Wed, 23 Nov 2022 13:28:30 GMT'}]
|
2022-11-24
|
[array(['Lopez-Cazalilla', 'A.', ''], dtype=object)
array(['Djurabekova', 'F.', ''], dtype=object)
array(['Nordlund', 'K.', ''], dtype=object)]
|
982 |
quant-ph/9903088
|
Diosi Lajos
|
Lajos Diosi
|
On hybrid dynamics of the Copenhagen dichotomic world
|
8pp LateX (ws-p8-50x6-00.cls macro), to appear in New Insights in
Quantum Mechanics (World Scientific)
| null | null | null |
quant-ph
| null |
In the Copenhagen viewpoint, part of the world is quantized and the
complementary part remains classical. From a formal dynamic aspect, standard
theory is incomplete since it does never account for the so-called
'back-reaction' of quantized systems on classical systems except for the highly
idealized system-detector interaction. To resolve this formal issue, a certain
'hybrid dynamics' can be constructed to account for the generic interaction
between classical and quantized parts. Hybrid dynamics incorporates standard
quantum theory, including collapse of the wave function during system-detector
interaction. Measurable predictions are robust against shifting the
classical-quantum boundary (von Neumann-cut).
|
[{'version': 'v1', 'created': 'Sun, 28 Mar 1999 15:30:40 GMT'}]
|
2007-05-23
|
[array(['Diosi', 'Lajos', ''], dtype=object)]
|
983 |
1506.05020
|
Cagatay Kutluhan
|
Jonathan Hanselman, Cagatay Kutluhan, Tye Lidman
|
A remark on the geography problem in Heegaard Floer homology
|
10 pages, 3 figures. v2: new corollary added (Corollary 3)
| null | null | null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give new obstructions to the module structures arising in Heegaard Floer
homology. As a corollary, we characterize the possible modules arising as the
Heegaard Floer homology of an integer homology sphere with one-dimensional
reduced Floer homology. Up to absolute grading shifts, there are only two. We
use this corollary to show that the chain complex depicted by Ozsv\'ath,
Stipsicz, and Szab\'o to argue that there is no algebraic obstruction to the
existence of knots with trivial $\epsilon$ invariant and non-trivial $\Upsilon$
invariant cannot be realized as the knot Floer complex of a knot.
|
[{'version': 'v1', 'created': 'Tue, 16 Jun 2015 16:15:19 GMT'}
{'version': 'v2', 'created': 'Mon, 31 Jul 2017 00:45:08 GMT'}]
|
2017-08-01
|
[array(['Hanselman', 'Jonathan', ''], dtype=object)
array(['Kutluhan', 'Cagatay', ''], dtype=object)
array(['Lidman', 'Tye', ''], dtype=object)]
|
984 |
1212.4462
|
Igor G. Korepanov
|
Igor G. Korepanov and Nurlan M. Sadykov
|
Pentagon Relations in Direct Sums and Grassmann Algebras
| null |
SIGMA 9 (2013), 030, 16 pages
|
10.3842/SIGMA.2013.030
| null |
math-ph math.AT math.MP math.QA
|
http://creativecommons.org/licenses/by-nc-sa/3.0/
|
We construct vast families of orthogonal operators obeying pentagon relation
in a direct sum of three n-dimensional vector spaces. As a consequence, we
obtain pentagon relations in Grassmann algebras, making a far reaching
generalization of exotic Reidemeister torsions.
|
[{'version': 'v1', 'created': 'Sat, 15 Dec 2012 10:55:40 GMT'}
{'version': 'v2', 'created': 'Wed, 3 Apr 2013 16:12:51 GMT'}
{'version': 'v3', 'created': 'Wed, 10 Apr 2013 05:33:35 GMT'}]
|
2013-04-11
|
[array(['Korepanov', 'Igor G.', ''], dtype=object)
array(['Sadykov', 'Nurlan M.', ''], dtype=object)]
|
985 |
2306.07899
|
Veniamin Veselovsky
|
Veniamin Veselovsky, Manoel Horta Ribeiro, Robert West
|
Artificial Artificial Artificial Intelligence: Crowd Workers Widely Use
Large Language Models for Text Production Tasks
|
9 pages, 4 figures
| null | null | null |
cs.CL cs.CY
|
http://creativecommons.org/licenses/by/4.0/
|
Large language models (LLMs) are remarkable data annotators. They can be used
to generate high-fidelity supervised training data, as well as survey and
experimental data. With the widespread adoption of LLMs, human gold--standard
annotations are key to understanding the capabilities of LLMs and the validity
of their results. However, crowdsourcing, an important, inexpensive way to
obtain human annotations, may itself be impacted by LLMs, as crowd workers have
financial incentives to use LLMs to increase their productivity and income. To
investigate this concern, we conducted a case study on the prevalence of LLM
usage by crowd workers. We reran an abstract summarization task from the
literature on Amazon Mechanical Turk and, through a combination of keystroke
detection and synthetic text classification, estimate that 33-46% of crowd
workers used LLMs when completing the task. Although generalization to other,
less LLM-friendly tasks is unclear, our results call for platforms,
researchers, and crowd workers to find new ways to ensure that human data
remain human, perhaps using the methodology proposed here as a stepping stone.
Code/data: https://github.com/epfl-dlab/GPTurk
|
[{'version': 'v1', 'created': 'Tue, 13 Jun 2023 16:46:24 GMT'}]
|
2023-06-14
|
[array(['Veselovsky', 'Veniamin', ''], dtype=object)
array(['Ribeiro', 'Manoel Horta', ''], dtype=object)
array(['West', 'Robert', ''], dtype=object)]
|
986 |
1509.00927
|
Hai Le
|
H. P. Le, J.-L. Cambier
|
Modeling of Inelastic Collisions in a Multifluid Plasma: Excitation and
Deexcitation
|
11 figures, submitted for publication
| null |
10.1063/1.4931170
| null |
physics.plasm-ph physics.comp-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We describe here a model for inelastic collisions for electronic excitation
and deexcitation processes in a general, multifluid plasma. The model is
derived from kinetic theory, and applicable to any mixture and mass ratio. The
principle of detailed balance is strictly enforced, and the model is consistent
with all asymptotic limits. The results are verified with direct Monte Carlo
calculations, and various numerical tests are conducted for the case of an
electron-hydrogen two-fluid system, using a generic, semi-classical model of
collision cross sections. We find that in some cases, the contribution of
inelastic collisions to the momentum and thermal resistance coefficients is not
negligible, in contrast to the assumptions of current multifluid models. This
fundamental model is also applied to ionization and recombination processes,
the studies on which are currently underway.
|
[{'version': 'v1', 'created': 'Thu, 3 Sep 2015 03:18:23 GMT'}]
|
2015-10-08
|
[array(['Le', 'H. P.', ''], dtype=object)
array(['Cambier', 'J. -L.', ''], dtype=object)]
|
987 |
1502.01093
|
Paul Zinn-Justin
|
P. Zinn-Justin
|
Quiver varieties and quantum Knizhnik--Zamolodchikov equation
| null | null |
10.1007/s11232-015-0376-x
| null |
math.RT math-ph math.AG math.MP math.QA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show how equivariant volumes of tensor product quiver varieties of type A
are given by matrix elements of vertex operators of centrally extended doubles
of Yangians, and how they satisfy in some cases the rational, level 1, quantum
Knizhnik--Zamolodchikov equation.
|
[{'version': 'v1', 'created': 'Wed, 4 Feb 2015 05:06:06 GMT'}]
|
2016-02-17
|
[array(['Zinn-Justin', 'P.', ''], dtype=object)]
|
988 |
2108.00273
|
Muhammad Monjurul Karim
|
Muhammad Monjurul Karim, Yu Li, Ruwen Qin
|
Towards explainable artificial intelligence (XAI) for early anticipation
of traffic accidents
|
Accepted in TRR
| null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
Traffic accident anticipation is a vital function of Automated Driving
Systems (ADSs) for providing a safety-guaranteed driving experience. An
accident anticipation model aims to predict accidents promptly and accurately
before they occur. Existing Artificial Intelligence (AI) models of accident
anticipation lack a human-interpretable explanation of their decision-making.
Although these models perform well, they remain a black-box to the ADS users,
thus difficult to get their trust. To this end, this paper presents a Gated
Recurrent Unit (GRU) network that learns spatio-temporal relational features
for the early anticipation of traffic accidents from dashcam video data. A
post-hoc attention mechanism named Grad-CAM is integrated into the network to
generate saliency maps as the visual explanation of the accident anticipation
decision. An eye tracker captures human eye fixation points for generating
human attention maps. The explainability of network-generated saliency maps is
evaluated in comparison to human attention maps. Qualitative and quantitative
results on a public crash dataset confirm that the proposed explainable network
can anticipate an accident on average 4.57 seconds before it occurs, with
94.02% average precision. In further, various post-hoc attention-based XAI
methods are evaluated and compared. It confirms that the Grad-CAM chosen by
this study can generate high-quality, human-interpretable saliency maps (with
1.23 Normalized Scanpath Saliency) for explaining the crash anticipation
decision. Importantly, results confirm that the proposed AI model, with a
human-inspired design, can outperform humans in the accident anticipation.
|
[{'version': 'v1', 'created': 'Sat, 31 Jul 2021 15:53:32 GMT'}
{'version': 'v2', 'created': 'Fri, 7 Jan 2022 22:07:19 GMT'}]
|
2022-01-11
|
[array(['Karim', 'Muhammad Monjurul', ''], dtype=object)
array(['Li', 'Yu', ''], dtype=object)
array(['Qin', 'Ruwen', ''], dtype=object)]
|
989 |
hep-ph/9605282
|
Tom Browder
|
T.E. Browder (University of Hawaii)
|
Two Topics in Particle-Antiparticle Mixing
|
2 pages, LATEX format. To appear in the Proceedings of the 1995
Brussels Europhysics Conference
| null | null | null |
hep-ph
| null |
This paper summarizes two experimental issues in the study of particle
antiparticle mixing. We propose a new method to extract the ratio
$|V_{ts}/V_{td}|^2$ from a measurement of $\Delta \Gamma/\Gamma$ for the $B_s$
meson. This method is experimentally more sensitive than the conventional
method for large values of $|V_{ts}|$ but depends on the accuracy of parton
level calculations. We then briefly discuss the implications of large CP
violation and final state interactions (FSI) in the experimental search for
$D^0-\bar{D}^0$ mixing. The work described here was carried out in
collaboration with S. Pakvasa.
|
[{'version': 'v1', 'created': 'Sat, 11 May 1996 22:00:59 GMT'}]
|
2007-05-23
|
[array(['Browder', 'T. E.', '', 'University of Hawaii'], dtype=object)]
|
990 |
1503.02939
|
Michael Kiermaier
|
Michael Kiermaier and Alfred Wassermann
|
Double and bordered \$\alpha\$-circulant self-dual codes over finite
commutative chain rings
| null |
In Proceedings of the Eleventh International Workshop on Algebraic
and Combinatorial Coding Theory 2008, pages 144-150, 2008
| null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we investigate codes over finite commutative rings R, whose
generator matrices are built from \$\alpha\$-circulant matrices. For a
non-trivial ideal I<R we give a method to lift such codes over R/I to codes
over R, such that some isomorphic copies are avoided.
For the case where I is the minimal ideal of a finite chain ring we refine
this lifting method: We impose the additional restriction that lifting
preserves self-duality. It will be shown that this can be achieved by solving a
linear system of equations over a finite field.
Finally we apply this technique to Z_4-linear double nega-circulant and
bordered circulant self-dual codes. We determine the best minimum Lee distance
of these codes up to length 64.
|
[{'version': 'v1', 'created': 'Tue, 10 Mar 2015 14:54:21 GMT'}]
|
2015-03-11
|
[array(['Kiermaier', 'Michael', ''], dtype=object)
array(['Wassermann', 'Alfred', ''], dtype=object)]
|
991 |
hep-th/0701239
|
Leonardo Modesto
|
Leonardo Modesto
|
Loop quantum gravity and black hole singularity
|
17 pages, 7 figures, LaTex. Proceedings of the XVII SIGRAV
Conference, Turin, September 4-7, 2006
| null | null | null |
hep-th gr-qc
| null |
In this paper we summarize "loop quantum gravity" (LQG) and we show how ideas
developed in LQG can solve the black hole singularity problem when applied to a
minisuperspace model.
|
[{'version': 'v1', 'created': 'Thu, 25 Jan 2007 15:25:26 GMT'}]
|
2007-05-23
|
[array(['Modesto', 'Leonardo', ''], dtype=object)]
|
992 |
hep-ph/9503350
|
Juergen Baacke
|
J. Baacke
|
Fluctuation corrections to bubble nucleation
|
19 pages, LaTeX, no macros, no figures
|
Phys.Rev. D52 (1995) 6760-6769
|
10.1103/PhysRevD.52.6760
|
DO-TH-95/04
|
hep-ph hep-th
| null |
The fluctuation determinant which determines the preexponential factor of the
transition rate for minimal bubbles is computed for the electroweak theory with
$\sin \Theta_W = 0$. As the basic action we use the three-dimensional
high-temperature action including, besides temperature dependent masses, the $T
\Phi^3$ one-loop contribution which makes the phase transition first order. The
results show that this contribution (which has then to be subtracted from the
exact result) gives the dominant contribution to the one-loop effective action.
The remaining correction is of the order of, but in general larger than the
critical bubble action and suppresses the transition rate. The results for the
Higgs field fluctuations are compared with those of an approximate heat kernel
computation of Kripfganz et al., good agreement is found for small bubbles,
strong deviations for large thin-wall bubbles.
|
[{'version': 'v1', 'created': 'Thu, 16 Mar 1995 15:03:48 GMT'}]
|
2016-09-01
|
[array(['Baacke', 'J.', ''], dtype=object)]
|
993 |
1208.4523
|
Konstantin Bliokh
|
Konstantin Y. Bliokh, Aleksandr Y. Bekshaev, and Franco Nori
|
Dual electromagnetism: Helicity, spin, momentum, and angular momentum
|
25 pages, 1 figure
|
New J. Phys. 15, 033026 (2013); New J. Phys. 18, 089503 (2016)
|
10.1088/1367-2630/15/3/033026
| null |
physics.optics hep-th quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The dual symmetry between electric and magnetic fields is an important
intrinsic property of Maxwell equations in free space. This symmetry underlies
the conservation of optical helicity, and, as we show here, is closely related
to the separation of spin and orbital degrees of freedom of light (the helicity
flux coincides with the spin angular momentum). However, in the standard
field-theory formulation of electromagnetism, the field Lagrangian is not dual
symmetric. This leads to problematic dual-asymmetric forms of the canonical
energy-momentum, spin, and orbital angular momentum tensors. Moreover, we show
that the components of these tensors conflict with the helicity and energy
conservation laws. To resolve this discrepancy between the symmetries of the
Lagrangian and Maxwell equations, we put forward a dual-symmetric Lagrangian
formulation of classical electromagnetism. This dual electromagnetism preserves
the form of Maxwell equations, yields meaningful canonical energy-momentum and
angular momentum tensors, and ensures a self-consistent separation of the spin
and orbital degrees of freedom. This provides rigorous derivation of results
suggested in other recent approaches. We make the Noether analysis of the dual
symmetry and all the Poincar\'e symmetries, examine both local and integral
conserved quantities, and show that only the dual electromagnetism naturally
produces a complete self-consistent set of conservation laws. We also discuss
the observability of physical quantities distinguishing the standard and dual
theories, as well as relations to quantum weak measurements and various optical
experiments.
|
[{'version': 'v1', 'created': 'Wed, 22 Aug 2012 15:11:46 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Oct 2012 11:40:45 GMT'}
{'version': 'v3', 'created': 'Tue, 5 Feb 2013 12:28:44 GMT'}
{'version': 'v4', 'created': 'Wed, 20 Mar 2013 17:30:49 GMT'}]
|
2016-08-16
|
[array(['Bliokh', 'Konstantin Y.', ''], dtype=object)
array(['Bekshaev', 'Aleksandr Y.', ''], dtype=object)
array(['Nori', 'Franco', ''], dtype=object)]
|
994 |
2202.07377
|
Benjamin Hellouin de Menibus
|
Antonin Callard and Benjamin Hellouin de Menibus
|
The aperiodic Domino problem in higher dimension
|
15 pages, accepted to STACS 2022
| null |
10.4230/LIPIcs.STACS.2022.18
| null |
cs.DM cs.CC math.DS
|
http://creativecommons.org/licenses/by/4.0/
|
The classical Domino problem asks whether there exists a tiling in which none
of the forbidden patterns given as input appear. In this paper, we consider the
aperiodic version of the Domino problem: given as input a family of forbidden
patterns, does it allow an aperiodic tiling? The input may correspond to a
subshift of finite type, a sofic subshift or an effective subshift.
arXiv:1805.08829 proved that this problem is co-recursively enumerable
($\Pi_0^1$-complete) in dimension 2 for geometrical reasons. We show that it is
much harder, namely analytic ($\Sigma_1^1$-complete), in higher dimension: $d
\geq 4$ in the finite type case, $d \geq 3$ for sofic and effective subshifts.
The reduction uses a subshift embedding universal computation and two
additional dimensions to control periodicity. This complexity jump is
surprising for two reasons: first, it separates 2- and 3-dimensional subshifts,
whereas most subshift properties are the same in dimension 2 and higher;
second, it is unexpectedly large.
|
[{'version': 'v1', 'created': 'Tue, 15 Feb 2022 13:06:51 GMT'}]
|
2022-02-16
|
[array(['Callard', 'Antonin', ''], dtype=object)
array(['de Menibus', 'Benjamin Hellouin', ''], dtype=object)]
|
995 |
1401.1714
|
Cedomir Stefanovic
|
Cedomir Stefanovic, Miyu Momoda, Petar Popovski
|
Exploiting Capture Effect in Frameless ALOHA for Massive Wireless Random
Access
|
Accepted for presentation at IEEE WCNC'14 Track 2 (MAC and
Cross-Layer Design)
| null |
10.1109/WCNC.2014.6952516
| null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The analogies between successive interference cancellation (SIC) in slotted
ALOHA framework and iterative belief-propagation erasure-decoding, established
recently, enabled the application of the erasure-coding theory and tools to
design random access schemes. This approach leads to throughput substantially
higher than the one offered by the traditional slotted ALOHA. In the simplest
setting, SIC progresses when a successful decoding occurs for a single user
transmission. In this paper we consider a more general setting of a channel
with capture and explore how such physical model affects the design of the
coded random access protocol. Specifically, we assess the impact of capture
effect in Rayleigh fading scenario on the design of SIC-enabled slotted ALOHA
schemes. We provide analytical treatment of frameless ALOHA, which is a special
case of SIC-enabled ALOHA scheme. We demonstrate both through analytical and
simulation results that the capture effect can be very beneficial in terms of
achieved throughput.
|
[{'version': 'v1', 'created': 'Wed, 8 Jan 2014 14:52:16 GMT'}]
|
2016-11-17
|
[array(['Stefanovic', 'Cedomir', ''], dtype=object)
array(['Momoda', 'Miyu', ''], dtype=object)
array(['Popovski', 'Petar', ''], dtype=object)]
|
996 |
hep-th/9211056
|
Jerome Gauntlett
|
Jerome P. Gauntlett, Jeffrey A. Harvey and James T. Liu
|
Magnetic Monopoles in String Theory
|
24 pages (Corrected title)
|
Nucl.Phys.B409:363-381,1993
|
10.1016/0550-3213(93)90584-C
|
EFI-92-67, IFP-434-UNC
|
hep-th
| null |
Magnetic monopole solutions to heterotic string theory are discussed in
toroidal compactifications to four spacetime dimensions. Particular emphasis is
placed on the relation to previously studied fivebrane solutions in ten
dimensions and on the possibility of constructing exact monopole solutions
related to symmetric fivebranes.
|
[{'version': 'v1', 'created': 'Thu, 12 Nov 1992 19:14:48 GMT'}
{'version': 'v2', 'created': 'Fri, 13 Nov 1992 14:39:21 GMT'}]
|
2010-11-01
|
[array(['Gauntlett', 'Jerome P.', ''], dtype=object)
array(['Harvey', 'Jeffrey A.', ''], dtype=object)
array(['Liu', 'James T.', ''], dtype=object)]
|
997 |
2110.03310
|
Matias Vestberg
|
Kaj Nystr\"om, Matias Vestberg
|
Solving the Dirichlet problem for the Monge-Amp\`ere equation using
neural networks
|
33 pages, 13 figures, 6 tables
| null | null | null |
stat.ML cs.LG cs.NA math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Monge-Amp\`ere equation is a fully nonlinear partial differential
equation (PDE) of fundamental importance in analysis, geometry and in the
applied sciences. In this paper we solve the Dirichlet problem associated with
the Monge-Amp\`ere equation using neural networks and we show that an ansatz
using deep input convex neural networks can be used to find the unique convex
solution. As part of our analysis we study the effect of singularities,
discontinuities and noise in the source function, we consider nontrivial
domains, and we investigate how the method performs in higher dimensions. We
investigate the convergence numerically and present error estimates based on a
stability result. We also compare this method to an alternative approach in
which standard feed-forward networks are used together with a loss function
which penalizes lack of convexity.
|
[{'version': 'v1', 'created': 'Thu, 7 Oct 2021 10:00:05 GMT'}
{'version': 'v2', 'created': 'Fri, 15 Apr 2022 10:56:51 GMT'}
{'version': 'v3', 'created': 'Tue, 13 Jun 2023 10:10:54 GMT'}]
|
2023-06-14
|
[array(['Nyström', 'Kaj', ''], dtype=object)
array(['Vestberg', 'Matias', ''], dtype=object)]
|
998 |
2112.13896
|
Subutai Ahmad
|
Kevin Lee Hunter, Lawrence Spracklen and Subutai Ahmad
|
Two Sparsities Are Better Than One: Unlocking the Performance Benefits
of Sparse-Sparse Networks
|
32 pages and 20 figures
| null | null | null |
cs.LG cs.AI cs.AR cs.NE
|
http://creativecommons.org/licenses/by/4.0/
|
In principle, sparse neural networks should be significantly more efficient
than traditional dense networks. Neurons in the brain exhibit two types of
sparsity; they are sparsely interconnected and sparsely active. These two types
of sparsity, called weight sparsity and activation sparsity, when combined,
offer the potential to reduce the computational cost of neural networks by two
orders of magnitude. Despite this potential, today's neural networks deliver
only modest performance benefits using just weight sparsity, because
traditional computing hardware cannot efficiently process sparse networks. In
this article we introduce Complementary Sparsity, a novel technique that
significantly improves the performance of dual sparse networks on existing
hardware. We demonstrate that we can achieve high performance running
weight-sparse networks, and we can multiply those speedups by incorporating
activation sparsity. Using Complementary Sparsity, we show up to 100X
improvement in throughput and energy efficiency performing inference on FPGAs.
We analyze scalability and resource tradeoffs for a variety of kernels typical
of commercial convolutional networks such as ResNet-50 and MobileNetV2. Our
results with Complementary Sparsity suggest that weight plus activation
sparsity can be a potent combination for efficiently scaling future AI models.
|
[{'version': 'v1', 'created': 'Mon, 27 Dec 2021 20:41:01 GMT'}]
|
2021-12-30
|
[array(['Hunter', 'Kevin Lee', ''], dtype=object)
array(['Spracklen', 'Lawrence', ''], dtype=object)
array(['Ahmad', 'Subutai', ''], dtype=object)]
|
999 |
0802.1105
|
Axel Pelster
|
Sebastian F. Brandt, Axel Pelster, Ralf Wessel
|
Noise-dependent stability of the synchronized state in a coupled system
of active rotators
|
Author Information under
http://www.theo-phys.uni-essen.de/tp/ags/pelster_dir/
|
World Journal of Condensed Matter Physics 1, 88-96 (2011)
| null | null |
nlin.PS nlin.CD
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a Kuramoto model for the dynamics of an excitable system
consisting of two coupled active rotators. Depending on both the coupling
strength and the noise, the two rotators can be in a synchronized or
desynchronized state. The synchronized state of the system is most stable for
intermediate noise intensity in the sense that the coupling strength required
to desynchronize the system is maximal at this noise level. We evaluate the
phase boundary between synchronized and desynchronized states through numerical
and analytical calculations.
|
[{'version': 'v1', 'created': 'Fri, 8 Feb 2008 08:36:49 GMT'}]
|
2011-09-27
|
[array(['Brandt', 'Sebastian F.', ''], dtype=object)
array(['Pelster', 'Axel', ''], dtype=object)
array(['Wessel', 'Ralf', ''], dtype=object)]
|
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