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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
6,500 |
hep-ph/0503211
|
Masahide Yamaguchi
|
Robert H. Brandenberger, Wessyl Kelly, and Masahide Yamaguchi
|
Electroweak Baryogenesis with Embedded Domain Walls
|
12 pages, no figure
|
Prog.Theor.Phys.117:823-834,2007
|
10.1143/PTP.117.823
| null |
hep-ph astro-ph
| null |
We consider electroweak baryogenesis mediated by embedded domain walls.
Embedded domain walls originating from a symmetry breaking phase transition are
stabilized by thermal plasma effects, so that the electroweak symmetry is
unbroken in their cores. For this reason, the cosmological evolution of such
domain walls can generate a sufficiently large baryon asymmetry, irrespective
of the order of the electroweak phase transition. For embedded domain walls,
the condition that the energy of the universe not be dominated by the energy of
the domain walls is relaxed significantly, and it is shown to be compatible
with our scenario of electroweak baryogenesis.
|
[{'version': 'v1', 'created': 'Tue, 22 Mar 2005 06:29:04 GMT'}
{'version': 'v2', 'created': 'Thu, 17 May 2007 04:50:33 GMT'}]
|
2008-11-26
|
[array(['Brandenberger', 'Robert H.', ''], dtype=object)
array(['Kelly', 'Wessyl', ''], dtype=object)
array(['Yamaguchi', 'Masahide', ''], dtype=object)]
|
6,501 |
1701.07356
|
Costas Papadopoulos
|
Hjalte Frellesvig and Costas G. Papadopoulos
|
Cuts of Feynman Integrals in Baikov representation
|
21 pages, accepted for publication in JHEP, one ancillary file
| null |
10.1007/JHEP04(2017)083
| null |
hep-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Based on the Baikov representation, we present a systematic approach to
compute cuts of Feynman Integrals, appropriately defined in $d$ dimensions. The
information provided by these computations may be used to determine the class
of functions needed to analytically express the full integrals.
|
[{'version': 'v1', 'created': 'Wed, 25 Jan 2017 15:43:22 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Apr 2017 15:59:14 GMT'}]
|
2017-05-24
|
[array(['Frellesvig', 'Hjalte', ''], dtype=object)
array(['Papadopoulos', 'Costas G.', ''], dtype=object)]
|
6,502 |
2306.06512
|
Ulrich Reitebuch
|
Ulrich Reitebuch
|
Direct Construction of Aperiodic Tilings with the Hat Monotile
|
19 pages, 20 figures
| null | null | null |
math.CO
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
In 2023, the quest for an aperiodic monotile was answered by the hat
monotile. In this article, structures in this aperiodic tiling are discovered,
which allow for a direct computation of the tiling, similar to well-known
methods for the Penrose tilings.
|
[{'version': 'v1', 'created': 'Sat, 10 Jun 2023 19:20:58 GMT'}]
|
2023-06-13
|
[array(['Reitebuch', 'Ulrich', ''], dtype=object)]
|
6,503 |
1801.03757
|
Juho Lankinen
|
Juho Lankinen and Iiro Vilja
|
Decaying Massive Particle in Matter and Radiation Dominated Eras
|
6 pages, 2 figures
|
Phys. Rev. D 97, 065004 (2018)
|
10.1103/PhysRevD.97.065004
| null |
gr-qc astro-ph.CO hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
According to the standard model of cosmology, the early universe has been
dominated by radiation or non-relativistic matter in several eras of its
history. However, many cosmological calculations involving particle processes
are commonly done using Minkowskian results for them, although, for more
precise treatment, quantum field theory in curved spacetime is needed. This
paper aims to fill this gap by presenting decay rates for matter and radiation
dominated universes in this more precise treatment. We provide a study of the
average decay rates for a process where a conformally coupled massive scalar
field decays into massless scalar particles. It is found that the presence of a
curved spacetime modifies the Minkowskian result considerably for early times
but asymptotically only by an additive term proportional to the inverse of mass
and interaction time. Thus, the correction is small for large time scales, but
on the time scales of the order of $m\sim t$, the relative correction term may
be of importance.
|
[{'version': 'v1', 'created': 'Thu, 11 Jan 2018 13:47:42 GMT'}]
|
2018-03-12
|
[array(['Lankinen', 'Juho', ''], dtype=object)
array(['Vilja', 'Iiro', ''], dtype=object)]
|
6,504 |
gr-qc/0605133
|
Saulo Carneiro
|
Saulo Carneiro
|
From de Sitter to de Sitter: A non-singular inflationary universe driven
by vacuum
|
This essay received an "honorable mention" in the 2006 Essay
Competition of the Gravity Research Foundation
|
Int.J.Mod.Phys.D15:2241-2247,2006
|
10.1142/S0218271806009510
| null |
gr-qc astro-ph hep-th
| null |
A semi-classical analysis of vacuum energy in the expanding spacetime
suggests that the cosmological term decays with time, with a concomitant matter
production. For early times we find, in Planck units, $\Lambda \approx H^4$,
where H is the Hubble parameter. The corresponding cosmological solution has no
initial singularity, existing since an infinite past. During an infinitely long
period we have a quasi-de Sitter, inflationary universe, with $H \approx 1$.
However, at a given time, the expansion undertakes a phase transition, with H
and $\Lambda$ decreasing to nearly zero in a few Planck times, producing a huge
amount of radiation. On the other hand, the late-time scenario is similar to
the standard model, with the radiation phase followed by a dust era, which
tends asymptotically to a de Sitter universe, with vacuum dominating again.
|
[{'version': 'v1', 'created': 'Fri, 26 May 2006 00:15:18 GMT'}
{'version': 'v2', 'created': 'Fri, 26 May 2006 21:02:23 GMT'}]
|
2008-11-26
|
[array(['Carneiro', 'Saulo', ''], dtype=object)]
|
6,505 |
2211.15231
|
Wanqian Yang
|
Wanqian Yang, Polina Kirichenko, Micah Goldblum, Andrew Gordon Wilson
|
Chroma-VAE: Mitigating Shortcut Learning with Generative Classifiers
|
Presented at the 36th Conference on Neural Information Processing
Systems (NeurIPS 2022)
| null | null | null |
cs.LG
|
http://creativecommons.org/licenses/by/4.0/
|
Deep neural networks are susceptible to shortcut learning, using simple
features to achieve low training loss without discovering essential semantic
structure. Contrary to prior belief, we show that generative models alone are
not sufficient to prevent shortcut learning, despite an incentive to recover a
more comprehensive representation of the data than discriminative approaches.
However, we observe that shortcuts are preferentially encoded with minimal
information, a fact that generative models can exploit to mitigate shortcut
learning. In particular, we propose Chroma-VAE, a two-pronged approach where a
VAE classifier is initially trained to isolate the shortcut in a small latent
subspace, allowing a secondary classifier to be trained on the complementary,
shortcut-free latent subspace. In addition to demonstrating the efficacy of
Chroma-VAE on benchmark and real-world shortcut learning tasks, our work
highlights the potential for manipulating the latent space of generative
classifiers to isolate or interpret specific correlations.
|
[{'version': 'v1', 'created': 'Mon, 28 Nov 2022 11:27:50 GMT'}]
|
2022-11-29
|
[array(['Yang', 'Wanqian', ''], dtype=object)
array(['Kirichenko', 'Polina', ''], dtype=object)
array(['Goldblum', 'Micah', ''], dtype=object)
array(['Wilson', 'Andrew Gordon', ''], dtype=object)]
|
6,506 |
1003.0606
|
Hiroshi Kontani
|
Takuro Tanaka, Hirosho Kontani
|
Intrinsic Spin and Orbital Hall Effects in Heavy Fermion Systems
|
11 pages, 6 figures
|
Phys. Rev. B 81, 224401 (2010)
|
10.1103/PhysRevB.81.224401
| null |
cond-mat.str-el cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the intrinsic spin Hall effect (SHE) based on the orbitally
degenerate periodic Anderson model, which is an effective model for heavy
fermion systems. In the very low resistivity regime, the magnitude of the
intrinsic spin Hall conductivity (SHC) is estimated as $2000 \sim 3000 \hbar
e^{-1} \Omega^{-1} cm^{-1}$; It is about 10 times larger than that in Pt. Its
sign is negative (positive) in Ce (Yb) compound systems with $f^1$ ($f^{13}$)
configuration. Interestingly, the obtained expression for the SHC depends only
on the density of conduction electrons, but is independent of the strength of
the c-f mixing potential and the mass-enhancement factor. The origin of the
huge SHE is the spin-dependent Berry phase induced by the complex f-orbital
wavefunction, which we call the "orbital Aharonov-Bohm effect".
|
[{'version': 'v1', 'created': 'Tue, 2 Mar 2010 14:41:38 GMT'}]
|
2010-09-29
|
[array(['Tanaka', 'Takuro', ''], dtype=object)
array(['Kontani', 'Hirosho', ''], dtype=object)]
|
6,507 |
2202.00557
|
Jesse Meyer
|
Benton J. Anderson, Jesse G. Meyer
|
Finding the optimal human strategy for Wordle using maximum correct
letter probabilities and reinforcement learning
| null | null | null | null |
cs.CL
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Wordle is an online word puzzle game that gained viral popularity in January
2022. The goal is to guess a hidden five letter word. After each guess, the
player gains information about whether the letters they guessed are present in
the word, and whether they are in the correct position. Numerous blogs have
suggested guessing strategies and starting word lists that improve the chance
of winning. Optimized algorithms can win 100% of games within five of the six
allowed trials. However, it is infeasible for human players to use these
algorithms due to an inability to perfectly recall all known 5-letter words and
perform complex calculations that optimize information gain. Here, we present
two different methods for choosing starting words along with a framework for
discovering the optimal human strategy based on reinforcement learning. Human
Wordle players can use the rules we discover to optimize their chance of
winning.
|
[{'version': 'v1', 'created': 'Tue, 1 Feb 2022 17:03:26 GMT'}]
|
2022-02-02
|
[array(['Anderson', 'Benton J.', ''], dtype=object)
array(['Meyer', 'Jesse G.', ''], dtype=object)]
|
6,508 |
1611.01107
|
Huy Tran
|
Peter K. Friz and Huy Tran
|
On the regularity of SLE trace
|
16 pages, 4 figures. Comments are welcome
| null | null | null |
math.PR math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We revisit regularity of SLE trace, for all $\kappa \neq 8$, and establish
Besov regularity under the usual half-space capacity parametrization. With an
embedding theorem of Garsia--Rodemich--Rumsey type, we obtain finite moments
(and hence almost surely) optimal variation regularity with index $\min (1 +
\kappa / 8, 2) $, improving on previous works of Werness, and also (optimal)
H\"older regularity \`a la Johansson Viklund and Lawler.
|
[{'version': 'v1', 'created': 'Tue, 1 Nov 2016 22:29:53 GMT'}]
|
2016-11-04
|
[array(['Friz', 'Peter K.', ''], dtype=object)
array(['Tran', 'Huy', ''], dtype=object)]
|
6,509 |
1711.06860
|
Stephen Glasby
|
S.P. Glasby, Cheryl E. Praeger and Binzhou Xia
|
`Norman involutions' and tensor products of unipotent Jordan blocks
|
27 pages, 5 tables, 1 figure Minor typos corrected
| null | null | null |
math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A good knowledge of the Jordan canonical form (JCF) for a tensor product of
`Jordan blocks' is key to understanding the actions of $p$-groups of matrices
in characteristic $p$. The JCF corresponds to a certain partition which depends
on the characteristic $p$, and the study of these partitions dates back to
Aitken's work in 1934. Equivalently each JCF corresponds to a certain
permutation $\pi$ introduced by Norman in 1995. These permutations $\pi =
\pi(r,s,p)$ depend on the dimensions $r$, $s$ of the Jordan blocks, and on $p$.
We give necessary and sufficient conditions for $\pi(r,s,p)$ to be trivial,
building on work of M.J. Barry. We show that when $\pi(r,s,p)$ is nontrivial,
it is an involution involving reversals. Finally, we prove that the group
$G(r,p)$ generated by $\pi(r,s,p)$ for all $s$, `factors' as a wreath product
corresponding to the factorisation $r=ab$ as a product of its $p'$-part $a$ and
$p$-part $b$: precisely $G(r, p)={\sf S}_a\wr {\sf D}_b$ where ${\sf S}_a$ is a
symmetric group of degree $a$, and ${\sf D}_b$ is a dihedral group of degree
$b$.
|
[{'version': 'v1', 'created': 'Sat, 18 Nov 2017 13:30:07 GMT'}
{'version': 'v2', 'created': 'Sat, 3 Nov 2018 07:25:35 GMT'}]
|
2018-11-06
|
[array(['Glasby', 'S. P.', ''], dtype=object)
array(['Praeger', 'Cheryl E.', ''], dtype=object)
array(['Xia', 'Binzhou', ''], dtype=object)]
|
6,510 |
1810.08687
|
Sunrose Shrestha
|
Sunrose T. Shrestha
|
Counting Formulae for Square-tiled Surfaces in Genus Two
|
41 pages including Appendices, 21 pages without Appendices, 13
figures
| null | null | null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Square-tiled surfaces can be classified by their number of squares and their
cylinder diagrams (also called realizable separatrix diagrams). For the case of
$n$ squares and two cone points with angle $4 \pi$ each, we set up and
parametrize the classification into four diagrams. Our main result is to
provide formulae for enumeration of square-tiled surfaces in these four
diagrams, completing the detailed count for genus two. The formulae are in
terms of various well-studied arithmetic functions, enabling us to give
asymptotics for each diagram using a new calculation for additive convolutions
of divisor functions that was recently derived by the author and collaborators.
Interestingly, two of the four cylinder diagrams occur with asymptotic density
1/4, but the other diagrams occur with different (and irrational) densities.
|
[{'version': 'v1', 'created': 'Fri, 19 Oct 2018 20:55:56 GMT'}]
|
2018-10-23
|
[array(['Shrestha', 'Sunrose T.', ''], dtype=object)]
|
6,511 |
1609.00619
|
Thiago Colla
|
Thiago Colla, Matheus Girotto, Alexandre P. dos Santos and Yan Levin
|
Charge neutrality breakdown in confined aqueous electrolytes: theory and
simulation
| null | null |
10.1063/1.4962198
| null |
cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study, using Density Functional theory and Monte Carlo simulations,
aqueous electrolyte solutions between charged infinite planar surfaces, in a
contact with a bulk salt reservoir. In agreement with recent experimental
observations [Z. Luo et al., Nat. Comm. 6, 6358 (2015)], we find that the
confined electrolyte lacks local charge neutrality. We show that a Density
Functional Theory (DFT) based on a bulk- HNC expansion properly accounts for
strong electrostatic correlations and allows us to accurately calculate the
ionic density profiles between the charged surfaces, even for electrolytes
containing trivalent counterions. The DFT allows us to explore the degree of
local charge neutrality violation, as a function of plate separation and bulk
electrolyte concentration, and to accurately calculate the interaction force
between the charged surfaces.
|
[{'version': 'v1', 'created': 'Fri, 2 Sep 2016 14:35:41 GMT'}]
|
2016-09-21
|
[array(['Colla', 'Thiago', ''], dtype=object)
array(['Girotto', 'Matheus', ''], dtype=object)
array(['Santos', 'Alexandre P. dos', ''], dtype=object)
array(['Levin', 'Yan', ''], dtype=object)]
|
6,512 |
1105.2576
|
Adam Koprowski
|
Adam Koprowski (MLstate, Paris, France), Henri Binsztok (MLstate,
Paris, France)
|
TRX: A Formally Verified Parser Interpreter
|
26 pages, LMCS
|
Logical Methods in Computer Science, Volume 7, Issue 2 (June 24,
2011) lmcs:686
|
10.2168/LMCS-7(2:18)2011
| null |
cs.LO cs.FL cs.PL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Parsing is an important problem in computer science and yet surprisingly
little attention has been devoted to its formal verification. In this paper, we
present TRX: a parser interpreter formally developed in the proof assistant
Coq, capable of producing formally correct parsers. We are using parsing
expression grammars (PEGs), a formalism essentially representing recursive
descent parsing, which we consider an attractive alternative to context-free
grammars (CFGs). From this formalization we can extract a parser for an
arbitrary PEG grammar with the warranty of total correctness, i.e., the
resulting parser is terminating and correct with respect to its grammar and the
semantics of PEGs; both properties formally proven in Coq.
|
[{'version': 'v1', 'created': 'Thu, 12 May 2011 20:43:38 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Jun 2011 20:51:51 GMT'}]
|
2015-07-01
|
[array(['Koprowski', 'Adam', '', 'MLstate, Paris, France'], dtype=object)
array(['Binsztok', 'Henri', '', 'MLstate,\n Paris, France'], dtype=object)]
|
6,513 |
cond-mat/9912402
|
Kim Sneppen
|
Kristine Bourke Arnvig (1), Steen Pedersen (1) and Kim Sneppen (2)
((1) Institute of Molecular Biology, Copenhagen University, (2) Nordita,
Copenhagen, Denmark)
|
Thermodynamics of Heat Shock Response
|
To be published in Physical Review Letters
| null |
10.1103/PhysRevLett.84.3005
|
Nordita Preprint 1999-82
|
cond-mat q-bio
| null |
Production of heat shock proteins are induced when a living cell is exposed
to a rise in temperature. The heat shock response of protein DnaK synthesis in
E.coli for temperature shifts from temperature T to T plus 7 degrees,
respectively to T minus 7 degrees is measured as function of the initial
temperature T. We observe a reversed heat shock at low T. The magnitude of the
shock increases when one increase the distance to the temperature $T_0 \approx
23^o$, thereby mimicking the non monotous stability of proteins at low
temperature. Further we found that the variation of the heat shock with T
quantitatively follows the thermodynamic stability of proteins with
temperature. This suggest that stability related to hot as well as cold
unfolding of proteins is directly implemented in the biological control of
protein folding. We demonstrate that such an implementation is possible in a
minimalistic chemical network.
|
[{'version': 'v1', 'created': 'Wed, 22 Dec 1999 10:16:12 GMT'}]
|
2009-10-31
|
[array(['Arnvig', 'Kristine Bourke', ''], dtype=object)
array(['Pedersen', 'Steen', ''], dtype=object)
array(['Sneppen', 'Kim', ''], dtype=object)]
|
6,514 |
2012.04302
|
Vishnu Narayan
|
Noah Brustle, Sarah Clusiau, Vishnu V. Narayan, Ndiam\'e Ndiaye, Bruce
Reed and Ben Seamone
|
The Speed and Threshold of the Biased Hamilton Cycle Game
|
11 pages
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that there is a constant C such that for any
$b<\frac{n}{\ln{n}}-\frac{Cn}{(\ln{n})^{3/2}}$, Maker wins the Maker-Breaker
Hamilton cycle game in $n+\frac{Cn}{\sqrt{\ln{n}}}$ steps.
|
[{'version': 'v1', 'created': 'Tue, 8 Dec 2020 09:21:05 GMT'}]
|
2020-12-09
|
[array(['Brustle', 'Noah', ''], dtype=object)
array(['Clusiau', 'Sarah', ''], dtype=object)
array(['Narayan', 'Vishnu V.', ''], dtype=object)
array(['Ndiaye', 'Ndiamé', ''], dtype=object)
array(['Reed', 'Bruce', ''], dtype=object)
array(['Seamone', 'Ben', ''], dtype=object)]
|
6,515 |
1208.4350
|
Stefan Wenger
|
Kai Rajala, Stefan Wenger
|
An upper gradient approach to weakly differentiable cochains
| null | null | null | null |
math.AP math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The aim of the present paper is to define a notion of weakly differentiable
cochain in the generality of metric measure spaces and to study basic
properties of such cochains. Our cochains are (sub-)linear functionals on a
subspace of chains, and a suitable notion of chains in metric spaces is given
by Ambrosio-Kirchheim's theory of metric currents. The notion of weak
differentiability we introduce is in analogy with Heinonen-Koskela's concept of
upper gradients of functions. In one of the main results of our paper, we prove
continuity estimates for cochains with $p$-integrable upper gradient in
$n$-dimensional Lie groups endowed with a left-invariant Finsler metric. Our
result generalizes the well-known Morrey-Sobolev inequality for Sobolev
functions. Finally, we prove several results relating capacity and modulus to
Hausdorff dimension.
|
[{'version': 'v1', 'created': 'Tue, 21 Aug 2012 19:37:02 GMT'}]
|
2012-08-22
|
[array(['Rajala', 'Kai', ''], dtype=object)
array(['Wenger', 'Stefan', ''], dtype=object)]
|
6,516 |
2104.14325
|
Ananda Hota
|
Ananda Hota (1), Ashish Devaraj (2), Ananta C. Pradhan (3), C S Stalin
(2), Koshy George (4), Abhisek Mohapatra (3), Soo-Chang Rey (5), Youichi
Ohyama (6), Sravani Vaddi (7), Renuka Pechetti (8), Ramya Sethuram (2), Jessy
Jose (9), Jayashree Roy (10), Chiranjib Konar (11) ((1) UM-DAE Centre for
Excellence in Basic Sciences, University of Mumbai, India (2) Indian
Institute of Astrophysics, India (3) National Institute of Technology,
Rourkela, India (4) Ludwig-Maximilians-Universit\"at, Germany (5) Chungnam
National University, Republic of Korea (6) Academia Sinica Institute of
Astronomy and Astrophysics, Taiwan (7) Arecibo Observatory, USA (8) Liverpool
John Moores University, UK (9) Indian Institute of Science Education and
Research (IISER) Tirupati, India (10) Inter-University Centre for Astronomy
and Astrophysics (IUCAA), India (11) Amity Institute of Applied Sciences,
India)
|
The Sharpest Ultraviolet view of the star formation in an extreme
environment of the nearest Jellyfish Galaxy IC 3418
|
12 pages, 9 figures. Accepted for publication in the Special Issue of
the Journal of Astrophysics and Astronomy on ASTROSAT
| null |
10.1007/s12036-021-09764-w
| null |
astro-ph.GA astro-ph.CO astro-ph.SR
|
http://creativecommons.org/licenses/by/4.0/
|
We present the far ultraviolet (FUV) imaging of the nearest Jellyfish or
Fireball galaxy IC3418/VCC 1217, in the Virgo cluster of galaxies, using
Ultraviolet Imaging Telescope (UVIT) onboard the ASTROSAT satellite. The young
star formation observed here in the 17 kpc long turbulent wake of IC3418, due
to ram pressure stripping of cold gas surrounded by hot intra-cluster medium,
is a unique laboratory that is unavailable in the Milkyway. We have tried to
resolve star forming clumps, seen compact to GALEX UV images, using better
resolution available with the UVIT and incorporated UV-optical images from
Hubble Space Telescope archive. For the first time, we resolve the compact star
forming clumps (fireballs) into sub-clumps and subsequently into a possibly
dozen isolated stars. We speculate that many of them could be blue supergiant
stars which are cousins of SDSS J122952.66+112227.8, the farthest star (~17
Mpc) we had found earlier surrounding one of these compact clumps. We found
evidence of star formation rate (4 - 7.4 x 10^-4 M_sun per yr ) in these
fireballs, estimated from UVIT flux densities, to be increasing with the
distance from the parent galaxy. We propose a new dynamical model in which the
stripped gas may be developing vortex street where the vortices grow to compact
star forming clumps due to self-gravity. Gravity winning over turbulent force
with time or length along the trail can explain the puzzling trend of higher
star formation rate and bluer/younger stars observed in fireballs farther away
from the parent galaxy.
|
[{'version': 'v1', 'created': 'Thu, 29 Apr 2021 13:25:19 GMT'}]
|
2021-08-11
|
[array(['Hota', 'Ananda', ''], dtype=object)
array(['Devaraj', 'Ashish', ''], dtype=object)
array(['Pradhan', 'Ananta C.', ''], dtype=object)
array(['Stalin', 'C S', ''], dtype=object)
array(['George', 'Koshy', ''], dtype=object)
array(['Mohapatra', 'Abhisek', ''], dtype=object)
array(['Rey', 'Soo-Chang', ''], dtype=object)
array(['Ohyama', 'Youichi', ''], dtype=object)
array(['Vaddi', 'Sravani', ''], dtype=object)
array(['Pechetti', 'Renuka', ''], dtype=object)
array(['Sethuram', 'Ramya', ''], dtype=object)
array(['Jose', 'Jessy', ''], dtype=object)
array(['Roy', 'Jayashree', ''], dtype=object)
array(['Konar', 'Chiranjib', ''], dtype=object)]
|
6,517 |
0709.4143
|
Yihong Hu
|
Yihong Hu, Daoli Zhu, Nianqu Zhu
|
A weighted network evolution model based on passenger behavior
|
4 pages, 3 figures
| null | null | null |
physics.soc-ph physics.data-an
| null |
This paper presents an evolution model of weighted networks in which the
structural growth and weight dynamics are driven by human behavior, i.e.
passenger route choice behavior. Transportation networks grow due to people's
increasing travel demand and the pattern of growth is determined by their route
choice behavior. In airline networks passengers often transfer from a third
airport instead of flying directly to the destination, which contributes to the
hubs formation and finally the scale-free statistical property. In this model
we assume at each time step there emerges a new node with m travel
destinations. Then the new node either connects destination directly with the
probability p or transfers from a third node with the probability 1-p. The
analytical result shows degree and strength both obey power-law distribution
with the exponent between 2.33 and 3 depending on p. The weights also obey
power-law distribution. The clustering coefficient, degree assortatively
coefficient and degree-strength correlation are all dependent on the
probability p. This model can also be used in social networks.
|
[{'version': 'v1', 'created': 'Wed, 26 Sep 2007 12:06:18 GMT'}]
|
2007-09-27
|
[array(['Hu', 'Yihong', ''], dtype=object)
array(['Zhu', 'Daoli', ''], dtype=object)
array(['Zhu', 'Nianqu', ''], dtype=object)]
|
6,518 |
cond-mat/9603199
| null |
Girish S. Setlur and Y. C. Chang (Univ. of Illinois, Urbana)
|
The Role of Nonequilibrium Dynamical Screening in Carrier Thermalization
|
Revised version with additional refs. 12 pages, figs. available upon
request; Submitted to Phys. Rev. B
| null |
10.1103/PhysRevB.55.1517
| null |
cond-mat
| null |
We investigate the role played by nonequilibrium dynamical screening in the
thermalization of carriers in a simplified two-component two-band model of a
semiconductor. The main feature of our approach is the theoretically sound
treatment of collisions. We abandon Fermi's Golden rule in favor of a
nonequilibrium field theoretic formalism as the former is applicable only in
the long-time regime. We also introduce the concept of nonequilibrium dynamical
screening. The dephasing of excitonic quantum beats as a result of
carrier-carrier scattering is brought out. At low densities it is found that
the dephasing times due to carrier-carrier scattering is in picoseconds and not
femtoseconds, in agreement with experiments. The polarization dephasing rates
are computed as a function of the excited carrier density and it is found that
the dephasing rate for carrier-carrier scattering is proportional to the
carrier density at ultralow densities. The scaling relation is sublinear at
higher densities, which enables a comparison with experiment.
|
[{'version': 'v1', 'created': 'Sun, 31 Mar 1996 03:04:47 GMT'}
{'version': 'v2', 'created': 'Wed, 24 Apr 1996 04:29:26 GMT'}]
|
2009-10-28
|
[array(['Setlur', 'Girish S.', '', 'Univ. of Illinois, Urbana'],
dtype=object)
array(['Chang', 'Y. C.', '', 'Univ. of Illinois, Urbana'], dtype=object)]
|
6,519 |
1803.10050
|
Andrew Young
|
A. J. Young, I. McHardy, D. Emmanoulopoulos and S. Connolly
|
The absence of a thin disc in M81
|
7 pages, 7 figures, to appear in MNARS
| null |
10.1093/mnras/sty509
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the results of simultaneous Suzaku and NuSTAR observations of the
nearest Low-Luminosity Active Galactic Nucleus (LLAGN), M81*. The spectrum is
well described by a cut-off power law plus narrow emission lines from Fe
K$\alpha$, Fe XXV and Fe XXVI. There is no evidence of Compton reflection from
an optically thick disc, and we obtain the strongest constraint on the
reflection fraction in M81* to date, with a best-fit value of $R = 0.0$ with an
upper limit of $R < 0.1$. The Fe K$\alpha$ line may be produced in optically
thin, $N_H = 1 \times 10^{23}$ cm$^{-2}$, gas located in the equatorial plane
that could be the broad line region. The ionized iron lines may originate in
the hot, inner accretion flow. The X-ray continuum shows significant
variability on $\sim 40$ ks timescales suggesting that the primary X-ray source
is $\sim 100$s of gravitational radii in size. If this X-ray source illuminates
any putative optically thick disc, the weakness of reflection implies that such
a disc lies outside a few $\times 10^3$ gravitational radii. An optically thin
accretion flow inside a truncated optically thick disc appears to be a common
feature of LLAGN that are accreting at only a tiny fraction of the Eddington
limit.
|
[{'version': 'v1', 'created': 'Tue, 27 Mar 2018 12:54:28 GMT'}]
|
2018-04-04
|
[array(['Young', 'A. J.', ''], dtype=object)
array(['McHardy', 'I.', ''], dtype=object)
array(['Emmanoulopoulos', 'D.', ''], dtype=object)
array(['Connolly', 'S.', ''], dtype=object)]
|
6,520 |
hep-th/9811110
|
Armen Nersessian
|
A.Nersessian
|
Supergeometry in Equivariant Cohomology
|
7 pages, to be published in the memorial volume, dedicated to
V.I.Ogievetsky
|
Lect.Notes Phys. 524 (1997) 90-96
|
10.1007/BFb0104590
| null |
hep-th
| null |
We analyze $S^1$ equivariant cohomology from the supergeometrical point of
view. For this purpose we equip the external algebra of given manifold with
equivariant even super(pre)symplectic structure, and show, that its
Poincare-Cartan invariant defines equivariant Euler classes of surfaces. This
allows to derive localization formulae by use of superanalog of Stockes
theorem.
|
[{'version': 'v1', 'created': 'Thu, 12 Nov 1998 12:57:58 GMT'}]
|
2009-10-31
|
[array(['Nersessian', 'A.', ''], dtype=object)]
|
6,521 |
1812.06925
|
Samuel Muscinelli
|
Samuel P. Muscinelli, Wulfram Gerstner, Tilo Schwalger
|
How single neuron properties shape chaotic dynamics and signal
transmission in random neural networks
| null | null |
10.1371/journal.pcbi.1007122
| null |
cond-mat.dis-nn q-bio.NC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
While most models of randomly connected networks assume nodes with simple
dynamics, nodes in realistic highly connected networks, such as neurons in the
brain, exhibit intrinsic dynamics over multiple timescales. We analyze how the
dynamical properties of nodes (such as single neurons) and recurrent
connections interact to shape the effective dynamics in large randomly
connected networks. A novel dynamical mean-field theory for strongly connected
networks of multi-dimensional rate units shows that the power spectrum of the
network activity in the chaotic phase emerges from a nonlinear sharpening of
the frequency response function of single units. For the case of
two-dimensional rate units with strong adaptation, we find that the network
exhibits a state of "resonant chaos", characterized by robust, narrow-band
stochastic oscillations. The coherence of stochastic oscillations is maximal at
the onset of chaos and their correlation time scales with the adaptation
timescale of single units. Surprisingly, the resonance frequency can be
predicted from the properties of isolated units, even in the presence of
heterogeneity in the adaptation parameters. In the presence of these
internally-generated chaotic fluctuations, the transmission of weak,
low-frequency signals is strongly enhanced by adaptation, whereas signal
transmission is not influenced by adaptation in the non-chaotic regime. Our
theoretical framework can be applied to other mechanisms at the level of single
nodes, such as synaptic filtering, refractoriness or spike synchronization.
These results advance our understanding of the interaction between the dynamics
of single units and recurrent connectivity, which is a fundamental step toward
the description of biologically realistic network models in the brain, or, more
generally, networks of other physical or man-made complex dynamical units.
|
[{'version': 'v1', 'created': 'Mon, 17 Dec 2018 17:59:23 GMT'}
{'version': 'v2', 'created': 'Thu, 28 Feb 2019 18:34:20 GMT'}]
|
2019-09-11
|
[array(['Muscinelli', 'Samuel P.', ''], dtype=object)
array(['Gerstner', 'Wulfram', ''], dtype=object)
array(['Schwalger', 'Tilo', ''], dtype=object)]
|
6,522 |
1609.05273
|
George C. Cardoso
|
Osame Kinouchi, Leonardo D. H. Soares, George C. Cardoso
|
A simple centrality index for scientific social recognition
|
3 figures, 1 table
|
Physica A: Statistical Mechanics and its Applications 2017
| null | null |
cs.DL physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a new centrality index for bipartite network of papers and
authors that we call $K$-index. The $K$-index grows with the citation
performance of the papers that cite a given researcher and can seen as a
measure of scientific social recognition. Indeed, the $K$-index measures the
number of hubs, defined in a self-consistent way in the bipartite network, that
cites a given author. We show that the $K$-index can be computed by simple
inspection of the Web of Science platform and presents several advantages over
other centrality indexes, in particular Hirsch $h$-index. The $K$-index is
robust to self-citations, is not limited by the total number of papers
published by a researcher as occurs for the $h$-index and can distinguish in a
consistent way researchers that have the same $h$-index but very different
scientific social recognition. The $K$-index easily detects a known case of a
researcher with inflated number of papers, citations and $h$-index due to
scientific misconduct. Finally, we show that, in a sample of twenty-eight
physics Nobel laureates and twenty-eight highly cited non-Nobel-laureate
physicists, the $K$-index correlates better to the achievement of the prize
than the number of papers, citations, citations per paper, citing articles or
the $h$-index. Clustering researchers in a $K$ versus $h$ plot reveals
interesting outliers that suggest that these two indexes can present
complementary independent information.
|
[{'version': 'v1', 'created': 'Sat, 17 Sep 2016 02:25:02 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Oct 2016 21:34:24 GMT'}
{'version': 'v3', 'created': 'Thu, 8 Jun 2017 00:30:54 GMT'}
{'version': 'v4', 'created': 'Thu, 28 Sep 2017 15:52:03 GMT'}]
|
2017-09-29
|
[array(['Kinouchi', 'Osame', ''], dtype=object)
array(['Soares', 'Leonardo D. H.', ''], dtype=object)
array(['Cardoso', 'George C.', ''], dtype=object)]
|
6,523 |
1909.10533
|
Sigurd Sigersen Jensen
|
S. S. Jensen, J. K. J{\o}rgensen, L. E. Kristensen, K. Furuya, A.
Coutens, E. F. van Dishoeck, D. Harsono and M. V. Persson
|
ALMA observations of water deuteration: A physical diagnostic of the
formation of protostars
|
13 pages, 6 figures. Accepted for publication in A&A (18/09/2019)
|
A&A 631, A25 (2019)
|
10.1051/0004-6361/201936012
| null |
astro-ph.SR astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The deuterium fractionation of water can serve as a tracer for the chemical
and physical evolution of water during star formation and can constrain the
origin of water in Solar System bodies. We determine the HDO/H$_2$O ratio in
the inner warm gas toward three low-mass Class 0 protostars selected to be in
isolated cores, i.e., not associated with any cloud complexes. Previous sources
for which the HDO/H$_2$O ratio have been established were all part of larger
star-forming complexes. Targeting these isolated protostars allows comparison
of the water chemistry in isolated and clustered regions to determine the
influence of local cloud environment. We present ALMA observations of the HDO
$3_{1,2}$-$2_{2,1}$ and $2_{1,1}$-$2_{1,2}$ transitions at 225.897 GHz and
241.562 GHz along with the H$_2^{18}$O $3_{1,3}$-$2_{2,0}$ transition at
203.407 GHz. The high angular resolution (0\farcs3-1\farcs3) allow the study of
the inner warm envelope gas. Model-independent estimates for the HDO/H$_2$O
ratios are obtained and compared with previous determinations in the warm gas
toward low-mass protostars. We detect the targeted water transitions toward the
three sources with S/N > 5. We determine the HDO/H$_2$O ratio toward L483, B335
and BHR71-IRS1 to be ($2.2\pm0.4$)$\times 10^{-3}$, ($1.7\pm0.3$)$\times
10^{-3}$, and ($1.8\pm0.4$)$\times 10^{-3}$, respectively, assuming
$T_\mathrm{ex} = 124$ K. The degree of water deuteration of these isolated
protostars are a factor of 2-4 higher relative to Class 0 protostars that are
members of known nearby clustered star-forming regions. The results indicate
that the water deuterium fractionation is influenced by the local cloud
environment. This effect can be explained by variations in either collapse
timescales or temperatures, which depends on local cloud dynamics and could
provide a new method to decipher the history of young stars.
|
[{'version': 'v1', 'created': 'Mon, 23 Sep 2019 18:00:04 GMT'}]
|
2019-10-16
|
[array(['Jensen', 'S. S.', ''], dtype=object)
array(['Jørgensen', 'J. K.', ''], dtype=object)
array(['Kristensen', 'L. E.', ''], dtype=object)
array(['Furuya', 'K.', ''], dtype=object)
array(['Coutens', 'A.', ''], dtype=object)
array(['van Dishoeck', 'E. F.', ''], dtype=object)
array(['Harsono', 'D.', ''], dtype=object)
array(['Persson', 'M. V.', ''], dtype=object)]
|
6,524 |
1410.5420
|
Russell Brown
|
Russell A. Brown
|
Building a Balanced k-d Tree in O(kn log n) Time
|
11 pages, 9 figures, published at
http://jcgt.org/published/0004/01/03/
|
Journal of Computer Graphics Techniques (JCGT), vol. 4, no. 1,
50-68, 2015
| null | null |
cs.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The original description of the k-d tree recognized that rebalancing
techniques, such as are used to build an AVL tree or a red-black tree, are not
applicable to a k-d tree. Hence, in order to build a balanced k-d tree, it is
necessary to find the median of the data for each recursive subdivision of
those data. The sort or selection that is used to find the median for each
subdivision strongly influences the computational complexity of building a k-d
tree. This paper discusses an alternative algorithm that builds a balanced k-d
tree by presorting the data in each of k dimensions prior to building the tree.
It then preserves the order of these k sorts during tree construction and
thereby avoids the requirement for any further sorting. Moreover, this
algorithm is amenable to parallel execution via multiple threads. Compared to
an algorithm that finds the median for each recursive subdivision, this
presorting algorithm has equivalent performance for four dimensions and better
performance for three or fewer dimensions.
|
[{'version': 'v1', 'created': 'Mon, 20 Oct 2014 16:08:40 GMT'}
{'version': 'v10', 'created': 'Sun, 30 Nov 2014 02:35:50 GMT'}
{'version': 'v11', 'created': 'Wed, 10 Dec 2014 05:47:22 GMT'}
{'version': 'v12', 'created': 'Sun, 14 Dec 2014 20:11:46 GMT'}
{'version': 'v13', 'created': 'Mon, 29 Dec 2014 15:23:32 GMT'}
{'version': 'v14', 'created': 'Tue, 30 Dec 2014 20:27:00 GMT'}
{'version': 'v15', 'created': 'Fri, 2 Jan 2015 17:49:54 GMT'}
{'version': 'v16', 'created': 'Wed, 7 Jan 2015 16:25:12 GMT'}
{'version': 'v17', 'created': 'Sat, 10 Jan 2015 02:33:07 GMT'}
{'version': 'v18', 'created': 'Tue, 10 Feb 2015 07:07:24 GMT'}
{'version': 'v19', 'created': 'Sun, 15 Feb 2015 15:12:58 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Oct 2014 02:22:55 GMT'}
{'version': 'v20', 'created': 'Thu, 2 Apr 2015 17:16:05 GMT'}
{'version': 'v21', 'created': 'Sun, 5 Apr 2015 14:47:36 GMT'}
{'version': 'v22', 'created': 'Thu, 9 Apr 2015 04:13:16 GMT'}
{'version': 'v23', 'created': 'Sun, 12 Apr 2015 22:07:16 GMT'}
{'version': 'v24', 'created': 'Tue, 14 Apr 2015 19:43:47 GMT'}
{'version': 'v25', 'created': 'Mon, 20 Apr 2015 02:42:12 GMT'}
{'version': 'v26', 'created': 'Tue, 28 Apr 2015 04:20:00 GMT'}
{'version': 'v27', 'created': 'Thu, 7 May 2015 14:07:35 GMT'}
{'version': 'v28', 'created': 'Thu, 13 Feb 2020 04:20:11 GMT'}
{'version': 'v29', 'created': 'Mon, 2 Mar 2020 00:39:21 GMT'}
{'version': 'v3', 'created': 'Thu, 23 Oct 2014 05:05:42 GMT'}
{'version': 'v30', 'created': 'Mon, 22 Nov 2021 04:16:08 GMT'}
{'version': 'v31', 'created': 'Mon, 27 Dec 2021 21:32:22 GMT'}
{'version': 'v32', 'created': 'Fri, 28 Jan 2022 17:29:14 GMT'}
{'version': 'v33', 'created': 'Tue, 1 Mar 2022 19:00:45 GMT'}
{'version': 'v34', 'created': 'Sat, 18 Feb 2023 20:29:58 GMT'}
{'version': 'v35', 'created': 'Mon, 20 Mar 2023 15:53:43 GMT'}
{'version': 'v36', 'created': 'Sun, 23 Apr 2023 18:36:45 GMT'}
{'version': 'v37', 'created': 'Mon, 29 May 2023 01:20:25 GMT'}
{'version': 'v4', 'created': 'Fri, 24 Oct 2014 17:53:47 GMT'}
{'version': 'v5', 'created': 'Mon, 27 Oct 2014 04:50:47 GMT'}
{'version': 'v6', 'created': 'Wed, 29 Oct 2014 14:59:24 GMT'}
{'version': 'v7', 'created': 'Mon, 10 Nov 2014 15:10:01 GMT'}
{'version': 'v8', 'created': 'Mon, 17 Nov 2014 04:46:47 GMT'}
{'version': 'v9', 'created': 'Tue, 25 Nov 2014 20:48:43 GMT'}]
|
2023-05-30
|
[array(['Brown', 'Russell A.', ''], dtype=object)]
|
6,525 |
1102.0407
|
Chiu Fan Lee
|
Chiu Fan Lee
|
Singular perturbation analysis of a reduced model for collective motion:
A renormalization group approach
| null |
Physical Review E 83, 031127 (2011)
|
10.1103/PhysRevE.83.031127
| null |
cond-mat.soft physics.bio-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In a system of noisy self-propelled particles with interactions that favor
directional alignment, collective motion will appear if the density of
particles is beyond a critical density. Starting with a reduced model for
collective motion, we determine how the critical density depends on the form of
the initial perturbation. Specifically, we employ a renormalization-group
improved perturbative method to analyze the model equations, and show
analytically, up to first order in the perturbation parameter, how the critical
density is modified by the strength of the initial angular perturbation in the
system.
|
[{'version': 'v1', 'created': 'Wed, 2 Feb 2011 11:50:54 GMT'}]
|
2011-03-23
|
[array(['Lee', 'Chiu Fan', ''], dtype=object)]
|
6,526 |
2212.12357
|
Sajid Ali
|
Sajid Ali, Dibyendu Bala, Olaf Kaczmarek, Hai-Tao Shu and Tristan
Ueding
|
Study of charm and beauty in QGP from unquenched lattice QCD
| null | null | null | null |
hep-lat
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present charmonium and bottomonium correlators and corresponding
reconstructed spectral functions from full QCD calculations in the pseudoscalar
channel. Correlators are obtained using a mixed-action approach,
clover-improved Wilson valence quarks on gauge field configurations generated
with $N_f=2+1$ HISQ sea quarks, with physical strange quark masses and light
quark masses corresponding to $m_\pi=315$ MeV. The charm and bottom quark
masses are tuned to reproduce the experimental mass spectrum of the spin
averaged quarkonium vector mesons from the particle data group. For the
spectral reconstruction, we use models based on perturbative spectral functions
from different frequency regions like resummed thermal contributions around the
threshold from pNRQCD and vacuum contributions well above the threshold. We
show preliminary results of the reconstructed spectral function obtained for
the first time in our study for full QCD.
|
[{'version': 'v1', 'created': 'Fri, 23 Dec 2022 14:19:54 GMT'}]
|
2022-12-26
|
[array(['Ali', 'Sajid', ''], dtype=object)
array(['Bala', 'Dibyendu', ''], dtype=object)
array(['Kaczmarek', 'Olaf', ''], dtype=object)
array(['Shu', 'Hai-Tao', ''], dtype=object)
array(['Ueding', 'Tristan', ''], dtype=object)]
|
6,527 |
nucl-th/0409077
|
Chao-Hsi Chang
|
Chao-Hsi Chang and Jiao-Kai Chen
|
The Instantaneous Bethe-Salpeter Equation and Its Analog: the Breit-like
Equation
|
5 pages, no figure
|
Commun.Theor.Phys.44:646-650,2005
|
10.1088/6102/44/4/646
| null |
nucl-th
| null |
We take ($\mu^\pm e^\mp$) systems and consider the states with quantum number
$J^P=0^-$ as examples, to explore the different contents of the instantaneous
Bethe-Salpeter (BS) equation and its analog, Breit equation, by solving them
exactly. The results show that the two equations are not equivalent, although
they are analogous. Furthermore, we point out that the Breit equation contains
extra un-physical solutions, so it should be abandoned if one wishes to have an
accurate description of the bound states for the instantaneous interacting
binding systems.
|
[{'version': 'v1', 'created': 'Thu, 30 Sep 2004 14:41:47 GMT'}
{'version': 'v2', 'created': 'Fri, 1 Oct 2004 02:08:31 GMT'}]
|
2014-11-18
|
[array(['Chang', 'Chao-Hsi', ''], dtype=object)
array(['Chen', 'Jiao-Kai', ''], dtype=object)]
|
6,528 |
1911.00192
|
Xun Shen
|
Xun Shen, Jiancang Zhuang and Xingguo Zhang
|
Parallel Randomized Algorithm for Chance Constrained Program
| null | null | null | null |
math.OC stat.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Chance constrained program is computationally intractable due to the
existence of chance constraints, which are randomly disturbed and should be
satisfied with a probability. This paper proposes a two-layer randomized
algorithm to address chance constrained program. Randomized optimization is
applied to search the optimizer which satisfies chance constraints in a
framework of parallel algorithm. Firstly, multiple decision samples are
extracted uniformly in the decision domain without considering the chance
constraints. Then, in the second sampling layer, violation probabilities of all
the extracted decision samples are checked by extracting the disturbance
samples and calculating the corresponding violation probabilities. The decision
samples with violation probabilities higher than the required level are
discarded. The minimizer of the cost function among the remained feasible
decision samples are used to update optimizer iteratively. Numerical
simulations are implemented to validate the proposed method for non-convex
problems comparing with scenario approach. The proposed method exhibits better
robustness in finding probabilistic feasible optimizer.
|
[{'version': 'v1', 'created': 'Fri, 1 Nov 2019 03:24:29 GMT'}
{'version': 'v2', 'created': 'Mon, 4 Nov 2019 02:02:20 GMT'}
{'version': 'v3', 'created': 'Thu, 7 Nov 2019 00:56:03 GMT'}]
|
2019-11-11
|
[array(['Shen', 'Xun', ''], dtype=object)
array(['Zhuang', 'Jiancang', ''], dtype=object)
array(['Zhang', 'Xingguo', ''], dtype=object)]
|
6,529 |
0710.3784
|
Carlos Gershenson
|
Carlos Gershenson and Tom Lenaerts
|
Evolution of Complexity
|
Introduction to Special Issue
|
Artificial Life 14(3): 241-243. 2008
|
10.1162/artl.2008.14.3.14300
| null |
q-bio.PE
| null |
The evolution of complexity has been a central theme for Biology [2] and
Artificial Life research [1]. It is generally agreed that complexity has
increased in our universe, giving way to life, multi-cellularity, societies,
and systems of higher complexities. However, the mechanisms behind the
complexification and its relation to evolution are not well understood.
Moreover complexification can be used to mean different things in different
contexts. For example, complexification has been interpreted as a process of
diversification between evolving units [2] or as a scaling process related to
the idea of transitions between different levels of complexity [7].
Understanding the difference or overlap between the mechanisms involved in both
situations is mandatory to create acceptable synthetic models of the process,
as is required in Artificial Life research. (...)
|
[{'version': 'v1', 'created': 'Fri, 19 Oct 2007 20:46:09 GMT'}]
|
2011-09-06
|
[array(['Gershenson', 'Carlos', ''], dtype=object)
array(['Lenaerts', 'Tom', ''], dtype=object)]
|
6,530 |
astro-ph/9802204
|
Heidi Jo Newberg
|
Heidi Jo Newberg and Brian Yanny
|
An Absence of Gaps in the Main Sequence Population of Field Stars
|
8 pages, 4 figures, Ap J Lett (accepted)
|
Astrophys.J. 499 (1998) L57
|
10.1086/311336
|
Fermilab-Pub-97-403-A
|
astro-ph
| null |
Using high precision parallaxes from the Hipparcos catalog, we construct H-R
diagrams for two samples of bright stars. The first is a magnitude-limited
sample that is over 90% complete and uses uniform photometry from the Catalog
of WBVR Magnitudes of Northern Sky Bright Stars (declination above -14 deg).
This sample shows a smooth distribution of stars along the main sequence, with
no detectable gaps. The second contains all of the stars closer than 100
parsecs in the Hipparcos catalog with declination less than -12 deg. Uniform
spectroscopy from the Michigan Spectral Survey shows that some stars which
appear on the main sequence in the H-R diagram, particularly those in the 0.2 <
B-V < 0.3 region that has been labeled the Bohm-Vitense gap, are classified as
giants by the MK system of spectral classification. Other gaps that have been
identified in the main sequence are also affected by such classification
criteria. This analysis casts doubt on the existence of the Bohm-Vitense gap,
which is thought to result from the sudden onset of convection in stars. The
standard identification of main sequence stars with luminosity class V, and
giants with luminosity class III, must be reconsidered for some spectral types.
The true nature of the stars that lie on the main sequence in the H-R diagram,
but which do not have luminosity class V designations, remains to be
investigated.
|
[{'version': 'v1', 'created': 'Sat, 14 Feb 1998 15:19:37 GMT'}]
|
2009-10-30
|
[array(['Newberg', 'Heidi Jo', ''], dtype=object)
array(['Yanny', 'Brian', ''], dtype=object)]
|
6,531 |
1508.07878
|
Steve Desch
|
Steven J. Desch and Neal J. Turner
|
High-Temperature Ionization in Protoplanetary Disks
|
68 pages, 20 figures
| null |
10.1088/0004-637X/811/2/156
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We calculate the abundances of electrons and ions in the hot (> 500 K), dusty
parts of protoplanetary disks, treating for the first time the effects of
thermionic and ion emission from the dust grains. High-temperature ionization
modeling has involved simply assuming that alkali elements such as potassium
occur as gas-phase atoms and are collisionally ionized following the Saha
equation. We show that the Saha equation often does not hold, because free
charges are produced by thermionic and ion emission and destroyed when they
stick to grain surfaces. This means the ionization state depends not on the
first ionization potential of the alkali atoms, but rather on the grains' work
functions. The charged species' abundances typically rise abruptly above about
800 K, with little qualitative dependence on the work function, gas density, or
dust-to-gas mass ratio. Applying our results, we find that protoplanetary
disks' dead zone, where high diffusivities stifle magnetorotational turbulence,
has its inner edge located where the temperature exceeds a threshold value
~1000 K. The threshold is set by ambipolar diffusion except at the highest
densities, where it is set by Ohmic resistivity. We find that the disk gas can
be diffusively loaded onto the stellar magnetosphere at temperatures below a
similar threshold. We investigate whether the "short-circuit" instability of
current sheets can operate in disks and find that it cannot, or works only in a
narrow range of conditions; it appears not to be the chondrule formation
mechanism. We also suggest that thermionic emission is important for
determining the rate of Ohmic heating in hot Jupiters.
|
[{'version': 'v1', 'created': 'Mon, 31 Aug 2015 15:44:32 GMT'}]
|
2015-10-14
|
[array(['Desch', 'Steven J.', ''], dtype=object)
array(['Turner', 'Neal J.', ''], dtype=object)]
|
6,532 |
2111.08367
|
Menno Demmenie
|
Menno Demmenie, Paul Kolpakov, Yuki Nagata, Sander Woutersen, Daniel
Bonn
|
Self-Healing Behavior of Ice
|
9 pages, 5 figures
| null | null | null |
physics.chem-ph cond-mat.soft
|
http://creativecommons.org/licenses/by/4.0/
|
We show that the surface of ice is self-healing: micrometer deep scratches in
the ice surface spontaneously disappear by relaxation on a time scale of
roughly an hour. Following the dynamics and comparing it to different mass
transfer mechanisms, we find that sublimation from and condensation onto the
ice surface is the dominant self-healing mechanism. The self-healing kinetics
shows a strong temperature dependence, following an Arrhenius behavior with an
activation energy of $\Delta E = 58.6 \pm 4.6$ kJ/mole, agreeing with the
proposed sublimation mechanism, and at odds with surface diffusion or fluid
flow or evaporation-condensation from a quasi-liquid layer.
|
[{'version': 'v1', 'created': 'Tue, 16 Nov 2021 11:12:36 GMT'}]
|
2021-11-17
|
[array(['Demmenie', 'Menno', ''], dtype=object)
array(['Kolpakov', 'Paul', ''], dtype=object)
array(['Nagata', 'Yuki', ''], dtype=object)
array(['Woutersen', 'Sander', ''], dtype=object)
array(['Bonn', 'Daniel', ''], dtype=object)]
|
6,533 |
1312.4366
|
Tatsuya Kubokawa
|
Tatsuya Kubokawa, William E. Strawderman
|
Dominance properties of constrained Bayes and empirical Bayes estimators
|
Published in at http://dx.doi.org/10.3150/12-BEJ449 the Bernoulli
(http://isi.cbs.nl/bernoulli/) by the International Statistical
Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
|
Bernoulli 2013, Vol. 19, No. 5B, 2200-2221
|
10.3150/12-BEJ449
|
IMS-BEJ-BEJ449
|
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper studies decision theoretic properties of benchmarked estimators
which are of some importance in small area estimation problems. Benchmarking is
intended to improve certain aggregate properties (such as study-wide averages)
when model based estimates have been applied to individual small areas. We
study decision-theoretic properties of such estimators by reducing the problem
to one of studying these problems in a related derived problem. For certain
such problems, we show that unconstrained solutions in the original
(unbenchmarked) problem give unconstrained Bayes and improved estimators which
automatically satisfy the benchmark constraint. Also, dominance properties of
constrained empirical Bayes estimators are shown in the Fay-Herriot model, a
frequently used model in small area estimation.
|
[{'version': 'v1', 'created': 'Mon, 16 Dec 2013 14:07:22 GMT'}]
|
2013-12-17
|
[array(['Kubokawa', 'Tatsuya', ''], dtype=object)
array(['Strawderman', 'William E.', ''], dtype=object)]
|
6,534 |
2004.14775
|
Milad Hajebrahimi
|
Kourosh Nozari and Milad Hajebrahimi
|
Geodesic Structure of the Quantum-Corrected Schwarzschild Black Hole
Surrounded by Quintessence
|
42 pages, 24 figures
|
Int. J. Geom. Methods Mod. Phys (2022) 2250177
|
10.1142/S0219887822501778
| null |
gr-qc hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
By considering the back-reaction of the spacetime through the spherically
symmetric quantum fluctuations of the background metric, Kazakov and Solodukhin
removed the singularity of the Schwarzschild black hole. This regular
Schwarzschild black hole has a spherical central region with a radius of the
order of the Planck length. On the other hand, due to the positively
accelerating expansion of the Universe, it seems that there exists a universal
repulsive force known as dark energy. In the framework of quantum field
theories, the quintessence field is a candidate model for investigating and
modeling dark energy. Accordingly, by taking into account the quintessential
matter field in the background of the Schwarzschild black hole, Kiselev gained
the metric of this black hole surrounded by quintessence. By combining these
two above ideas, in the present study we consider the quantum-corrected
Schwarzschild black hole surrounded by quintessence to investigate null and
time-like geodesics structure. Generally, this study points out that black
holes are quantum-gravitational objects. We will show that the accelerated
expansion of the Universe, instead of dark energy, happens because of the
presence of quantum effects in this setup. Also, due to the presence of the
central Planck-size sphere, the regular black hole has been possessed a
shifting over radial coordinate in its inner structure.
|
[{'version': 'v1', 'created': 'Sat, 25 Apr 2020 06:07:10 GMT'}]
|
2022-07-21
|
[array(['Nozari', 'Kourosh', ''], dtype=object)
array(['Hajebrahimi', 'Milad', ''], dtype=object)]
|
6,535 |
1903.06517
|
Noah Kurinsky
|
Ziqing Hong, Runze Ren, Noah Kurinsky, Enectali Figueroa-Feliciano,
Lise Wills, Suhas Ganjam, Rupak Mahapatra, Nader Mirabolfathi, Brian
Nebolsky, H. Douglas Pinckney, and Mark Platt
|
Single Electron-Hole Pair Sensitive Silicon Detector with Surface Event
Rejection
|
7 pages, 4 figures, Accepted to NIM A
| null |
10.1016/j.nima.2020.163757
|
FERMILAB-PUB-19-097-AE-E
|
physics.ins-det astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We demonstrate single electron-hole pair resolution in a single-sided,
contact-free 1 cm$^2$ by 1 mm thick Si crystal operated at 48 mK, with a
baseline energy resolution of 3 eV. This crystal can be operated at voltages in
excess of $\pm50$ V, resulting in a measured charge resolution of 0.06
electron-hole pairs. The high aluminum coverage ($\sim$70%) of this device
allows for the discrimination of surface events and separation of events
occurring near the center of the detector from those near the edge. We use this
discrimination ability to show that non-quantized dark events seen in previous
detectors of a similar design are likely dominated by charge leakage along the
side wall of the device.
|
[{'version': 'v1', 'created': 'Fri, 15 Mar 2019 13:11:34 GMT'}
{'version': 'v2', 'created': 'Fri, 28 Feb 2020 00:18:24 GMT'}]
|
2020-03-09
|
[array(['Hong', 'Ziqing', ''], dtype=object)
array(['Ren', 'Runze', ''], dtype=object)
array(['Kurinsky', 'Noah', ''], dtype=object)
array(['Figueroa-Feliciano', 'Enectali', ''], dtype=object)
array(['Wills', 'Lise', ''], dtype=object)
array(['Ganjam', 'Suhas', ''], dtype=object)
array(['Mahapatra', 'Rupak', ''], dtype=object)
array(['Mirabolfathi', 'Nader', ''], dtype=object)
array(['Nebolsky', 'Brian', ''], dtype=object)
array(['Pinckney', 'H. Douglas', ''], dtype=object)
array(['Platt', 'Mark', ''], dtype=object)]
|
6,536 |
nucl-th/0202036
|
Boris A. Gelman
|
Thomas D. Cohen and Boris A. Gelman
|
Nucleon-Nucleon Scattering Observables in Large-$N_c$ QCD
|
4 pages
|
Phys.Lett. B540 (2002) 227-232
|
10.1016/S0370-2693(02)02182-2
|
DOE/ER/40762-249, UMD-PP# 02-033
|
nucl-th hep-ex hep-ph nucl-ex
| null |
Nucleon-nucleon scattering observables are considered in the context of the
large $N_c$ limit of QCD for initial states with moderately high momenta ($p
\sim N_c$). The scattering is studied in the framework of the time-dependent
mean-field approximation. We focus on the dependence of those observables on
the spin and isospin of the initial state which may be computed using
time-dependent mean-field theory. We show that, up to corrections, all such
observables must be invariant under simultaneous spin and isospin flips ({\it
i.e.} rotations through $\pi/2$ in both spin and isospin) acting on either
particle. All observables of this class obtained from spin unpolarized
measurements must be isospin independent up to $1/N_c$ corrections. Moreover,
it can be shown that the leading correction is of relative order $1/N_c^2$
rather than $1/N_c$.
|
[{'version': 'v1', 'created': 'Mon, 11 Feb 2002 16:18:01 GMT'}]
|
2009-11-07
|
[array(['Cohen', 'Thomas D.', ''], dtype=object)
array(['Gelman', 'Boris A.', ''], dtype=object)]
|
6,537 |
0803.0662
|
Bakmaev Sabir
|
E. A. Kuraev, S. Bakmaev, Yu. M. Bystritskiy, T. V. Shishkina, O. P.
Solovtsova
|
Radiative corrections to the cross section of $e^-+p\to \nu+n$ and the
crossed processes
|
11 pages, 1 figure
| null |
10.1134/S0021364008070047
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Born cross section and the radiative corrections to its lowest order are
considered in the frame work of QED with structureless nucleons including the
emission of virtual and real photons. Result is generalized to take into
account radiative corrections in higher orders of perturbation theory in the
leading and next-to leading logarithmic approximation. Crossing processes are
considered in the leading approximation.
|
[{'version': 'v1', 'created': 'Wed, 5 Mar 2008 13:56:30 GMT'}]
|
2009-11-13
|
[array(['Kuraev', 'E. A.', ''], dtype=object)
array(['Bakmaev', 'S.', ''], dtype=object)
array(['Bystritskiy', 'Yu. M.', ''], dtype=object)
array(['Shishkina', 'T. V.', ''], dtype=object)
array(['Solovtsova', 'O. P.', ''], dtype=object)]
|
6,538 |
1410.2108
|
Vali Huseynov
|
Vali A. Huseynov
|
Prediction of existence of neutral boson with spin 2 in energy (mass)
range from zero to 160.77 GeV
|
This work has been presented as a poster at the Second Annual
Conference on Large Hadron Collider Physics (Columbia University, New York,
USA, June 2-7, 2014). arXiv admin note: substantial text overlap with
arXiv:1410.1564
| null | null | null |
physics.gen-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the decay of an arbitrary neutral boson into a pair of
on-shell W-bosons in a magnetic field. The possible existence of the new
neutral bosons with the spins 0, 2, 3 and with the charge conjugation C=+1 in
the energy (mass) range from zero to 160.77 GeV is predicted. The analyses show
that the existence of the neutral boson with the spin 2 in the energy (mass)
range from zero to 160.77 GeV is more promising and realistic.
|
[{'version': 'v1', 'created': 'Fri, 12 Sep 2014 16:47:11 GMT'}]
|
2014-10-09
|
[array(['Huseynov', 'Vali A.', ''], dtype=object)]
|
6,539 |
hep-th/9704027
|
Ivo Sachs
|
M. Magro, L. O'Raifeartaigh, I. Sachs (Dublin Institute for Advanced
Studies)
|
On the Uniqueness of the effective Lagrangian for N= 2 SQCD
|
16 pages, LaTeX, 2 figures, title changed, sections on central charge
and superconformal anomaly extended
|
Nucl.Phys. B508 (1997) 433-448
|
10.1016/S0550-3213(97)00626-3
|
DIAS-STP/97-06
|
hep-th
| null |
The low energy effective Lagrangian for N= 2 SU(2) supersymmetric Yang-Mills
theory coupled to N_F<4 massless matter fields is derived from the BPS mass
formula using asymptotic freedom and assuming that the number of strong
coupling singularities is finite.
|
[{'version': 'v1', 'created': 'Thu, 3 Apr 1997 17:19:19 GMT'}
{'version': 'v2', 'created': 'Thu, 16 Oct 1997 23:03:00 GMT'}]
|
2009-10-30
|
[array(['Magro', 'M.', '', 'Dublin Institute for Advanced\n Studies'],
dtype=object)
array(["O'Raifeartaigh", 'L.', '',
'Dublin Institute for Advanced\n Studies'], dtype=object)
array(['Sachs', 'I.', '', 'Dublin Institute for Advanced\n Studies'],
dtype=object) ]
|
6,540 |
2305.13783
|
Guoming Huang
|
Guoming Huang, Xiaofang Yuan, Zhixian Liu, Weihua Tan, Xiru Wu, Yaonan
Wang
|
Deep Reinforcement Learning-based Multi-objective Path Planning on the
Off-road Terrain Environment for Ground Vehicles
| null | null | null | null |
cs.RO cs.AI
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Due to the energy-consumption efficiency between up-slope and down-slope is
hugely different, a path with the shortest length on a complex off-road terrain
environment (2.5D map) is not always the path with the least energy
consumption. For any energy-sensitive vehicles, realizing a good trade-off
between distance and energy consumption on 2.5D path planning is significantly
meaningful. In this paper, a deep reinforcement learning-based 2.5D
multi-objective path planning method (DMOP) is proposed. The DMOP can
efficiently find the desired path with three steps: (1) Transform the
high-resolution 2.5D map into a small-size map. (2) Use a trained deep Q
network (DQN) to find the desired path on the small-size map. (3) Build the
planned path to the original high-resolution map using a path enhanced method.
In addition, the imitation learning method and reward shaping theory are
applied to train the DQN. The reward function is constructed with the
information of terrain, distance, border. Simulation shows that the proposed
method can finish the multi-objective 2.5D path planning task. Also, simulation
proves that the method has powerful reasoning capability that enables it to
perform arbitrary untrained planning tasks on the same map.
|
[{'version': 'v1', 'created': 'Tue, 23 May 2023 07:53:35 GMT'}]
|
2023-05-24
|
[array(['Huang', 'Guoming', ''], dtype=object)
array(['Yuan', 'Xiaofang', ''], dtype=object)
array(['Liu', 'Zhixian', ''], dtype=object)
array(['Tan', 'Weihua', ''], dtype=object)
array(['Wu', 'Xiru', ''], dtype=object)
array(['Wang', 'Yaonan', ''], dtype=object)]
|
6,541 |
hep-ph/0212141
|
Nobuhiro Maekawa
|
Nobuhiro Maekawa
|
Non-Abelian Horizontal Symmetry and Anomalous U(1) Symmetry for the
Supersymmetric Flavor Problem
|
ReVTeX, 4 pages, Ver3:Proofread, Typos corrected, Refs. added
|
Phys.Lett. B561 (2003) 273-278
|
10.1016/S0370-2693(03)00485-4
|
KUNS-1816
|
hep-ph
| null |
It is shown that using non-abelian horizontal gauge symmetry and anomalous
U(1)_A symmetry in grand unified theories (GUTs), realistic quark and lepton
mass matrices including large neutrino mixings can be obtained, while the
differences among the scalar fermion masses are sufficiently small for
suppression of various flavor changing neutral current (FCNC) processes,
especially in E_6 GUT. Combining the Higgs sector, in which doublet-triplet
splitting is realized, a complete E_6\times SU(3)_H GUT, in which three
generations are unified into a single multiplet, Psi(27,3), is obtained.
|
[{'version': 'v1', 'created': 'Tue, 10 Dec 2002 13:38:35 GMT'}
{'version': 'v2', 'created': 'Sun, 15 Dec 2002 09:48:27 GMT'}
{'version': 'v3', 'created': 'Thu, 26 Dec 2002 04:40:22 GMT'}]
|
2009-11-07
|
[array(['Maekawa', 'Nobuhiro', ''], dtype=object)]
|
6,542 |
1310.1266
|
Giulio Coluccia
|
Giulio Coluccia, Simeon Kamden-Kuiteng, Andrea Abrardo, Mauro Barni,
Enrico Magli
|
Progressive Compressed Sensing and Reconstruction of Multidimensional
Signals Using Hybrid Transform/Prediction Sparsity Model
| null |
IEEE Journal on Emerging and Selected Topics in Circuits and
Systems, vol.2, no.3, pp.340,352, Sept. 2012
|
10.1109/JETCAS.2012.2214891
| null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Compressed sensing (CS) is an innovative technique allowing to represent
signals through a small number of their linear projections. Hence, CS can be
thought of as a natural candidate for acquisition of multidimensional signals,
as the amount of data acquired and processed by conventional sensors could
create problems in terms of computational complexity. In this paper, we propose
a framework for the acquisition and reconstruction of multidimensional
correlated signals. The approach is general and can be applied to D dimensional
signals, even if the algorithms we propose to practically implement such
architectures apply to 2-D and 3-D signals. The proposed architectures employ
iterative local signal reconstruction based on a hybrid transform/prediction
correlation model, coupled with a proper initialization strategy.
|
[{'version': 'v1', 'created': 'Fri, 4 Oct 2013 13:43:53 GMT'}]
|
2014-03-06
|
[array(['Coluccia', 'Giulio', ''], dtype=object)
array(['Kamden-Kuiteng', 'Simeon', ''], dtype=object)
array(['Abrardo', 'Andrea', ''], dtype=object)
array(['Barni', 'Mauro', ''], dtype=object)
array(['Magli', 'Enrico', ''], dtype=object)]
|
6,543 |
hep-ph/9512387
|
Takeshi Kurimoto
|
T. Kurimoto, A. Tomita and S. Wakaizumi
|
$W_R$ effects on $CP$ angles determination at a $B$ factory
|
13 pages, LaTeX with epsfig.sty for figures, 5 PS figures in
tar+gzip+uuencoded format full PS file with text and figures available on
http://k2.sci.toyama-u.ac.jp/b-phys/
|
Phys.Lett. B381 (1996) 470-478
|
10.1016/0370-2693(96)00600-4
|
OU-HET 228, TOYAMA - 86, UT-DP-95-01
|
hep-ph
| null |
The right-handed charged current gauge boson $W_R$ can affect significantly
on the determination of the $CP$ violation angles to be measured at $B$
factories if the right-handed current quark mixing matrix $V^R$ is taken to a
specific form to satisfy the bounds by neutral $K$ meson systems. The $W_R$
contribution can be sizable in $B^0$-$\overline{B^0}$ mixing and tree level $b$
quark decay. The deviation of $CP$ angles in unitarity triangle from the
standard model values can be as large as $-37^\circ$ or $ +22^\circ$ for
$\phi_3$ ($\gamma$), and $66^\circ \sim 115^\circ$ for $\phi_1$ ($\beta$) and
$\phi_2$ ($\alpha$).
|
[{'version': 'v1', 'created': 'Thu, 21 Dec 1995 04:07:03 GMT'}]
|
2009-10-28
|
[array(['Kurimoto', 'T.', ''], dtype=object)
array(['Tomita', 'A.', ''], dtype=object)
array(['Wakaizumi', 'S.', ''], dtype=object)]
|
6,544 |
2008.09655
|
Elizaveta Logacheva
|
Elizaveta Logacheva, Roman Suvorov, Oleg Khomenko, Anton Mashikhin and
Victor Lempitsky
|
DeepLandscape: Adversarial Modeling of Landscape Video
|
Accepted at ECCV 2020
| null | null | null |
cs.CV cs.GR cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We build a new model of landscape videos that can be trained on a mixture of
static landscape images as well as landscape animations. Our architecture
extends StyleGAN model by augmenting it with parts that allow to model dynamic
changes in a scene. Once trained, our model can be used to generate realistic
time-lapse landscape videos with moving objects and time-of-the-day changes.
Furthermore, by fitting the learned models to a static landscape image, the
latter can be reenacted in a realistic way. We propose simple but necessary
modifications to StyleGAN inversion procedure, which lead to in-domain latent
codes and allow to manipulate real images. Quantitative comparisons and user
studies suggest that our model produces more compelling animations of given
photographs than previously proposed methods. The results of our approach
including comparisons with prior art can be seen in supplementary materials and
on the project page https://saic-mdal.github.io/deep-landscape
|
[{'version': 'v1', 'created': 'Fri, 21 Aug 2020 19:14:19 GMT'}]
|
2020-08-25
|
[array(['Logacheva', 'Elizaveta', ''], dtype=object)
array(['Suvorov', 'Roman', ''], dtype=object)
array(['Khomenko', 'Oleg', ''], dtype=object)
array(['Mashikhin', 'Anton', ''], dtype=object)
array(['Lempitsky', 'Victor', ''], dtype=object)]
|
6,545 |
2306.00691
|
Mathieu Padlewski
|
Mathieu Padlewski, Maxime Volery, Romain Fleury, Herv\'e Lissek and
Xinxin Guo
|
Active Su-Schrieffer-Heeger-like System
|
9 pages, 9 figures
| null | null | null |
physics.app-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An acoustic dimer composed of two electronically controlled electro-acoustic
resonators is presented in view of exploring one-dimensional topological
phenomena.
|
[{'version': 'v1', 'created': 'Thu, 1 Jun 2023 14:01:56 GMT'}]
|
2023-06-02
|
[array(['Padlewski', 'Mathieu', ''], dtype=object)
array(['Volery', 'Maxime', ''], dtype=object)
array(['Fleury', 'Romain', ''], dtype=object)
array(['Lissek', 'Hervé', ''], dtype=object)
array(['Guo', 'Xinxin', ''], dtype=object)]
|
6,546 |
cond-mat/0304396
|
Diezemann
|
Gregor Diezemann
|
Dynamic heterogeneities in the out-of-equilibrium dynamics of simple
spherical spin models
|
16 pages, 8 figures
| null |
10.1103/PhysRevE.68.021105
| null |
cond-mat
| null |
The response of spherical two-spin interaction models, the spherical
ferromagnet (s-FM) and the spherical Sherrington-Kirkpatrick (s-SK) model, is
calculated for the protocol of the so-called nonresonant hole burning
experiment (NHB) for temperatures below the respective critical temperatures.
It is shown that it is possible to select dynamic features in the
out-of-equilibrium dynamics of both models, one of the hallmarks of dynamic
heterogeneities. The behavior of the s-SK model and the s-FM in three
dimensions is very similar, showing dynamic heterogeneities in the long time
behavior, i.e. in the aging regime. The appearence of dynamic heterogeneities
in the s-SK model explicitly demonstrates that these are not necessarily
related to {\it spatial} heterogeneities. For the s-FM it is shown that the
nature of the dynamic heterogeneities changes as a function of dimensionality.
With incresing dimension the frequency selectivity of the NHB diminishes and
the dynamics in the mean-field limit of the s-FM model becomes homogeneous.
|
[{'version': 'v1', 'created': 'Thu, 17 Apr 2003 12:46:54 GMT'}
{'version': 'v2', 'created': 'Mon, 4 Aug 2003 16:02:00 GMT'}]
|
2009-11-10
|
[array(['Diezemann', 'Gregor', ''], dtype=object)]
|
6,547 |
quant-ph/0601135
|
Atushi Tanaka
|
Atushi Tanaka (Tokyo Metropolitan University)
|
Determination of the border between "shallow" and "deep" tunneling
regions for Herman-Kluk method by asymptotic approach
|
To be published in Phys. Rev. A
|
Phys. Rev. A 73, 024101 (2006) (4 pages)
|
10.1103/PhysRevA.73.024101
| null |
quant-ph
| null |
The evaluation of a tunneling tail by the Herman-Kluk method, which is a
quasiclassical way to compute quantum dynamics, is examined by asymptotic
analysis. In the shallower part of the tail, as well as in the classically
allowed region, it is shown that the leading terms of semiclassical evaluations
of quantum theory and the Herman-Kluk formula agree, which is known as an
asymptotic equivalence. In the deeper part, it is shown that the asymptotic
equivalence breaks down, due to the emergence of unusual "tunneling
trajectory", which is an artifact of the Herman-Kluk method.
|
[{'version': 'v1', 'created': 'Fri, 20 Jan 2006 02:31:24 GMT'}]
|
2007-05-23
|
[array(['Tanaka', 'Atushi', '', 'Tokyo Metropolitan University'],
dtype=object) ]
|
6,548 |
1312.3904
|
Elena Khramtcova
|
Panagiotis Cheilaris, Elena Khramtcova, Stefan Langerman, Evanthia
Papadopoulou
|
A Randomized Incremental Algorithm for the Hausdorff Voronoi Diagram of
Non-crossing Clusters
|
arXiv admin note: substantial text overlap with arXiv:1306.5838
| null | null | null |
cs.CG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the Hausdorff Voronoi diagram of a family of \emph{clusters of points} in
the plane, the distance between a point $t$ and a cluster $P$ is measured as
the maximum distance between $t$ and any point in $P$, and the diagram is
defined in a nearest-neighbor sense for the input clusters. In this paper we
consider %El."non-crossing" \emph{non-crossing} clusters in the plane, for
which the combinatorial complexity of the Hausdorff Voronoi diagram is linear
in the total number of points, $n$, on the convex hulls of all clusters. We
present a randomized incremental construction, based on point location, that
computes this diagram in expected $O(n\log^2{n})$ time and expected $O(n)$
space. Our techniques efficiently handle non-standard characteristics of
generalized Voronoi diagrams, such as sites of non-constant complexity, sites
that are not enclosed in their Voronoi regions, and empty Voronoi regions. The
diagram finds direct applications in VLSI computer-aided design.
|
[{'version': 'v1', 'created': 'Fri, 13 Dec 2013 18:57:58 GMT'}
{'version': 'v2', 'created': 'Sat, 30 Jan 2016 10:06:36 GMT'}
{'version': 'v3', 'created': 'Sat, 5 Mar 2016 14:57:23 GMT'}]
|
2016-03-08
|
[array(['Cheilaris', 'Panagiotis', ''], dtype=object)
array(['Khramtcova', 'Elena', ''], dtype=object)
array(['Langerman', 'Stefan', ''], dtype=object)
array(['Papadopoulou', 'Evanthia', ''], dtype=object)]
|
6,549 |
1006.1804
|
Douglas H. Bradshaw PhD
|
Douglas H. Bradshaw, Michael D. Di Rosa
|
Vacuum field energy and spontaneous emission in anomalously dispersive
cavities
|
9 pages, 4 figures
| null |
10.1103/PhysRevA.83.053816
|
from LA-UR 09-06134
|
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Anomalously dispersive cavities, particularly white light cavities, may have
larger bandwidth to finesse ratios than their normally dispersive counterparts.
Partly for this reason, their use has been proposed for use in LIGO-like
gravity wave detectors and in ring-laser gyroscopes. In this paper we analyze
the quantum noise associated with anomalously dispersive cavity modes. The
vacuum field energy associated with a particular cavity mode is proportional to
the cavity-averaged group velocity of that mode. For anomalously dispersive
cavities with group index values between 1 and 0, this means that the total
vacuum field energy associated with a particular cavity mode must exceed $\hbar
\omega/2$. For white light cavities in particular, the group index approaches
zero and the vacuum field energy of a particular spatial mode may be
significantly enhanced. We predict enhanced spontaneous emission rates into
anomalously dispersive cavity modes and broadened laser linewidths when the
linewidth of intracavity emitters is broader than the cavity linewidth.
|
[{'version': 'v1', 'created': 'Wed, 9 Jun 2010 14:06:50 GMT'}
{'version': 'v2', 'created': 'Sat, 4 Dec 2010 22:38:24 GMT'}]
|
2013-05-29
|
[array(['Bradshaw', 'Douglas H.', ''], dtype=object)
array(['Di Rosa', 'Michael D.', ''], dtype=object)]
|
6,550 |
1412.7451
|
Wei Pan
|
W. Pan, K.W. Baldwin, K.W. West, L.N. Pfeiffer, and D.C. Tsui
|
Fractional Quantum Hall Effect at Landau Level Filling nu=4/11
| null |
Phys. Rev. B 91, 041301 (2015)
|
10.1103/PhysRevB.91.041301
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report low temperature electronic transport results on the fractional
quantum Hall effect of composite fermions at Landau level filling nu = 4/11 in
a very high mobility and low density sample. Measurements were carried out at
temperatures down to 15mK, where an activated magnetoresistance Rxx and a
quantized Hall resistance Rxy, within 1% of the expected value of h/(4/11)e^2,
were observed. The temperature dependence of the Rxx minimum at 4/11 yields an
activation energy gap of ~ 7 mK. Developing Hall plateaus were also observed at
the neighboring states at nu = 3/8 and 5/13.
|
[{'version': 'v1', 'created': 'Tue, 23 Dec 2014 17:22:59 GMT'}
{'version': 'v2', 'created': 'Fri, 2 Jan 2015 18:12:44 GMT'}]
|
2015-01-14
|
[array(['Pan', 'W.', ''], dtype=object)
array(['Baldwin', 'K. W.', ''], dtype=object)
array(['West', 'K. W.', ''], dtype=object)
array(['Pfeiffer', 'L. N.', ''], dtype=object)
array(['Tsui', 'D. C.', ''], dtype=object)]
|
6,551 |
1301.7518
|
Shigeo Ohkubo
|
Sh. Hamada, Y. Hirabayashi, N. Burtebayev, and S. Ohkubo
|
Observation of Airy minimum in elastic and inelastic scattering of
$^3$He from $^{12}$C at 50.5 and 60 MeV and alpha particle condensation in
$^{12}$C
|
5 pages, 6 figures
| null |
10.1103/PhysRevC.87.024311
| null |
nucl-th nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Angular distributions for elastic and inelastic scattering of $^3$He from
$^{12}$C were measured at energies 50.5 and 60 MeV. The Airy minimum of the
prerainbow scattering was clearly observed in the angular distributions for the
0$_2^+$ (7.65 MeV) state of $^{12}$C (Hoyle state). The experimental results
were analyzed with a coupled channels method with double folding potentials
derived from the microscopic wave functions for the ground 0$_1^+$, 2$^+$ (4.44
MeV), 3$^-$ (9.64 MeV) and 0$_2^+$ states. The analysis supports the view that
the Hoyle state is a three alpha particle condensate with a large radius of
dilute matter distribution.
|
[{'version': 'v1', 'created': 'Thu, 31 Jan 2013 05:33:53 GMT'}]
|
2015-06-12
|
[array(['Hamada', 'Sh.', ''], dtype=object)
array(['Hirabayashi', 'Y.', ''], dtype=object)
array(['Burtebayev', 'N.', ''], dtype=object)
array(['Ohkubo', 'S.', ''], dtype=object)]
|
6,552 |
hep-ph/0008257
|
Miroslav Pardy
|
Miroslav Pardy (Masaryk University, Brno, Czech Republic)
|
Synchrotron Production of Photons by a Two-body System
| null |
Int.J.Theor.Phys. 39 (2000) 1109-1118
| null | null |
hep-ph
| null |
The power spectrum of the synchrotron radiation generated by the motion of a
two-body charged system in an accelerator is derived in the framework of the
Schwinger source theory. The final formula can be used to verify the Lorentz
length contraction of the two-body system moving in the synchrotron.
|
[{'version': 'v1', 'created': 'Thu, 24 Aug 2000 12:38:05 GMT'}]
|
2007-05-23
|
[array(['Pardy', 'Miroslav', '',
'Masaryk University, Brno, Czech Republic'], dtype=object)]
|
6,553 |
cond-mat/0508517
|
Hai-Hu Wen
|
Hai-Hu Wen, Lei Shan, Xiao-Gang Wen, Yue Wang, Hong Gao, Zhi-Yong Liu,
Fang Zhou, Jiwu Xiong, Wenxin Ti
|
Pseudogap, Superconducting Energy Scale, and Fermi Arcs in Underdoped
Cuprate Superconductors
|
6 pages, 6 figures, to be published in Phys. Rev. B
|
Phys. Rev. B72, 134507(2005)
|
10.1103/PhysRevB.72.134507
| null |
cond-mat.supr-con cond-mat.str-el
| null |
Through the measurements of magnetic field dependence of specific heat in
$La_{2-x}Sr_xCuO_4$ in zero temperature limit, we determined the nodal slope
$v_\Delta$ of the quasiparticle gap. It is found that $v_\Delta$ has a very
similar doping dependence of the pseudogap temperature $T^*$ or value
$\Delta_p$. Meanwhile the virtual maximum gap at ($\pi,0$) derived from
$v_\Delta$ is found to follow the simple relation $\Delta_q=0.46k_BT^*$ upon
changing the doping concentration. This strongly suggests a close relationship
between the pseudogap and superconductivity. It is further found that the
superconducting transition temperature is determined by both the residual
density of states of the pseudogap phase and the nodal gap slope in the zero
temperature limit, namely, $T_c \approx \beta v_\Delta \gamma_n(0)$, where
$\gamma_n(0)$ is the extracted zero temperature value of the normal state
specific heat coefficient which is proportional to the size of the residual
Fermi arc $k_{arc}$. This manifests that the superconductivity may be formed by
forming a new gap on the Fermi arcs near nodes below $T_c$. These observations
mimic the key predictions of the SU(2) slave boson theory based on the general
resonating-valence-bond (RVB) picture.
|
[{'version': 'v1', 'created': 'Mon, 22 Aug 2005 14:38:06 GMT'}]
|
2009-11-11
|
[array(['Wen', 'Hai-Hu', ''], dtype=object)
array(['Shan', 'Lei', ''], dtype=object)
array(['Wen', 'Xiao-Gang', ''], dtype=object)
array(['Wang', 'Yue', ''], dtype=object)
array(['Gao', 'Hong', ''], dtype=object)
array(['Liu', 'Zhi-Yong', ''], dtype=object)
array(['Zhou', 'Fang', ''], dtype=object)
array(['Xiong', 'Jiwu', ''], dtype=object)
array(['Ti', 'Wenxin', ''], dtype=object)]
|
6,554 |
cs/0505084
|
Valentin Brimkov
|
Valentin Brimkov, Angelo Maimone, Giorgio Nordo
|
An explicit formula for the number of tunnels in digital objects
|
9 pages, 4 figures
| null | null | null |
cs.DM cs.CG cs.CV
| null |
An important concept in digital geometry for computer imagery is that of
tunnel. In this paper we obtain a formula for the number of tunnels as a
function of the number of the object vertices, pixels, holes, connected
components, and 2x2 grid squares. It can be used to test for tunnel-freedom a
digital object, in particular a digital curve.
|
[{'version': 'v1', 'created': 'Tue, 31 May 2005 00:44:16 GMT'}
{'version': 'v2', 'created': 'Wed, 7 Sep 2005 23:28:50 GMT'}]
|
2007-05-23
|
[array(['Brimkov', 'Valentin', ''], dtype=object)
array(['Maimone', 'Angelo', ''], dtype=object)
array(['Nordo', 'Giorgio', ''], dtype=object)]
|
6,555 |
1507.05815
|
Peter Casazza
|
Sara Botelho-Andrade, Peter G. Casazza, Hanh Van Nguyen, and Janet C.
Tremain
|
Phase Retrieval Versus Phaseless Reconstruction
| null | null | null | null |
math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In 2006, Balan/Casazza/Edidin \cite{BCE} introduced the frame theoretic study
of phaseless reconstruction. Since then, this has turned into a very active
area of research. Over the years, many people have replaced the term {\it
phaseless reconstruction} with {\it phase retrieval}. Casazza then asked: {\it
Are these really the same?} In this paper, we will show that phase retrieval is
equivalent to phaseless reconstruction. We then show, more generally, that
phase retrieval by projections is equivalent to phaseless reconstruction by
projections. Finally, we study {\it weak phase retrieval} and discover that it
is very different from phaseless reconstruction.
|
[{'version': 'v1', 'created': 'Tue, 21 Jul 2015 13:01:56 GMT'}]
|
2015-07-22
|
[array(['Botelho-Andrade', 'Sara', ''], dtype=object)
array(['Casazza', 'Peter G.', ''], dtype=object)
array(['Van Nguyen', 'Hanh', ''], dtype=object)
array(['Tremain', 'Janet C.', ''], dtype=object)]
|
6,556 |
1907.08132
|
Weipeng Zhu
|
Jinlu Li and Weipeng Zhu
|
A class large solution of 3D incompressible micropolar fluid system
|
10 pages. arXiv admin note: text overlap with arXiv:1904.01779
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we construct a class global large solution to the 3D
incompressible micropolar fluid system. Precisely speaking, by choosing a
special initial data which can be arbitrarily large in
$\dot{B}^{-1}_{\infty,\infty}$, the system has a unique global solution.
|
[{'version': 'v1', 'created': 'Wed, 17 Jul 2019 09:28:17 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Jun 2020 13:37:42 GMT'}]
|
2020-06-03
|
[array(['Li', 'Jinlu', ''], dtype=object)
array(['Zhu', 'Weipeng', ''], dtype=object)]
|
6,557 |
2109.09363
|
Ekhi Ajuria Illarramendi
|
Ekhi Ajuria Illarramendi, Micha\"el Bauerheim and B\'en\'edicte Cuenot
|
Performance and accuracy assessments of an incompressible fluid solver
coupled with a deep Convolutional Neural Network
| null | null | null | null |
physics.flu-dyn cs.LG
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
The resolution of the Poisson equation is usually one of the most
computationally intensive steps for incompressible fluid solvers. Lately, Deep
Learning, and especially Convolutional Neural Networks (CNN), has been
introduced to solve this equation, leading to significant inference time
reduction at the cost of a lack of guarantee on the accuracy of the solution.
This drawback might lead to inaccuracies and potentially unstable simulations.
It also makes impossible a fair assessment of the CNN speedup, for instance,
when changing the network architecture, since evaluated at different error
levels. To circumvent this issue, a hybrid strategy is developed, which couples
a CNN with a traditional iterative solver to ensure a user-defined accuracy
level. The CNN hybrid method is tested on two flow cases, consisting of a
variable-density plume with and without obstacles, demostrating remarkable
generalization capabilities, ensuring both the accuracy and stability of the
simulations. The error distribution of the predictions using several network
architectures is further investigated. Results show that the threshold of the
hybrid strategy defined as the mean divergence of the velocity field is
ensuring a consistent physical behavior of the CNN-based hybrid computational
strategy. This strategy allows a systematic evaluation of the CNN performance
at the same accuracy level for various network architectures. In particular,
the importance of incorporating multiple scales in the network architecture is
demonstrated, since improving both the accuracy and the inference performance
compared with feedforward CNN architectures, as these networks can provide
solutions 1 10-25 faster than traditional iterative solvers.
|
[{'version': 'v1', 'created': 'Mon, 20 Sep 2021 08:30:29 GMT'}
{'version': 'v2', 'created': 'Thu, 23 Sep 2021 00:03:46 GMT'}]
|
2021-09-24
|
[array(['Illarramendi', 'Ekhi Ajuria', ''], dtype=object)
array(['Bauerheim', 'Michaël', ''], dtype=object)
array(['Cuenot', 'Bénédicte', ''], dtype=object)]
|
6,558 |
nucl-th/0005067
|
Craig Roberts
|
M.B. Hecht, C.D. Roberts and S.M. Schmidt
|
DSE Hadron Phenomenology
|
7 pages, sprocl.sty, epsfig.sty. Contribution to the Proceedings of
the Workshop on Light-Cone QCD and Nonperturbative Hadron Physics, Adelaide,
Australia, 13-22 Dec 1999
| null | null |
ANL-PHY-9580-TH-2000
|
nucl-th hep-ph
| null |
A perspective on the contemporary use of Dyson-Schwinger equations, focusing
on some recent phenomenological applications: a description and unification of
light-meson observables using a one-parameter model of the effective
quark-quark interaction, and studies of leptonic and nonleptonic nucleon form
factors.
|
[{'version': 'v1', 'created': 'Thu, 25 May 2000 15:57:32 GMT'}]
|
2007-05-23
|
[array(['Hecht', 'M. B.', ''], dtype=object)
array(['Roberts', 'C. D.', ''], dtype=object)
array(['Schmidt', 'S. M.', ''], dtype=object)]
|
6,559 |
nlin/0610071
|
Hiromichi Suetani
|
Hiromichi Suetani, Tatsuo Yanagita, and Kazuyuki Aihara
|
Pulse Dynamics in Coupled Excitable FIbers: Soliton-like Collision,
Recombination, and Overtaking
|
22 pages, 16 figures, submitted for publication
| null |
10.1142/S0218127408021713
| null |
nlin.PS
| null |
We study the dynamics of a reaction-diffusion system composed of two mutually
coupled excitable fibers. We focus on the situation in which dynamical
properties of the two fibers are not identical because of the parameter
difference between the fibers. Using the spatially one-dimensional
FitzHugh-Nagumo equations as a model of a single excitable fiber, we show that
the system exhibits a rich variety of dynamical behavior, including
soliton-like collision between two pulses, recombination of a solitary pulse
and synchronized pulses, and overtaking of a slow-moving solitary pulse by
fast-moving synchronized pulses.
|
[{'version': 'v1', 'created': 'Mon, 30 Oct 2006 06:01:08 GMT'}]
|
2021-01-29
|
[array(['Suetani', 'Hiromichi', ''], dtype=object)
array(['Yanagita', 'Tatsuo', ''], dtype=object)
array(['Aihara', 'Kazuyuki', ''], dtype=object)]
|
6,560 |
astro-ph/9903131
|
Noel Robichon
|
N. Robichon (Sterrewacht, Leiden), F. Arenou (Observatoire de Paris),
J.-C. Mermilliod (Institut d'Astronomie de Lausanne), C. Turon (Observatoire
de Paris)
|
Open clusters with Hipparcos I. Mean astrometric parameters
|
15 pages, A&A in press
| null | null | null |
astro-ph
| null |
New memberships, mean parallaxes and proper motions of all 9 open clusters
closer than 300 pc (except the Hyades) and 9 rich clusters between 300 and 500
pc have been computed using Hipparcos data. Precisions, ranging from 0.2 to 0.5
mas for parallaxes and 0.1 to 0.5 mas/yr for proper motions, are of great
interest for calibrating photometric parallaxes as well as for kinematical
studies. Careful investigations of possible biases have been performed and no
evidence of significant systematic errors on the mean cluster parallaxes has
been found. The distances and proper motions of 32 more distant clusters, which
may be used statistically, are also indicated.
|
[{'version': 'v1', 'created': 'Tue, 9 Mar 1999 14:49:29 GMT'}]
|
2007-05-23
|
[array(['Robichon', 'N.', '', 'Sterrewacht, Leiden'], dtype=object)
array(['Arenou', 'F.', '', 'Observatoire de Paris'], dtype=object)
array(['Mermilliod', 'J. -C.', '', "Institut d'Astronomie de Lausanne"],
dtype=object)
array(['Turon', 'C.', '', 'Observatoire\n de Paris'], dtype=object)]
|
6,561 |
1603.05503
|
MacKenzie Warren
|
MacKenzie L. Warren, Grant J. Mathews, Matthew Meixner, Jun Hidaka,
and Toshitaka Kajino
|
Impact of sterile neutrino dark matter on core-collapse supernovae
|
18 pages, 6 figures, submitted to Modern Physics Letters A
| null |
10.1142/S0217751X16501372
| null |
astro-ph.HE hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We summarize the impact of sterile neutrino dark matter on core-collapse
supernova explosions. We explore various oscillations between electron
neutrinos or mixed $\mu-\tau$ neutrinos and right-handed sterile neutrinos that
may occur within a core-collapse supernova. In particular, we consider sterile
neutrino masses and mixing angles that are consistent with sterile neutrino
dark matter candidates as indicated by recent X-ray flux measurements. We find
that the interpretation of the observed 3.5 keV X-ray excess as due to a
decaying 7 keV sterile neutrino that comprises 100\% of the dark matter would
have almost no observable effect on supernova explosions. However, in the more
realistic case in which the decaying sterile neutrino comprises only a small
fraction of the total dark matter density due to the presence of other sterile
neutrino flavors, WIMPs, etc., a larger mixing angle is allowed. In this case a
7 keV sterile neutrino could have a significant impact on core-collapse
supernovae. We also consider mixing between $\mu-\tau$ neutrinos and sterile
neutrinos. We find, however, that this mixing does not significantly alter the
explosion and has no observable effect on the neutrino luminosities at early
times.
|
[{'version': 'v1', 'created': 'Thu, 17 Mar 2016 14:30:44 GMT'}
{'version': 'v2', 'created': 'Mon, 1 Aug 2016 14:09:36 GMT'}
{'version': 'v3', 'created': 'Tue, 2 Aug 2016 14:34:37 GMT'}]
|
2016-09-21
|
[array(['Warren', 'MacKenzie L.', ''], dtype=object)
array(['Mathews', 'Grant J.', ''], dtype=object)
array(['Meixner', 'Matthew', ''], dtype=object)
array(['Hidaka', 'Jun', ''], dtype=object)
array(['Kajino', 'Toshitaka', ''], dtype=object)]
|
6,562 |
0912.4709
|
J. -F. Pascual-Sanchez
|
A. San Miguel, F. Vicente and J.-F. Pascual-Sanchez
|
Numerical treatment of the light propagation problem in the
post-Newtonian formalism
|
7 pages, 1 fig., Talk given by JFPS in Sept, 10, 2009, to be
published in JPCS as Proceedings of Spanish Relativity Meeting-ERE 2009
|
J.Phys.Conf.Ser.229:012059,2010
|
10.1088/1742-6596/229/1/012059
| null |
gr-qc astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The geometry of a light wavefront, evolving from a initial flat wavefront in
the 3-space associated with a post-Newtonian relativistic spacetime, is studied
numerically by means of the ray tracing method. For a discretization of the
bidimensional light wavefront, a surface fitting technique is used to determine
the curvature of this surface. The relationship between the intrinsic curvature
of the wavefront and the change of the arrival time at different points on the
Earth is also numerically discussed.
|
[{'version': 'v1', 'created': 'Wed, 23 Dec 2009 18:52:39 GMT'}]
|
2014-11-20
|
[array(['Miguel', 'A. San', ''], dtype=object)
array(['Vicente', 'F.', ''], dtype=object)
array(['Pascual-Sanchez', 'J. -F.', ''], dtype=object)]
|
6,563 |
physics/0403022
|
Eric Lauga
|
Eric Lauga
|
Apparent slip due to the motion of suspended particles in flows of
electrolyte solutions
| null |
Langmuir (2004) 20, 8924-8930
|
10.1021/la049464r
| null |
physics.flu-dyn cond-mat.soft physics.gen-ph
| null |
We consider pressure-driven flows of electrolyte solutions in small channels
or capillaries in which tracer particles are used to probe velocity profiles.
Under the assumption that the double layer is thin compared to the channel
dimensions, we show that the flow-induced streaming electric field can create
an apparent slip velocity for the motion of the particles, even if the flow
velocity still satisfies the no-slip boundary condition. In this case, tracking
of particle would lead to the wrong conclusion that the no-slip boundary
condition is violated. We evaluate the apparent slip length, compare with
experiments, and discuss the implications of these results.
|
[{'version': 'v1', 'created': 'Tue, 2 Mar 2004 02:48:28 GMT'}]
|
2008-10-02
|
[array(['Lauga', 'Eric', ''], dtype=object)]
|
6,564 |
2201.02573
|
Mohamed-Amine Lahmeri
|
Mohamed-Amine Lahmeri, Mustafa A. Kishk, and Mohamed-Slim Alouini
|
Charging Techniques for UAV-assisted Data Collection: Is Laser Power
Beaming the Answer?
|
6 pages, 5 figures
| null | null | null |
cs.NI eess.SP
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
As Covid-19 has increased the need for connectivity around the world,
researchers are targeting new technologies that could improve coverage and
connect the unconnected in order to make progress toward the United Nations
Sustainable Development Goals. In this context, drones are seen as one of the
key features of 6G wireless networks that could extend the coverage of previous
wireless network generations. That said, limited on-board energy seems to be
the main drawback that hinders the use of drones for wireless coverage.
Therefore, different wireless and wired charging techniques, such as laser
beaming, charging stations, and tether stations are proposed. In this paper, we
analyze and compare these different charging techniques by performing extensive
simulations for the scenario of drone-assisted data collection from
ground-based Internet of Things (IoT) devices. We analyze the strengths and
weaknesses of each charging technique, and finally show that laser-powered
drones strongly compete with, and outperform in some scenarios other charging
techniques.
|
[{'version': 'v1', 'created': 'Thu, 4 Nov 2021 16:22:37 GMT'}]
|
2022-01-10
|
[array(['Lahmeri', 'Mohamed-Amine', ''], dtype=object)
array(['Kishk', 'Mustafa A.', ''], dtype=object)
array(['Alouini', 'Mohamed-Slim', ''], dtype=object)]
|
6,565 |
hep-th/9707258
|
Kazutoshi Ohta
|
Toshio Nakatsu, Kazutoshi Ohta, Takashi Yokono and Yuhsuke Yoshida
|
Higgs Branch of N=2 SQCD and M theory Branes
|
LaTeX, 21 pages, 5 figures, typos corrected, references added
|
Nucl.Phys. B519 (1998) 159-179
| null |
OU-HET 275
|
hep-th
| null |
Higgs branch of N=2 SQCD is studied from the M theory viewpoint. With a
differential geometrical proof of the s-rule besides an investigation on the
global symmetry of M theory brane configurations, an exact description of the
baryonic and non-baryonic branches in terms of M theory is presented. The
baryonic branch root is also studied. The ``electric'' and ``magnetic''
descriptions of the root are shown to be related with each other by the brane
exchange in M theory.
|
[{'version': 'v1', 'created': 'Thu, 31 Jul 1997 11:51:43 GMT'}
{'version': 'v2', 'created': 'Sat, 16 Aug 1997 12:54:48 GMT'}]
|
2008-02-03
|
[array(['Nakatsu', 'Toshio', ''], dtype=object)
array(['Ohta', 'Kazutoshi', ''], dtype=object)
array(['Yokono', 'Takashi', ''], dtype=object)
array(['Yoshida', 'Yuhsuke', ''], dtype=object)]
|
6,566 |
2202.02980
|
Xinzhu Ma
|
Xinzhu Ma, Wanli Ouyang, Andrea Simonelli, Elisa Ricci
|
3D Object Detection from Images for Autonomous Driving: A Survey
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
3D object detection from images, one of the fundamental and challenging
problems in autonomous driving, has received increasing attention from both
industry and academia in recent years. Benefiting from the rapid development of
deep learning technologies, image-based 3D detection has achieved remarkable
progress. Particularly, more than 200 works have studied this problem from 2015
to 2021, encompassing a broad spectrum of theories, algorithms, and
applications. However, to date no recent survey exists to collect and organize
this knowledge. In this paper, we fill this gap in the literature and provide
the first comprehensive survey of this novel and continuously growing research
field, summarizing the most commonly used pipelines for image-based 3D
detection and deeply analyzing each of their components. Additionally, we also
propose two new taxonomies to organize the state-of-the-art methods into
different categories, with the intent of providing a more systematic review of
existing methods and facilitating fair comparisons with future works. In
retrospect of what has been achieved so far, we also analyze the current
challenges in the field and discuss future directions for image-based 3D
detection research.
|
[{'version': 'v1', 'created': 'Mon, 7 Feb 2022 07:12:24 GMT'}
{'version': 'v2', 'created': 'Sat, 12 Feb 2022 19:43:31 GMT'}]
|
2022-02-15
|
[array(['Ma', 'Xinzhu', ''], dtype=object)
array(['Ouyang', 'Wanli', ''], dtype=object)
array(['Simonelli', 'Andrea', ''], dtype=object)
array(['Ricci', 'Elisa', ''], dtype=object)]
|
6,567 |
0902.2318
|
Bassano Vacchini
|
Heinz-Peter Breuer, Bassano Vacchini
|
Structure of completely positive quantum master equations with memory
kernel
|
13 pages, revtex, 2 figures
|
Phys. Rev. E 79 (2009) 041147
|
10.1103/PhysRevE.79.041147
| null |
quant-ph cond-mat.stat-mech math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Semi-Markov processes represent a well known and widely used class of random
processes in classical probability theory. Here, we develop an extension of
this type of non-Markovian dynamics to the quantum regime. This extension is
demonstrated to yield quantum master equations with memory kernels which allow
the formulation of explicit conditions for the complete positivity of the
corresponding quantum dynamical maps, thus leading to important insights into
the structural characterization of the non-Markovian quantum dynamics of open
systems. Explicit examples are analyzed in detail.
|
[{'version': 'v1', 'created': 'Fri, 13 Feb 2009 14:26:19 GMT'}]
|
2009-04-30
|
[array(['Breuer', 'Heinz-Peter', ''], dtype=object)
array(['Vacchini', 'Bassano', ''], dtype=object)]
|
6,568 |
1706.02388
|
Agnese Bissi
|
Luis F. Alday and Agnese Bissi
|
Loop Corrections to Supergravity on $AdS_5 \times S^5$
|
6 pages, minor changes, added references
|
Phys. Rev. Lett. 119, 171601 (2017)
|
10.1103/PhysRevLett.119.171601
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the four-point correlator of the stress-energy tensor multiplet
in ${\cal N}=4$ SYM. In the planar limit and at large 't Hooft coupling such
correlator is given by the corresponding holographic correlation function in
IIB supergravity on $AdS_5 \times S^5$. We consider subleading corrections in
the number of colours, i.e. order $1/N^4$, at large 't Hooft coupling. This
corresponds to loop corrections to the supergravity result. Consistency
conditions, most notably crossing symmetry, constrain the form of such
corrections and lead to a complete determination of the spectrum of leading
twist intermediate operators.
|
[{'version': 'v1', 'created': 'Wed, 7 Jun 2017 21:39:36 GMT'}
{'version': 'v2', 'created': 'Tue, 13 Jun 2017 16:03:47 GMT'}]
|
2017-11-01
|
[array(['Alday', 'Luis F.', ''], dtype=object)
array(['Bissi', 'Agnese', ''], dtype=object)]
|
6,569 |
2209.06908
|
Xiaojun Chang
|
Manting Liu, Xiaojun Chang
|
Normalized ground states for nonlinear Schr\"{o}dinger equations with
general Sobolev critical nonlinearities
|
15 pages
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we study the existence of normalized solutions to the
following nonlinear Schr\"{o}dinger equation \begin{equation*} \left\{
\begin{aligned} &-\Delta u=f(u)+ \lambda u\quad \mbox{in}\ \mathbb{R}^{N},\\
&u\in H^1(\mathbb{R}^N), ~~~\int_{\mathbb{R}^N}|u|^2dx=c, \end{aligned} \right.
\end{equation*} where $N\ge3$, $c>0$, $\lambda\in \mathbb{R}$ and $f$ has a
Sobolev critical growth at infinity but does not satisfies the
Ambrosetti-Rabinowitz condition. By analysing the monotonicity of the ground
state energy with respect to $c$, we develop a constrained minimization
approach to establish the existence of normalized ground state solutions for
all $c>0$.
|
[{'version': 'v1', 'created': 'Wed, 14 Sep 2022 20:04:53 GMT'}
{'version': 'v2', 'created': 'Sat, 3 Dec 2022 20:30:58 GMT'}]
|
2022-12-06
|
[array(['Liu', 'Manting', ''], dtype=object)
array(['Chang', 'Xiaojun', ''], dtype=object)]
|
6,570 |
math/9903189
|
Youssef Jabri
|
Youssef Jabri and Mimoun Moussaoui
|
On the Linking Principle
|
17 pages, part of the thesis of the first author (July 1995)
| null | null | null |
math.FA math.AP
| null |
We give a linking theorem that strengthens and unifies some many minimax
theorems including Ambrosetti-Rabinowitz ``mountain pass theorem'', Rabinowitz
``multidimensional mountain pass theorem'', Rabinowitz ``saddle point theorem''
and Silva's variants of these results.
We focus our attention especially on ``the limiting case'', known to be true
for the mountain pass principle, where some information on the location of the
critical points is given. Two forms of this theorem are given: the first one is
established via a deformation lemma and we use Ekeland's variational principle
to get the second one.
|
[{'version': 'v1', 'created': 'Wed, 31 Mar 1999 15:38:25 GMT'}]
|
2007-05-23
|
[array(['Jabri', 'Youssef', ''], dtype=object)
array(['Moussaoui', 'Mimoun', ''], dtype=object)]
|
6,571 |
2204.02996
|
Matthew Foster
|
Xinghai Zhang and Matthew S. Foster
|
Enhanced Amplitude for Superconductivity due to Spectrum-wide Wave
Function Criticality in Quasiperiodic and Power-law Random Hopping Models
|
8+9 pages, 4+13 figures; v2: added superfluid stiffness results
|
Phys. Rev. B 106, L180503 (2022)
|
10.1103/PhysRevB.106.L180503
| null |
cond-mat.supr-con cond-mat.dis-nn cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the interplay of superconductivity and a wide spectrum of critical
(multifractal) wave functions ("spectrum-wide quantum criticality," SWQC) in
the one-dimensional Aubry-Andr\'e and power-law random-banded matrix models
with attractive interactions, using self-consistent BCS theory. We find that
SWQC survives the incorporation of attractive interactions at the Anderson
localization transition, while the pairing amplitude is maximized near this
transition in both models. Our results suggest that SWQC, recently discovered
in two-dimensional topological surface-state and nodal superconductor models,
can robustly enhance superconductivity.
|
[{'version': 'v1', 'created': 'Wed, 6 Apr 2022 18:00:02 GMT'}
{'version': 'v2', 'created': 'Thu, 18 Aug 2022 00:07:21 GMT'}]
|
2022-11-04
|
[array(['Zhang', 'Xinghai', ''], dtype=object)
array(['Foster', 'Matthew S.', ''], dtype=object)]
|
6,572 |
2203.06663
|
Fuhai Chen
|
Chengpeng Dai, Fuhai Chen, Xiaoshuai Sun, Rongrong Ji, Qixiang Ye,
Yongjian Wu
|
Global2Local: A Joint-Hierarchical Attention for Video Captioning
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recently, automatic video captioning has attracted increasing attention,
where the core challenge lies in capturing the key semantic items, like objects
and actions as well as their spatial-temporal correlations from the redundant
frames and semantic content. To this end, existing works select either the key
video clips in a global level~(across multi frames), or key regions within each
frame, which, however, neglect the hierarchical order, i.e., key frames first
and key regions latter. In this paper, we propose a novel joint-hierarchical
attention model for video captioning, which embeds the key clips, the key
frames and the key regions jointly into the captioning model in a hierarchical
manner. Such a joint-hierarchical attention model first conducts a global
selection to identify key frames, followed by a Gumbel sampling operation to
identify further key regions based on the key frames, achieving an accurate
global-to-local feature representation to guide the captioning. Extensive
quantitative evaluations on two public benchmark datasets MSVD and MSR-VTT
demonstrates the superiority of the proposed method over the state-of-the-art
methods.
|
[{'version': 'v1', 'created': 'Sun, 13 Mar 2022 14:31:54 GMT'}]
|
2022-03-15
|
[array(['Dai', 'Chengpeng', ''], dtype=object)
array(['Chen', 'Fuhai', ''], dtype=object)
array(['Sun', 'Xiaoshuai', ''], dtype=object)
array(['Ji', 'Rongrong', ''], dtype=object)
array(['Ye', 'Qixiang', ''], dtype=object)
array(['Wu', 'Yongjian', ''], dtype=object)]
|
6,573 |
1811.12536
|
Benoit Fresse
|
Benoit Fresse
|
Little discs operads, graph complexes and Grothendieck--Teichm\"uller
groups
|
47 pages. First draft
| null | null | null |
math.AT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper is a survey on the homotopy theory of $E_n$-operads written for
the new handbook of homotopy theory.
|
[{'version': 'v1', 'created': 'Thu, 29 Nov 2018 23:37:38 GMT'}]
|
2018-12-03
|
[array(['Fresse', 'Benoit', ''], dtype=object)]
|
6,574 |
cond-mat/0207571
|
Nai-Gong Zhang
|
N.G. Zhang and C.L. Henley
|
Dilute limit of a strongly-interacting model of spinless fermions and
hardcore bosons on the square lattice
|
25 pages, 18 figures
| null | null | null |
cond-mat.str-el
| null |
In our model, spinless fermions (or hardcore bosons) on a square lattice hop
to nearest neighbor sites, and also experience a hard-core repulsion at the
nearest neighbor separation. This is the simplest model of correlated electrons
and is more tractable for exact diagonalization than the Hubbard model. We
study systematically the dilute limit of this model by a combination of
analytical and several numerical approaches: the two-particle problem using
lattice Green functions and the t-matrix, the few-fermion problem using a
modified t-matrix (demonstrating that the interaction energy is well captured
by pairwise terms), and for bosons the fitting of the energy as a function of
density to Schick's analytical result for dilute hard disks. We present the
first systematic study for a strongly-interacting lattice model of the
t-matrix, which appears as the central object in older theories of the
existence of a two-dimensional Fermi liquid for dilute fermions with strong
interactions. For our model, we can (Lanczos) diagonalize the 7 by 7 system at
all fillings and the 20 by 20 system with four particles, thus going far beyond
previous diagonalization works on the Hubbard model.
|
[{'version': 'v1', 'created': 'Wed, 24 Jul 2002 08:33:16 GMT'}]
|
2007-05-23
|
[array(['Zhang', 'N. G.', ''], dtype=object)
array(['Henley', 'C. L.', ''], dtype=object)]
|
6,575 |
1508.04155
|
Alexander Koplenig
|
Alexander Koplenig
|
Autocorrelated errors explain the apparent relationship between
disapproval of the US Congress and prosocial language
|
6 pages, 1 figure
| null | null | null |
stat.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recently, it has been claimed by Frimer et al. (2015) that there is a linear
relationship between the level of prosocial language and the level of public
disapproval of US Congress. A re-analysis demonstrates that this relationship
is the result of a misspecified model that does not account for first-order
autocorrelated disturbances. A Stata script to reproduce all presented results
is available as an appendix.
|
[{'version': 'v1', 'created': 'Mon, 8 Jun 2015 08:42:41 GMT'}]
|
2015-08-19
|
[array(['Koplenig', 'Alexander', ''], dtype=object)]
|
6,576 |
2008.08713
|
Baihong Jin
|
Yingshui Tan, Baihong Jin, Qiushi Cui, Xiangyu Yue, Alberto
Sangiovanni Vincentelli
|
Generalizing Fault Detection Against Domain Shifts Using
Stratification-Aware Cross-Validation
|
Submitted to Transactions on Cyber-Physical Systems for Special Issue
on AI and Cyber-Physical Systems
| null | null | null |
cs.LG cs.SY eess.SY stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Incipient anomalies present milder symptoms compared to severe ones, and are
more difficult to detect and diagnose due to their close resemblance to normal
operating conditions. The lack of incipient anomaly examples in the training
data can pose severe risks to anomaly detection methods that are built upon
Machine Learning (ML) techniques, because these anomalies can be easily
mistaken as normal operating conditions. To address this challenge, we propose
to utilize the uncertainty information available from ensemble learning to
identify potential misclassified incipient anomalies. We show in this paper
that ensemble learning methods can give improved performance on incipient
anomalies and identify common pitfalls in these models through extensive
experiments on two real-world datasets. Then, we discuss how to design more
effective ensemble models for detecting incipient anomalies.
|
[{'version': 'v1', 'created': 'Thu, 20 Aug 2020 00:03:09 GMT'}]
|
2020-08-21
|
[array(['Tan', 'Yingshui', ''], dtype=object)
array(['Jin', 'Baihong', ''], dtype=object)
array(['Cui', 'Qiushi', ''], dtype=object)
array(['Yue', 'Xiangyu', ''], dtype=object)
array(['Vincentelli', 'Alberto Sangiovanni', ''], dtype=object)]
|
6,577 |
2204.02989
|
Charlie Conroy
|
Charlie Conroy, David H. Weinberg, Rohan P. Naidu, Tobias Buck, James
W. Johnson, Phillip Cargile, Ana Bonaca, Nelson Caldwell, Vedant Chandra,
Jiwon Jesse Han, Benjamin D. Johnson, Joshua S. Speagle, Yuan-Sen Ting,
Turner Woody, Dennis Zaritsky
|
Birth of the Galactic Disk Revealed by the H3 Survey
|
13 pages, 10 figures, submitted to ApJ
| null | null | null |
astro-ph.GA
|
http://creativecommons.org/licenses/by/4.0/
|
We use chemistry ([alpha/Fe] and [Fe/H]), main sequence turnoff ages, and
kinematics determined from H3 Survey spectroscopy and Gaia astrometry to
identify the birth of the Galactic disk. We separate in-situ and accreted stars
on the basis of angular momenta and eccentricities. The sequence of high-alpha
in-situ stars persists down to at least [Fe/H]=-2.5 and shows unexpected
non-monotonic behavior: with increasing metallicity the population first
declines in [alpha/Fe], then increases over the range -1.3<[Fe/H]<-0.7, and
then declines again at higher metallicities. The number of stars in the in-situ
population rapidly increases above [Fe/H]=-1. The average kinematics of these
stars are hot and independent of metallicity at [Fe/H]<-1 and then become
increasingly cold and disk-like at higher metallicities. The ages of the
in-situ, high-alpha stars are uniformly very old (13 Gyr) at [Fe/H]<-1.3, and
span a wider range (8-12 Gyr) at higher metallicities. Interpreting the
chemistry with a simple chemical evolution model suggests that the
non-monotonic behavior is due to a significant increase in star formation
efficiency, which began 13 Gyr ago. These results support a picture in which
the first 1 Gyr of the Galaxy was characterized by a "simmering phase" in which
the star formation efficiency was low and the kinematics had substantial
disorder with some net rotation. The disk then underwent a dramatic
transformation to a "boiling phase", in which the star formation efficiency
increased substantially, the kinematics became disk-like, and the number of
stars formed increased tenfold. We interpret this transformation as the birth
of the Galactic disk at z~4. The physical origin of this transformation is
unclear and does not seem to be reproduced in current galaxy formation models.
|
[{'version': 'v1', 'created': 'Wed, 6 Apr 2022 18:00:01 GMT'}]
|
2022-04-08
|
[array(['Conroy', 'Charlie', ''], dtype=object)
array(['Weinberg', 'David H.', ''], dtype=object)
array(['Naidu', 'Rohan P.', ''], dtype=object)
array(['Buck', 'Tobias', ''], dtype=object)
array(['Johnson', 'James W.', ''], dtype=object)
array(['Cargile', 'Phillip', ''], dtype=object)
array(['Bonaca', 'Ana', ''], dtype=object)
array(['Caldwell', 'Nelson', ''], dtype=object)
array(['Chandra', 'Vedant', ''], dtype=object)
array(['Han', 'Jiwon Jesse', ''], dtype=object)
array(['Johnson', 'Benjamin D.', ''], dtype=object)
array(['Speagle', 'Joshua S.', ''], dtype=object)
array(['Ting', 'Yuan-Sen', ''], dtype=object)
array(['Woody', 'Turner', ''], dtype=object)
array(['Zaritsky', 'Dennis', ''], dtype=object)]
|
6,578 |
astro-ph/0105339
|
Roeland van der Marel
|
Roeland P. van der Marel (STScI, Baltimore), Maria-Rosa L. Cioni
(Leiden)
|
Magellanic Cloud Structure from Near-IR Surveys I: The Viewing Angles of
the LMC
|
Astronomical Journal, in press. 44 pages, LaTeX, with 8 PostScript
figures. Contains minor revisions with respect to previously posted version.
Check out http://www.stsci.edu/~marel/lmc.html for a large scale (23x21
degree) stellar number-density image of the LMC constructed from RGB and AGB
stars in the 2MASS and DENIS surveys. The paper is available with higher
resolution figures from http://www.stsci.edu/~marel/abstracts/abs_R31.html
|
Astron.J.122:1807-1826,2001
|
10.1086/323099
| null |
astro-ph
| null |
We present a detailed study of the viewing angles of the LMC disk plane. We
find that our viewing direction differs considerably from the commonly accepted
values, which has important implications for the structure of the LMC. The
discussion is based on an analysis of spatial variations in the apparent
magnitude of features in the near-IR color-magnitude diagrams extracted from
the DENIS and 2MASS surveys. Sinusoidal brightness variations with a
peak-to-peak amplitude of approximately 0.25 mag are detected as function of
position angle, for both AGB and RGB stars. This is naturally interpreted as
the result of distance variations, due to one side of the LMC plane being
closer to us than the opposite side. The best fitting geometric model of an
inclined plane yields an inclination angle i = 34.7 +/- 6.2 degrees and
line-of-nodes position angle Theta = 122.5 +/- 8.3 degrees. There is tentative
evidence that the LMC disk plane may be warped. Traditional methods to estimate
the position angle of the line of nodes have used either the major axis
position angle Theta_maj of the spatial distribution of tracers on the sky, or
the position angle Theta_max of the line of maximum gradient in the velocity
field, given that for a circular disk Theta_maj = Theta_max = Theta. The
present study does not rely on the assumption of circular symmetry, and is
considerably more accurate than previous studies of its kind. We find that the
actual position angle of the line of nodes differs considerably from both
Theta_maj and Theta_max, for which measurements have fallen in the range
140-190 degrees. This indicates that the intrinsic shape of the LMC disk is not
circular, but elliptical, as discussed further in Paper II. [Abridged]
|
[{'version': 'v1', 'created': 'Fri, 18 May 2001 21:13:20 GMT'}
{'version': 'v2', 'created': 'Thu, 28 Jun 2001 00:50:56 GMT'}]
|
2008-11-26
|
[array(['van der Marel', 'Roeland P.', '', 'STScI, Baltimore'],
dtype=object)
array(['Cioni', 'Maria-Rosa L.', '', 'Leiden'], dtype=object)]
|
6,579 |
2109.13020
|
Hisashi Hayakawa
|
Hisashi Hayakawa, Heikki Nevanlinna, S\'ean P. Blake, Yusuke Ebihara,
Ankush T. Bhaskar, Yoshizumi Miyoshi
|
Temporal Variations of the Three Geomagnetic Field Components at Colaba
Observatory around the Carrington Storm in 1859
|
17 pages, 4 figures, accepted for publication in the ApJ
|
2021, The Astrophysical Journal
|
10.3847/1538-4357/ac2601
| null |
astro-ph.SR astro-ph.EP physics.space-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Carrington storm in 1859 September has been arguably identified as the
greatest geomagnetic storm ever recorded. However, its exact magnitude and
chronology remain controversial, while their source data have been derived from
the Colaba H magnetometer. Here, we have located the Colaba 1859 yearbook,
containing hourly measurements and spot measurements. We have reconstructed the
Colaba geomagnetic disturbances in the horizontal component ({\Delta}H), the
eastward component ({\Delta}Y), and the vertical component ({\Delta}Z) around
the time of the Carrington storm. On their basis, we have chronologically
revised the ICME transit time as =< 17.1 hrs and located the {\Delta}H peak at
06:20 -- 06:25 UT, revealing a magnitude discrepancy between the hourly and
spot measurements (-1691 nT vs. -1263 nT). Furthermore, we have newly derived
the time series of {\Delta}Y and {\Delta}Z, which peaked at {\Delta}Y ~ 378 nT
(05:50 UT) and 377 nT (06:25 UT), and {\Delta}Z ~ -173 nT (06:40 UT). We have
also computed the hourly averages and removed the solar quiet (Sq) field
variations from each geomagnetic component to derive their hourly variations
with latitudinal weighting. Our calculations have resulted in the disturbance
variations (Dist) with latitudinal weighting of Dist Y ~ 328 nT and Dist Z ~
-36 nT, and three scenarios of Dist H ~ -918, -979, and -949 nT, which also
approximate the minimum Dst. These data may suggest preconditioning of the
geomagnetic field after the August storm ({\Delta}H =< -570 nT), which made the
September storm even more geoeffective.
|
[{'version': 'v1', 'created': 'Mon, 27 Sep 2021 12:56:42 GMT'}]
|
2021-09-28
|
[array(['Hayakawa', 'Hisashi', ''], dtype=object)
array(['Nevanlinna', 'Heikki', ''], dtype=object)
array(['Blake', 'Séan P.', ''], dtype=object)
array(['Ebihara', 'Yusuke', ''], dtype=object)
array(['Bhaskar', 'Ankush T.', ''], dtype=object)
array(['Miyoshi', 'Yoshizumi', ''], dtype=object)]
|
6,580 |
1002.4105
|
Gabriele Greco H.
|
Gabriele H. Greco and Enrico M. Pagani
|
Reworking on affine exterior algebra of Grassmann, Peano and his school
|
25 page, on the occasion of the 150th anniversary of the birth of
Giuseppe Peano (1858-1932)
| null | null | null |
math.HO math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper a construction of affine exterior algebra of Grassmann, with a
special attention to the revisitation of this subject operated by Peano and his
School, is examined from a historical viewpoint. Even if the exterior algebra
over a vector space is a well known concept, the construction of an exterior
algebra over an affine space, in which points and vectors coexist, has been
neglected. This paper wants to fill this lack.
Some attention is given to the introduction of defining by abstraction (today
called definition by quotienting or by equivalence relation), a procedure due
to and used by Peano to define geometric forms, basic elements of an affine
exterior algebra. This Peano's innovative way of defining, is a relevant
contribution to mathematics.
It is observed that in the construction of an affine exterior algebra on the
Euclidean three-dimensional space, Grassmann and Peano make use of metric
concepts: an accurate analysis shows that, in some cases, the metric aspects
can be eliminated, putting into evidence the sufficiency of the underlying
affine structure of the Euclidean space.
In the final part of the paper some geometrical and mechanical applications
and interpretations of the affine exterior algebra given by Grassmann and Peano
are presented.
|
[{'version': 'v1', 'created': 'Mon, 22 Feb 2010 15:46:08 GMT'}]
|
2010-02-23
|
[array(['Greco', 'Gabriele H.', ''], dtype=object)
array(['Pagani', 'Enrico M.', ''], dtype=object)]
|
6,581 |
1901.07586
|
Amy Sardone
|
Amy Sardone, D.J. Pisano, Sarah Burke-Spolaor, Joshua L. Mascoop,
Nihan Pol
|
Constraints on the HI Mass of NGC 1052-DF2
|
Accepted for publication in ApJL
| null |
10.3847/2041-8213/ab0084
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report deep, single-dish 21 cm observations of NGC 1052-DF2, taken with
the Green Bank Telescope. NGC 1052-DF2, proposed to be lacking in dark matter,
is currently classified as an ultra-diffuse galaxy in the NGC 1052 group. We do
not detect the galaxy, and derive an upper limit on the HI, mass. The galaxy is
extremely gas-poor, and we find that a $3\sigma \, M_{HI}$ detection at a
distance of 19 Mpc and using a line width of 3.2 km $\rm s^{-1}$ would have an
upper limit of $M_{HI,lim} < 5.5 \times 10^5$ M$_{\odot}$. At this mass limit,
the gas fraction of neutral gas mass to stellar mass is extremely low, at
$M_{HI}$/M$_{*}$ $\, < \, 0.0027$. This extremely low gas fraction, comparable
to Galactic dwarf spheroidals and gas-poor dwarf ellipticals, implies that
either the galaxy is within the virial radius of NGC1052, where its gas has
been stripped due to its proximity to the central galaxy, or that NGC 1052-DF2
is at distance large enough to inhibit detection of its gas. We also estimated
the upper limit of the HI mass of NGC 1052-DF2 resided at 13 Mpc. This would
give an HI mass of $M_{HI,lim} < 2.5 \times 10^5$ M$_{\odot}$, and an HI gas
fraction of $M_{HI}$/M$_{*}$r $\, < \, 0.0012$, becoming even more extreme.
While the dark matter fraction would be less extreme at this distance, the
neutral gas fraction would be unprecedented for an object in a low density
environment.
|
[{'version': 'v1', 'created': 'Tue, 22 Jan 2019 19:11:16 GMT'}]
|
2019-05-22
|
[array(['Sardone', 'Amy', ''], dtype=object)
array(['Pisano', 'D. J.', ''], dtype=object)
array(['Burke-Spolaor', 'Sarah', ''], dtype=object)
array(['Mascoop', 'Joshua L.', ''], dtype=object)
array(['Pol', 'Nihan', ''], dtype=object)]
|
6,582 |
1802.07761
|
George Tephnadze
|
I. Blahota, K. Nagy, L.E. Persson and G. Tephnadze
|
A sharp boundedness result for restricted maximal operators of
Vilenkin-Fourier series on martingale Hardy spaces
| null | null | null | null |
math.CA
|
http://creativecommons.org/publicdomain/zero/1.0/
|
The restricted maximal operators of partial sums with respect to bounded
Vilenkin systems are investigated. We derive the maximal subspace of positive
numbers, for which this operator is bounded from the Hardy space $%H_{p}$ to
the Lebesgue space $L_{p}$ for all $0<p\leq 1.$ We also prove that the result
is sharp in a particular sense.
|
[{'version': 'v1', 'created': 'Wed, 14 Feb 2018 00:10:12 GMT'}]
|
2018-02-23
|
[array(['Blahota', 'I.', ''], dtype=object)
array(['Nagy', 'K.', ''], dtype=object)
array(['Persson', 'L. E.', ''], dtype=object)
array(['Tephnadze', 'G.', ''], dtype=object)]
|
6,583 |
math/0104056
|
John M. Lee
|
Takao Akahori, Peter M. Garfield, and John M. Lee
|
Deformation theory of five-dimensional CR structures and the Rumin
complex
|
LaTeX2e, 35 pages
|
Michigan Math. J. 50 (2002), no. 3, 517-549
| null | null |
math.CV math.AG math.DG
| null |
We construct a versal family of deformations of CR structures in five
dimensions, using a differential complex closely related to the differential
form complex introduced by Rumin for contact manifolds.
|
[{'version': 'v1', 'created': 'Wed, 4 Apr 2001 19:35:31 GMT'}]
|
2007-05-23
|
[array(['Akahori', 'Takao', ''], dtype=object)
array(['Garfield', 'Peter M.', ''], dtype=object)
array(['Lee', 'John M.', ''], dtype=object)]
|
6,584 |
2210.16448
|
Chanyoung Sung
|
Chanyoung Sung
|
Kummer-type constructions of almost Ricci-flat 5-manifolds
| null | null | null | null |
math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A smooth closed manifold $M$ is called almost Ricci-flat if
$$\inf_g||\textrm{Ric}_g||_\infty\cdot \textrm{diam}_g(M)^2=0$$ where
$\textrm{Ric}_g$ and $\textrm{diam}_g$ denote the Ricci tensor and the diameter
of $g$ respectively and $g$ runs over all Riemannian metrics on $M$. By using
Kummer-type method we construct a smooth closed almost Ricci-flat nonspin
5-manifold $M$ which is simply connected. It's minimal volume vanishes, namely
it collapses with sectional curvature bounded.
|
[{'version': 'v1', 'created': 'Sat, 29 Oct 2022 00:08:15 GMT'}
{'version': 'v2', 'created': 'Fri, 31 Mar 2023 02:14:39 GMT'}]
|
2023-04-03
|
[array(['Sung', 'Chanyoung', ''], dtype=object)]
|
6,585 |
1806.06652
|
Neda Sadooghi
|
N. Sadooghi, M. Shokri
|
Rotating solutions of nonideal transverse Chern-Simons
magnetohydrodynamics and the anomalous Hall current
|
V1: 25 pages, 15 figures, 1 table; V2: Discussions improved. Version
accepted for publication in PRD
|
Phys. Rev. D 98, 076011 (2018)
|
10.1103/PhysRevD.98.076011
| null |
nucl-th cond-mat.str-el hep-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In order to gain deeper insight into the physics of the novel rotating
solution of nonideal transverse magnetohydrodynamics (MHD), presented in one of
our recent works, we replace the previously considered Maxwell theory with the
${\cal{CP}}$ violating Maxwell-Chern-Simons (MCS) theory. In this way,
dissipationless chiral magnetic (CM) and anomalous Hall (AH) currents appear in
the MCS equation of motion, that, together with equations of relativistic
hydrodynamics, builds the set of constitutive equations of the nonideal
transverse Chern-Simons magnetohydrodynamics (CSMHD). We are, in particular,
interested in the effect of these currents on the evolution of electromagnetic
fields in a uniformly and longitudinally expanding quark-gluon plasma with
chirality imbalance. Combining the constitutive equations of CSMHD under these
assumptions, we arrive, as expected, at two distinct rotating and nonrotating
solutions for electromagnetic fields. The rotation occurs with increasing
rapidity and a constant angular velocity $\omega_{0}$. Remarkably, the relative
angle between the electric and magnetic fields, $\delta$, turns out to be given
by the coefficient of AH current $\kappa_{E}$ and the electric conductivity of
the medium $\sigma$, as $\delta=\tan^{-1}(\kappa_{E}/\sigma)$. Whereas the
nonrotating solution implies the AH coefficient to be vanishing, and thus
nonrotating electric and magnetic fields to be either parallel or antiparallel,
the relative orientation of rotating electric and magnetic fields and the
evolution of the CM conductivity $\kappa_{B}$ are strongly affected by
nonvanishing $\kappa_{E}$. We explore the effect of positive and negative
$\omega_{0}$ on the evolution of the CM current, and show, in particular, that
a rotation of electromagnetic fields with negative $\omega_{0}$ implies a sign
flip of the CM current in a chiral fluid with nonvanishing AH current.
|
[{'version': 'v1', 'created': 'Mon, 18 Jun 2018 13:30:20 GMT'}
{'version': 'v2', 'created': 'Mon, 21 Jan 2019 14:23:34 GMT'}]
|
2019-01-23
|
[array(['Sadooghi', 'N.', ''], dtype=object)
array(['Shokri', 'M.', ''], dtype=object)]
|
6,586 |
0801.2143
|
Sukanta Dutta
|
Sukanta Dutta and Ashok Goyal
|
Neutrino, Photon Interaction in Unparticle Physics
|
11 pages, 3 figures
|
Phys.Lett.B664:25-30,2008
|
10.1016/j.physletb.2008.05.018
| null |
hep-ph
| null |
We investigate the impact of unparticle physics on the annihilation of relic
neutrinos with the neutrinos identified as primary source of ultra high energy
(UHE) cosmic ray events, producing a cascade of photons and charged particles.
We compute the contribution of the unparticle exchange to the cross-sections
$\nu \bar\nu\to\gamma \gamma$ and $\nu \bar\nu\to f \bar f$ scattering. We
estimate the neutrino photon decoupling temperature from the reaction rate of
$\nu \bar\nu\to\gamma \gamma$. We find that inclusion of unparticles can in
fact account for the flux of UHE cosmic rays and can also result in the
lowering of neutrino - photon decoupling temperature below the QCD phase
transition for unparticle physics parameters in a certain range. We calculate
the mean free path of these high energy neutrinos annihilating themselves with
the relic neutrinos to produce vector and tensor unparticles.
|
[{'version': 'v1', 'created': 'Mon, 14 Jan 2008 20:11:00 GMT'}]
|
2008-11-26
|
[array(['Dutta', 'Sukanta', ''], dtype=object)
array(['Goyal', 'Ashok', ''], dtype=object)]
|
6,587 |
quant-ph/0602166
|
Jian Wang
|
Jian Wang, Quan Zhang, Chao-jing Tang
|
Multiparty controlled quantum secret direct communication using
Greenberger-Horne-Zeilinger state
| null |
Opt. Commun., 2006, 266(2):732-737
|
10.1016/j.optcom.2006.05.035
| null |
quant-ph
| null |
Base on the idea of dense coding of three-photon entangled state and qubit
transmission in blocks, we present a multiparty controlled quantum secret
direct communication scheme using Greenberger-Horne-Zeilinger state. In the
present scheme, the sender transmits her three bits of secret message to the
receiver directly and the secret message can only be recovered by the receiver
under the permission of all the controllers. All three-photon entangled states
are used to transmit the secret messages except those chosen for eavesdropping
check and the present scheme has a high source capacity because
Greenberger-Horne-Zeilinger state forms a large Hilbert space.
|
[{'version': 'v1', 'created': 'Mon, 20 Feb 2006 18:06:03 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Feb 2006 18:44:02 GMT'}]
|
2009-11-13
|
[array(['Wang', 'Jian', ''], dtype=object)
array(['Zhang', 'Quan', ''], dtype=object)
array(['Tang', 'Chao-jing', ''], dtype=object)]
|
6,588 |
1702.08485
|
Michael J. Hudson
|
Seth D. Epps and Michael J. Hudson
|
The Weak Lensing Masses of Filaments between Luminous Red Galaxies
|
MNRAS, in press
|
MNRAS, 468, 2605 (2017)
|
10.1093/mnras/stx517
| null |
astro-ph.CO astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the standard model of non-linear structure formation, a cosmic web of
dark-matter dominated filaments connects dark matter halos. In this paper, we
stack the weak lensing signal of an ensemble of filaments between groups and
clusters of galaxies. Specifically, we detect the weak lensing signal, using
CFHTLenS galaxy ellipticities, from stacked filaments between SDSS-III/BOSS
luminous red galaxies (LRGs). As a control, we compare the physical LRG pairs
with projected LRG pairs that are more widely separated in redshift space. We
detect the excess filament mass density in the projected pairs at the $5\sigma$
level, finding a mass of $(1.6 \pm 0.3) \times 10^{13} M_{\odot}$ for a stacked
filament region 7.1 $h^{-1}$ Mpc long and 2.5 $h^{-1}$ Mpc wide. This filament
signal is compared with a model based on the three-point
galaxy-galaxy-convergence correlation function, as developed in Clampitt, Jain
& Takada (2014), yielding reasonable agreement.
|
[{'version': 'v1', 'created': 'Mon, 27 Feb 2017 19:29:12 GMT'}]
|
2017-05-12
|
[array(['Epps', 'Seth D.', ''], dtype=object)
array(['Hudson', 'Michael J.', ''], dtype=object)]
|
6,589 |
1906.06889
|
Almudena Alonso-Herrero
|
A. Alonso-Herrero, S. Garcia-Burillo, M. Pereira-Santaella, R. I.
Davies, F. Combes, M. Vestergaard, S. I. Raimundo, A. Bunker, T. Diaz-Santos,
P. Gandhi, I. Garcia-Bernete, E. K. S. Hicks, S. F. H\"onig, L. K. Hunt, M.
Imanishi, T. Izumi, N. A. Levenson, W. Maciejewski, C. Packham, C. Ramos
Almeida, C. Ricci, D. Rigopoulou, P. F. Roche, D. Rosario, M. Schartmann, A.
Usero, M. J. Ward
|
A nuclear molecular outflow in the Seyfert galaxy NGC3227
|
Accepted for publication in Astronomy and Astrophysics, 17 pages, 12
figures
| null |
10.1051/0004-6361/201935431
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present ALMA observations of the CO(2-1) and CO(3-2) molecular gas
transitions and associated (sub)-mm continua of the nearby Seyfert 1.5 galaxy
NGC3227 with angular resolutions 0.085-0.21" (7-15pc). On large scales the cold
molecular gas shows circular motions as well as streaming motions on scales of
a few hundred parsecs associated with a large scale bar. We fitted the nuclear
ALMA 1.3mm emission with an unresolved component and an extended component. The
850$\mu$m emission shows at least two extended components, one along the major
axis of the nuclear disk and the other along the axis of the ionization cone.
The molecular gas in the central region (1" ~73pc) shows several CO clumps with
complex kinematics which appears to be dominated by non-circular motions. While
we cannot demonstrate conclusively the presence of a warped nuclear disk, we
also detected non-circular motions along the kinematic minor axis. They reach
line-of-sight velocities of v-vsys =150-200km/s. Assuming that the radial
motions are in the plane of the galaxy, then we interpret them as a nuclear
molecular outflow due to molecular gas in the host galaxy being entrained by
the AGN wind. We derive molecular outflow rates of $5\,M_\odot\,{\rm yr}^{-1}$
and $0.6\,M_\odot\,{\rm yr}^{-1}$ at projected distances of up to 30pc to the
northeast and southwest of the AGN, respectively. At the AGN location we
estimate a mass in molecular gas of $5\times 10^{5}\,M_\odot$ and an average
column density $N({\rm H}_2) = 2-3\times 10^{23}\,{\rm cm}^{-2}$ in the inner
15pc. The nuclear molecular gas and sub-mm continuum emission of NGC3227 do not
resemble the classical compact torus. Rather, these emissions extend for
several tens of parsecs and appear connected with the circumnuclear ring in the
host galaxy disk, as found in other local AGN. (Abridged)
|
[{'version': 'v1', 'created': 'Mon, 17 Jun 2019 08:21:36 GMT'}]
|
2019-08-14
|
[array(['Alonso-Herrero', 'A.', ''], dtype=object)
array(['Garcia-Burillo', 'S.', ''], dtype=object)
array(['Pereira-Santaella', 'M.', ''], dtype=object)
array(['Davies', 'R. I.', ''], dtype=object)
array(['Combes', 'F.', ''], dtype=object)
array(['Vestergaard', 'M.', ''], dtype=object)
array(['Raimundo', 'S. I.', ''], dtype=object)
array(['Bunker', 'A.', ''], dtype=object)
array(['Diaz-Santos', 'T.', ''], dtype=object)
array(['Gandhi', 'P.', ''], dtype=object)
array(['Garcia-Bernete', 'I.', ''], dtype=object)
array(['Hicks', 'E. K. S.', ''], dtype=object)
array(['Hönig', 'S. F.', ''], dtype=object)
array(['Hunt', 'L. K.', ''], dtype=object)
array(['Imanishi', 'M.', ''], dtype=object)
array(['Izumi', 'T.', ''], dtype=object)
array(['Levenson', 'N. A.', ''], dtype=object)
array(['Maciejewski', 'W.', ''], dtype=object)
array(['Packham', 'C.', ''], dtype=object)
array(['Almeida', 'C. Ramos', ''], dtype=object)
array(['Ricci', 'C.', ''], dtype=object)
array(['Rigopoulou', 'D.', ''], dtype=object)
array(['Roche', 'P. F.', ''], dtype=object)
array(['Rosario', 'D.', ''], dtype=object)
array(['Schartmann', 'M.', ''], dtype=object)
array(['Usero', 'A.', ''], dtype=object)
array(['Ward', 'M. J.', ''], dtype=object)]
|
6,590 |
1902.02306
|
Bryan Hernandez
|
Bryan S. Hernandez, Eduardo R. Mendoza, and Aurelio A. de los Reyes V
|
A Computational Approach to Multistationarity of Power-Law Kinetic
Systems
| null |
J Math Chem 58 (2020) 56-87
|
10.1007/s10910-019-01072-7
| null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents a computational solution to determine if a chemical
reaction network endowed with power-law kinetics (PLK system) has the capacity
for multistationarity, i.e., whether there exist positive rate constants such
that the corresponding differential equations admit multiple positive steady
states within a stoichiometric class. The approach, which is called the
"Multistationarity Algorithm for PLK systems" (MSA), combines (i) the extension
of the "higher deficiency algorithm" of Ji and Feinberg for mass action to PLK
systems with reactant-determined interactions, and (ii) a method that
transforms any PLK system to a dynamically equivalent one with
reactant-determined interactions. Using this algorithm, we obtain two new
results: the monostationarity of a popular model of anaerobic yeast
fermentation pathway, and the multistationarity of a global carbon cycle model
with climate engineering, both in the generalized mass action format of
biochemical systems theory. We also provide examples of the broader scope of
our approach for deficiency one PLK systems in comparison to the extension of
Feinberg's "deficiency one algorithm" to such systems.
|
[{'version': 'v1', 'created': 'Wed, 6 Feb 2019 18:00:36 GMT'}
{'version': 'v2', 'created': 'Thu, 8 Aug 2019 05:29:04 GMT'}
{'version': 'v3', 'created': 'Tue, 18 Feb 2020 14:23:01 GMT'}]
|
2020-02-19
|
[array(['Hernandez', 'Bryan S.', ''], dtype=object)
array(['Mendoza', 'Eduardo R.', ''], dtype=object)
array(['Reyes', 'Aurelio A. de los', 'V'], dtype=object)]
|
6,591 |
0908.3291
|
Saharian
|
A. A. Saharian, A. L. Mkhitaryan
|
Vacuum fluctuations and topological Casimir effect in
Friedmann-Robertson-Walker cosmologies with compact dimensions
|
20 pages, 2 figures
|
Eur.Phys.J.C66:295-306,2010
|
10.1140/epjc/s10052-010-1247-0
| null |
hep-th gr-qc quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the Wightman function, the vacuum expectation values of the
field squared and the energy-momentum tensor for a massless scalar field with
general curvature coupling parameter in spatially flat
Friedmann-Robertson-Walker universes with an arbitrary number of toroidally
compactified dimensions. The topological parts in the expectation values are
explicitly extracted and in this way the renormalization is reduced to that for
the model with trivial topology. In the limit when the comoving lengths of the
compact dimensions are very short compared to the Hubble length, the
topological parts coincide with those for a conformal coupling and they are
related to the corresponding quantities in the flat spacetime by standard
conformal transformation. In the opposite limit of large comoving lengths of
the compact dimensions, in dependence of the curvature coupling parameter, two
regimes are realized with monotonic or oscillatory behavior of the vacuum
expectation values. In the monotonic regime and for nonconformally and
nonminimally coupled fields the vacuum stresses are isotropic and the equation
of state for the topological parts in the energy density and pressures is of
barotropic type. In the oscillatory regime, the amplitude of the oscillations
for the topological part in the expectation value of the field squared can be
either decreasing or increasing with time, whereas for the energy-momentum
tensor the oscillations are damping.
|
[{'version': 'v1', 'created': 'Sun, 23 Aug 2009 09:40:05 GMT'}]
|
2010-08-11
|
[array(['Saharian', 'A. A.', ''], dtype=object)
array(['Mkhitaryan', 'A. L.', ''], dtype=object)]
|
6,592 |
1506.00249
|
Vadim E. Levit
|
Adi Jarden, Vadim E. Levit and Eugen Mandrescu
|
Monotonic Properties of Collections of Maximum Independent Sets of a
Graph
|
15 pages, 7 figures
| null | null | null |
cs.DM math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let G be a simple graph with vertex set V(G). A subset S of V(G) is
independent if no two vertices from S are adjacent. The graph G is known to be
a Konig-Egervary if alpha(G) + mu(G)= |V(G)|, where alpha(G) denotes the size
of a maximum independent set and mu(G) is the cardinality of a maximum
matching. Let Omega(G) denote the family of all maximum independent sets, and f
be the function from the set of subcollections Gamma of Omega(G) such that
f(Gamma) = (the cardinality of the union of elements of Gamma) + (the
cardinality of the intersection of elements of Gamma). Our main finding claims
that f is "<<"-increasing, where the preorder {Gamma1} << {Gamma2} means that
the union of all elements of {Gamma1} is a subset of the union of all elements
of {Gamma2}, while the intersection of all elements of {Gamma2} is a subset of
the intersection of all elements of {Gamma1}. Let us say that a family {Gamma}
is a Konig-Egervary collection if f(Gamma) = 2*alpha(G). We conclude with the
observation that for every graph G each subcollection of a Konig-Egervary
collection is Konig-Egervary as well.
|
[{'version': 'v1', 'created': 'Sun, 31 May 2015 16:09:17 GMT'}]
|
2015-06-02
|
[array(['Jarden', 'Adi', ''], dtype=object)
array(['Levit', 'Vadim E.', ''], dtype=object)
array(['Mandrescu', 'Eugen', ''], dtype=object)]
|
6,593 |
2009.09450
|
Tianshui Chen
|
Tianshui Chen, Liang Lin, Riquan Chen, Xiaolu Hui, and Hefeng Wu
|
Knowledge-Guided Multi-Label Few-Shot Learning for General Image
Recognition
|
Accepted at TPAMI
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recognizing multiple labels of an image is a practical yet challenging task,
and remarkable progress has been achieved by searching for semantic regions and
exploiting label dependencies. However, current works utilize RNN/LSTM to
implicitly capture sequential region/label dependencies, which cannot fully
explore mutual interactions among the semantic regions/labels and do not
explicitly integrate label co-occurrences. In addition, these works require
large amounts of training samples for each category, and they are unable to
generalize to novel categories with limited samples. To address these issues,
we propose a knowledge-guided graph routing (KGGR) framework, which unifies
prior knowledge of statistical label correlations with deep neural networks.
The framework exploits prior knowledge to guide adaptive information
propagation among different categories to facilitate multi-label analysis and
reduce the dependency of training samples. Specifically, it first builds a
structured knowledge graph to correlate different labels based on statistical
label co-occurrence. Then, it introduces the label semantics to guide learning
semantic-specific features to initialize the graph, and it exploits a graph
propagation network to explore graph node interactions, enabling learning
contextualized image feature representations. Moreover, we initialize each
graph node with the classifier weights for the corresponding label and apply
another propagation network to transfer node messages through the graph. In
this way, it can facilitate exploiting the information of correlated labels to
help train better classifiers. We conduct extensive experiments on the
traditional multi-label image recognition (MLR) and multi-label few-shot
learning (ML-FSL) tasks and show that our KGGR framework outperforms the
current state-of-the-art methods by sizable margins on the public benchmarks.
|
[{'version': 'v1', 'created': 'Sun, 20 Sep 2020 15:05:29 GMT'}]
|
2020-09-22
|
[array(['Chen', 'Tianshui', ''], dtype=object)
array(['Lin', 'Liang', ''], dtype=object)
array(['Chen', 'Riquan', ''], dtype=object)
array(['Hui', 'Xiaolu', ''], dtype=object)
array(['Wu', 'Hefeng', ''], dtype=object)]
|
6,594 |
1206.6875
|
Tomi Silander
|
Tomi Silander, Petri Myllymaki
|
A simple approach for finding the globally optimal Bayesian network
structure
|
Appears in Proceedings of the Twenty-Second Conference on Uncertainty
in Artificial Intelligence (UAI2006)
| null | null |
UAI-P-2006-PG-445-452
|
cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the problem of learning the best Bayesian network structure with
respect to a decomposable score such as BDe, BIC or AIC. This problem is known
to be NP-hard, which means that solving it becomes quickly infeasible as the
number of variables increases. Nevertheless, in this paper we show that it is
possible to learn the best Bayesian network structure with over 30 variables,
which covers many practically interesting cases. Our algorithm is less
complicated and more efficient than the techniques presented earlier. It can be
easily parallelized, and offers a possibility for efficient exploration of the
best networks consistent with different variable orderings. In the experimental
part of the paper we compare the performance of the algorithm to the previous
state-of-the-art algorithm. Free source-code and an online-demo can be found at
http://b-course.hiit.fi/bene.
|
[{'version': 'v1', 'created': 'Wed, 27 Jun 2012 16:30:42 GMT'}]
|
2012-07-02
|
[array(['Silander', 'Tomi', ''], dtype=object)
array(['Myllymaki', 'Petri', ''], dtype=object)]
|
6,595 |
1710.08758
|
Kitty Meeks
|
Jessica Enright, Kitty Meeks and Jessica Ryan
|
Two dichotomies for model-checking in multi-layer structures
|
One incorrect reference fixed
| null | null | null |
cs.DM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Multi-layer graphs can capture qualitatively different types of connection
between entities, and networks of this kind are prevalent in biological and
social systems: for example, a social contact network typically involves both
virtual and face-to-face interactions between individuals. Since each layer is
likely to exhibit stronger and/or more easily identifiable structurally
properties than the overall system, it is natural to ask whether we can exploit
the structural properties of individual layers to solve NP-hard problems
efficiently on the overall network. In this paper we provide a complete
characterisation of the structural properties required in each layer to
guarantee the existence of an FPT algorithm to solve problems definable in
either first-order or monadic second-order logic on the overall system, subject
to the assumption that the structural properties are preserved under deletion
of vertices and/or edges.
|
[{'version': 'v1', 'created': 'Tue, 24 Oct 2017 13:29:17 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Nov 2017 08:48:23 GMT'}
{'version': 'v3', 'created': 'Fri, 16 Feb 2018 11:39:37 GMT'}
{'version': 'v4', 'created': 'Wed, 26 Feb 2020 10:27:16 GMT'}
{'version': 'v5', 'created': 'Fri, 19 Jun 2020 11:28:35 GMT'}
{'version': 'v6', 'created': 'Thu, 23 Jul 2020 14:09:16 GMT'}]
|
2020-07-24
|
[array(['Enright', 'Jessica', ''], dtype=object)
array(['Meeks', 'Kitty', ''], dtype=object)
array(['Ryan', 'Jessica', ''], dtype=object)]
|
6,596 |
1310.4950
|
Harus Zahid
|
H.J. Zahid, D. Kashino, J.D. Silverman, L.J. Kewley, E.Daddi, A.
Renzini, G. Rodighiero, T. Nagao, N. Arimoto, D.B. Sanders, J. Kartaltepe,
S.J. Lilly, C. Maier, M.J. Geller, P. Capak, C.M. Carollo, J. Chu, G.
Hasinger, O. Ilbert, M. Kajisawa, A.M. Koekemoer, K. Kovac, O. Le Fevre, D.
Masters, H.J. McCracken, M. Onodera, N. Scoville, V. Strazzullo, N. Sugiyama,
Y. Taniguchi and The COSMOS Team
|
The FMOS-Cosmos Survey of Star-Forming Galaxies at z~1.6 II. The
Mass-Metallicity Relation and the Dependence on Star Formation Rate and Dust
Extinction
|
21 pages, 14 figures. Updated to accepted version
| null |
10.1088/0004-637X/792/1/75
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the relationships between stellar mass, gas-phase oxygen
abundance (metallicity), star formation rate, and dust content of star-forming
galaxies at z$\sim$1.6 using Subaru/FMOS spectroscopy in the COSMOS field. The
mass-metallicity relation at $z\sim1.6$ is steeper than the relation observed
in the local Universe. The steeper MZ relation at $z\sim1.6$ is mainly due to
evolution in the stellar mass where the MZ relation begins to turnover and
flatten. This turnover mass is 1.2 dex larger at $z\sim1.6$. The most massive
galaxies at $z\sim1.6$ ($\sim 10^{11}M_\odot$) are enriched to the level
observed in massive galaxies in the local Universe. The mass-metallicity
relation we measure at $z\sim1.6$ supports the suggestion of an empirical upper
metallicity limit that does not significantly evolve with redshift. We find an
anti-correlation between metallicity and star formation rate for galaxies at a
fixed stellar mass at $z\sim1.6$ which is similar to trends observed in the
local Universe. We do not find a relation between stellar mass, metallicity and
star formation rate that is independent of redshift; our data suggest that
there is redshift evolution in this relation. We examine the relation between
stellar mass, metallicity and dust extinction. We find that at a fixed stellar
mass dustier galaxies tend to be more metal rich. From examination of the
stellar masses, metallicities, SFRs and dust extinctions we conclude that
stellar mass is most closely related to dust extinction.
|
[{'version': 'v1', 'created': 'Fri, 18 Oct 2013 08:53:31 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Jul 2014 11:56:51 GMT'}
{'version': 'v3', 'created': 'Fri, 11 Jul 2014 19:00:40 GMT'}]
|
2015-06-17
|
[array(['Zahid', 'H. J.', ''], dtype=object)
array(['Kashino', 'D.', ''], dtype=object)
array(['Silverman', 'J. D.', ''], dtype=object)
array(['Kewley', 'L. J.', ''], dtype=object)
array(['Daddi', 'E.', ''], dtype=object)
array(['Renzini', 'A.', ''], dtype=object)
array(['Rodighiero', 'G.', ''], dtype=object)
array(['Nagao', 'T.', ''], dtype=object)
array(['Arimoto', 'N.', ''], dtype=object)
array(['Sanders', 'D. B.', ''], dtype=object)
array(['Kartaltepe', 'J.', ''], dtype=object)
array(['Lilly', 'S. J.', ''], dtype=object)
array(['Maier', 'C.', ''], dtype=object)
array(['Geller', 'M. J.', ''], dtype=object)
array(['Capak', 'P.', ''], dtype=object)
array(['Carollo', 'C. M.', ''], dtype=object)
array(['Chu', 'J.', ''], dtype=object)
array(['Hasinger', 'G.', ''], dtype=object)
array(['Ilbert', 'O.', ''], dtype=object)
array(['Kajisawa', 'M.', ''], dtype=object)
array(['Koekemoer', 'A. M.', ''], dtype=object)
array(['Kovac', 'K.', ''], dtype=object)
array(['Fevre', 'O. Le', ''], dtype=object)
array(['Masters', 'D.', ''], dtype=object)
array(['McCracken', 'H. J.', ''], dtype=object)
array(['Onodera', 'M.', ''], dtype=object)
array(['Scoville', 'N.', ''], dtype=object)
array(['Strazzullo', 'V.', ''], dtype=object)
array(['Sugiyama', 'N.', ''], dtype=object)
array(['Taniguchi', 'Y.', ''], dtype=object)
array(['Team', 'The COSMOS', ''], dtype=object)]
|
6,597 |
1808.09720
|
Chunfeng Cui
|
Chunfeng Cui and Zheng Zhang
|
Stochastic Collocation with Non-Gaussian Correlated Process Variations:
Theory, Algorithms and Applications
|
14 pages,11 figure. 4 tables
| null | null | null |
math.NA math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Stochastic spectral methods have achieved great success in the uncertainty
quantification of many engineering problems, including electronic and photonic
integrated circuits influenced by fabrication process variations. Existing
techniques employ a generalized polynomial-chaos expansion, and they almost
always assume that all random parameters are mutually independent or Gaussian
correlated. However, this assumption is rarely true in real applications. How
to handle non-Gaussian correlated random parameters is a long-standing and
fundamental challenge. A main bottleneck is the lack of theory and
computational methods to perform a projection step in a correlated uncertain
parameter space. This paper presents an optimization-based approach to
automatically determinate the quadrature nodes and weights required in a
projection step, and develops an efficient stochastic collocation algorithm for
systems with non-Gaussian correlated parameters. We also provide some
theoretical proofs for the complexity and error bound of our proposed method.
Numerical experiments on synthetic, electronic and photonic integrated circuit
examples show the nearly exponential convergence rate and excellent efficiency
of our proposed approach. Many other challenging uncertainty-related problems
can be further solved based on this work.
|
[{'version': 'v1', 'created': 'Wed, 29 Aug 2018 10:37:42 GMT'}
{'version': 'v2', 'created': 'Wed, 5 Dec 2018 05:24:10 GMT'}]
|
2018-12-06
|
[array(['Cui', 'Chunfeng', ''], dtype=object)
array(['Zhang', 'Zheng', ''], dtype=object)]
|
6,598 |
0707.3714
|
James Dufty
|
James W. Dufty
|
Nonequilibrium Statistical Mechanics and Hydrodynamics for a Granular
Fluid
|
notes prepared as the basis for six lectures at the Second Warsaw
School on Statistical Physics held in Kazimierz, Poland, June 2007
| null | null | null |
cond-mat.stat-mech cond-mat.soft
| null |
Granular fluids consist of collections of activated mesoscopic or macroscopic
particles (e.g., powders or grains) whose flows often appear similar to those
of normal fluids. To explore the qualitative and quantitative description of
these flows an idealized model for such fluids, a system of smooth inelastic
hard spheres, is considered. The single feature distinguishing granular and
normal fluids being explored in this way is the inelasticity of collisions. The
dominant differences observed in real granular fluids are indeed captured by
this feature. Following a brief introductory description of real granular
fluids and motivation for the idealized model, the elements of nonequilibrium
statistical mechanics are recalled (observables, states, and their dynamics).
Peculiarities of the hard sphere interactions are developed in detail. The
exact microscopic balance equations for the number, energy, and momentum
densities are derived and their averages described as the origin for a possible
macroscopic continuum mechanics description. This formally exact analysis leads
to closed, macroscopic hydrodynamic equations through the notion of a "normal"
state. This concept is introduced and the Navier-Stokes constitutive equations
are derived, with associated Green-Kubo expressions for the transport
coefficients. A parallel description of granular gases is described in the
context of kinetic theory, and the Boltzmann limit is identified critically.
The construction of the "normal" solution to the kinetic equation is outlined,
and Navier-Stokes order hydrodynamic equations are re-derived for a low density
granular gas.
|
[{'version': 'v1', 'created': 'Wed, 25 Jul 2007 11:39:06 GMT'}]
|
2007-07-26
|
[array(['Dufty', 'James W.', ''], dtype=object)]
|
6,599 |
cond-mat/0006051
|
Markus Porto
|
Markus Porto, Michael Urbakh, and Joseph Klafter
|
Molecular motor that never steps backwards
|
4 pages, 5 figures, Phys. Rev. Lett. (in print)
|
Phys. Rev. Lett. 85, 491 (2000)
|
10.1103/PhysRevLett.85.491
| null |
cond-mat
| null |
We investigate the dynamics of a classical particle in a one-dimensional
two-wave potential composed of two periodic potentials, that are
time-independent and of the same amplitude and periodicity. One of the periodic
potentials is externally driven and performs a translational motion with
respect to the other. It is shown that if one of the potentials is of the
ratchet type, translation of the potential in a given direction leads to motion
of the particle in the same direction, whereas translation in the opposite
direction leaves the particle localized at its original location. Moreover,
even if the translation is random, but still has a finite velocity, an
efficient directed transport of the particle occurs.
|
[{'version': 'v1', 'created': 'Sun, 4 Jun 2000 09:32:40 GMT'}]
|
2009-10-31
|
[array(['Porto', 'Markus', ''], dtype=object)
array(['Urbakh', 'Michael', ''], dtype=object)
array(['Klafter', 'Joseph', ''], dtype=object)]
|
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