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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17,100 |
nlin/0505003
|
Yurii V. Brezhnev
|
Yu.V.Brezhnev
|
What does integrability of finite-gap or soliton potentials mean?
|
Major changes. 23 pages; LaTeX
|
Phyl. Trans. of Royal Society A (2008), v.366(1867), March 28,
923-945
| null | null |
nlin.SI
| null |
In the example of the Schr\"odinger/KdV equation we treat the theory as
equivalence of two concepts of Liouvillian integrability: quadrature
integrability of linear differential equations with a parameter (spectral
problem) and Liouville's integrability of finite-dimensional Hamiltonian
systems (stationary KdV--equations). Three key objects in this field: new
explicit $\Psi$-function, trace formula and the Jacobi problem provide a
complete solution. The $\Theta$-function language is derivable from these
objects and used for ultimate representation of a solution to the inversion
problem. Relations with non-integrable equations are discussed also.
|
[{'version': 'v1', 'created': 'Sun, 1 May 2005 20:10:43 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Apr 2006 23:41:56 GMT'}]
|
2008-08-26
|
[array(['Brezhnev', 'Yu. V.', ''], dtype=object)]
|
17,101 |
hep-th/9305157
|
Jean-Philippe Brunet
|
Carlos Castro (I.A.E.C 1407 Alegria Austin, Texas USA)
|
A New Spinning Membrane Lagrangian
|
submitted to the Journal of Group Theory in Physics 14 pages
|
Int.J.Groups Phys. 1 (1993) 215
| null |
IAEC-5-93
|
hep-th
| null |
A new local world volume supersymmetric Lagrangian for the bosonic membrane
is presented. The starting Lagrangian is the one constructed by Dolan and
Tchrakian with vanishing cosmological constant, with quadratic and quartic
derivative terms. Our Lagrangian differs from the one constructed by Lindstrom
and Rocek in the fact that it is polynomial in the fields facilitating the
quantization process. It is argued, rigorously, that if one wishes to construct
polynomial actions without a curvature scalar term and, where supersymmetry is
linearly realized in the space of physical fields, after the elimination of
auxiliary fields, one must relinquish $S$ supersymmetry, altogether, and
concentrate solely on the $Q$ supersymmetry associated with the superconformal
algebra in three dimensions. A full $''Q+S''$ supersymmetry cannot be
implemented in a linearly realized way satisfying all of the above-mentioned
requirements, unless a non-polynomial action is chosen.
PACS:04.65.+e, 04.20.Fy.
|
[{'version': 'v1', 'created': 'Thu, 27 May 1993 20:40:40 GMT'}]
|
2007-05-23
|
[array(['Castro', 'Carlos', '', 'I.A.E.C 1407 Alegria Austin, Texas USA'],
dtype=object) ]
|
17,102 |
2107.10395
|
Agnaldo Batista
|
Gustavo Oliveira, Agnaldo de Souza Batista, Michele Nogueira and Aldri
Santos
|
An Access Control for IoT Based on Network Community Perception and
Social Trust Against Sybil Attacks
|
This work has been submitted to the International Journal of Network
Management (IJNM) and accepted for publication. Copyright may be transferred
without notice, after which this version may no longer be accessible
| null | null | null |
cs.SI cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The evolution of the Internet of Things (IoT) has increased the connection of
personal devices, mainly taking into account the habits and behavior of their
owners. These environments demand access control mechanisms to protect them
against intruders, like Sybil attacks. that can compromise data privacy or
disrupt the network operation. The Social IoT paradigm enables access control
systems to aggregate community context and sociability information from devices
to enhance robustness and security. This work introduces the ELECTRON mechanism
to control access in IoT networks based on social trust between devices to
protect the network from Sybil attackers. ELECTRON groups IoT devices into
communities by their social similarity and evaluates their social trust,
strengthening the reliability between legitimate devices and their resilience
against the interaction of Sybil attackers. NS-3 Simulations show the ELECTRON
performance under Sybil attacks on several IoT communities so that it has
gotten to detect more than 90% of attackers in a scenario with 150 nodes into
offices, schools, gyms, and~parks communities, and in other scenarios for same
communities it achieved around of 90\% of detection. Furthermore, it provided
high accuracy, over 90-95%, and false positive rates closer to zero.
|
[{'version': 'v1', 'created': 'Wed, 21 Jul 2021 23:53:01 GMT'}]
|
2021-07-23
|
[array(['Oliveira', 'Gustavo', ''], dtype=object)
array(['Batista', 'Agnaldo de Souza', ''], dtype=object)
array(['Nogueira', 'Michele', ''], dtype=object)
array(['Santos', 'Aldri', ''], dtype=object)]
|
17,103 |
1709.06794
|
Du\v{s}an Repov\v{s}
|
Nikolaos S. Papageorgiou, Vicen\c{t}iu D. R\u{a}dulescu and Du\v{s}an
D. Repov\v{s}
|
Nodal solutions for the Robin $p$-Laplacian plus an indefinite potential
and a general reaction term
| null |
Commun. Pure Appl. Anal. 17:1 (2018), 231-241
|
10.3934/cpaa.2018014
| null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a nonlinear Robin problem driven by the $p$-Laplacian plus an
indefinite potential. The reaction term is of arbitrary growth and only
conditions near zero are imposed. Using critical point theory together with
suitable truncation and perturbation techniques and comparison principles, we
show that the problem admits a sequence of distinct smooth nodal solutions
converging to zero in $C^1(\overline{\Omega})$.
|
[{'version': 'v1', 'created': 'Wed, 20 Sep 2017 10:02:38 GMT'}]
|
2017-09-21
|
[array(['Papageorgiou', 'Nikolaos S.', ''], dtype=object)
array(['Rădulescu', 'Vicenţiu D.', ''], dtype=object)
array(['Repovš', 'Dušan D.', ''], dtype=object)]
|
17,104 |
1510.02175
|
Bai Jiang
|
Bai Jiang, Tung-yu Wu, Charles Zheng, Wing H. Wong
|
Learning Summary Statistic for Approximate Bayesian Computation via Deep
Neural Network
|
27 pages, 10 figures
| null |
10.5705/ss.202015.0340
| null |
stat.ME stat.CO stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Approximate Bayesian Computation (ABC) methods are used to approximate
posterior distributions in models with unknown or computationally intractable
likelihoods. Both the accuracy and computational efficiency of ABC depend on
the choice of summary statistic, but outside of special cases where the optimal
summary statistics are known, it is unclear which guiding principles can be
used to construct effective summary statistics. In this paper we explore the
possibility of automating the process of constructing summary statistics by
training deep neural networks to predict the parameters from artificially
generated data: the resulting summary statistics are approximately posterior
means of the parameters. With minimal model-specific tuning, our method
constructs summary statistics for the Ising model and the moving-average model,
which match or exceed theoretically-motivated summary statistics in terms of
the accuracies of the resulting posteriors.
|
[{'version': 'v1', 'created': 'Thu, 8 Oct 2015 00:33:51 GMT'}
{'version': 'v2', 'created': 'Tue, 18 Oct 2016 21:20:53 GMT'}
{'version': 'v3', 'created': 'Thu, 16 Mar 2017 04:47:20 GMT'}]
|
2017-03-17
|
[array(['Jiang', 'Bai', ''], dtype=object)
array(['Wu', 'Tung-yu', ''], dtype=object)
array(['Zheng', 'Charles', ''], dtype=object)
array(['Wong', 'Wing H.', ''], dtype=object)]
|
17,105 |
1803.09623
|
Stephan Wagner
|
Valisoa Razanajatovo Misanantenaina and Stephan Wagner
|
A polynomial associated with rooted trees and specific posets
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate a trivariate polynomial associated with rooted trees. It
generalises a bivariate polynomial for rooted trees that was recently
introduced by Liu. We show that this polynomial satisfies a
deletion-contraction recursion and can be expressed as a sum over maximal
antichains. Several combinatorial quantities can be obtained as special values,
in particular the number of antichains, maximal antichains and cutsets. We
prove that two of the three possible bivariate specialisations characterise
trees uniquely up to isomorphism. One of these has already been established by
Liu, the other is new. For the third specialisation, we construct
non-isomorphic trees with the same associated polynomial.
We finally find that our polynomial can be generalised in a natural way to a
family of posets that we call $\mathcal{V}$-posets. These posets are obtained
recursively by either disjoint unions or adding a greatest/least element to
existing $\mathcal{V}$-posets.
|
[{'version': 'v1', 'created': 'Mon, 26 Mar 2018 14:32:46 GMT'}
{'version': 'v2', 'created': 'Tue, 17 Apr 2018 17:25:24 GMT'}
{'version': 'v3', 'created': 'Sun, 13 Feb 2022 14:06:52 GMT'}]
|
2022-02-15
|
[array(['Misanantenaina', 'Valisoa Razanajatovo', ''], dtype=object)
array(['Wagner', 'Stephan', ''], dtype=object)]
|
17,106 |
1405.6557
|
Tommaso Rizzo
|
Tommaso Rizzo
|
Long-wavelength fluctuations lead to a model of the glass crossover
|
Accepted for publication on EPL, based on talk given at 7 IDMRCS
(arxiv:1307.4303)
|
EPL 106 (2014) 56003
|
10.1209/0295-5075/106/56003
| null |
cond-mat.dis-nn cond-mat.soft cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The effect of long wavelength fluctuations on the Mode-Coupling-Theory (MCT)
dynamical singularity at $T_c$ in the $\beta$ regime is studied by means of the
standard field-theoretical procedure for a genuine second-order phase
transition. The resulting perturbative loop expansion can be resummed leading
to an extension of the MCT equation for the critical correlator with local
random fluctuations of the separation parameter. The corresponding model
explains both qualitatively and quantitatively why the MCT dynamical
singularity is transformed into a crossover from relaxational to activated
dynamics. Dynamical Heterogeneities emerge naturally as the
ergodicity-restoring mechanism instead of {\it ad hoc} hopping processes.
|
[{'version': 'v1', 'created': 'Mon, 26 May 2014 12:38:14 GMT'}]
|
2015-06-19
|
[array(['Rizzo', 'Tommaso', ''], dtype=object)]
|
17,107 |
2304.14488
|
Ryosuke Omori
|
Ryosuke Omori, Koichi Ito, Shunsuke Kanemitsu, Ryusuke Kimura and Yoh
Iwasa
|
Human movement decisions during Coronavirus Disease 2019
| null | null | null | null |
physics.soc-ph q-bio.PE
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Modelling host behavioral change in response to epidemics is important to
describe disease dynamics and many previous studies proposed mathematical
models describing it. Indeed, the epidemic of COVID-19 clearly demonstrated
that people changed their activity in response to the epidemic, which
subsequently modified the disease dynamics. To predict the behavioral change
relevant to the disease dynamics, we need to know the epidemic situation (e.g.,
the number of reported cases) at the moment of decision to change behavior.
However, it is difficult to identify the timing of decision-making. In this
study, we analyzed travel accommodation reservation data in four prefectures of
Japan to observe decision-making timings and how it responded to the changing
epidemic situation during Japan's Coronavirus Disease 2019 (eight waves until
February 2023). To this end, we defined 'mobility avoidance index' to indicate
people's decision of mobility avoidance and quantified it using the time-series
of the accommodation booking/cancellation data. Our analysis revealed
semi-quantitative rules for day-to-day decision-making of human mobility under
a given epidemic situation. We observed matches of the peak dates of the index
and the number of reported cases. Additionally, we found that mobility
avoidance index increased/decreased linearly with the logarithmic number of
reported cases during the first epidemic wave. This pattern agrees with
Weber-Fechner law in psychophysics. We also found that the slope of the
mobility avoidance index against the change of the logarithmic number of
reported cases were similar among the waves, while the intercept of that was
much reduced as the first epidemic wave passed by. It suggests that the
people's response became weakened after the first experience, as if the number
of reported cases were multiplied by a constant small factor.
|
[{'version': 'v1', 'created': 'Mon, 24 Apr 2023 03:03:20 GMT'}
{'version': 'v2', 'created': 'Wed, 24 May 2023 00:54:47 GMT'}]
|
2023-05-25
|
[array(['Omori', 'Ryosuke', ''], dtype=object)
array(['Ito', 'Koichi', ''], dtype=object)
array(['Kanemitsu', 'Shunsuke', ''], dtype=object)
array(['Kimura', 'Ryusuke', ''], dtype=object)
array(['Iwasa', 'Yoh', ''], dtype=object)]
|
17,108 |
2010.02950
|
Jorge Russo
|
Jorge G. Russo
|
Phases of unitary matrix models and lattice QCD2
|
19 pages
| null |
10.1103/PhysRevD.102.105019
|
ICCUB-20-022
|
hep-th cond-mat.stat-mech hep-lat
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the different large $N$ phases of a generalized
Gross-Witten-Wadia $U(N)$ matrix model. The deformation mimics the one-loop
determinant of fermion matter with a particular coupling to gauge fields. In
one version of the model, the GWW phase transition is smoothed out and it
becomes a crossover. In another version, the phase transition occurs along a
critical line in the two-dimensional parameter space spanned by the 't~Hooft
coupling $\lambda$ and the Veneziano parameter $\tau$. We compute the
expectation value of Wilson loops in both phases, showing that the transition
is third-order. A calculation of the $\beta $ function shows the existence of
an IR stable fixed point.
|
[{'version': 'v1', 'created': 'Tue, 6 Oct 2020 18:01:05 GMT'}]
|
2020-12-30
|
[array(['Russo', 'Jorge G.', ''], dtype=object)]
|
17,109 |
2212.00769
|
Maya Stein
|
Maya Stein and Camila Z\'arate-Guer\'en
|
Antidirected subgraphs of oriented graphs
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that for every $\eta > 0$ every sufficiently large $n$-vertex
oriented graph D of minimum semidegree exceeding $(1 + \eta) k/2$ contains
every balanced antidirected tree with $k$ edges and bounded maximum degree, if
$k \ge \eta n$. In particular, this asymptotically confirms a conjecture of the
first author for long antidirected paths.
Further, we show that in the same setting, D contains every $k$-edge
antidirected subdivision of a sufficiently small complete graph, if the paths
of the subdivision that have length 1 or 2 span a forest. As a special case, we
can find all antidirected cycles of length at most k.
Finally, we address a conjecture of Addario-Berry, Havet, Linhares Sales,
Reed and Thomass\'e for antidirected trees in digraphs. We show that this
conjecture is asymptotically true in $n$-vertex oriented graphs for all
balanced antidirected trees of bounded maximum degree and of size linear in
$n$.
|
[{'version': 'v1', 'created': 'Thu, 1 Dec 2022 18:53:19 GMT'}]
|
2022-12-02
|
[array(['Stein', 'Maya', ''], dtype=object)
array(['Zárate-Guerén', 'Camila', ''], dtype=object)]
|
17,110 |
1907.02382
|
Nick R.D. Zhu
|
Taro Kimura and Rui-Dong Zhu
|
Web Construction of ABCDEFG and Affine Quiver Gauge Theories
|
39+21 pages
|
JHEP09(2019)025
|
10.1007/JHEP09(2019)025
|
DIAS-STP-19-06
|
hep-th math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The topological vertex formalism for 5d $\mathcal{N}=1$ gauge theories is not
only a convenient tool to compute the instanton partition function of these
theories, but it is also accompanied by a nice algebraic structure that reveals
various kinds of nice properties such as dualities and integrability of the
underlying theories. The usual refined topological vertex formalism is derived
for gauge theories with $A$-type quiver structure (and $A$-type gauge groups).
In this article, we propose a construction with a web of vertex operators for
all $ABCDEFG$-type and affine quivers by introducing several new vertices into
the formalism, based on the reproducing of known instanton partition functions
and qq-characters for these theories.
|
[{'version': 'v1', 'created': 'Thu, 4 Jul 2019 12:59:43 GMT'}]
|
2019-09-09
|
[array(['Kimura', 'Taro', ''], dtype=object)
array(['Zhu', 'Rui-Dong', ''], dtype=object)]
|
17,111 |
1111.1907
|
Andrei Khrennikov
|
Andrei Khrennikov
|
Quantum probabilities and violation of CHSH-inequality from classical
random signals and threshold type properly calibrated detectors
|
Finally, the quantum measurement problem is solved, but by going
beyond the standard quantum formalism, via theory of classical random fields
interacting with threshold type detectors. In fact, this is surprising that
the fundamental role of detectors in production of quantum statistics was
practically neglected in works on quantum foundations
| null |
10.1143/PTP.128.31
| null |
quant-ph math-ph math.FA math.MP math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a purely wave model (based on classical random field) which
reproduces quantum probabilities (given by the fundamental law of quantum
mechanics, Born's rule) including probabilities for joint detection of a pair
of quantum observables (e.g., spin or polarization projections). The crucial
point of our approach is that the presence of detector's threshold and
calibration procedure have to be treated not as simply experimental
technicalities, but as the basic counteparts of the theoretical model. The
presence of the background field (vacuum fluctuations) is also the key-element
of our prequantum model. It is of the classical signal type and the methods of
classical signal theory (including statistical radiophysics) are used for its
development. We stress that our prequantum model is not objective, i.e., the
values of observables (clicks of detectors) cannot be assigned in advance,
i.e., before measurement. Hence, the dilemma, nonobjectivity or nonlocality, is
resolved in favor of nonobjectivity (our model is local of the classical field
type). In particular, we reproduce the probabilities for the EPR-experiment for
photon polarization and, hence, violate CHSH inequality for classical random
signals (measured by the threshold type and properly calibrated detectors
acting in the presence of the background field).
|
[{'version': 'v1', 'created': 'Tue, 8 Nov 2011 13:50:24 GMT'}
{'version': 'v2', 'created': 'Sat, 3 Dec 2011 06:26:30 GMT'}]
|
2017-02-01
|
[array(['Khrennikov', 'Andrei', ''], dtype=object)]
|
17,112 |
cond-mat/9710144
|
Enrico Carlon
|
Enrico Carlon (1) and Ferenc Igloi (2,3) ((1) KU Leuven, Belgium, (2)
Research Institute for Solid State Physics, Budapest (3) University of
Szeged)
|
Density Profiles, Casimir Amplitudes and Critical Exponents in the Two
Dimensional Potts Model: A Density Matrix Renormalization Study
|
12 pages, RevTeX, 14 PostScript figures included
|
Phys. Rev. B 57, 7877 (1998)
|
10.1103/PhysRevB.57.7877
|
KUL-TF-97/25
|
cond-mat
| null |
We use the density matrix renormalization group (DMRG) to perform a detailed
study of the critical properties of the two dimensional Q state Potts model,
including the magnetization and energy-density profiles, bulk and surface
critical exponents and the Casimir amplitudes. We apply symmetry breaking
boundary conditions to a $L \times \infty$ strip and diagonalize the
corresponding transfer matrix for a series of moderately large systems ($L \le
64$) by the DMRG method. The numerically very accurate finite lattice results
are then extrapolated by efficient sequence extrapolation techniques. The
critical density profiles and the Casimir amplitudes are found to follow
precisely the conformal predictions for Q=2 and 3. Similarly, the bulk and
surface critical exponents of the models are in very good agreement with the
conformal and exact values: their accuracy has reached or even exceeded the
accuracy of other available numerical methods. For the Q=4 model both the
profiles and the critical exponents show strong logarithmic corrections, which
are also studied.
|
[{'version': 'v1', 'created': 'Wed, 15 Oct 1997 07:36:46 GMT'}]
|
2009-10-30
|
[array(['Carlon', 'Enrico', ''], dtype=object)
array(['Igloi', 'Ferenc', ''], dtype=object)]
|
17,113 |
1709.03187
|
Darren Chitty
|
Darren M. Chitty
|
Applying ACO To Large Scale TSP Instances
| null |
UK Workshop on Computational Intelligence, pp. 104-118. Springer,
Cham, 2017
|
10.1007/978-3-319-66939-7_9
| null |
cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Ant Colony Optimisation (ACO) is a well known metaheuristic that has proven
successful at solving Travelling Salesman Problems (TSP). However, ACO suffers
from two issues; the first is that the technique has significant memory
requirements for storing pheromone levels on edges between cities and second,
the iterative probabilistic nature of choosing which city to visit next at
every step is computationally expensive. This restricts ACO from solving larger
TSP instances. This paper will present a methodology for deploying ACO on
larger TSP instances by removing the high memory requirements, exploiting
parallel CPU hardware and introducing a significant efficiency saving measure.
The approach results in greater accuracy and speed. This enables the proposed
ACO approach to tackle TSP instances of up to 200K cities within reasonable
timescales using a single CPU. Speedups of as much as 1200 fold are achieved by
the technique.
|
[{'version': 'v1', 'created': 'Sun, 10 Sep 2017 22:21:36 GMT'}]
|
2017-09-12
|
[array(['Chitty', 'Darren M.', ''], dtype=object)]
|
17,114 |
1709.04346
|
John LaChapelle
|
J. LaChapelle
|
A non-Standard Standard Model
|
This is an extended version of arXiv:hep-ph/0408266 and
arXiv:hep-ph/0408305
| null | null | null |
physics.gen-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We examine the Standard Model under the electroweak symmetry group
$U_{EW}(2)$ subject to the Lie algebra condition $\mathfrak{u}_{EW}(2)\not\cong
\mathfrak{su}_{I}(2)\oplus \mathfrak{u}_{Y}(1)$. Physically, the condition
ensures that all electroweak gauge bosons interact with each other prior to
symmetry breaking. This represents a crucial shift in the identification of
physical gauge bosons: Unlike the Standard Model which posits a change of Lie
algebra basis induced by spontaneous symmetry breaking, here the basis is
unaltered and $A,\,Z^0,\,W^\pm$ represent the physical bosons both before and
after spontaneous symmetry breaking. Our choice of $\mathfrak{u}_{EW}(2)$
requires some modification of the matter field representation of the Standard
Model. For $U_{EW}(2)$, there are two pertinent representations ${\mathbf{2}}$
and its $U(2)$-conjugate ${\mathbf{2^c}}$ related by a global gauge
transformation that squares to minus the identity. The product group structure
calls for strong-electroweak degrees of freedom in the
$(\mathbf{3},\mathbf{2})$ and the $(\mathbf{3},{\mathbf{2^c}})$ of
$SU_C(3)\times U_{EW}(2)$ that possess integer electric charge just like
leptons. These degrees of freedom play the role of quarks, and they lead to a
modified Lagrangian that nevertheless reproduces transition rates and cross
sections equivalent to the Standard Model. The close resemblance between quark
and lepton electroweak doublets suggests a mechanism for a speculative phase
transition between quarks and leptons that stems from the product structure of
the symmetry group. Our hypothesis is that the strong and electroweak bosons
see each other as a source of decoherence. In effect, lepton representations
get identified with the $SU(3)$-trace-reduced quark representations. This
mechanism allows for possible extensions of the Standard Model that don't
require large inclusive multiplets of matter fields.
|
[{'version': 'v1', 'created': 'Thu, 7 Sep 2017 17:51:48 GMT'}
{'version': 'v2', 'created': 'Sat, 21 Oct 2017 01:33:10 GMT'}
{'version': 'v3', 'created': 'Wed, 17 Jan 2018 19:43:06 GMT'}
{'version': 'v4', 'created': 'Wed, 7 Mar 2018 18:01:45 GMT'}
{'version': 'v5', 'created': 'Fri, 15 Jun 2018 17:52:18 GMT'}
{'version': 'v6', 'created': 'Fri, 13 Dec 2019 23:38:29 GMT'}
{'version': 'v7', 'created': 'Tue, 29 Mar 2022 20:56:41 GMT'}
{'version': 'v8', 'created': 'Tue, 14 Jun 2022 14:41:02 GMT'}]
|
2022-06-15
|
[array(['LaChapelle', 'J.', ''], dtype=object)]
|
17,115 |
2203.07443
|
Giuliano Giudici
|
Giuliano Giudici, J. Ignacio Cirac, Norbert Schuch
|
Locality optimization for parent Hamiltonians of Tensor Networks
| null |
Phys. Rev. B 106, 035109 (2022)
|
10.1103/PhysRevB.106.035109
| null |
cond-mat.str-el quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Tensor Network states form a powerful framework for both the analytical and
numerical study of strongly correlated phases. Vital to their analytical
utility is that they appear as the exact ground states of associated parent
Hamiltonians, where canonical proof techniques guarantee a controlled ground
space structure. Yet, while those Hamiltonians are local by construction, the
known techniques often yield complex Hamiltonians which act on a rather large
number of spins. In this paper, we present an algorithm to systematically
simplify parent Hamiltonians, breaking them down into any given basis of
elementary interaction terms. The underlying optimization problem is a
semidefinite program, and thus the optimal solution can be found efficiently.
Our method exploits a degree of freedom in the construction of parent
Hamiltonians -- the excitation spectrum of the local terms -- over which it
optimizes such as to obtain the best possible approximation. We benchmark our
method on the AKLT model and the Toric Code model, where we show that the
canonical parent Hamiltonians (acting on 3 or 4 and 12 sites, respectively) can
be broken down to the known optimal 2-body and 4-body terms. We then apply our
method to the paradigmatic Resonating Valence Bond (RVB) model on the kagome
lattice. Here, the simplest previously known parent Hamiltonian acts on all the
12 spins on one kagome star. With our optimization algorithm, we obtain a
vastly simpler Hamiltonian: We find that the RVB model is the exact ground
state of a parent Hamiltonian whose terms are all products of at most four
Heisenberg interactions, and whose range can be further constrained, providing
a major improvement over the previously known 12-body Hamiltonian.
|
[{'version': 'v1', 'created': 'Mon, 14 Mar 2022 19:01:07 GMT'}]
|
2022-07-12
|
[array(['Giudici', 'Giuliano', ''], dtype=object)
array(['Cirac', 'J. Ignacio', ''], dtype=object)
array(['Schuch', 'Norbert', ''], dtype=object)]
|
17,116 |
2004.06821
|
Ariel Cintron-Arias
|
Ariel Cintr\'on-Arias, Fabio S\'anchez, Xiaohong Wang, Carlos
Castillo-Chavez, Dennis M. Gorman, Paul J. Gruenewald
|
The Role of Nonlinear Relapse on Contagion Amongst Drinking Communities
| null | null | null | null |
q-bio.PE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Relapse, the recurrence of a disorder following a symptomatic remission, is a
frequent outcome in substance abuse disorders. Some of our prior results
suggested that relapse, in the context of abusive drinking, is likely an
"unbeatable" force as long as recovered individuals continue to interact in the
environments that lead to and/or reinforce the persistence of abusive drinking
behaviors. Our earlier results were obtained via a deterministic model that
ignored differences between individuals, that is, in a rather simple "social"
setting. In this paper, we address the role of relapse on drinking dynamics but
use models that incorporate the role of "chance", or a high degree of "social"
heterogeneity, or both. Our focus is primarily on situations where relapse
rates are high. We first use a Markov chain model to simulate the effect of
relapse on drinking dynamics. These simulations reinforce the conclusions
obtained before, with the usual caveats that arise when the outcomes of
deterministic and stochastic models are compared. However, the simulation
results generated from stochastic realizations of an "equivalent" drinking
process in populations "living" in small world networks, parameterized via a
disorder parameter $p$, show that there is no social structure within this
family capable of reducing the impact of high relapse rates on drinking
prevalence, even if we drastically limit the interactions between individuals
($p\approx 0$).
|
[{'version': 'v1', 'created': 'Tue, 14 Apr 2020 22:30:00 GMT'}]
|
2020-04-16
|
[array(['Cintrón-Arias', 'Ariel', ''], dtype=object)
array(['Sánchez', 'Fabio', ''], dtype=object)
array(['Wang', 'Xiaohong', ''], dtype=object)
array(['Castillo-Chavez', 'Carlos', ''], dtype=object)
array(['Gorman', 'Dennis M.', ''], dtype=object)
array(['Gruenewald', 'Paul J.', ''], dtype=object)]
|
17,117 |
1201.4181
|
Eleonora Troja
|
E. Troja, T. Sakamoto, C. Guidorzi, J. P. Norris, A. Panaitescu, S.
Kobayashi, N. Omodei, J. C. Brown, D. N. Burrows, P. A. Evans, N. Gehrels, F.
E. Marshall, N. Mawson, A. Melandri, C. G. Mundell, S. R. Oates, V. Pal'shin,
R. D. Preece, J. L. Racusin, I. A. Steele, N. R. Tanvir, V. Vasileiou, C.
Wilson-Hodge, K. Yamaoka
|
Broadband study of GRB 091127: a sub-energetic burst at higher redshift?
|
12 pages, 7 figures, submitted to ApJ
| null |
10.1088/0004-637X/761/1/50
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
GRB 091127 is a bright gamma-ray burst (GRB) detected by Swift at a redshift
z=0.49 and associated with SN 2009nz. We present the broadband analysis of the
GRB prompt and afterglow emission and study its high-energy properties in the
context of the GRB/SN association. While the high luminosity of the prompt
emission and standard afterglow behavior are typical of cosmological long GRBs,
its low energy release, soft spectrum and unusual spectral lag connect this GRB
to the class of sub-energetic bursts. We discuss the suppression of high-energy
emission in this burst, and investigate whether this behavior could be
connected with the sub-energetic nature of the explosion.
|
[{'version': 'v1', 'created': 'Thu, 19 Jan 2012 21:34:03 GMT'}]
|
2015-06-03
|
[array(['Troja', 'E.', ''], dtype=object)
array(['Sakamoto', 'T.', ''], dtype=object)
array(['Guidorzi', 'C.', ''], dtype=object)
array(['Norris', 'J. P.', ''], dtype=object)
array(['Panaitescu', 'A.', ''], dtype=object)
array(['Kobayashi', 'S.', ''], dtype=object)
array(['Omodei', 'N.', ''], dtype=object)
array(['Brown', 'J. C.', ''], dtype=object)
array(['Burrows', 'D. N.', ''], dtype=object)
array(['Evans', 'P. A.', ''], dtype=object)
array(['Gehrels', 'N.', ''], dtype=object)
array(['Marshall', 'F. E.', ''], dtype=object)
array(['Mawson', 'N.', ''], dtype=object)
array(['Melandri', 'A.', ''], dtype=object)
array(['Mundell', 'C. G.', ''], dtype=object)
array(['Oates', 'S. R.', ''], dtype=object)
array(["Pal'shin", 'V.', ''], dtype=object)
array(['Preece', 'R. D.', ''], dtype=object)
array(['Racusin', 'J. L.', ''], dtype=object)
array(['Steele', 'I. A.', ''], dtype=object)
array(['Tanvir', 'N. R.', ''], dtype=object)
array(['Vasileiou', 'V.', ''], dtype=object)
array(['Wilson-Hodge', 'C.', ''], dtype=object)
array(['Yamaoka', 'K.', ''], dtype=object)]
|
17,118 |
hep-ph/0309032
|
Fernand Renard M.
|
G.J. Gounaris, J. Layssac, P.I. Porfyriadis and F.M. Renard
|
Neutralino-neutralino annihilation to photon and gluon pairs in MSSM
models
|
14 pages and 1 figure; version to appear in Phys. Rev.D; Title
slightly changed
|
Phys.Rev.D69:075007,2004
|
10.1103/PhysRevD.69.075007
|
PM/03-18, THES-TP 2003/03
|
hep-ph
| null |
The complete 1-loop computation of the processes $(\tchi^0_i \tchi^0_j
\leftrightarrow\gamma\gamma, ~ gg)$, for any pair of the four MSSM neutralinos,
has been performed for an arbitrary c.m energy. As a first application suitable
for Dark Matter (DM) searches, the neutralino-neutralino annihilation is
studied at relative velocities $v/c\simeq 10^{-3}$ describing the present DM
distribution in the galactic halo, and $v/c\simeq 0.5$ determining neutralino
relic density contributions. Numerical results are presented for 31 MSSM
benchmark models indicating considerable sensitivity to the input parameters.
Numerical codes are released, which may be used for the computation of the
annihilation of any two neutralinos to two photons or two gluons at the
aforementioned $v/c$ values. In the near future, we intend to complement them
with codes for the inverse process $\gamma\gamma \to \tchi^0_i \tchi^0_j$,
observable at the future high energy Linear Colliders.
|
[{'version': 'v1', 'created': 'Wed, 3 Sep 2003 07:02:59 GMT'}
{'version': 'v2', 'created': 'Fri, 7 Nov 2003 08:58:33 GMT'}
{'version': 'v3', 'created': 'Fri, 16 Jan 2004 08:20:35 GMT'}]
|
2011-07-19
|
[array(['Gounaris', 'G. J.', ''], dtype=object)
array(['Layssac', 'J.', ''], dtype=object)
array(['Porfyriadis', 'P. I.', ''], dtype=object)
array(['Renard', 'F. M.', ''], dtype=object)]
|
17,119 |
2003.04399
|
Alexander Ivanov
|
Alexander B. Ivanov
|
Arc-descent for the perfect loop functor and $p$-adic Deligne--Lusztig
spaces
|
45pages; v3; title changed; introduction rewritten completely; Remark
3.2 added; Proposition 11.9 strengthened; bibiliography updated; minor format
changes
| null | null | null |
math.AG math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that the perfect loop functor $LX$ of a quasi-projective scheme $X$
over a local non-archimedean field $k$ satisfies arc-descent, strengthening a
result of Drinfeld. Then we prove that for an unramified reductive group $G$,
the map $LG \rightarrow L(G/B)$ is a $v$-surjection. This gives a mixed
characteristic version (for $v$-topology) of an equal characteristic result (in
\'etale topology) of Bouthier--\v{C}esnavi\v{c}ius.
In the second part of the article, we use the above results to introduce a
well-behaved notion of Deligne--Lusztig spaces $X_w(b)$ attached to unramified
$p$-adic reductive groups. We show that in various cases these sheaves are
ind-representable, thus partially solving a question of Boyarchenko. Finally,
we show that the natural covering spaces $\dot X_{\dot w}(b)$ are pro-\'etale
torsors over clopen subsets of $X_w(b)$, and analyze some examples.
|
[{'version': 'v1', 'created': 'Mon, 9 Mar 2020 20:27:16 GMT'}
{'version': 'v2', 'created': 'Fri, 25 Sep 2020 13:49:00 GMT'}
{'version': 'v3', 'created': 'Fri, 3 Sep 2021 10:35:51 GMT'}]
|
2021-09-06
|
[array(['Ivanov', 'Alexander B.', ''], dtype=object)]
|
17,120 |
math/0210009
|
Martin Sombra
|
Gabriela Jeronimo, Teresa Krick, Juan Sabia, and Martin Sombra
|
The computational complexity of the Chow form
|
60 pages, Latex2e
| null | null | null |
math.AG math.AC
| null |
We present a bounded probability algorithm for the computation of the Chow
forms of the equidimensional components of an algebraic variety. Its complexity
is polynomial in the length and in the geometric degree of the input equation
system defining the variety. In particular, it provides an alternative
algorithm for the equidimensional decomposition of a variety.
As an application we obtain an algorithm for the computation of a subclass of
sparse resultants, whose complexity is polynomial in the dimension and the
volume of the input set of exponents. As a further application, we derive an
algorithm for the computation of the (unique) solution of a generic
over-determined equation system.
|
[{'version': 'v1', 'created': 'Tue, 1 Oct 2002 14:36:10 GMT'}]
|
2007-05-23
|
[array(['Jeronimo', 'Gabriela', ''], dtype=object)
array(['Krick', 'Teresa', ''], dtype=object)
array(['Sabia', 'Juan', ''], dtype=object)
array(['Sombra', 'Martin', ''], dtype=object)]
|
17,121 |
math/0508187
|
Joshua M. Sabloff
|
Joshua M Sabloff
|
Duality for Legendrian contact homology
|
This is the version published by Geometry & Topology on 8 December
2006
|
Geom. Topol. 10 (2006) 2351-2381
|
10.2140/gt.2006.10.2351
| null |
math.SG math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The main result of this paper is that, off of a `fundamental class' in degree
1, the linearized Legendrian contact homology obeys a version of Poincare
duality between homology groups in degrees k and -k. Not only does the result
itself simplify calculations, but its proof also establishes a framework for
analyzing cohomology operations on the linearized Legendrian contact homology.
|
[{'version': 'v1', 'created': 'Wed, 10 Aug 2005 18:25:23 GMT'}
{'version': 'v2', 'created': 'Tue, 6 Sep 2005 20:03:04 GMT'}
{'version': 'v3', 'created': 'Mon, 17 Oct 2005 18:47:34 GMT'}
{'version': 'v4', 'created': 'Mon, 2 Mar 2009 20:52:01 GMT'}]
|
2009-03-02
|
[array(['Sabloff', 'Joshua M', ''], dtype=object)]
|
17,122 |
1606.03154
|
Sen-Yue Lou
|
S. Y. Lou and F. Huang
|
Alice-Bob Physics: Coherent Solutions of Nonlocal KdV Systems
|
14 pages, 4 figure
|
Scientific Reports 7, Article number: 869 (2017)
|
10.1038/s41598-017-00844-y
| null |
nlin.SI math-ph math.MP physics.class-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In natural and social science, many events happened at different space-times
may be closely correlated. Two events, $A$ (Alice) and $B$ (Bob) are defined
correlated if one event is determined by another, say, $B=\hat{f}A$ for
suitable $\hat{f}$ operators. Taking KdV and coupled KdV systems as examples,
we can find some types of models (AB-KdV systems) to exhibit the existence on
the correlated solutions linked with two events. The idea of this report is
valid not only for physical problems related to KdV systems but also for
problems described by arbitrary continuous or discrete models. The parity and
time reversal symmetries are extended to shifted parity and delayed time
reversal. The new symmetries are found to be useful not only to establish
AB-systems but also to find group invariant solutions of numerous AB-systems. A
new elegant form of the $N$-soliton solutions of the KdV equation and then the
AB-KdV systems is obtained. A concrete AB-KdV system derived from the nonlinear
inviscid dissipative and barotropic vorticity equation in a $\beta$-plane
channel is applied to the two correlated monople blocking events which is
responsible for the snow disaster in the winter of 2007/2008 happened in
Southern China.
|
[{'version': 'v1', 'created': 'Fri, 10 Jun 2016 01:33:52 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Feb 2017 08:26:31 GMT'}]
|
2017-04-18
|
[array(['Lou', 'S. Y.', ''], dtype=object)
array(['Huang', 'F.', ''], dtype=object)]
|
17,123 |
math/0306225
|
Nevin Kapur
|
James Allen Fill, Philippe Flajolet, and Nevin Kapur
|
Singularity analysis, Hadamard products, and tree recurrences
|
47 pages. Submitted for publication
|
J. Comput. Appl. Math. 174 (2005) 271-313
|
10.1016/j.cam.2004.04.014
| null |
math.CO math.PR
| null |
We present a toolbox for extracting asymptotic information on the
coefficients of combinatorial generating functions. This toolbox notably
includes a treatment of the effect of Hadamard products on singularities in the
context of the complex Tauberian technique known as singularity analysis. As a
consequence, it becomes possible to unify the analysis of a number of
divide-and-conquer algorithms, or equivalently random tree models, including
several classical methods for sorting, searching, and dynamically managing
equivalence relations
|
[{'version': 'v1', 'created': 'Fri, 13 Jun 2003 18:00:59 GMT'}]
|
2007-05-23
|
[array(['Fill', 'James Allen', ''], dtype=object)
array(['Flajolet', 'Philippe', ''], dtype=object)
array(['Kapur', 'Nevin', ''], dtype=object)]
|
17,124 |
2111.07716
|
Xiangfeng Wang
|
Wenhao Li and Qisen Xu and Chuyun Shen and Bin Hu and Fengping Zhu and
Yuxin Li and Bo Jin and Xiangfeng Wang
|
Interactive Medical Image Segmentation with Self-Adaptive Confidence
Calibration
| null | null | null | null |
cs.CV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Medical image segmentation is one of the fundamental problems for artificial
intelligence-based clinical decision systems. Current automatic medical image
segmentation methods are often failed to meet clinical requirements. As such, a
series of interactive segmentation algorithms are proposed to utilize expert
correction information. However, existing methods suffer from some segmentation
refining failure problems after long-term interactions and some cost problems
from expert annotation, which hinder clinical applications. This paper proposes
an interactive segmentation framework, called interactive MEdical segmentation
with self-adaptive Confidence CAlibration (MECCA), by introducing the
corrective action evaluation, which combines the action-based confidence
learning and multi-agent reinforcement learning (MARL). The evaluation is
established through a novel action-based confidence network, and the corrective
actions are obtained from MARL. Based on the confidential information, a
self-adaptive reward function is designed to provide more detailed feedback,
and a simulated label generation mechanism is proposed on unsupervised data to
reduce over-reliance on labeled data. Experimental results on various medical
image datasets have shown the significant performance of the proposed
algorithm.
|
[{'version': 'v1', 'created': 'Mon, 15 Nov 2021 12:38:56 GMT'}]
|
2021-11-16
|
[array(['Li', 'Wenhao', ''], dtype=object)
array(['Xu', 'Qisen', ''], dtype=object)
array(['Shen', 'Chuyun', ''], dtype=object)
array(['Hu', 'Bin', ''], dtype=object)
array(['Zhu', 'Fengping', ''], dtype=object)
array(['Li', 'Yuxin', ''], dtype=object)
array(['Jin', 'Bo', ''], dtype=object)
array(['Wang', 'Xiangfeng', ''], dtype=object)]
|
17,125 |
2103.04121
|
Myounggyu Won
|
Pradeep Sambu and Myounggyu Won
|
An Experimental Study on Direction Finding of Bluetooth 5.1: Indoor vs
Outdoor
| null | null | null | null |
cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Bluetooth Special Interest Group (Bluetooth SIG) introduced a new feature
for highly accurate localization called the Direction Finding in the Bluetooth
Core Specification 5.1. Since this new localization feature is relatively new,
despite the significant interest of industry and academia in the accurate
positioning of Bluetooth devices/tags, there are only a handful of experimental
studies conducted to evaluate the performance of the new technology.
Furthermore, these experimental works are constrained to only indoor
environments or performed with hardware emulation of Bluetooth 5.1 via
Universal Software Radio Peripherals (USRPs). In this paper, we perform an
experimental study on the positioning accuracy of the direction finding using
COTS Bluetooth 5.1 devices in booth indoor and outdoor environments to provide
insights on the performance gap under these different experimental settings.
Our results demonstrate that the average angular error in an outdoor
environment is 0.28 degrees, significantly improving the angular error measured
in an indoor environment by 73%. It is also demonstrated that the average
positioning accuracy measured in an outdoor environment is 22cm which is 39.7%
smaller than that measured in an indoor environment.
|
[{'version': 'v1', 'created': 'Sat, 6 Mar 2021 14:34:10 GMT'}]
|
2021-03-09
|
[array(['Sambu', 'Pradeep', ''], dtype=object)
array(['Won', 'Myounggyu', ''], dtype=object)]
|
17,126 |
2205.10795
|
Kazushi Kanoda
|
Hideaki Murase, Shunto Arai, Takuro Sato, Kazuya Miyagawa, Hatsumi
Mori, Tatsuo Hasegawa, and Kazushi Kanoda
|
Observation of classical to quantum crossover in electron glass
|
33 pages including 13 figures
| null | null | null |
cond-mat.str-el cond-mat.soft
|
http://creativecommons.org/licenses/by/4.0/
|
Glass, a ubiquitous state of matter like a frozen liquid, is a seminal issue
across fundamental and applied sciences and has long been investigated in the
framework of classical mechanics. A challenge in glass physics is the
exploration of the quantum-mechanical behaviour of glass. Experimentally,
however, the real quantum manifestation of glass and the relationship between
classical and quantum glass are totally unknown and remain to be observed in
real systems. Here, we report the direct observation of classical-to-quantum
evolution in the frustration-induced charge glass state exhibited by
interacting electrons in organic materials. We employ Raman spectroscopy to
capture a snapshot of the charge density distribution of each molecule in a
series of charge glasses formed on triangular lattices with different
geometrical frustrations. In less frustrated glass, the charge density profile
exhibits a particle-like two-valued distribution; however, it becomes
continuous and narrowed with increasing frustration, demonstrating the
classical-to-quantum crossover. Moreover, the charge density distribution shows
contrasting temperature evolution in classical and quantum glasses, enabling us
to delineate energy landscapes with distinct features. The present result is
the first to experimentally identify the quantum charge glass and show how it
emerges from classical glass.
|
[{'version': 'v1', 'created': 'Sun, 22 May 2022 10:43:42 GMT'}]
|
2022-05-24
|
[array(['Murase', 'Hideaki', ''], dtype=object)
array(['Arai', 'Shunto', ''], dtype=object)
array(['Sato', 'Takuro', ''], dtype=object)
array(['Miyagawa', 'Kazuya', ''], dtype=object)
array(['Mori', 'Hatsumi', ''], dtype=object)
array(['Hasegawa', 'Tatsuo', ''], dtype=object)
array(['Kanoda', 'Kazushi', ''], dtype=object)]
|
17,127 |
2009.00540
|
Prasanna Date
|
Prasanna Date, Christopher D. Carothers, John E. Mitchell, James A.
Hendler, Malik Magdon-Ismail
|
Training Deep Neural Networks with Constrained Learning Parameters
| null | null |
10.1109/ICRC2020.2020.00018
| null |
cs.LG cs.CV stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Today's deep learning models are primarily trained on CPUs and GPUs. Although
these models tend to have low error, they consume high power and utilize large
amount of memory owing to double precision floating point learning parameters.
Beyond the Moore's law, a significant portion of deep learning tasks would run
on edge computing systems, which will form an indispensable part of the entire
computation fabric. Subsequently, training deep learning models for such
systems will have to be tailored and adopted to generate models that have the
following desirable characteristics: low error, low memory, and low power. We
believe that deep neural networks (DNNs), where learning parameters are
constrained to have a set of finite discrete values, running on neuromorphic
computing systems would be instrumental for intelligent edge computing systems
having these desirable characteristics. To this extent, we propose the
Combinatorial Neural Network Training Algorithm (CoNNTrA), that leverages a
coordinate gradient descent-based approach for training deep learning models
with finite discrete learning parameters. Next, we elaborate on the theoretical
underpinnings and evaluate the computational complexity of CoNNTrA. As a proof
of concept, we use CoNNTrA to train deep learning models with ternary learning
parameters on the MNIST, Iris and ImageNet data sets and compare their
performance to the same models trained using Backpropagation. We use following
performance metrics for the comparison: (i) Training error; (ii) Validation
error; (iii) Memory usage; and (iv) Training time. Our results indicate that
CoNNTrA models use 32x less memory and have errors at par with the
Backpropagation models.
|
[{'version': 'v1', 'created': 'Tue, 1 Sep 2020 16:20:11 GMT'}]
|
2021-11-16
|
[array(['Date', 'Prasanna', ''], dtype=object)
array(['Carothers', 'Christopher D.', ''], dtype=object)
array(['Mitchell', 'John E.', ''], dtype=object)
array(['Hendler', 'James A.', ''], dtype=object)
array(['Magdon-Ismail', 'Malik', ''], dtype=object)]
|
17,128 |
1210.6494
|
Vasiliy Usatyk
|
Vasiliy Usatyuk
|
Short review of lattice basis reduction types and his applications
(Russian)
| null | null | null | null |
cs.DM math.GR
|
http://creativecommons.org/licenses/by/3.0/
|
This article presets a review of lattice lattice basis reduction types. Paper
contains the main five types of lattice basis reduction: size reduced (weak
Hermit), c-reduced, Lovasz condition, Hermit-Korkin-Zolotarev, Minkowski
reduced. The article provides references to applications in: information theory
(decoding of coding group in MIMO), calculus (minimize of the positive
quadratic form), complexity theory and cryptanalysis of Merkle-Hellman
cryptography (solving subset sum problems), algebra and control theory(solving
system of linear diophantine equation), compiler theory (lattice based memory
allocation), synthesize cryptographic and cryptanalysis in lattice based
cryptography.
|
[{'version': 'v1', 'created': 'Wed, 24 Oct 2012 11:38:58 GMT'}
{'version': 'v2', 'created': 'Sat, 10 Nov 2012 04:59:14 GMT'}]
|
2012-11-13
|
[array(['Usatyuk', 'Vasiliy', ''], dtype=object)]
|
17,129 |
quant-ph/0603216
|
Jean-Claude Garreau
|
Julien Chab\'e (PhLAM, CERLA), Hans Lignier (PhLAM, CERLA), Pascal
Szriftgiser (PhLAM, CERLA), Jean Claude Garreau (PhLAM, CERLA)
|
Improving Raman velocimetry of laser-cooled cesium atoms by
spin-polarization
|
12 pages, 6 figures, Elsevier style, to appear in Opt. Commun
|
Optics Communications 274, 1 (01/06/2007) 254-259
|
10.1016/j.optcom.2007.02.008
| null |
quant-ph cond-mat.other physics.atom-ph physics.optics
| null |
We study the peformances of Raman velocimetry applied to laser-cooled,
spin-polarized, cesium atoms. Atoms are optically pumped into the F=4, m=0
ground-state Zeeman sublevel, which is insensitive to magnetic perturbations.
High resolution Raman stimulated spectroscopy is shown to produce
Fourier-limited lines, allowing, in realistic experimental conditions, atomic
velocity selection to one-fiftieth of a recoil velocity.
|
[{'version': 'v1', 'created': 'Thu, 23 Mar 2006 18:34:06 GMT'}
{'version': 'v2', 'created': 'Sun, 4 Feb 2007 17:49:16 GMT'}]
|
2016-08-16
|
[array(['Chabé', 'Julien', '', 'PhLAM, CERLA'], dtype=object)
array(['Lignier', 'Hans', '', 'PhLAM, CERLA'], dtype=object)
array(['Szriftgiser', 'Pascal', '', 'PhLAM, CERLA'], dtype=object)
array(['Garreau', 'Jean Claude', '', 'PhLAM, CERLA'], dtype=object)]
|
17,130 |
1006.2279
|
Andrey Chugunov Mr.
|
A.I. Chugunov, C.J. Horowitz
|
Breaking stress of neutron star crust
|
5 pages, 2 figures. Accepted for publication in MNRAS Letters
|
Mon. Not. Roy. Astron. Soc.: Letters, 407, L54-L58 (2010)
|
10.1111/j.1745-3933.2010.00903.x
| null |
astro-ph.SR physics.plasm-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The breaking stress (the maximum of the stress-strain curve) of neutron star
crust is important for neutron star physics including pulsar glitches, emission
of gravitational waves from static mountains, and flares from star quakes. We
perform many molecular dynamic simulations of the breaking stress at different
coupling parameters (inverse temperatures) and strain rates. We describe our
results with the Zhurkov model of strength. We apply this model to estimate the
breaking stress for timescales ~1 s - 1 year, which are most important for
applications, but much longer than can be directly simulated. At these
timescales the breaking stress depends strongly on the temperature. For
coupling parameter <200, matter breaks at very small stress, if it is applied
for a few years. This viscoelastic creep can limit the lifetime of mountains on
neutron stars. We also suggest an alternative model of timescale-independent
breaking stress, which can be used to estimate an upper limit on the breaking
stress.
|
[{'version': 'v1', 'created': 'Fri, 11 Jun 2010 12:28:17 GMT'}]
|
2011-08-17
|
[array(['Chugunov', 'A. I.', ''], dtype=object)
array(['Horowitz', 'C. J.', ''], dtype=object)]
|
17,131 |
astro-ph/0004027
|
Mark Dickinson
|
Mark Dickinson (STScI)
|
Galaxy Evolution at 0 < z < 2 from the NICMOS HDF-North
|
To appear in "Building Galaxies: From the Primordial Universe to the
Present," proceedings of the XIXth Moriond Astrophysics Meeting (March 1999),
eds. F. Hammer, T.X. Thuan, V. Cayatte, B. Guiderdoni, & J. Tranh Than Van,
(Paris:Ed. Frontieres), p. 257. 12 pages with 5 encapsulated postscript
figures. Latex, moriond.sty file included
| null | null | null |
astro-ph
| null |
We have carried out a deep infrared imaging survey (1.1um and 1.6um) of the
Hubble Deep Field North (HDF-N) using NICMOS on board the Hubble Space
Telescope. The combined WFPC2+NICMOS data set lets us study galaxy
morphologies, colors and luminosities at common rest frame wavelengths over a
broad range of redshifts, e.g., in the V-band out to z=2. Here, I illustrate
some applications of this data set for studying the evolution of giant
galaxies, on and off the Hubble Sequence. Large, relatively ordinary spiral
galaxies are found out to at least z=~1.25. Morphological irregularities seen
in many distant HDF galaxies tend to persist from ultraviolet through optical
rest frame wavelengths, suggesting that these are genuinely peculiar,
structurally disturbed systems. Red giant ellipticals are found out to
(photometric) redshifts z=~1.8, implying that some such galaxies probably
formed the bulk of their stars at z_f>~4. However, there are also bluer early
type galaxies at z>0.5, which may have experienced extended star formation
histories. Finally, there appears to be a substantial deficit of high
luminosity galaxies of all types at 1.4<~z<2 compared to lower redshifts.
However, this result must be considered with caution given the small volume of
the HDF, its susceptibility to line-of-sight clustering variations, and the
heavy reliance on photometric redshifts at z>~1.4.
|
[{'version': 'v1', 'created': 'Mon, 3 Apr 2000 23:09:49 GMT'}]
|
2007-05-23
|
[array(['Dickinson', 'Mark', '', 'STScI'], dtype=object)]
|
17,132 |
1705.03408
|
Wellington Galleas
|
W. Galleas
|
Six-vertex model and non-linear differential equations I. Spectral
problem
|
42 pages, 3 figures
|
Commun. Math. Phys. (2018)
|
10.1007/s00220-018-3232-7
| null |
math-ph math.MP nlin.SI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work we relate the spectral problem of the toroidal six-vertex
model's transfer matrix with the theory of integrable non-linear differential
equations. More precisely, we establish an analogy between the Classical
Inverse Scattering Method and previously proposed functional equations
originating from the Yang-Baxter algebra. The latter equations are then
regarded as an Auxiliary Linear Problem allowing us to show that the six-vertex
model's spectrum solves Riccati-type non-linear differential equations.
Generating functions of conserved quantities are expressed in terms of
determinants and we also discuss a relation between our Riccati equations and a
stationary Schr\"odinger equation.
|
[{'version': 'v1', 'created': 'Tue, 9 May 2017 16:17:12 GMT'}]
|
2018-08-30
|
[array(['Galleas', 'W.', ''], dtype=object)]
|
17,133 |
1909.05361
|
Xiang Gao
|
Xiang Gao, Yizhe Zhang, Sungjin Lee, Michel Galley, Chris Brockett,
Jianfeng Gao, Bill Dolan
|
Structuring Latent Spaces for Stylized Response Generation
|
accepted to appear at EMNLP 2019 (long)
|
EMNLP 2019
| null | null |
cs.CL cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Generating responses in a targeted style is a useful yet challenging task,
especially in the absence of parallel data. With limited data, existing methods
tend to generate responses that are either less stylized or less
context-relevant. We propose StyleFusion, which bridges conversation modeling
and non-parallel style transfer by sharing a structured latent space. This
structure allows the system to generate stylized relevant responses by sampling
in the neighborhood of the conversation model prediction, and continuously
control the style level. We demonstrate this method using dialogues from Reddit
data and two sets of sentences with distinct styles (arXiv and Sherlock Holmes
novels). Automatic and human evaluation show that, without sacrificing
appropriateness, the system generates responses of the targeted style and
outperforms competitive baselines.
|
[{'version': 'v1', 'created': 'Tue, 3 Sep 2019 18:11:58 GMT'}]
|
2019-09-13
|
[array(['Gao', 'Xiang', ''], dtype=object)
array(['Zhang', 'Yizhe', ''], dtype=object)
array(['Lee', 'Sungjin', ''], dtype=object)
array(['Galley', 'Michel', ''], dtype=object)
array(['Brockett', 'Chris', ''], dtype=object)
array(['Gao', 'Jianfeng', ''], dtype=object)
array(['Dolan', 'Bill', ''], dtype=object)]
|
17,134 |
1304.1095
|
Ingo Beinlich
|
Ingo Beinlich, Edward H. Herskovits
|
Ergo: A Graphical Environment for Constructing Bayesian
|
Appears in Proceedings of the Sixth Conference on Uncertainty in
Artificial Intelligence (UAI1990)
| null | null |
UAI-P-1990-PG-114-121
|
cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We describe an environment that considerably simplifies the process of
generating Bayesian belief networks. The system has been implemented on readily
available, inexpensive hardware, and provides clarity and high performance. We
present an introduction to Bayesian belief networks, discuss algorithms for
inference with these networks, and delineate the classes of problems that can
be solved with this paradigm. We then describe the hardware and software that
constitute the system, and illustrate Ergo's use with several example
|
[{'version': 'v1', 'created': 'Wed, 27 Mar 2013 13:55:48 GMT'}]
|
2013-04-05
|
[array(['Beinlich', 'Ingo', ''], dtype=object)
array(['Herskovits', 'Edward H.', ''], dtype=object)]
|
17,135 |
2203.12687
|
Hyesun Choung
|
Hyesun Choung, Prabu David, Arun Ross
|
Trust in AI and Its Role in the Acceptance of AI Technologies
| null | null |
10.1080/10447318.2022.2050543
| null |
cs.AI cs.HC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
As AI-enhanced technologies become common in a variety of domains, there is
an increasing need to define and examine the trust that users have in such
technologies. Given the progress in the development of AI, a correspondingly
sophisticated understanding of trust in the technology is required. This paper
addresses this need by explaining the role of trust on the intention to use AI
technologies. Study 1 examined the role of trust in the use of AI voice
assistants based on survey responses from college students. A path analysis
confirmed that trust had a significant effect on the intention to use AI, which
operated through perceived usefulness and participants' attitude toward voice
assistants. In study 2, using data from a representative sample of the U.S.
population, different dimensions of trust were examined using exploratory
factor analysis, which yielded two dimensions: human-like trust and
functionality trust. The results of the path analyses from Study 1 were
replicated in Study 2, confirming the indirect effect of trust and the effects
of perceived usefulness, ease of use, and attitude on intention to use.
Further, both dimensions of trust shared a similar pattern of effects within
the model, with functionality-related trust exhibiting a greater total impact
on usage intention than human-like trust. Overall, the role of trust in the
acceptance of AI technologies was significant across both studies. This
research contributes to the advancement and application of the TAM in
AI-related applications and offers a multidimensional measure of trust that can
be utilized in the future study of trustworthy AI.
|
[{'version': 'v1', 'created': 'Wed, 23 Mar 2022 19:18:19 GMT'}]
|
2022-03-25
|
[array(['Choung', 'Hyesun', ''], dtype=object)
array(['David', 'Prabu', ''], dtype=object)
array(['Ross', 'Arun', ''], dtype=object)]
|
17,136 |
2105.06942
|
Yoshimichi Nakatsuka
|
Scott Jordan, Yoshimichi Nakatsuka, Ercan Ozturk, Andrew Paverd, Gene
Tsudik
|
VICEROY: GDPR-/CCPA-compliant Enforcement of Verifiable Accountless
Consumer Requests
| null |
Network and Distributed System Security (NDSS) Symposium 2023
|
10.14722/ndss.2023.23074
| null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recent data protection regulations (such as GDPR and CCPA) grant consumers
various rights, including the right to access, modify or delete any personal
information collected about them (and retained) by a service provider. To
exercise these rights, one must submit a verifiable consumer request proving
that the collected data indeed pertains to them. This action is straightforward
for consumers with active accounts with a service provider at the time of data
collection, since they can use standard (e.g., password-based) means of
authentication to validate their requests. However, a major conundrum arises
from the need to support consumers without accounts to exercise their rights.
To this end, some service providers began requiring such accountless consumers
to reveal and prove their identities (e.g., using government-issued documents,
utility bills, or credit card numbers) as part of issuing a verifiable consumer
request. While understandable as a short-term cure, this approach is cumbersome
and expensive for service providers as well as privacy-invasive for consumers.
Consequently, there is a strong need to provide better means of authenticating
requests from accountless consumers. To achieve this, we propose VICEROY, a
privacy-preserving and scalable framework for producing proofs of data
ownership, which form a basis for verifiable consumer requests. Building upon
existing web techniques and features, VICEROY allows accountless consumers to
interact with service providers, and later prove that they are the same person
in a privacy-preserving manner, while requiring minimal changes for both
parties. We design and implement VICEROY with emphasis on security/privacy,
deployability and usability. We also thoroughly assess its practicality via
extensive experiments.
|
[{'version': 'v1', 'created': 'Fri, 14 May 2021 16:34:32 GMT'}
{'version': 'v2', 'created': 'Wed, 2 Feb 2022 05:07:18 GMT'}
{'version': 'v3', 'created': 'Fri, 21 Oct 2022 18:35:44 GMT'}]
|
2022-10-25
|
[array(['Jordan', 'Scott', ''], dtype=object)
array(['Nakatsuka', 'Yoshimichi', ''], dtype=object)
array(['Ozturk', 'Ercan', ''], dtype=object)
array(['Paverd', 'Andrew', ''], dtype=object)
array(['Tsudik', 'Gene', ''], dtype=object)]
|
17,137 |
2103.03569
|
Pauline Puteaux
|
Pauline Puteaux (UM, LIRMM), Vincent Itier (IMT Lille Douai, CRIStAL),
Patrick Bas (CNRS, CRIStAL)
|
Combining Forensics and Privacy Requirements for Digital Images
| null | null | null | null |
cs.CR eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper proposes to study the impact of image selective encryption on both
forensics and privacy preserving mechanisms. The proposed selective encryption
scheme works independently on each bitplane by encrypting the s most
significant bits of each pixel. We show that this mechanism can be used to
increase privacy by mitigating image recognition tasks. In order to guarantee a
trade-off between forensics analysis and privacy, the signal of interest used
for forensics purposes is extracted from the 8--s least significant bits of the
protected image. We show on the CASIA2 database that good tampering detection
capabilities can be achieved for s $\in$ {3,. .. , 5} with an accuracy above
80% using SRMQ1 features, while preventing class recognition tasks using CNN
with an accuracy smaller than 50%.
|
[{'version': 'v1', 'created': 'Fri, 5 Mar 2021 09:54:00 GMT'}]
|
2021-03-08
|
[array(['Puteaux', 'Pauline', '', 'UM, LIRMM'], dtype=object)
array(['Itier', 'Vincent', '', 'IMT Lille Douai, CRIStAL'], dtype=object)
array(['Bas', 'Patrick', '', 'CNRS, CRIStAL'], dtype=object)]
|
17,138 |
1408.4055
|
Stuart Dowker
|
J.S.Dowker
|
Expansion of R\'enyi entropy for free scalar fields
|
11 pages Section on conical method added
| null | null | null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An expression for the effective action of a conformal scalar on odd spheres
allows a relatively simple computation of the expansion coefficients of the
R\'enyi entropy for any odd dimension, d. Explicit values are listed for d=3,5
and 7. The alternative method, using a mapping to a flat conical manifold, is
also employed, again for any odd dimension, and some mathematical details are
presented on the computation of certain integrals.
|
[{'version': 'v1', 'created': 'Mon, 18 Aug 2014 16:15:41 GMT'}
{'version': 'v2', 'created': 'Sun, 21 Sep 2014 22:13:07 GMT'}]
|
2014-09-23
|
[array(['Dowker', 'J. S.', ''], dtype=object)]
|
17,139 |
1712.05405
|
Victor Kalvin
|
Victor Kalvin
|
On Determinants of Laplacians on Compact Riemann Surfaces Equipped with
Pullbacks of Conical Metrics by Meromorphic Functions
|
typos. arXiv admin note: text overlap with arXiv:1612.08660
| null |
10.1007/s12220-018-0018-2
| null |
math.AP math.DG math.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $\mathsf m$ be any conical (or smooth) metric of finite volume on the
Riemann sphere $\Bbb CP^1$. On a compact Riemann surface $X$ of genus $g$
consider a meromorphic funciton $f: X\to {\Bbb C}P^1$ such that all poles and
critical points of $f$ are simple and no critical value of $f$ coincides with a
conical singularity of $\mathsf m$ or $\{\infty\}$. The pullback $f^*\mathsf m$
of $\mathsf m$ under $f$ has conical singularities of angles $4\pi$ at the
critical points of $f$ and other conical singularities that are the preimages
of those of $\mathsf m$. We study the $\zeta$-regularized determinant
$\operatorname{Det}' \Delta_F$ of the (Friedrichs extension of)
Laplace-Beltrami operator on $(X,f^*\mathsf m)$ as a functional on the moduli
space of pairs $(X, f)$ and obtain an explicit formula for $\operatorname{Det}'
\Delta_F$.
|
[{'version': 'v1', 'created': 'Fri, 15 Dec 2017 00:11:05 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Sep 2018 17:42:43 GMT'}]
|
2018-09-19
|
[array(['Kalvin', 'Victor', ''], dtype=object)]
|
17,140 |
0803.2887
|
Hideo Mabuchi
|
Hideo Mabuchi
|
Derivation of Maxwell-Bloch-type equations by projection of quantum
models
|
4 pages, 1 EPS figure
| null |
10.1103/PhysRevA.78.015801
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A simple algebraic procedure is described for deriving Maxwell-Bloch-type
equations from single-atom cavity quantum electrodynamics (cavity QED) master
equations via orthogonal projection onto a manifold of semiclassical states. In
particular the usual Maxwell-Bloch Equations are obtained--up to a
state-dependent correction factor of order unity--straightforwardly from the
unconditional Jaynes-Cummings master equation. The technique of projecting onto
a semiclassical manifold can also be applied with conditional master equations
(quantum filters), leading to stochastic simulation models that include
multiplicative noise terms associated with fluctuations of the atomic dipole.
The utility of such models is briefly explored in the context of single-atom
absorptive bistability.
|
[{'version': 'v1', 'created': 'Wed, 19 Mar 2008 20:45:14 GMT'}]
|
2009-11-13
|
[array(['Mabuchi', 'Hideo', ''], dtype=object)]
|
17,141 |
1405.0138
|
Eleni Vatamidou
|
Eleni Vatamidou, Ivo J.B.F. Adan, Maria Vlasiou, Bert Zwart
|
Corrected phase-type approximations of heavy-tailed queueing models in a
Markovian environment
|
Received the Marcel Neuts Student Paper Award at the 8th
International Conference on Matrix Analytic Methods in Stochastic Models 2014
| null | null | null |
math.PR
|
http://creativecommons.org/licenses/by-nc-sa/3.0/
|
Significant correlations between arrivals of load-generating events make the
numerical evaluation of the workload of a system a challenging problem. In this
paper, we construct highly accurate approximations of the workload distribution
of the MAP/G/1 queue that capture the tail behavior of the exact workload
distribution and provide a bounded relative error. Motivated by statistical
analysis, we consider the service times as a mixture of a phase-type and a
heavy-tailed distribution. With the aid of perturbation analysis, we derive our
approximations as a sum of the workload distribution of the MAP/PH/1 queue and
a heavy-tailed component that depends on the perturbation parameter. We refer
to our approximations as corrected phase-type approximations, and we exhibit
their performance with a numerical study.
|
[{'version': 'v1', 'created': 'Thu, 1 May 2014 11:42:40 GMT'}]
|
2014-05-02
|
[array(['Vatamidou', 'Eleni', ''], dtype=object)
array(['Adan', 'Ivo J. B. F.', ''], dtype=object)
array(['Vlasiou', 'Maria', ''], dtype=object)
array(['Zwart', 'Bert', ''], dtype=object)]
|
17,142 |
2209.14022
|
Hazrat Ali
|
Hazrat Ali
|
Leveraging machine learning for less developed languages: Progress on
Urdu text detection
|
Accepted at NeurIPS ML4D workshop. arXiv admin note: text overlap
with arXiv:2109.08060
|
NeurIPS ML4D 2021
| null | null |
cs.CV cs.AI cs.LG eess.IV
|
http://creativecommons.org/licenses/by/4.0/
|
Text detection in natural scene images has applications for autonomous
driving, navigation help for elderly and blind people. However, the research on
Urdu text detection is usually hindered by lack of data resources. We have
developed a dataset of scene images with Urdu text. We present the use of
machine learning methods to perform detection of Urdu text from the scene
images. We extract text regions using channel enhanced Maximally Stable
Extremal Region (MSER) method. First, we classify text and noise based on their
geometric properties. Next, we use a support vector machine for early
discarding of non-text regions. To further remove the non-text regions, we use
histogram of oriented gradients (HoG) features obtained and train a second SVM
classifier. This improves the overall performance on text region detection
within the scene images. To support research on Urdu text, We aim to make the
data freely available for research use. We also aim to highlight the challenges
and the research gap for Urdu text detection.
|
[{'version': 'v1', 'created': 'Wed, 28 Sep 2022 12:00:34 GMT'}]
|
2022-09-29
|
[array(['Ali', 'Hazrat', ''], dtype=object)]
|
17,143 |
1605.08929
|
Andrew Booker
|
Andrew R. Booker
|
A variant of the Euclid-Mullin sequence containing every prime
|
5 pages, submitted
|
Journal of Integer Sequences, Volume 19 (2016), Article 16.6.4
| null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a generalization of Euclid's proof of the infinitude of primes
and show that it leads to variants of the Euclid-Mullin sequence that provably
contain every prime number.
|
[{'version': 'v1', 'created': 'Sat, 28 May 2016 19:49:03 GMT'}]
|
2016-07-07
|
[array(['Booker', 'Andrew R.', ''], dtype=object)]
|
17,144 |
1910.03853
|
Fuhai Chen
|
Fuhai Chen, Rongrong Ji, Chengpeng Dai, Xiaoshuai Sun, Chia-Wen Lin,
Jiayi Ji, Baochang Zhang, Feiyue Huang, Liujuan Cao
|
Semantic-aware Image Deblurring
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Image deblurring has achieved exciting progress in recent years. However,
traditional methods fail to deblur severely blurred images, where semantic
contents appears ambiguously. In this paper, we conduct image deblurring guided
by the semantic contents inferred from image captioning. Specially, we propose
a novel Structured-Spatial Semantic Embedding model for image deblurring
(termed S3E-Deblur), which introduces a novel Structured-Spatial Semantic tree
model (S3-tree) to bridge two basic tasks in computer vision: image deblurring
(ImD) and image captioning (ImC). In particular, S3-tree captures and
represents the semantic contents in structured spatial features in ImC, and
then embeds the spatial features of the tree nodes into GAN based ImD.
Co-training on S3-tree, ImC, and ImD is conducted to optimize the overall model
in a multi-task end-to-end manner. Extensive experiments on severely blurred
MSCOCO and GoPro datasets demonstrate the significant superiority of S3E-Deblur
compared to the state-of-the-arts on both ImD and ImC tasks.
|
[{'version': 'v1', 'created': 'Wed, 9 Oct 2019 08:59:45 GMT'}]
|
2019-10-10
|
[array(['Chen', 'Fuhai', ''], dtype=object)
array(['Ji', 'Rongrong', ''], dtype=object)
array(['Dai', 'Chengpeng', ''], dtype=object)
array(['Sun', 'Xiaoshuai', ''], dtype=object)
array(['Lin', 'Chia-Wen', ''], dtype=object)
array(['Ji', 'Jiayi', ''], dtype=object)
array(['Zhang', 'Baochang', ''], dtype=object)
array(['Huang', 'Feiyue', ''], dtype=object)
array(['Cao', 'Liujuan', ''], dtype=object)]
|
17,145 |
1509.08558
|
Fayin Wang
|
J. S. Wang, F. Y. Wang (NJU), K. S. Cheng (HKU), Z. G. Dai (NJU)
|
Measuring dark energy with the $E_{\rm iso}-E_{\rm p}$ correlation of
gamma-ray bursts using model-independent methods
|
10 pages, 6 figures, 4 table, accepted by A&A. Table 4 contains
calibrated distance moduli of GRBs
|
A&A 585, A68 (2016)
|
10.1051/0004-6361/201526485
| null |
astro-ph.HE astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we use two model-independent methods to standardize long
gamma-ray bursts (GRBs) using the $E_{\rm iso}-E_{\rm p}$ correlation, where
$E_{\rm iso}$ is the isotropic-equivalent gamma-ray energy and $E_{\rm p}$ is
the spectral peak energy. We update 42 long GRBs and try to make constraint on
cosmological parameters. The full sample contains 151 long GRBs with redshifts
from 0.0331 to 8.2. The first method is the simultaneous fitting method. The
extrinsic scatter $\sigma_{\rm ext}$ is taken into account and assigned to the
parameter $E_{\rm iso}$. The best-fitting values are $a=49.15\pm0.26$,
$b=1.42\pm0.11$, $\sigma_{\rm ext}=0.34\pm0.03$ and $\Omega_m=0.79$ in the flat
$\Lambda$CDM model. The constraint on $\Omega_m$ is $0.55<\Omega_m<1$ at the
1$\sigma$ confidence level. If reduced $\chi^2$ method is used, the best-fit
results are $a=48.96\pm0.18$, $b=1.52\pm0.08$ and $\Omega_m=0.50\pm0.12$. The
second method is using type Ia supernovae (SNe Ia) to calibrate the $E_{\rm
iso}-E_{\rm p}$ correlation. We calibrate 90 high-redshift GRBs in the redshift
range from 1.44 to 8.1. The cosmological constraints from these 90 GRBs are
$\Omega_m=0.23^{+0.06}_{-0.04}$ for flat $\Lambda$CDM, and
$\Omega_m=0.18\pm0.11$ and $\Omega_{\Lambda}=0.46\pm0.51$ for non-flat
$\Lambda$CDM. For the combination of GRB and SNe Ia sample, we obtain
$\Omega_m=0.271\pm0.019$ and $h=0.701\pm0.002$ for the flat $\Lambda$CDM, and
for the non-flat $\Lambda$CDM, the results are $\Omega_m=0.225\pm0.044$,
$\Omega_{\Lambda}=0.640\pm0.082$ and $h=0.698\pm0.004$. These results from
calibrated GRBs are consistent with that of SNe Ia. Meanwhile, the combined
data can improve cosmological constraints significantly, comparing to SNe Ia
alone. Our results show that the $E_{\rm iso}-E_{\rm p}$ correlation is
promising to probe the high-redshift universe.
|
[{'version': 'v1', 'created': 'Tue, 29 Sep 2015 02:09:38 GMT'}
{'version': 'v2', 'created': 'Fri, 23 Oct 2015 03:12:11 GMT'}]
|
2015-12-23
|
[array(['Wang', 'J. S.', '', 'NJU'], dtype=object)
array(['Wang', 'F. Y.', '', 'NJU'], dtype=object)
array(['Cheng', 'K. S.', '', 'HKU'], dtype=object)
array(['Dai', 'Z. G.', '', 'NJU'], dtype=object)]
|
17,146 |
1105.4007
|
Kouji Nakamura
|
Kouji Nakamura
|
Construction of gauge-invariant variables of linear metric perturbations
on an arbitrary background spacetime
|
26 pages, no figure. Compacted version of arXiv:1101.1147v1[gr-qc]
but includes new ingredients; (v2) Title is slightly changed. Some
discussions and references are added. Some typos are corrected
| null |
10.1093/ptep/ptt006
| null |
gr-qc astro-ph.CO hep-th math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An outline of a proof of the decomposition of linear metric perturbations
into gauge-invariant and gauge-variant parts on the an arbitrary background
spacetime which admits ADM decomposition is discussed. We explicitly construct
the gauge-invariant and gauge-variant parts of the linear metric perturbations
through the assumption of the existence of some Green functions. We also
confirm the result through another approach. This implies that we can develop
the higher-order gauge-invariant perturbation theory on an arbitrary background
spacetime. Remaining issues to complete the general-framework of the
general-relativistic higher-order gauge-invariant perturbation theories are
also discussed.
|
[{'version': 'v1', 'created': 'Fri, 20 May 2011 03:25:44 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Jan 2013 02:15:27 GMT'}]
|
2016-06-21
|
[array(['Nakamura', 'Kouji', ''], dtype=object)]
|
17,147 |
1307.0709
|
Maximiliane Goossens
|
M. E. Goossens, A. J. Bird, S. P. Drave, A. Bazzano, A. B. Hill, V. A.
McBride, V. Sguera and L. Sidoli
|
Discovering a 5.72 Day Period in the Supergiant Fast X-ray Transient AX
J1845.0-0433
|
6 pages, 6 figures, accepted for publication in MNRAS
| null |
10.1093/mnras/stt1166
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Temporal analysis of INTEGRAL/IBIS data has revealed a 5.7195\pm0.0007 day
periodicity in the supergiant fast X-ray transient (SFXT) source AX
J1845.0-0433, which we interpret as the orbital period of the system. The
new-found knowledge of the orbital period is utilised to investigate the
geometry of the system by means of estimating an upper limit for the size of
the supergiant (<27 R_{\sun}) as well as the eccentricity of the orbit
(\epsilon<0.37).
|
[{'version': 'v1', 'created': 'Tue, 2 Jul 2013 14:08:31 GMT'}]
|
2015-06-16
|
[array(['Goossens', 'M. E.', ''], dtype=object)
array(['Bird', 'A. J.', ''], dtype=object)
array(['Drave', 'S. P.', ''], dtype=object)
array(['Bazzano', 'A.', ''], dtype=object)
array(['Hill', 'A. B.', ''], dtype=object)
array(['McBride', 'V. A.', ''], dtype=object)
array(['Sguera', 'V.', ''], dtype=object)
array(['Sidoli', 'L.', ''], dtype=object)]
|
17,148 |
2208.08645
|
Marco Omainska
|
Marco Omainska, Junya Yamauchi, Masayuki Fujita
|
Visual Pursuit Control based on Gaussian Processes with Switched Motion
Trajectories
|
This paper has been accepted to "The 9th IFAC Symposium on
Mechatronic Systems 2022" for publication under a Creative Commons Licence
CC-BY-NC-ND. It contains 6 pages and a total of 5 figures
| null | null | null |
eess.SY cs.SY
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
This paper considers a scenario of pursuing a moving target that may switch
behaviors due to external factors in a dynamic environment by motion estimation
using visual sensors. First, we present an improved Visual Motion Observer with
switched Gaussian Process models for an extended class of target motion
profiles. We then propose a pursuit control law with an online method to
estimate the switching behavior of the target by the GP model uncertainty.
Next, we prove ultimate boundedness of the control and estimation errors for
the switch in target behavior with high probability. Finally, a Digital Twin
simulation demonstrates the effectiveness of the proposed switching estimation
and control law to prove applicability to real world scenarios.
|
[{'version': 'v1', 'created': 'Thu, 18 Aug 2022 05:48:58 GMT'}]
|
2022-08-19
|
[array(['Omainska', 'Marco', ''], dtype=object)
array(['Yamauchi', 'Junya', ''], dtype=object)
array(['Fujita', 'Masayuki', ''], dtype=object)]
|
17,149 |
astro-ph/0411334
|
Anthony G. A. Brown
|
Anthony Brown (1), Hector Velazquez (2), Luis Aguilar (2) ((1)
Sterrewacht Leiden, (2) IA-UNAM Ensenada)
|
From Detailed Galaxy Simulations to a Realistic End-of-Mission Gaia
Catalogue
|
4 pages, 7 figures, to appear in Proceedings of the Symposium "The
Three-Dimensional Universe with Gaia", 4-7 October 2004, Observatoire de
Paris-Meudon, France (ESA SP-576)
| null | null | null |
astro-ph
| null |
We address the problem of identifying remnants of satellite galaxies in the
halo of our galaxy with Gaia data. We make use of N-body simulations of dwarf
galaxies being disrupted in the halo of our galaxy combined with a Monte Carlo
model of the Milky Way galaxy. The models are converted to a simulated Gaia
catalogue containing a realistic number ($\sim10^8$--$10^9$) of stars. The
simulated catalogue can be used to study how to handle the large data set that
Gaia will provide and to study issues such as how to best retrieve information
on substructure in the Galactic halo. The techniques described are applicable
to any set of N-body simulations of (parts of) the Galaxy.
|
[{'version': 'v1', 'created': 'Fri, 12 Nov 2004 14:56:39 GMT'}]
|
2007-05-23
|
[array(['Brown', 'Anthony', ''], dtype=object)
array(['Velazquez', 'Hector', ''], dtype=object)
array(['Aguilar', 'Luis', ''], dtype=object)]
|
17,150 |
1106.4636
|
Roger Hausermann
|
Roger H\"ausermann and Bertram Batlogg
|
Gate Bias Stress in Pentacene Field-Effect-Transistors: Charge Trapping
in the Dielectric or Semiconductor
|
4 pages 3 figures
| null |
10.1063/1.3628297
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Gate bias stress instability in organic field-effect transistors (OFETs) is a
major conceptual and device issue. This effect manifests itself by an
undesirable shift of the transfer characteristics and is associated with long
term charge trapping. We study the role of the dielectric and the semiconductor
separately by producing OFETs with the same semiconductor (pentacene) combined
with different dielectrics (SiO$_2$ and Cytop). We show, it is possible to
fabricate devices which are immune to gate bias stress. For other material
combinations, charge trapping occurs in the semiconductor alone, or in the
dielectric.
|
[{'version': 'v1', 'created': 'Thu, 23 Jun 2011 06:34:06 GMT'}
{'version': 'v2', 'created': 'Thu, 4 Aug 2011 16:25:52 GMT'}]
|
2015-05-28
|
[array(['Häusermann', 'Roger', ''], dtype=object)
array(['Batlogg', 'Bertram', ''], dtype=object)]
|
17,151 |
1108.6246
|
N. A. Carella
|
N. A. Carella
|
Lagrange's Theorem On The Minimal Set Of Squares
|
Five Pages
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It will be demonstrated that there is a thin basis of order four of minimal
cardinality #A(x) = O(x^.25). The current literature shows the existence of a
thin basis of order four of cardinality #A(x) = O(x^(.25+{\epsilon}),
{\epsilon} > 0, but speculates on the existence of a thin basis of order four
of minimal cardinality.
|
[{'version': 'v1', 'created': 'Tue, 30 Aug 2011 15:12:32 GMT'}]
|
2011-09-01
|
[array(['Carella', 'N. A.', ''], dtype=object)]
|
17,152 |
1512.05802
|
Pawe{\l} Krupski
|
Konrad Kr\'olicki and Pawe{\l} Krupski
|
Wilder continua and their subfamilies as coanalytic absorbers
| null |
Topology and its Applications 220 (2017), 146-151
|
10.1016/j.topol.2017.02.012
| null |
math.GN math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The family of Wilder continua in cubes of dimension > 2 and its two
subfamilies-of continuum-wise Wilder continua and of hereditarily arcwise
connected continua-are recognized as coanalytic absorbers in the hyperspace of
subcontinua of the cubes. In particular, each of them is homeomorphic to the
set of all nonempty countable closed subsets of the unit interval.
|
[{'version': 'v1', 'created': 'Thu, 17 Dec 2015 21:31:57 GMT'}
{'version': 'v2', 'created': 'Tue, 5 Apr 2016 08:47:40 GMT'}]
|
2017-04-25
|
[array(['Królicki', 'Konrad', ''], dtype=object)
array(['Krupski', 'Paweł', ''], dtype=object)]
|
17,153 |
2111.11697
|
Gautham Gopinath
|
Gautham Gopinath, Chun-Shing Lee, Xin-Yuan Gao, Xiao-Dong An, Chor-Hoi
Chan, Cho-Tung Yip, Hai-Yao Deng, Chi-Hang Lam
|
Diffusion coefficient power laws and defect-driven glassy dynamics in
swap acceleration
|
14 pages, 20 figures
|
Phys. Rev. Lett. 129, 168002 (2022)
|
10.1103/PhysRevLett.129.168002
| null |
cond-mat.dis-nn cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Particle swaps can drastically accelerate dynamics in glass. The mechanism is
expected to be vital for a fundamental understanding of glassy dynamics. To
extract defining features, we propose a partial swappability with a fraction
{\phi_s} of swap-initiating particles, which can only swap locally with each
other or with regular particles. We focus on the swap-dominating regime. At all
temperatures studied, particle diffusion coefficients scale with {\phi_s} in
unexpected power laws with temperature-dependent exponents, consistent with the
kinetic picture of glass transition. At small {\phi_s}, swap-initiators,
becoming defect particles, induce remarkably typical glassy dynamics of regular
particles. This supports defect models of glass.
|
[{'version': 'v1', 'created': 'Tue, 23 Nov 2021 07:40:44 GMT'}
{'version': 'v2', 'created': 'Sun, 30 Oct 2022 20:18:00 GMT'}]
|
2022-11-01
|
[array(['Gopinath', 'Gautham', ''], dtype=object)
array(['Lee', 'Chun-Shing', ''], dtype=object)
array(['Gao', 'Xin-Yuan', ''], dtype=object)
array(['An', 'Xiao-Dong', ''], dtype=object)
array(['Chan', 'Chor-Hoi', ''], dtype=object)
array(['Yip', 'Cho-Tung', ''], dtype=object)
array(['Deng', 'Hai-Yao', ''], dtype=object)
array(['Lam', 'Chi-Hang', ''], dtype=object)]
|
17,154 |
1610.00374
|
Qing-Ming Cheng
|
Daguang Chen and Qing-Ming Cheng
|
Estimates for the first eigenvalue of Jacobi operator on hypersurfaces
with constant mean curvature in spheres
|
the title is changed. to appear in Calculus of Variations and PDE's
| null | null | null |
math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we study the first eigenvalue of Jacobi operator on an
$n$-dimensional non-totally umbilical compact hypersurface with constant mean
curvature $H$ in the unit sphere $S^{n+1}(1)$. We give an optimal upper bound
for the first eigenvalue of Jacobi operator, which only depends on the mean
curvature $H$ and the dimension $n$.
|
[{'version': 'v1', 'created': 'Mon, 3 Oct 2016 00:33:45 GMT'}
{'version': 'v2', 'created': 'Fri, 14 Oct 2016 05:22:58 GMT'}
{'version': 'v3', 'created': 'Wed, 1 Mar 2017 08:15:13 GMT'}]
|
2017-03-02
|
[array(['Chen', 'Daguang', ''], dtype=object)
array(['Cheng', 'Qing-Ming', ''], dtype=object)]
|
17,155 |
1604.06781
|
Uli Fahrenberg
|
Rafael Olaechea, Uli Fahrenberg, Joanne M. Atlee, Axel Legay
|
Long-Term Average Cost in Featured Transition Systems
| null | null | null | null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A software product line is a family of software products that share a common
set of mandatory features and whose individual products are differentiated by
their variable (optional or alternative) features. Family-based analysis of
software product lines takes as input a single model of a complete product line
and analyzes all its products at the same time. As the number of products in a
software product line may be large, this is generally preferable to analyzing
each product on its own. Family-based analysis, however, requires that standard
algorithms be adapted to accomodate variability.
In this paper we adapt the standard algorithm for computing limit average
cost of a weighted transition system to software product lines. Limit average
is a useful and popular measure for the long-term average behavior of a quality
attribute such as performance or energy consumption, but has hitherto not been
available for family-based analysis of software product lines. Our algorithm
operates on weighted featured transition systems, at a symbolic level, and
computes limit average cost for all products in a software product line at the
same time. We have implemented the algorithm and evaluated it on several
examples.
|
[{'version': 'v1', 'created': 'Fri, 22 Apr 2016 19:06:22 GMT'}]
|
2016-04-25
|
[array(['Olaechea', 'Rafael', ''], dtype=object)
array(['Fahrenberg', 'Uli', ''], dtype=object)
array(['Atlee', 'Joanne M.', ''], dtype=object)
array(['Legay', 'Axel', ''], dtype=object)]
|
17,156 |
2004.03991
|
Karl Stratos
|
Karl Stratos, Sam Wiseman
|
Learning Discrete Structured Representations by Adversarially Maximizing
Mutual Information
|
ICML 2020
| null | null | null |
cs.LG cs.IT math.IT stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose learning discrete structured representations from unlabeled data
by maximizing the mutual information between a structured latent variable and a
target variable. Calculating mutual information is intractable in this setting.
Our key technical contribution is an adversarial objective that can be used to
tractably estimate mutual information assuming only the feasibility of cross
entropy calculation. We develop a concrete realization of this general
formulation with Markov distributions over binary encodings. We report critical
and unexpected findings on practical aspects of the objective such as the
choice of variational priors. We apply our model on document hashing and show
that it outperforms current best baselines based on discrete and vector
quantized variational autoencoders. It also yields highly compressed
interpretable representations.
|
[{'version': 'v1', 'created': 'Wed, 8 Apr 2020 13:31:53 GMT'}
{'version': 'v2', 'created': 'Wed, 15 Jul 2020 18:03:23 GMT'}]
|
2020-07-17
|
[array(['Stratos', 'Karl', ''], dtype=object)
array(['Wiseman', 'Sam', ''], dtype=object)]
|
17,157 |
2304.07769
|
Zahra Dehghanian
|
Zahra Dehghanian, Saeed Saravani, Maryam Amirmazlaghani, Mohammad
Rahmati
|
Regularized Complete Cycle Consistent GAN for Anomaly Detection
| null | null | null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This study presents an adversarial method for anomaly detection in real-world
applications, leveraging the power of generative adversarial neural networks
(GANs) through cycle consistency in reconstruction error. Previous methods
suffer from the high variance between class-wise accuracy which leads to not
being applicable for all types of anomalies. The proposed method named RCALAD
tries to solve this problem by introducing a novel discriminator to the
structure, which results in a more efficient training process. Additionally,
RCALAD employs a supplementary distribution in the input space to steer
reconstructions toward the normal data distribution, effectively separating
anomalous samples from their reconstructions and facilitating more accurate
anomaly detection. To further enhance the performance of the model, two novel
anomaly scores are introduced. The proposed model has been thoroughly evaluated
through extensive experiments on six various datasets, yielding results that
demonstrate its superiority over existing state-of-the-art models. The code is
readily available to the research community at
https://github.com/zahraDehghanian97/RCALAD.
|
[{'version': 'v1', 'created': 'Sun, 16 Apr 2023 13:05:39 GMT'}]
|
2023-04-18
|
[array(['Dehghanian', 'Zahra', ''], dtype=object)
array(['Saravani', 'Saeed', ''], dtype=object)
array(['Amirmazlaghani', 'Maryam', ''], dtype=object)
array(['Rahmati', 'Mohammad', ''], dtype=object)]
|
17,158 |
2110.15651
|
Adam Ingram Dr
|
Adam Ingram, Guglielmo Mastroserio, Michiel van der Klis, Edward
Nathan, Riley Connors, Thomas Dauser, Javier A. Garc\'ia, Erin Kara, Ole
K\"onig, Matteo Lucchini and Jingyi Wang
|
On measuring the Hubble constant with X-ray reverberation mapping of
active galactic nuclei
|
Accepted for publication in MNRAS
| null |
10.1093/mnras/stab2950
| null |
astro-ph.HE astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that X-ray reverberation mapping can be used to measure the distance
to type 1 active galactic nuclei (AGNs). This is because X-ray photons
originally emitted from the `corona' close to the black hole irradiate the
accretion disc and are re-emitted with a characteristic `reflection' spectrum
that includes a prominent $\sim 6.4$ keV iron emission line. The shape of the
reflection spectrum depends on the irradiating flux, and the light-crossing
delay between continuum photons observed directly from the corona and the
reflected photons constrains the size of the disc. Simultaneously modelling the
X-ray spectrum and the time delays between photons of different energies
therefore constrains the intrinsic reflected luminosity, and the distance
follows from the observed reflected flux. Alternatively, the distance can be
measured from the X-ray spectrum alone if the black hole mass is known. We
develop a new model of our RELTRANS X-ray reverberation mapping package, called
RTDIST, that has distance as a model parameter. We simulate a synthetic
observation that we fit with our new model, and find that this technique
applied to a sample of $\sim 25$ AGNs can be used to measure the Hubble
constant with a $3 \sigma$ statistical uncertainty of $\sim 6~{\rm km}~{\rm
s}^{-1}{\rm Mpc}^{-1}$. Since the technique is completely independent of the
traditional distance ladder and the cosmic microwave background radiation, it
has the potential to address the current tension between them. We discuss
sources of modelling uncertainty, and how they can be addressed in the near
future.
|
[{'version': 'v1', 'created': 'Fri, 29 Oct 2021 09:53:50 GMT'}]
|
2021-11-17
|
[array(['Ingram', 'Adam', ''], dtype=object)
array(['Mastroserio', 'Guglielmo', ''], dtype=object)
array(['van der Klis', 'Michiel', ''], dtype=object)
array(['Nathan', 'Edward', ''], dtype=object)
array(['Connors', 'Riley', ''], dtype=object)
array(['Dauser', 'Thomas', ''], dtype=object)
array(['García', 'Javier A.', ''], dtype=object)
array(['Kara', 'Erin', ''], dtype=object)
array(['König', 'Ole', ''], dtype=object)
array(['Lucchini', 'Matteo', ''], dtype=object)
array(['Wang', 'Jingyi', ''], dtype=object)]
|
17,159 |
1604.08744
|
Sumudu Samarakoon Mr.
|
Sumudu Samarakoon and Mehdi Bennis and Walid Saad and Matti Latva-aho
|
Enabling Relaying Over Heterogeneous Backhauls in the Uplink of Wireless
Femtocell Networks
|
6 pages, 6 figures, 1 table, WiOpt12 (published)
|
pp. 75-80, May 2012
| null | null |
cs.NI cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we develop novel two-tier interference management strategies
that enable macrocell users (MUEs) to improve their performance, with the help
of open-access femtocells. To this end, we propose a rate-splitting technique
using which the MUEs optimize their uplink transmissions by dividing their
signals into two types: a coarse message that is intended for direct
transmission to the macrocell base station and a fine message that is decoded
by a neighboring femtocell and subsequently relayed over a heterogeneous
(wireless/wired) backhaul. For deploying the proposed technique, we formulate a
non-cooperative game between the MUEs in which each MUE can decide on its
relaying femtocell while maximizing a utility function that captures both the
achieved throughput and the expected backhaul delay. Simulation results show
that the proposed approach yields up to 125% rate improvement and up to 2 times
delay reduction with wired backhaul and, 150% rate improvement and up to 10
times delay reduction with wireless backhaul, relative to classical
interference management approaches, with no cross-tier cooperation.
|
[{'version': 'v1', 'created': 'Fri, 29 Apr 2016 09:12:54 GMT'}]
|
2016-05-02
|
[array(['Samarakoon', 'Sumudu', ''], dtype=object)
array(['Bennis', 'Mehdi', ''], dtype=object)
array(['Saad', 'Walid', ''], dtype=object)
array(['Latva-aho', 'Matti', ''], dtype=object)]
|
17,160 |
1501.04479
|
Martin Boguslawski
|
Martin Boguslawski, Nemanja M. Lu\v{c}i\'c, Falko Diebel, Dejan V.
Timotijevi\'c, Cornelia Denz, and Dragana M. Jovi\'c Savi\'c
|
Light localization in optically induced deterministic aperiodic
Fibonacci lattices
| null | null | null | null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
As light localization becomes increasingly pronounced in photonic systems
with less order, we investigate optically induced two-dimensional Fibonacci
structures which are supposed to be amongst the most ordered realizations of
deterministic aperiodic patterns. For the generation of corresponding
refractive index structures, we implement a recently developed incremental
induction method using nondiffracting Bessel beams as waveguide formation
entities. Even though Fibonacci structures present slightly reduced order, we
show that transverse light transport is significantly hampered here in
comparison with periodic lattices that account for discrete diffraction. Our
experimental findings are supported by numerical simulations that additionally
illustrate a development of transverse light localization for increasing
propagation distance.
|
[{'version': 'v1', 'created': 'Mon, 19 Jan 2015 13:09:23 GMT'}
{'version': 'v2', 'created': 'Tue, 3 Nov 2015 09:55:39 GMT'}]
|
2016-08-07
|
[array(['Boguslawski', 'Martin', ''], dtype=object)
array(['Lučić', 'Nemanja M.', ''], dtype=object)
array(['Diebel', 'Falko', ''], dtype=object)
array(['Timotijević', 'Dejan V.', ''], dtype=object)
array(['Denz', 'Cornelia', ''], dtype=object)
array(['Savić', 'Dragana M. Jović', ''], dtype=object)]
|
17,161 |
1304.1829
|
Andrew Poelstra
|
Tom Brown, Veselin Jungi\'c, Andrew Poelstra
|
On Double 3-Term Arithmetic Progressions
|
16 pages, 3 figures
| null | null | null |
math.CO
|
http://creativecommons.org/licenses/publicdomain/
|
In this note we are interested in the problem of whether or not every
increasing sequence of positive integers $x_1x_2x_3...$ with bounded gaps must
contain a double 3-term arithmetic progression, i.e., three terms $x_i$, $x_j$,
and $x_k$ such that $i + k = 2j$ and $x_i + x_k = 2x_j$. We consider a few
variations of the problem, discuss some related properties of double arithmetic
progressions, and present several results obtained by using RamseyScript, a
high-level scripting language.
|
[{'version': 'v1', 'created': 'Fri, 5 Apr 2013 22:02:39 GMT'}
{'version': 'v2', 'created': 'Tue, 6 Aug 2013 18:20:08 GMT'}
{'version': 'v3', 'created': 'Sat, 16 Nov 2013 17:01:53 GMT'}]
|
2013-11-19
|
[array(['Brown', 'Tom', ''], dtype=object)
array(['Jungić', 'Veselin', ''], dtype=object)
array(['Poelstra', 'Andrew', ''], dtype=object)]
|
17,162 |
1703.01919
|
Luca Di Persio
|
Chiara Benazzoli, Luciano Campi, Luca Di Persio
|
Mean field games with controlled jump-diffusion dynamics: Existence
results and an illiquid interbank market model
|
37 pages, 6 figures
| null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a family of mean field games with a state variable evolving as a
multivariate jump diffusion process. The jump component is driven by a Poisson
process with a time-dependent intensity function. All coefficients, i.e. drift,
volatility and jump size, are controlled. Under fairly general conditions, we
establish existence of a solution in a relaxed version of the mean field game
and give conditions under which the optimal strategies are in fact Markovian,
hence extending to a jump-diffusion setting previous results established in
[30]. The proofs rely upon the notions of relaxed controls and martingale
problems. Finally, to complement the abstract existence results, we study a
simple illiquid inter-bank market model, where the banks can change their
reserves only at the jump times of some exogenous Poisson processes with a
common constant intensity, and provide some numerical results.
|
[{'version': 'v1', 'created': 'Mon, 6 Mar 2017 15:16:59 GMT'}
{'version': 'v2', 'created': 'Mon, 14 May 2018 08:45:31 GMT'}
{'version': 'v3', 'created': 'Sat, 11 Jul 2020 05:39:07 GMT'}]
|
2020-07-14
|
[array(['Benazzoli', 'Chiara', ''], dtype=object)
array(['Campi', 'Luciano', ''], dtype=object)
array(['Di Persio', 'Luca', ''], dtype=object)]
|
17,163 |
2204.03633
|
Mugdha Polimera
|
Mugdha S. Polimera, Sheila J. Kannappan, Chris T. Richardson, Ashley
S. Bittner, Carlynn Ferguson, Amanda J. Moffett, Kathleen D. Eckert, Jillian
M. Bellovary, and Mark A. Norris
|
RESOLVE and ECO: Finding Low-Metallicity $z\sim0$ Dwarf AGN Candidates
Using Optimized Emission-Line Diagnostics
|
31 pages, 16 figures, 3 tables. Accepted by ApJ on April 3 2022
| null |
10.3847/1538-4357/ac6595
| null |
astro-ph.GA
|
http://creativecommons.org/licenses/by/4.0/
|
Existing star-forming vs. active galactic nucleus (AGN) classification
schemes using optical emission-line diagnostics mostly fail for low-metallicity
and/or highly star-forming galaxies, missing AGN in typical $z\sim0$ dwarfs. To
recover AGN in dwarfs with strong emission lines (SELs), we present a
classification scheme optimizing the use of existing optical diagnostics. We
use SDSS emission-line catalogs overlapping the volume- and mass-limited
RESOLVE and ECO surveys to determine the AGN percentage in SEL dwarfs. Our
photoionization grids show that the [O III]/H$\beta$ versus [S II]/H$\alpha$
diagram (SII plot) and [O III]/H$\beta$ versus [O I]/H$\alpha$ diagram (OI
plot) are less metallicity sensitive and more successful in identifying dwarf
AGN than the popular [O III]/H$\beta$ versus [N II]/H$\alpha$ diagnostic (NII
plot or "BPT diagram"). We identify a new category of "star-forming AGN"
(SF-AGN) classified as star-forming by the NII plot but as AGN by the SII
and/or OI plots. Including SF-AGN, we find the $z\sim0$ AGN percentage in
dwarfs with SELs to be $\sim$3-16\%, far exceeding most previous optical
estimates ($\sim$1\%). The large range in our dwarf AGN percentage reflects
differences in spectral fitting methodologies between catalogs. The highly
complete nature of RESOLVE and ECO allows us to normalize strong emission-line
galaxy statistics to the full galaxy population, reducing the dwarf AGN
percentage to $\sim$0.6-3.0\%. The newly identified SF-AGN are mostly gas-rich
dwarfs with halo mass $ < 10^{11.5} M_\odot$, where highly efficient cosmic gas
accretion is expected. Almost all SF-AGN also have low metallicities (Z
$\lesssim 0.4$ Z$_\odot$), demonstrating the advantage of our method.
|
[{'version': 'v1', 'created': 'Thu, 7 Apr 2022 17:57:31 GMT'}
{'version': 'v2', 'created': 'Fri, 20 May 2022 19:36:36 GMT'}]
|
2022-06-01
|
[array(['Polimera', 'Mugdha S.', ''], dtype=object)
array(['Kannappan', 'Sheila J.', ''], dtype=object)
array(['Richardson', 'Chris T.', ''], dtype=object)
array(['Bittner', 'Ashley S.', ''], dtype=object)
array(['Ferguson', 'Carlynn', ''], dtype=object)
array(['Moffett', 'Amanda J.', ''], dtype=object)
array(['Eckert', 'Kathleen D.', ''], dtype=object)
array(['Bellovary', 'Jillian M.', ''], dtype=object)
array(['Norris', 'Mark A.', ''], dtype=object)]
|
17,164 |
2112.04191
|
Zhipeng Zhu
|
Zhipeng Zhu, Gary P. T. Choi, and Lok Ming Lui
|
Parallelizable global quasi-conformal parameterization of
multiply-connected surfaces via partial welding
| null | null | null | null |
math.NA cs.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Conformal and quasi-conformal mappings have widespread applications in
imaging science, computer vision and computer graphics, such as surface
registration, segmentation, remeshing, and texture map compression. While
various conformal and quasi-conformal parameterization methods for
simply-connected surfaces have been proposed, efficient parameterization
methods for multiply-connected surfaces are less explored. In this paper, we
propose a novel parallelizable algorithm for computing the global conformal and
quasi-conformal parameterization of multiply-connected surfaces onto a 2D
circular domain using variants of the partial welding algorithm and the Koebe's
iteration. The main idea is to partition a multiply-connected surface into
several subdomains and compute the free-boundary conformal or quasi-conformal
parameterizations of them respectively, and then apply a variant of the partial
welding algorithm to reconstruct the global mapping. We apply the Koebe's
iteration together with the geodesic algorithm to the boundary points and
welding paths before and after the global welding to transform all the
boundaries to circles conformally. After getting all the updated boundary
conditions, we obtain the global parameterization of the multiply-connected
surface by solving the Laplace equation for each subdomain. Using this
divide-and-conquer approach, the parameterization of surfaces with very high
resolution can be efficiently computed. Experimental results are presented to
demonstrate the effectiveness of our proposed algorithms.
|
[{'version': 'v1', 'created': 'Wed, 8 Dec 2021 09:35:14 GMT'}
{'version': 'v2', 'created': 'Mon, 20 Dec 2021 19:25:22 GMT'}]
|
2021-12-22
|
[array(['Zhu', 'Zhipeng', ''], dtype=object)
array(['Choi', 'Gary P. T.', ''], dtype=object)
array(['Lui', 'Lok Ming', ''], dtype=object)]
|
17,165 |
1410.1311
|
J. Nevalainen
|
J. Nevalainen, L. J. Liivamagi, E. Tempel, E. Branchini, M.
Roncarelli, C. Giocoli, P. Heinamaki, E. Saar, M. Bonamente, M. Einasto, A.
Finoguenov, J. Kaastra, E. Lindfors, P. Nurmi and Y. Ueda
|
Finding and characterising WHIM structures using the luminosity density
method
|
Proceedings of the IAU308 Symposium "The Zeldovic Universe",
Cambridge University Press, submitted
| null |
10.1017/S1743921316010188
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We have developed a new method to approach the missing baryons problem. We
assume that the missing baryons reside in a form of Warm Hot Intergalactic
Medium, i.e. the WHIM. Our method consists of (a) detecting the coherent large
scale structure in the spatial distribution of galaxies that traces the Cosmic
Web and that in hydrodynamical simulations is associated to the WHIM, (b) map
its luminosity into a galaxy luminosity density field, (c) use numerical
simulations to relate the luminosity density to the density of the WHIM, (d)
apply this relation to real data to trace the WHIM using the observed galaxy
luminosities in the Sloan Digital Sky Survey and 2dF redshift surveys. In our
application we find evidence for the WHIM along the line of sight to the
Sculptor Wall, at redshifts consistent with the recently reported X-ray
absorption line detections. Our indirect WHIM detection technique complements
the standard method based on the detection of characteristic X-ray absorption
lines, showing that the galaxy luminosity density is a reliable signpost for
the WHIM. For this reason, our method could be applied to current galaxy
surveys to optimise the observational strategies for detecting and studying the
WHIM and its properties. Our estimates of the WHIM hydrogen column density in
Sculptor agree with those obtained via the X-ray analysis. Due to the
additional column density estimate, our method has potential for improving the
constrains of the physical parameters of the WHIM as derived with X-ray
absorption, and thus for improving the understanding of the missing baryons
problem.
|
[{'version': 'v1', 'created': 'Mon, 6 Oct 2014 10:16:22 GMT'}]
|
2016-12-07
|
[array(['Nevalainen', 'J.', ''], dtype=object)
array(['Liivamagi', 'L. J.', ''], dtype=object)
array(['Tempel', 'E.', ''], dtype=object)
array(['Branchini', 'E.', ''], dtype=object)
array(['Roncarelli', 'M.', ''], dtype=object)
array(['Giocoli', 'C.', ''], dtype=object)
array(['Heinamaki', 'P.', ''], dtype=object)
array(['Saar', 'E.', ''], dtype=object)
array(['Bonamente', 'M.', ''], dtype=object)
array(['Einasto', 'M.', ''], dtype=object)
array(['Finoguenov', 'A.', ''], dtype=object)
array(['Kaastra', 'J.', ''], dtype=object)
array(['Lindfors', 'E.', ''], dtype=object)
array(['Nurmi', 'P.', ''], dtype=object)
array(['Ueda', 'Y.', ''], dtype=object)]
|
17,166 |
1711.08682
|
Chunyan Bai
|
Haoye Cai, Chunyan Bai, Yu-Wing Tai, Chi-Keung Tang
|
Deep Video Generation, Prediction and Completion of Human Action
Sequences
|
Under review for CVPR 2018. Haoye and Chunyan have equal contribution
| null |
10.1007/978-3-030-01216-8_23
| null |
cs.CV stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Current deep learning results on video generation are limited while there are
only a few first results on video prediction and no relevant significant
results on video completion. This is due to the severe ill-posedness inherent
in these three problems. In this paper, we focus on human action videos, and
propose a general, two-stage deep framework to generate human action videos
with no constraints or arbitrary number of constraints, which uniformly address
the three problems: video generation given no input frames, video prediction
given the first few frames, and video completion given the first and last
frames. To make the problem tractable, in the first stage we train a deep
generative model that generates a human pose sequence from random noise. In the
second stage, a skeleton-to-image network is trained, which is used to generate
a human action video given the complete human pose sequence generated in the
first stage. By introducing the two-stage strategy, we sidestep the original
ill-posed problems while producing for the first time high-quality video
generation/prediction/completion results of much longer duration. We present
quantitative and qualitative evaluation to show that our two-stage approach
outperforms state-of-the-art methods in video generation, prediction and video
completion. Our video result demonstration can be viewed at
https://iamacewhite.github.io/supp/index.html
|
[{'version': 'v1', 'created': 'Thu, 23 Nov 2017 13:10:34 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Nov 2017 04:48:27 GMT'}
{'version': 'v3', 'created': 'Fri, 8 Dec 2017 12:17:15 GMT'}]
|
2018-12-24
|
[array(['Cai', 'Haoye', ''], dtype=object)
array(['Bai', 'Chunyan', ''], dtype=object)
array(['Tai', 'Yu-Wing', ''], dtype=object)
array(['Tang', 'Chi-Keung', ''], dtype=object)]
|
17,167 |
2006.05111
|
Kaustav Mukherjee Dr
|
Kavita Yadav and K. Mukherjee
|
Effect of partial substitution of iso-valent Mo at Cr-site on electronic
structure and physical properties of Fe2CrAl
| null |
Intermetallics 133, 107153 (2021)
| null | null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Heusler alloy Fe2CrAl exhibits a ferromagnetic behaviour below Curie
temperature (TC) ~ 202 K along with presence of cluster glass (CG) phase near
freezing temperature (Tf) ~ 3.9 K and Griffiths phase (GP) above 300 K. The
physical properties of this alloy are very sensitive to substitutions and
anti-site disorder. Here, we investigate the effect of partial substitution of
Mo at Cr-site on physical properties of Fe2CrAl. Structural and morphological
analysis confirms the single cubic structure of the substituted alloys.
Increment in Mo concentration shifts the TC towards lower temperature, which is
ascribed to the effect of increased hybridization strength between 3d-4d states
of Fe/Cr/Mo. Additionally, systematic analysis of AC susceptibility, magnetic
memory effect and time dependent magnetization studies confirm the presence of
CG-like phase near (Tf) ~ 3.5 K in Fe2Cr0.95Mo0.05Al. Such feature gets
suppressed towards lower temperature with an increase of Mo concentration, i.e.
below 1.8 K in Fe2Cr0.85Mo0.15Al. The origin of the glassy signature is
ascribed to the decrement in magnetic anisotropy with Mo concentration. A
partial increment in magnetic entropy change is also noted near TC with the
increase in Mo substitution. Interestingly, at high temperatures (above 350 K),
GP phase persists in both the alloys due to the presence of anti-site disorder.
|
[{'version': 'v1', 'created': 'Tue, 9 Jun 2020 08:34:42 GMT'}
{'version': 'v2', 'created': 'Fri, 15 Oct 2021 14:50:46 GMT'}]
|
2021-10-22
|
[array(['Yadav', 'Kavita', ''], dtype=object)
array(['Mukherjee', 'K.', ''], dtype=object)]
|
17,168 |
gr-qc/9908052
|
Mikhail Yu. Zotov
|
M. Yu. Zotov
|
A solution to the problem posed by Byland and Scialom
|
REVTeX, 2 pages; v2: the title changed to avoid ambiguity -- thanks
to Brad Woodworth
| null | null | null |
gr-qc
| null |
Recently, Byland and Scialom studied the evolution of the Bianchi I, the
Bianchi III and the Kantowski-Sachs universe on the basis of dynamical systems
methods (Phys. Rev. D57, 6065 (1998), gr-qc/9802043). In particular, they have
pointed out a problem to determine the stability properties of one of the
degenerate critical points of the corresponding dynamical system. Here we give
a solution, showing that this point is unstable both to the past and to the
future. We also discuss the asymptotic behavior of the trajectories in the
vicinity of another critical point.
|
[{'version': 'v1', 'created': 'Thu, 19 Aug 1999 10:10:56 GMT'}
{'version': 'v2', 'created': 'Fri, 15 Sep 2000 09:11:27 GMT'}]
|
2007-05-23
|
[array(['Zotov', 'M. Yu.', ''], dtype=object)]
|
17,169 |
2210.01690
|
Stefano Bonetti
|
M. Basini, M. Pancaldi, B. Wehinger, M. Udina, T. Tadano, M. C.
Hoffmann, A. V. Balatsky, S. Bonetti
|
Terahertz electric-field driven dynamical multiferroicity in SrTiO$_3$
|
Main text: 10 pages, 4 figures, methods and 8 supplemental figures
| null | null | null |
cond-mat.str-el cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by/4.0/
|
The emergence of collective order in matter is among the most fundamental and
intriguing phenomena in physics. In recent years, the ultrafast dynamical
control and creation of novel ordered states of matter not accessible in
thermodynamic equilibrium is receiving much attention. Among those, the
theoretical concept of dynamical multiferroicity has been introduced to
describe the emergence of magnetization by means of a time-dependent electric
polarization in non-ferromagnetic materials. In simple terms, a large amplitude
coherent rotating motion of the ions in a crystal induces a magnetic moment
along the axis of rotation. However, the experimental verification of this
effect is still lacking. Here, we provide evidence of room temperature
magnetization in the archetypal paraelectric perovskite SrTiO$_3$ due to this
mechanism. To achieve it, we resonantly drive the infrared-active soft phonon
mode with intense circularly polarized terahertz electric field, and detect a
large magneto-optical Kerr effect. A simple model, which includes two coupled
nonlinear oscillators whose forces and couplings are derived with ab-initio
calculations using self-consistent phonon theory at a finite temperature,
reproduces qualitatively our experimental observations on the temporal and
frequency domains. A quantitatively correct magnitude of the effect is obtained
when one also considers the phonon analogue of the reciprocal of the Einsten -
de Haas effect, also called the Barnett effect, where the total angular
momentum from the phonon order is transferred to the electronic one. Our
findings show a new path for designing ultrafast magnetic switches by means of
coherent control of lattice vibrations with light.
|
[{'version': 'v1', 'created': 'Tue, 4 Oct 2022 15:40:10 GMT'}]
|
2022-10-05
|
[array(['Basini', 'M.', ''], dtype=object)
array(['Pancaldi', 'M.', ''], dtype=object)
array(['Wehinger', 'B.', ''], dtype=object)
array(['Udina', 'M.', ''], dtype=object)
array(['Tadano', 'T.', ''], dtype=object)
array(['Hoffmann', 'M. C.', ''], dtype=object)
array(['Balatsky', 'A. V.', ''], dtype=object)
array(['Bonetti', 'S.', ''], dtype=object)]
|
17,170 |
1309.7410
|
Taro Kunimitsu
|
Kohei Kamada, Tsutomu Kobayashi, Taro Kunimitsu, Masahide Yamaguchi,
Jun'ichi Yokoyama
|
Graceful exit from Higgs G-inflation
|
22 pages, 6 figures; v2, typos corrected, references added, published
in PRD
|
Phys. Rev. D 88, 123518 (2013)
|
10.1103/PhysRevD.88.123518
|
DESY 13-169, RUP-13-10, RESCEU-4/13
|
hep-ph astro-ph.CO gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Higgs G-inflation is a Higgs inflation model with a generalized Galileon term
added to the standard model Higgs field, which realizes inflation compatible
with observations. Recently, it was claimed that the generalized Galileon term
induces instabilities during the oscillation phase, and that the simplest Higgs
G-inflation model inevitably suffers from this problem. In this paper, we
extend the original Higgs G-inflation Lagrangian to a more general form, namely
introducing a higher-order kinetic term and generalizing the form of the
Galileon term, so that the Higgs field can oscillate after inflation without
encountering instabilities. Moreover, it accommodates a large region of the n_s
- r plane, most of which is consistent with current observations, leading us to
expect the detection of B-mode polarization in the cosmic microwave background
in the near future.
|
[{'version': 'v1', 'created': 'Sat, 28 Sep 2013 02:28:35 GMT'}
{'version': 'v2', 'created': 'Mon, 16 Dec 2013 06:51:00 GMT'}]
|
2013-12-17
|
[array(['Kamada', 'Kohei', ''], dtype=object)
array(['Kobayashi', 'Tsutomu', ''], dtype=object)
array(['Kunimitsu', 'Taro', ''], dtype=object)
array(['Yamaguchi', 'Masahide', ''], dtype=object)
array(['Yokoyama', "Jun'ichi", ''], dtype=object)]
|
17,171 |
2301.08893
|
Yuanqing Wang
|
Yuanqing Wang and John D. Chodera
|
Spatial Attention Kinetic Networks with E(n)-Equivariance
| null | null | null | null |
cs.LG physics.app-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Neural networks that are equivariant to rotations, translations, reflections,
and permutations on n-dimensional geometric space have shown promise in
physical modeling for tasks such as accurately but inexpensively modeling
complex potential energy surfaces to guiding the sampling of complex dynamical
systems or forecasting their time evolution. Current state-of-the-art methods
employ spherical harmonics to encode higher-order interactions among particles,
which are computationally expensive. In this paper, we propose a simple
alternative functional form that uses neurally parametrized linear combinations
of edge vectors to achieve equivariance while still universally approximating
node environments. Incorporating this insight, we design spatial attention
kinetic networks with E(n)-equivariance, or SAKE, which are competitive in
many-body system modeling tasks while being significantly faster.
|
[{'version': 'v1', 'created': 'Sat, 21 Jan 2023 05:14:29 GMT'}
{'version': 'v2', 'created': 'Tue, 24 Jan 2023 18:01:05 GMT'}]
|
2023-01-25
|
[array(['Wang', 'Yuanqing', ''], dtype=object)
array(['Chodera', 'John D.', ''], dtype=object)]
|
17,172 |
1802.07697
|
Matthew Streeter
|
Matthew Streeter
|
Approximation Algorithms for Cascading Prediction Models
| null | null | null | null |
cs.LG cs.AI cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present an approximation algorithm that takes a pool of pre-trained models
as input and produces from it a cascaded model with similar accuracy but lower
average-case cost. Applied to state-of-the-art ImageNet classification models,
this yields up to a 2x reduction in floating point multiplications, and up to a
6x reduction in average-case memory I/O. The auto-generated cascades exhibit
intuitive properties, such as using lower-resolution input for easier images
and requiring higher prediction confidence when using a computationally cheaper
model.
|
[{'version': 'v1', 'created': 'Wed, 21 Feb 2018 17:56:05 GMT'}]
|
2018-02-22
|
[array(['Streeter', 'Matthew', ''], dtype=object)]
|
17,173 |
1802.06407
|
Werner Koch
|
Werner Koch, David J. Tannor
|
Systematic elimination of Stokes divergences emanating from complex
phase space caustics
|
5 pages, 3 figures
| null |
10.1063/1.5024467
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Stokes phenomenon refers to the fact that the asymptotic expansion of complex
functions can differ in different regions of the complex plane, and that beyond
the so-called Stokes lines has an unphysical divergence. An important special
case is when the Stokes lines emanate from phase space caustics of a complex
trajectory manifold. In this case, symmetry determines that to second order
there is a double coverage of the space, one portion of which is unphysical.
Building on the seminal but laconic findings of Adachi, we show that the
deviation from second order can be used to rigorously determine the Stokes
lines and therefore the region of the space that should be removed. The method
has applications to wavepacket reconstruction from complex valued classical
trajectories. With a rigorous method in hand for removing unphysical
divergences, we demonstrate excellent wavepacket reconstruction for the Morse,
Quartic, Coulomb and Eckart systems.
|
[{'version': 'v1', 'created': 'Sun, 18 Feb 2018 17:15:41 GMT'}]
|
2018-04-04
|
[array(['Koch', 'Werner', ''], dtype=object)
array(['Tannor', 'David J.', ''], dtype=object)]
|
17,174 |
1007.3849
|
Jarrett Johnson
|
Jarrett L. Johnson, Sadegh Khochfar, Thomas H. Greif, Fabrice Durier
|
Accretion onto black holes formed by direct collapse
|
16 pages; 17 figures, slightly reduced quality; MNRAS in press
| null |
10.1111/j.1365-2966.2010.17491.x
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
One possible scenario for the formation of massive black holes (BHs) in the
early Universe is from the direct collapse of primordial gas in atomic-cooling
dark matter haloes in which the gas is unable to cool efficiently via molecular
transitions. We study the formation of such BHs, as well as the accretion of
gas onto these objects and the high energy radiation emitted in the accretion
process, by carrying out cosmological radiation hydrodynamics simulations. In
the absence of radiative feedback, we find an upper limit to the accretion rate
onto the central object which forms from the initial collapse of hot (~ 10^4 K)
gas of the order of 0.1 MSun per year. This is high enough for the formation of
a supermassive star, the immediate precursor of a BH, with a mass of the order
of 10^5 MSun. Assuming that a fraction of this mass goes into a BH, we track
the subsequent accretion of gas onto the BH self-consistently with the high
energy radiation emitted from the accretion disk. Using a ray-tracing algorithm
to follow the propagation of ionizing radiation, we model in detail the
evolution of the photoionized region which forms around the accreting BH. We
find that BHs with masses of the order of 10^4 MSun initially accrete at close
to the Eddington limit, but that the accretion rate drops to of order 1 percent
of the Eddington limit after ~ 10^6 yr, due to the expansion of the gas near
the BH in response to strong photoheating and radiation pressure. One signature
of the accretion of gas onto BHs formed by direct collapse, as opposed to
massive Pop III star formation, is an extremely high ratio of the luminosity
emitted in He II 1640 to that emitted in H_alpha (or Ly_alpha); this could be
detected by the James Webb Space Telescope. Finally, we briefly discuss
implications for the coevolution of BHs and their host galaxies.
|
[{'version': 'v1', 'created': 'Thu, 22 Jul 2010 10:35:08 GMT'}
{'version': 'v2', 'created': 'Thu, 5 Aug 2010 14:41:40 GMT'}]
|
2015-05-19
|
[array(['Johnson', 'Jarrett L.', ''], dtype=object)
array(['Khochfar', 'Sadegh', ''], dtype=object)
array(['Greif', 'Thomas H.', ''], dtype=object)
array(['Durier', 'Fabrice', ''], dtype=object)]
|
17,175 |
2108.10234
|
Javad Taghizadeh Firouzjaee
|
Javad T. Firouzjaee
|
Energy condition and cosmic censorship conjecture in the perfect fluid
collapse
|
4 pages, 3 figures, the previous analysis was extended to the
cosmological constant background, and some typos are corrected
| null | null | null |
gr-qc
|
http://creativecommons.org/licenses/by/4.0/
|
The hypothesis of cosmic censorship plays a crucial role in classical general
relativity, namely, to ensure that naked singularities would never occur from
the black hole singularity. In this paper, we will present how energy
conditions prohibit forming the naked singularity in the spherical perfect
fluid collapse, and thus the strong cosmic censorship conjecture hold in this
model. We also show that this result can be extended to the cosmological
constant background.
|
[{'version': 'v1', 'created': 'Mon, 23 Aug 2021 15:12:54 GMT'}
{'version': 'v2', 'created': 'Thu, 23 Dec 2021 06:46:50 GMT'}]
|
2021-12-24
|
[array(['Firouzjaee', 'Javad T.', ''], dtype=object)]
|
17,176 |
1606.01178
|
Md. Reza
|
Md. Alimoor Reza and Jana Kosecka
|
Reinforcement Learning for Semantic Segmentation in Indoor Scenes
| null | null | null | null |
cs.CV cs.RO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Future advancements in robot autonomy and sophistication of robotics tasks
rest on robust, efficient, and task-dependent semantic understanding of the
environment. Semantic segmentation is the problem of simultaneous segmentation
and categorization of a partition of sensory data. The majority of current
approaches tackle this using multi-class segmentation and labeling in a
Conditional Random Field (CRF) framework or by generating multiple object
hypotheses and combining them sequentially. In practical settings, the subset
of semantic labels that are needed depend on the task and particular scene and
labelling every single pixel is not always necessary. We pursue these
observations in developing a more modular and flexible approach to multi-class
parsing of RGBD data based on learning strategies for combining independent
binary object-vs-background segmentations in place of the usual monolithic
multi-label CRF approach. Parameters for the independent binary segmentation
models can be learned very efficiently, and the combination strategy---learned
using reinforcement learning---can be set independently and can vary over
different tasks and environments. Accuracy is comparable to state-of-art
methods on a subset of the NYU-V2 dataset of indoor scenes, while providing
additional flexibility and modularity.
|
[{'version': 'v1', 'created': 'Fri, 3 Jun 2016 16:35:58 GMT'}]
|
2016-06-06
|
[array(['Reza', 'Md. Alimoor', ''], dtype=object)
array(['Kosecka', 'Jana', ''], dtype=object)]
|
17,177 |
2112.13622
|
Oleg Musin
|
Alexandr Grebennikov, Xenia Isaeva, Andrei V. Malyutin, Mikhail
Mikhailov, Oleg R. Musin
|
Logarithmic algorithms for fair division problems
|
10 pages, 5 figures
| null | null | null |
math.CO math.MG
|
http://creativecommons.org/licenses/by/4.0/
|
We study the algorithmic complexity of fair division problems with a focus on
minimizing the number of queries needed to find an approximate solution with
desired accuracy. We show for several classes of fair division problems that
under certain natural conditions on sets of preferences, a logarithmic number
of queries with respect to accuracy is sufficient.
|
[{'version': 'v1', 'created': 'Mon, 27 Dec 2021 11:55:10 GMT'}
{'version': 'v2', 'created': 'Sun, 27 Mar 2022 19:00:24 GMT'}
{'version': 'v3', 'created': 'Mon, 11 Apr 2022 07:29:10 GMT'}]
|
2022-04-12
|
[array(['Grebennikov', 'Alexandr', ''], dtype=object)
array(['Isaeva', 'Xenia', ''], dtype=object)
array(['Malyutin', 'Andrei V.', ''], dtype=object)
array(['Mikhailov', 'Mikhail', ''], dtype=object)
array(['Musin', 'Oleg R.', ''], dtype=object)]
|
17,178 |
1708.00201
|
Ting-Chi Huang
|
Ting-Chi Huang (NTHU), Tomotsugu Goto (NTHU), Tetsuya Hashimoto
(NTHU), Nagisa Oi (Tokyo Tech), Hideo Matsuhara (JAXA)
|
An extinction free AGN selection by 18-band SED fitting in mid-infrared
in the AKARI NEP deep field
|
11 pages, 13 figures; accepted for publication in MNRAS; A video
summary: https://www.youtube.com/watch?v=gMfH0vkStqk
| null |
10.1093/mnras/stx1947
| null |
astro-ph.GA astro-ph.CO
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
We have developed an efficient Active Galactic Nucleus (AGN) selection method
using 18-band Spectral Energy Distribution (SED) fitting in mid-infrared
(mid-IR). AGNs are often obscured by gas and dust, and those obscured AGNs tend
to be missed in optical, UV and soft X-ray observations. Mid-IR light can help
us to recover them in an obscuration free way using their thermal emission. On
the other hand, Star-Forming Galaxies (SFG) also have strong PAH emission
features in mid-IR. Hence, establishing an accurate method to separate
populations of AGN and SFG is important. However, in previous mid-IR surveys,
only 3 or 4 filters were available, and thus the selection was limited. We
combined AKARI's continuous 9 mid-IR bands with WISE and Spitzer data to create
18 mid-IR bands for AGN selection. Among 4682 galaxies in the AKARI NEP deep
field, 1388 are selected to be AGN hosts, which implies an AGN fraction of
29.6$\pm$0.8$\%$ (among them 47$\%$ are Seyfert 1.8 and 2). Comparing the
result from SED fitting into WISE and Spitzer colour-colour diagram reveals
that Seyferts are often missed by previous studies. Our result has been tested
by stacking median magnitude for each sample. Using X-ray data from Chandra, we
compared the result of our SED fitting with WISE's colour box selection. We
recovered more X-ray detected AGN than previous methods by 20$\%$.
|
[{'version': 'v1', 'created': 'Tue, 1 Aug 2017 08:32:29 GMT'}
{'version': 'v2', 'created': 'Mon, 28 Aug 2017 08:46:27 GMT'}]
|
2017-08-29
|
[array(['Huang', 'Ting-Chi', '', 'NTHU'], dtype=object)
array(['Goto', 'Tomotsugu', '', 'NTHU'], dtype=object)
array(['Hashimoto', 'Tetsuya', '', 'NTHU'], dtype=object)
array(['Oi', 'Nagisa', '', 'Tokyo Tech'], dtype=object)
array(['Matsuhara', 'Hideo', '', 'JAXA'], dtype=object)]
|
17,179 |
0807.4509
|
David Dumas
|
David Dumas, Richard P. Kent IV
|
Bers slices are Zariski dense
|
8 pages. v2: Revised according to referee report. To appear in
Journal of Topology
| null |
10.1112/jtopol/jtp014
| null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that every Bers slice of quasi-Fuchsian space is Zariski dense in
the character variety.
|
[{'version': 'v1', 'created': 'Mon, 28 Jul 2008 17:53:12 GMT'}
{'version': 'v2', 'created': 'Tue, 5 May 2009 23:53:26 GMT'}]
|
2014-02-26
|
[array(['Dumas', 'David', ''], dtype=object)
array(['Kent', 'Richard P.', 'IV'], dtype=object)]
|
17,180 |
1212.1326
|
Alessandro Fortunati
|
Alessandro Fortunati
|
Fast drift and diffusion in an example of isochronous system through
Windows Method
| null |
Math. Phys. Anal. Geom. 20 (2017), no. 2, 20:7
|
10.1007/s11040-017-9239-z
| null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the problem of Arnold's diffusion in an example of isochronous
system by using a geometrical method known as Windows Method. Despite the
simple features of this example, we show that the absence of an anisochrony
term leads to several substantial difficulties in the application of the
method, requiring some additional devices as non-equally spaced transition
chains and variable windows. In this way we are able to obtain a set of fast
orbits whose drifting time matches, up to a constant, the time obtained via
variational methods.
|
[{'version': 'v1', 'created': 'Thu, 6 Dec 2012 13:41:15 GMT'}]
|
2017-03-01
|
[array(['Fortunati', 'Alessandro', ''], dtype=object)]
|
17,181 |
2102.10868
|
David Yost
|
Jie Wang and David Yost
|
Conditionally decomposable polytopes
|
8 pages, 1 figure
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct for the first time conditionally decomposable $d$-polytopes for
$d \ge 4$. These examples have any number of vertices from $4d-4$ upwards. A
polytope is said to be conditionally decomposable if one polytope
combinatorially equivalent to it is decomposable (with respect to the Minkowski
sum) and another one combinatorially equivalent to it is indecomposable. In our
examples, one has $4d-2$ vertices and is the sum of a line segment and a
bi-pyramid over a prism. The other ones have $4d-4$ vertices, and one of them
is the sum of a line segment and a $2$-fold pyramid over a prism. We show that
the latter examples have the minimum number of vertices among all conditionally
decomposable $d$-polytopes that have a line segment for a summand.
|
[{'version': 'v1', 'created': 'Mon, 22 Feb 2021 10:09:20 GMT'}
{'version': 'v2', 'created': 'Fri, 10 Mar 2023 04:43:20 GMT'}]
|
2023-03-13
|
[array(['Wang', 'Jie', ''], dtype=object)
array(['Yost', 'David', ''], dtype=object)]
|
17,182 |
2206.06150
|
Davide Torlo
|
Sixtine Michel, Davide Torlo, Mario Ricchiuto, R\'emi Abgrall
|
Spectral analysis of high order continuous FEM for hyperbolic PDEs on
triangular meshes: influence of approximation, stabilization, and
time-stepping
|
arXiv admin note: text overlap with arXiv:2103.16158
| null |
10.1007/s10915-022-02087-0
| null |
math.NA cs.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work we study various continuous finite element discretization for
two dimensional hyperbolic partial differential equations, varying the
polynomial space (Lagrangian on equispaced, Lagrangian on quadrature points
(Cubature) and Bernstein), the stabilization techniques (streamline-upwind
Petrov-Galerkin, continuous interior penalty, orthogonal subscale
stabilization) and the time discretization (Runge-Kutta (RK), strong stability
preserving RK and deferred correction). This is an extension of the one
dimensional study by Michel S. et al J. Sci. Comput. (2021), whose results do
not hold in multi-dimensional frameworks. The study ranks these schemes based
on efficiency (most of them are mass-matrix free), stability and dispersion
error, providing the best CFL and stabilization coefficients. The challenges in
two-dimensions are related to the Fourier analysis. Here, we perform it on two
types of periodic triangular meshes varying the angle of the advection, and we
combine all the results for a general stability analysis. Furthermore, we
introduce additional high order viscosity to stabilize the discontinuities, in
order to show how to use these methods for tests of practical interest. All the
theoretical results are thoroughly validated numerically both on linear and
non-linear problems, and error-CPU time curves are provided. Our final
conclusions suggest that Cubature elements combined with SSPRK and OSS
stabilization is the most promising combination.
|
[{'version': 'v1', 'created': 'Mon, 13 Jun 2022 13:35:50 GMT'}]
|
2023-06-16
|
[array(['Michel', 'Sixtine', ''], dtype=object)
array(['Torlo', 'Davide', ''], dtype=object)
array(['Ricchiuto', 'Mario', ''], dtype=object)
array(['Abgrall', 'Rémi', ''], dtype=object)]
|
17,183 |
1405.2440
|
Gerhard Ritschel
|
Gerhard Ritschel, Alexander Eisfeld
|
Analytic Representations of Bath Correlation Functions for Ohmic and
Superohmic Spectral Densities Using Simple Poles
|
16 pages, 9 figures
| null |
10.1063/1.4893931
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a scheme to express a bath correlation function (BCF)
corresponding to a given spectral density (SD) as a sum of damped harmonic
oscillations. Such a representation is needed, for example, in many open
quantum system approaches. To this end we introduce a class of fit functions
that enables us to model ohmic as well as superohmic behavior. We show that
these functions allow for an analytic calculation of the BCF using pole
expansions of the temperature dependent hyperbolic cotangent. We demonstrate
how to use these functions to fit spectral densities exemplarily for cases
encountered in the description of photosynthetic light harvesting complexes.
Finally, we compare absorption spectra obtained for different fits with exact
spectra and show that it is crucial to take properly into account the behavior
at small frequencies when fitting a given SD.
|
[{'version': 'v1', 'created': 'Sat, 10 May 2014 15:06:32 GMT'}
{'version': 'v2', 'created': 'Tue, 19 Aug 2014 11:19:55 GMT'}]
|
2015-06-19
|
[array(['Ritschel', 'Gerhard', ''], dtype=object)
array(['Eisfeld', 'Alexander', ''], dtype=object)]
|
17,184 |
2201.07194
|
Lorenzo Pizzuti
|
L. Pizzuti, I. D. Saltas, A. Biviano, G. Mamon and L. Amendola
|
MG-MAMPOSSt, a code to test gravity at galaxy-cluster scales: a
technical introduction
|
23 pages, two figures. Techinical manual to be submitted to JOSS
| null | null | null |
astro-ph.CO astro-ph.IM
|
http://creativecommons.org/licenses/by/4.0/
|
The \textsc{MG-MAMPOSSt} code is a license-free \textsc{Fortran95} code to
perform tests of General Relativity (GR) through the analyses of kinematical
data of galaxy clusters based on the Jeans' equation. The code is based on the
\textsc{MAMPOSSt} method, and extends the original code through new
parametrisations of the gravitational potential for general families of gravity
theories beyond GR aimed to explain dark energy. \textsc{MG-MAMPOSSt} is
further supplemented with a new capability to produce weak lensing forecasts
for joint kinematic+lensing analysis. This document provides a technical
description of the code's new features, functionality with respect to the
original version, and instructions on its installation and use. Finally, we
explain how the code could be further modified to include a wider family of
gravity models and/or density profiles, that could allow its application in
broader theoretical frameworks as well as other physical systems such as
stellar clusters. A detailed forecast analysis for the modified gravity models
currently implemented in the code can be found in the paper of Pizzuti et al.,
2021.
|
[{'version': 'v1', 'created': 'Tue, 18 Jan 2022 18:45:36 GMT'}
{'version': 'v2', 'created': 'Thu, 21 Jul 2022 17:14:46 GMT'}]
|
2022-07-22
|
[array(['Pizzuti', 'L.', ''], dtype=object)
array(['Saltas', 'I. D.', ''], dtype=object)
array(['Biviano', 'A.', ''], dtype=object)
array(['Mamon', 'G.', ''], dtype=object)
array(['Amendola', 'L.', ''], dtype=object)]
|
17,185 |
1805.08129
|
Zhao Yan-Jun
|
Yan-Jun Zhao, Dongyang Yu, Lin Zhuang, and Wu-Ming Liu
|
Tunable spinful matter wave valve
| null | null | null | null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the transport problem that a spinful matter wave is incident
on a strong localized spin-orbit-coupled Bose-Einstein condensate in optical
lattices, where the localization is admitted by atom interaction only existing
at one particular site, and the spin-orbit coupling arouse spatial rotation of
the spin texture. We find that tuning the spin orientation of the localized
Bose-Einstein condensate can lead to spin-nonreciprocal / spin-reciprocal
transport, meaning the transport properties are dependent on / independent of
the spin orientation of incident waves. In the former case, we obtain the
conditions to achieve transparency, beam-splitting, and blockade of the
incident wave with a given spin orientation, and furthermore the ones to
perfectly isolate incident waves of different spin orientation, while in the
latter, we obtain the condition to maximize the conversion of different spin
states. The result may be useful to develop a novel spinful matter wave valve
that integrates spin switcher, beam-splitter, isolator, and converter. The
method can also be applied to other real systems, e.g., realizing perfect
isolation of spin states in magnetism, which is otherwise rather difficult.
|
[{'version': 'v1', 'created': 'Mon, 21 May 2018 15:38:06 GMT'}]
|
2018-05-22
|
[array(['Zhao', 'Yan-Jun', ''], dtype=object)
array(['Yu', 'Dongyang', ''], dtype=object)
array(['Zhuang', 'Lin', ''], dtype=object)
array(['Liu', 'Wu-Ming', ''], dtype=object)]
|
17,186 |
1910.03159
|
Daniel Barry
|
Daniel Barry and Munir Shah and Merel Keijsers and Humayun Khan and
Banon Hopman
|
xYOLO: A Model For Real-Time Object Detection In Humanoid Soccer On
Low-End Hardware
|
6 pages, 5 figures
| null | null | null |
cs.CV cs.LG cs.RO eess.IV stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
With the emergence of onboard vision processing for areas such as the
internet of things (IoT), edge computing and autonomous robots, there is
increasing demand for computationally efficient convolutional neural network
(CNN) models to perform real-time object detection on resource constraints
hardware devices. Tiny-YOLO is generally considered as one of the faster object
detectors for low-end devices and is the basis for our work. Our experiments on
this network have shown that Tiny-YOLO can achieve 0.14 frames per second(FPS)
on the Raspberry Pi 3 B, which is too slow for soccer playing autonomous
humanoid robots detecting goal and ball objects. In this paper we propose an
adaptation to the YOLO CNN model named xYOLO, that can achieve object detection
at a speed of 9.66 FPS on the Raspberry Pi 3 B. This is achieved by trading an
acceptable amount of accuracy, making the network approximately 70 times faster
than Tiny-YOLO. Greater inference speed-ups were also achieved on a desktop CPU
and GPU. Additionally we contribute an annotated Darknet dataset for goal and
ball detection.
|
[{'version': 'v1', 'created': 'Tue, 8 Oct 2019 01:33:52 GMT'}]
|
2019-10-09
|
[array(['Barry', 'Daniel', ''], dtype=object)
array(['Shah', 'Munir', ''], dtype=object)
array(['Keijsers', 'Merel', ''], dtype=object)
array(['Khan', 'Humayun', ''], dtype=object)
array(['Hopman', 'Banon', ''], dtype=object)]
|
17,187 |
1806.11315
|
Chih-Wei Chang
|
Victor Lee, Chi-Hsun Wu, Zong-Xing Lou, Wei-Li Lee, and Chih-Wei Chang
|
Reply to comment "Divergent and Ultrahigh Thermal Conductivity in
Millimeter-Long Nanotubes"
|
4 pages, 1 figure
| null | null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We regret that PRL did not accept our Reply for publication. We believe that
both our Reply and the original paper (Phys. Rev. Lett. 118, 135901 (2017)) is
sound and correct. We post our reply here and let readers to judge.
|
[{'version': 'v1', 'created': 'Fri, 29 Jun 2018 09:36:01 GMT'}]
|
2018-07-02
|
[array(['Lee', 'Victor', ''], dtype=object)
array(['Wu', 'Chi-Hsun', ''], dtype=object)
array(['Lou', 'Zong-Xing', ''], dtype=object)
array(['Lee', 'Wei-Li', ''], dtype=object)
array(['Chang', 'Chih-Wei', ''], dtype=object)]
|
17,188 |
0711.1185
|
Vladimir Nikiforov
|
Vladimir Nikiforov
|
Complete r-partite subgraphs of dense r-graphs
|
7 pages
| null | null | null |
math.CO
| null |
We determine how large r-partite graphs can be found in r-uniform graphs with
n vertices and Cn^r edges, where C is a slowly decreasing function of n. This
refines results of Erdos from 1964.
|
[{'version': 'v1', 'created': 'Wed, 7 Nov 2007 23:29:27 GMT'}]
|
2007-11-09
|
[array(['Nikiforov', 'Vladimir', ''], dtype=object)]
|
17,189 |
2010.05413
|
Yoshiaki Sofue
|
Yoshiaki Sofue
|
Dark supernova remnant
|
PASJ Letters, accepted, 5 pages, 6 figures
| null |
10.1093/pasj/psaa102
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An almost perfect round hole of CO-line emission with a diameter of 3.7 pc
was found in a molecular cloud (MC) centered on G35.75-0.25 ($l = 35^\circ.75,
b = -0^\circ.25$) at radial velocity of 28 km s$^{-1}$. The hole is quiet in
radio continuum emission, unlike the usual supernova remnants (SNR), and the
molecular edge is only weakly visible in 8 and 24 $\mu$m dust emissions. The
hole may be either a fully evolved molecular bubble around a young stellar
object (YSO), or a relic of a radio-quiet SNR that has already stopped
expansion after rapid evolution in the dense MC as a buried SNR. Because G35.75
exhibits quite different properties from YSO-driven bubbles of the same size,
we prefer the latter interpretation. Existence of such a "dark" SNR would
affect the estimation of the supernova rate, and therefore the star formation
history in the Galaxy.
|
[{'version': 'v1', 'created': 'Mon, 12 Oct 2020 02:45:40 GMT'}
{'version': 'v2', 'created': 'Wed, 14 Oct 2020 09:39:41 GMT'}]
|
2020-11-18
|
[array(['Sofue', 'Yoshiaki', ''], dtype=object)]
|
17,190 |
1205.5722
|
Aina Palau
|
Aina Palau, I. de Gregorio-Monsalvo, \`O. Morata, D. Stamatellos, N.
Hu\'elamo, C. Eiroa, A. Bayo, M. Morales-Calder\'on, H. Bouy, \'A. Ribas, D.
Asmus, D. Barrado
|
A search for pre-substellar cores and proto-brown dwarf candidates in
Taurus: multiwavelength analysis in the B213-L1495 clouds
|
MNRAS, 424, 2778; corrected typos, mass estimate refined in Section
3.2.1 and Section 5.3; conclusions unchanged
| null |
10.1111/j.1365-2966.2012.21390.x
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In an attempt to study whether the formation of brown dwarfs (BDs) takes
place as a scaled-down version of low-mass stars, we conducted IRAM30m/MAMBO-II
observations at 1.2 mm in a sample of 12 proto-BD candidates selected from
Spitzer/IRAC data in the B213-L1495 clouds in Taurus. Subsequent observations
with the CSO at 350 micron, VLA at 3.6 and 6 cm, and IRAM30m/EMIR in the
12CO(1-0), 13CO(1-0), and N2H+(1-0) transitions were carried out toward the two
most promising Spitzer/IRAC source(s), J042118 and J041757. J042118 is
associated with a compact (<10 arcsec or <1400 AU) and faint source at 350
micron, while J041757 is associated with a partially resolved (~16 arcsec or
~2000 AU) and stronger source emitting at centimetre wavelengths with a flat
spectral index. The corresponding masses of the dust condensations are ~1 and
~5 Mjup for J042118 and J041757, respectively. In addition, about 40 arcsec to
the northeast of J041757 we detect a strong and extended submillimetre source,
J041757-NE, which is not associated with NIR/FIR emission down to our detection
limits, but is clearly detected in 13CO and N2H+ at ~7 km/s, and for which we
estimated a total mass of ~100 Mjup, close to the mass required to be
gravitationally bound. In summary, our observational strategy has allowed us to
find in B213-L1495 two proto-BD candidates and one pre-substellar core
candidate, whose properties seem to be consistent with a scaled-down version of
low-mass stars.
|
[{'version': 'v1', 'created': 'Fri, 25 May 2012 15:19:36 GMT'}
{'version': 'v2', 'created': 'Thu, 2 Aug 2012 11:18:16 GMT'}]
|
2015-06-05
|
[array(['Palau', 'Aina', ''], dtype=object)
array(['de Gregorio-Monsalvo', 'I.', ''], dtype=object)
array(['Morata', 'Ò.', ''], dtype=object)
array(['Stamatellos', 'D.', ''], dtype=object)
array(['Huélamo', 'N.', ''], dtype=object)
array(['Eiroa', 'C.', ''], dtype=object)
array(['Bayo', 'A.', ''], dtype=object)
array(['Morales-Calderón', 'M.', ''], dtype=object)
array(['Bouy', 'H.', ''], dtype=object)
array(['Ribas', 'Á.', ''], dtype=object)
array(['Asmus', 'D.', ''], dtype=object)
array(['Barrado', 'D.', ''], dtype=object)]
|
17,191 |
1411.3878
|
Francesco Lacava
|
Francesco Lacava, Donatop Saeli
|
Generators of projective MV-algebras
| null | null | null | null |
math.RA math.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the last decade, interest in projective MV-algebras has grown greatly; see
[1], [5] e [6]. In this paper we establish a necessary and sufficient condition
for n elements of the free n-generator MV-algebra to generate a projective
MV-algebra. This generalizes the characterization of the n free generators
proved in [7]. Using this, some classes of projective generators for
bigenerated MV-algebras, are given. In particular, some effective procedures to
determine, by elementary methods, generators of projective MV-algebras are.
|
[{'version': 'v1', 'created': 'Fri, 14 Nov 2014 12:07:20 GMT'}]
|
2014-11-17
|
[array(['Lacava', 'Francesco', ''], dtype=object)
array(['Saeli', 'Donatop', ''], dtype=object)]
|
17,192 |
2005.12048
|
Zigao Dai
|
Z. G. Dai (NJU)
|
A Magnetar-Asteroid Impact Model for FRB 200428 Associated with an X-ray
Burst from SGR 1935+2154
|
8 pages, 2 figures, a few references added, accepted for publication
in ApJ Letters
| null |
10.3847/2041-8213/aba11b
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Very recently, an extremely bright fast radio burst (FRB) 200428 with two
sub-millisecond pulses was discovered to come from the direction of the
Galactic magnetar SGR 1935+2154, and an X-ray burst (XRB) counterpart was
detected simultaneously. These observations favor magnetar-based
interior-driven models. In this Letter, we propose a different model for FRB
200428 associated with an XRB from SGR 1935+2154, in which a magnetar with high
proper velocity encounters an asteroid of mass $\sim10^{20}\,$g. This infalling
asteroid in the stellar gravitational field is first possibly disrupted tidally
into a great number of fragments at radius $\sim {\rm a\,\,few}$ times
$10^{10}\,$cm, and then slowed around the Alfv$\acute{\rm e}$n radius by an
ultra-strong magnetic field and in the meantime two major fragments of mass
$\sim 10^{17}\,$g that cross magnetic field lines produce two pulses of FRB
200428. The whole asteroid is eventually accreted onto the poles along magnetic
field lines, impacting the stellar surface, creating a photon-e$^\pm$ pair
fireball trapped initially in the stellar magnetosphere, and further leading to
an XRB. We show that this gravitationally-powered model can interpret all of
the observed features self-consistently.
|
[{'version': 'v1', 'created': 'Mon, 25 May 2020 11:44:26 GMT'}
{'version': 'v2', 'created': 'Wed, 27 May 2020 00:43:34 GMT'}
{'version': 'v3', 'created': 'Mon, 15 Jun 2020 11:57:48 GMT'}
{'version': 'v4', 'created': 'Tue, 30 Jun 2020 05:01:34 GMT'}]
|
2020-07-22
|
[array(['Dai', 'Z. G.', '', 'NJU'], dtype=object)]
|
17,193 |
2302.03547
|
Renata Ferrero
|
Rudrajit Banerjee, Maximilian Becker, Renata Ferrero
|
$N$-cutoff regularization for fields on hyperbolic space
|
41 pages, 2 figures
| null | null |
MITP-23-003
|
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We apply a novel background-independent and scale-free quantization and
regularization scheme, the $N$-cutoffs, to scalar fields and metric
fluctuations on a maximally symmetric but non-compact spacetime, namely
hyperbolic space. The $N$-cutoffs are a regularization on the spectrum of the
fields' fluctuation modes, and are implemented on a continuous quantum number
here. For both the scalar field and metric fluctuations, we find that the
inclusion of increasingly many field modes tends to reduce the negative
curvature of the hyperbolic space, leading to vanishing values in the limit of
removing the cutoff. This phenomenon is analogous to the results found for
those fields on a self-consistent spherical background.
|
[{'version': 'v1', 'created': 'Tue, 7 Feb 2023 15:55:53 GMT'}]
|
2023-02-08
|
[array(['Banerjee', 'Rudrajit', ''], dtype=object)
array(['Becker', 'Maximilian', ''], dtype=object)
array(['Ferrero', 'Renata', ''], dtype=object)]
|
17,194 |
2110.08308
|
Sahil Dhoked
|
Sahil Dhoked, Neeraj Mittal
|
Adaptive and Fair Transformation for Recoverable Mutual Exclusion
|
arXiv admin note: substantial text overlap with arXiv:2006.07086
| null | null | null |
cs.DC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Mutual exclusion is one of the most commonly used techniques to handle
contention in concurrent systems. Traditionally, mutual exclusion algorithms
have been designed under the assumption that a process does not fail while
acquiring/releasing a lock or while executing its critical section. However,
failures do occur in real life, potentially leaving the lock in an inconsistent
state. This gives rise to the problem of recoverable mutual exclusion (RME)
that involves designing a mutual exclusion (ME) algorithm that can tolerate
failures, while maintaining safety and liveness properties.
In this work, we present a framework that transforms any algorithm that
solves the RME problem into an algorithm that can also simultaneously adapt to
(1) the number of processes competing for the lock, as well as (2) the number
of failures that have occurred in the recent past, while maintaining the
correctness and performance properties of the underlying RME algorithm.
Additionally, the algorithm constructed as a result of this transformation adds
certain desirable properties like fairness (a variation of FCFS) and bounded
recovery. Assume that the worst-case RMR complexity of a critical section
request in the underlying RME algorithm is $R(n)$. Then, our framework yields
an RME algorithm for which the worst-case RMR complexity of a critical section
request is given by $\mathcal{O}(\min \{\ddot{c}, \sqrt{F+1}, R(n)\})$, where
$\ddot{c}$ denotes the point contention of the request and $F$ denotes the
number of failures in the recent past of the request.
We further extend our framework by presenting a novel memory reclamation
algorithm to bound the worst-case space complexity of the RME algorithm. The
memory reclamation techniques maintain the fairness, performance and
correctness properties of our transformation and is general enough to be
employed to bound the space of other RME algorithms.
|
[{'version': 'v1', 'created': 'Fri, 15 Oct 2021 18:35:24 GMT'}]
|
2021-10-19
|
[array(['Dhoked', 'Sahil', ''], dtype=object)
array(['Mittal', 'Neeraj', ''], dtype=object)]
|
17,195 |
cs/0109099
|
Jonathan Weinberg
|
Jonathan Weinberg
|
ICANN as Regulator
|
v.3; only slightly revised from v.2; originally presented at 29th
TPRC Conference, 2001
| null | null |
TPRC-2001-012
|
cs.CY
| null |
This paper tells the story leading to ICANN's selection of seven new Internet
top level domains in November 2000. In implementing proposals to expand the
name space, ICANN adopted an approach far different from Jon Postel's
lightweight proposals. ICANN staff, in setting the ground rules for considering
new gTLDs, emphasized that only a few applicants would be allowed in, and
imposed strict threshold requirements. Staff determined that the Board should
pick TLDs by looking at all relevant aspects of every proposal, and deciding
which ones presented the best overall combination of a variety of
incommensurable factors. Aspects of the resulting process were predictable:
Anyone familiar with the FCC comparative hearing process for broadcast licenses
can attest that this sort of ad hoc comparison is necessarily subjective,
lending itself to arbitrariness and biased application. Yet the process had
advantages that appealed to ICANN decision-makers. The Board members would be
free to take their best shots, in a situationally sensitive manner, at
advancing the policies they thought important. The approach allowed ICANN to
maintain the greatest degree of control. The end result, though, was a process
stunning in its arbitrariness, a bad parody of fact-bound, situationally
sensitive (rather than rules-based) decision-making.
|
[{'version': 'v1', 'created': 'Mon, 24 Sep 2001 23:48:02 GMT'}
{'version': 'v2', 'created': 'Tue, 23 Oct 2001 11:37:24 GMT'}
{'version': 'v3', 'created': 'Sun, 10 Mar 2002 15:45:57 GMT'}]
|
2007-05-23
|
[array(['Weinberg', 'Jonathan', ''], dtype=object)]
|
17,196 |
hep-ph/0606135
|
Xing-Gang Wu
|
Tao Huang and Xing-Gang Wu
|
A Comprehensive Analysis on the Pion-Photon Transition Form Factor
Beyond the Leading Fock State
|
25 pages, 7 figures. Typo error corrected
|
Int.J.Mod.Phys.A22:3065-3086,2007
|
10.1142/S0217751X07036671
| null |
hep-ph
| null |
We perform a comprehensive analysis of the pion-photon transition form factor
$F_{\pi \gamma}(Q^2)$ involving the transverse momentum corrections with the
present CLEO experimental data, in which the contributions beyond the leading
Fock state have been taken into consideration. As is well-known, the leading
Fock-state contribution dominates of $F_{\pi \gamma}(Q^2)$ at large momentum
transfer ($Q^2$) region. One should include the contributions beyond the
leading Fock state in small $Q^2$ region. In this paper, we construct a
phenomenological expression to estimate the contributions beyond the leading
Fock state based on its asymptotic behavior at $Q^2\to0$. Our present
theoretical results agree well with the experimental data in the whole $Q^2$
region. Then, we extract some useful information of the pionic leading twist-2
distribution amplitude (DA) by comparing our results of $F_{\pi \gamma}(Q^2)$
with the CLEO data. By taking best fit, we have the DA moments,
$a_2(\mu_0^2)=0.002^{+0.063}_{-0.054}$, $a_4(\mu_0^2)=-0.022_{-0.012}^{+0.026}$
and all of higher moments, which are closed to the asymptotic-like behavior of
the pion wavefunction.
|
[{'version': 'v1', 'created': 'Mon, 12 Jun 2006 01:44:40 GMT'}
{'version': 'v2', 'created': 'Wed, 16 Aug 2006 07:24:37 GMT'}
{'version': 'v3', 'created': 'Thu, 21 Sep 2006 09:10:17 GMT'}
{'version': 'v4', 'created': 'Thu, 2 Nov 2006 08:39:20 GMT'}]
|
2008-11-26
|
[array(['Huang', 'Tao', ''], dtype=object)
array(['Wu', 'Xing-Gang', ''], dtype=object)]
|
17,197 |
1812.06945
|
Jon M. Miller
|
A. M. Morales (1), J. M. Miller (1), E. M. Cackett (2), M. T. Reynolds
(1), A. Zoghbi (1) ((1) University of Michigan, (2) Wayne State University)
|
X-ray and UV Monitoring of the Seyfert 1.5 Galaxy Markarian 817
|
Accepted for publication in ApJ
| null |
10.3847/1538-4357/aaeff9
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the results of long-term simultaneous X-ray and UV monitoring of
the nearby (z=0.03145) Seyfert 1.5 galaxy Mrk 817 using the Neil Gehrels Swift
Observatory XRT and UVOT. Prior work has revealed that the X-ray flux from Mrk
817 has increased by a factor of 40 over the last 40 years, whereas the UV
emission has changed by a factor of 2.3. The X-ray emission of Mrk 817 now
compares to some of the brightest Seyferts, but it has been poorly studied in
comparison. We find that the X-ray (0.3-10.0 keV) and the UVM2 (roughly
2000--2500 Angstrom) fluxes have fractional variability amplitudes of 0.35 and
0.18, respectively, over the entire monitoring period (2017 Jan. 2 to 2018 Apr.
20). A cross-correlation analysis is performed on the X-ray (0.3-10.0 keV) and
UVM2 light curves over the entire monitoring period, a period of less frequent
monitoring (2017 Jan. 2 to 2017 Dec. 11), and a period of more frequent
monitoring (2018 Jan. 12 to 2018 Apr. 20). The analysis reveals no significant
correlation between the two at any given lag for all monitoring periods.
Especially given that reverberation studies have found significant lags between
optical/UV continuum bands and broad optical lines in Mrk 817, the lack of a
significant X-ray-UV correlation may point to additional complexities in the
inner or intermediate disk. Mechanical (e.g.,a funnel in the inner disk) and/or
relativistic beaming of the X-ray emission could potentially explain the lack
of a correlation. Alternatively, scattering in an equatorial wind could also
diminish the ability of more isotropic X-ray emission to heat the disk itself.
|
[{'version': 'v1', 'created': 'Mon, 17 Dec 2018 18:33:10 GMT'}]
|
2019-01-16
|
[array(['Morales', 'A. M.', '', 'University of Michigan'], dtype=object)
array(['Miller', 'J. M.', '', 'University of Michigan'], dtype=object)
array(['Cackett', 'E. M.', '', 'Wayne State University'], dtype=object)
array(['Reynolds', 'M. T.', '', 'University of Michigan'], dtype=object)
array(['Zoghbi', 'A.', '', 'University of Michigan'], dtype=object)]
|
17,198 |
gr-qc/9506042
|
Paulo Rodrigues Lima Vargas Moniz
|
P.V. Moniz
|
The Case of the Missing Wormhole State
|
17 pages, Talk given at the 6th Moskow Quantum Gravity Seminar,
Moskow 12-19 June 1995, Russia; some problems with TeX fonts may occur, just
press return
|
Gen.Rel.Grav.28:97-115,1996
|
10.1007/BF02106857
|
reduced version of DAMTP R95/19
|
gr-qc
| null |
The issue concerning the existence of wormhole states in locally
supersymmetric minisuperspace models with matter is addressed. Wormhole states
are apparently absent in models obtained from the more general theory of N=1
supergravity with supermatter. A Hartle-Hawking type solution can be found,
even though some terms (which are scalar field dependent) cannot be determined
in a satisfactory way. A possible cause is investigated here. As far as the
wormhole situation is concerned, we argue here that the type of Lagrange
multipliers and fermionic derivative ordering one uses may make a difference. A
proposal is made for supersymmetric quantum wormholes to also be invested with
a Hilbert space structure, associated with a maximal analytical extension of
the corresponding minisuperspace.
|
[{'version': 'v1', 'created': 'Wed, 21 Jun 1995 14:07:25 GMT'}]
|
2011-04-15
|
[array(['Moniz', 'P. V.', ''], dtype=object)]
|
17,199 |
cond-mat/0410650
|
Masahito Mochizuki
|
Masahito Mochizuki, Masatoshi Imada
|
Orbital Physics in the Perovskite Ti Oxides
|
Review article, 26 pages, to appear in New Journal of Physics
|
New J. Phys. 6 (2004) 154, http://stacks.iop.org/1367-2630/6/154
|
10.1088/1367-2630/6/1/154
| null |
cond-mat.str-el
| null |
In the perovskite Ti oxide RTiO3 (R=rare-earth ions), the Ti t2g orbitals and
spins in the 3d^1 state couple each other through the strong electron
correlations, resulting in a rich variety of orbital-spin phases. The origin
and nature of orbital-spin states of these Mott insulators have been
intensively studied. In this article, we review the studies on orbital physics
in the perovskite titanates. We focus on the following three topics: (1) the
origin and nature of the ferromagnetism as well as the orbital ordering in the
compounds with relatively small R ions such as GdTiO3 and YTiO3, (2) the origin
of the G-type antiferromagnetism and the orbital state in LaTiO3, and (3) the
orbital-spin structures in other AFM(G) compounds with relatively large R ions
(R=Ce, Pr, Nd and Sm). On the basis of these discussions, we discuss the whole
phase diagram together with mechanisms of the magnetic phase transition. We
also show that the Ti t2g degeneracy is inherently lifted in the titanates,
which allows the single-band descriptions of the ground-state and low-energy
electronic structures as a good starting point. Our analyses indicate that
these compounds offer touchstone materials described by the single-band Hubbard
model on the cubic lattice. From this insight, we also reanalyze the hole-doped
titanates. Experimentally revealed filling-dependent and bandwidth-dependent
properties and the critical behavior of the metal-insulator transitions are
discussed in the light of theories based on the single-band Hubbard models.
|
[{'version': 'v1', 'created': 'Tue, 26 Oct 2004 18:27:49 GMT'}]
|
2007-05-23
|
[array(['Mochizuki', 'Masahito', ''], dtype=object)
array(['Imada', 'Masatoshi', ''], dtype=object)]
|
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