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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
7,000 |
hep-ph/0611185
|
David Morrissey
|
Jason L. Evans, David E. Morrissey, James D. Wells
|
Higgs Boson Exempt No-Scale Supersymmetry and its Collider and Cosmology
Implications
|
36 pages, 16 figures
|
Phys.Rev.D75:055017,2007
|
10.1103/PhysRevD.75.055017
|
MCTP-06-32
|
hep-ph
| null |
One of the most straightforward ways to address the flavor problem of
low-energy supersymmetry is to arrange for the scalar soft terms to vanish
simultaneously at a scale $M_{c}$ much larger than the electroweak scale. This
occurs naturally in a number of scenarios, such as no-scale models, gaugino
mediation, and several models with strong conformal dynamics. Unfortunately,
the most basic version of this approach that incorporates gaugino mass
unification and zero scalar masses at the grand unification scale is not
compatible with collider and dark matter constraints. However, experimental
constraints can be satisfied if we exempt the Higgs bosons from flowing to zero
mass value at the high scale. We survey the theoretical constructions that
allow this, and investigate the collider and dark matter consequences. A
generic feature is that the sleptons are relatively light. Because of this,
these models frequently give a significant contribution to the anomalous
magnetic moment of the muon, and neutralino-slepton coannihilation can play an
important role in obtaining an acceptable dark matter relic density.
Furthermore, the light sleptons give rise to a large multiplicity of lepton
events at colliders, including a potentially suggestive clean trilepton signal
at the Tevatron, and a substantial four lepton signature at the LHC.
|
[{'version': 'v1', 'created': 'Tue, 14 Nov 2006 00:09:08 GMT'}]
|
2008-11-26
|
[array(['Evans', 'Jason L.', ''], dtype=object)
array(['Morrissey', 'David E.', ''], dtype=object)
array(['Wells', 'James D.', ''], dtype=object)]
|
7,001 |
0711.3080
|
Masao Ninomiya
|
Holger B. Nielsen and Masaao Ninomiya
|
Complex Action, Prearrangement for Future and Higgs Broadening
|
Workshop
| null | null | null |
physics.gen-ph hep-ph
| null |
We develop some formalism which is very general Feynman path integral in the
case of the action which is allowed to be complex. The major point is that the
effect of the imaginary part of the action (mainly) is to determine which
solution to the equations of motion gets realized. We can therefore look at the
model as a unification of the equations of motion and the ``initial
conditions". We have already earlier argued for some features matching well
with cosmology coming out of the model. A Hamiltonian formalism is put forward,
but it still has to have an extra factor in the probability of a certain
measurement result involving the time after the measurement time. A special
effect to be discussed is a broadening of the width of the Higgs particle. We
reach crudely a changed Breit-Wigner formula that is a normalized square root
of the originally expected one
|
[{'version': 'v1', 'created': 'Tue, 20 Nov 2007 07:42:01 GMT'}]
|
2009-10-13
|
[array(['Nielsen', 'Holger B.', ''], dtype=object)
array(['Ninomiya', 'Masaao', ''], dtype=object)]
|
7,002 |
2304.06676
|
\'Alvaro Samperio
|
\'Alvaro Samperio
|
Sparse recovery of an electrical network based on algebraic variety
fitting and graph sparsification
|
Manuscript is with editorial board in Applicable Analysis and
Discrete Mathematics before it is assigned (or not assigned) to the reviewer
| null | null | null |
math.OC
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
The problem of recovering the topology and parameters of an electrical
network from power and voltage data at all nodes is a problem of fitting both
an algebraic variety and a graph which is often ill-posed. In case there are
multiple electrical networks which fit the data up to a given tolerance, we
seek a solution in which the graph and therefore the algebraic equations
associated with the electrical network are sparse, i.e. with few edges and
terms.
From an applied point of view, frequently it is difficult for system
operators to know the precise information of the network. On the other hand,
improvements on measurement devices increasingly provide more data about
voltage and power, so it is useful to use this amount of data to estimate the
network.
We propose an algorithm for recovering simultaneously a sparse topology and
the cable parameters of any network, combining in an iterative procedure the
resolution of algebraic fitting convex problems and techniques of spectral
graph sparsification. The algorithm is tested on several electrical networks.
|
[{'version': 'v1', 'created': 'Thu, 13 Apr 2023 17:08:00 GMT'}]
|
2023-04-14
|
[array(['Samperio', 'Álvaro', ''], dtype=object)]
|
7,003 |
cond-mat/0101354
|
Philip B. Allen
|
Yiing-Rei Chen and Philip B. Allen
|
Spin versus Lattice Polaron: Prediction for Electron-Doped CaMnO3
|
9 pages with 7 embedded postscript figures and 2 tables
| null |
10.1103/PhysRevB.64.064401
| null |
cond-mat.str-el
| null |
CaMnO3 is a simple bi-partite antiferromagnet(AF) which can be continuously
electron-doped up to LaMnO3. Electrons enter the doubly degenerate E_g subshell
with spins aligned to the S=3/2 core of Mn^4+ (T_2g^3)$. We take the Hubbard
and Hund energies to be effectively infinite. Our model Hamiltonian has two E_g
orbitals per Mn atom, nearest neighbor hopping, nearest neighbor exchange
coupling of the S=3/2 cores, and electron-phonon coupling of Mn orbitals to
adjacent oxygen atoms. We solve this model for light doping. Electrons are
confined in local ferromagnetic (FM) regions (spin polarons) where there
proceeds an interesting competition between spin polarization (spin polarons)
which enlarges the polaron, and lattice polarization (Jahn-Teller polarons)
which makes it smaller. A symmetric 7-atom ferromagnetic cluster (Mn_7^27+) is
the stable result, with net spin S=2 relative to the undoped AF. The distorted
oxygen positions around the electron are predicted. The model also predicts a
critical doping x_c=0.045 where the polaronic insulator becomes unstable
relative to a FM metal.
|
[{'version': 'v1', 'created': 'Tue, 23 Jan 2001 21:48:00 GMT'}]
|
2009-11-07
|
[array(['Chen', 'Yiing-Rei', ''], dtype=object)
array(['Allen', 'Philip B.', ''], dtype=object)]
|
7,004 |
1507.03367
|
Jun-Peng Cao
|
Xiaotian Xu, Junpeng Cao, Shuai Cui, Wen-Li Yang, Kangjie Shi and
Yupeng Wang
|
Off-diagonal Bethe Ansatz solution of the $\tau_2$-model
|
22 pages, 2 figures, 4 tables, published version
|
JHEP 09 (2015) 212
| null | null |
math-ph cond-mat.stat-mech hep-th math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The generic quantum $\tau_2$-model (also known as Baxter-Bazhanov-Stroganov
(BBS) model) with periodic boundary condition is studied via the off-diagonal
Bethe Ansatz method. The eigenvalues of the corresponding transfer matrix
(solutions of the recursive functional relations in $\tau_j$-hierarchy) with
generic site-dependent inhomogeneity parameters are given in terms of an
inhomogeneous T-Q relation with polynomial Q-functions. The associated Bethe
Ansatz equations are obtained. Numerical solutions of the Bethe Ansatz
equations for small number of sites indicate that the inhomogeneous T-Q
relation does indeed give the complete spectrum.
|
[{'version': 'v1', 'created': 'Mon, 13 Jul 2015 09:40:02 GMT'}
{'version': 'v2', 'created': 'Tue, 3 Nov 2015 05:06:14 GMT'}]
|
2015-11-04
|
[array(['Xu', 'Xiaotian', ''], dtype=object)
array(['Cao', 'Junpeng', ''], dtype=object)
array(['Cui', 'Shuai', ''], dtype=object)
array(['Yang', 'Wen-Li', ''], dtype=object)
array(['Shi', 'Kangjie', ''], dtype=object)
array(['Wang', 'Yupeng', ''], dtype=object)]
|
7,005 |
1903.09723
|
Mahmood Etedadialiabadi
|
Mahmood Etedadialiabadi, Su Gao
|
On extensions of partial isometries
|
29 pages
| null | null | null |
math.LO math.FA math.MG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we define a notion of S-extension for a metric space and study
minimality and coherence of S-extensions. We show that every S-extension can be
identified with an algebraic object. We use this algebraic representation to
give a complete characterization of all finite minimal S-extensions of a given
finite metric space and a complete characterization of all minimal coherent
S-extensions. We also define a notion of ultraextensive metric spaces and show
that every countable metric space can be extended to a countable ultraextensive
metric space. %As an application, we show that every countable subset of the
Urysohn metric space can be extended to a countable dense ultraextensive subset
of the Urysohn space. We also show that the isometry group of an infinite
ultraextensive metric space has a dense locally finite subgroup, generalizing
several previously known results. We also study compact ultrametric spaces and
show that every compact ultrametric space can be extended to a compact
ultraextensive ultrametric space.
|
[{'version': 'v1', 'created': 'Fri, 22 Mar 2019 22:21:49 GMT'}
{'version': 'v2', 'created': 'Wed, 13 May 2020 04:54:58 GMT'}
{'version': 'v3', 'created': 'Tue, 20 Apr 2021 15:10:17 GMT'}]
|
2021-04-21
|
[array(['Etedadialiabadi', 'Mahmood', ''], dtype=object)
array(['Gao', 'Su', ''], dtype=object)]
|
7,006 |
2110.13436
|
Chang-Sik Choi
|
Chang-Sik Choi and Fran\c{c}ois Baccelli
|
LOS Coverage Area in Vehicular Networks with Cox distributed Roadside
Units and Relays
|
accepted IEEE Trans. Veh. Technol
| null | null | null |
eess.SP cs.IT math.IT
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
We develop an analytical framework to examine the line-of-sight (LOS)
coverage area in vehicular networks with roadside units (RSU) and vehicle
relays. In practical deployment scenarios, RSUs and vehicle relays are
spatially correlated and we characterize this by employing Cox point processes
to model the locations of RSUs and vehicle relays simultaneously. Leveraging
the random blockage model, we model the LOS coverage area as Boolean models on
these Cox point processes. The LOS coverage area is then evaluated by its area
fraction. We show that relays can increase the area fraction of LOS coverage by
nearly 50\% even when RSUs and relays are spatially correlated. By presenting a
stochastic geometry model for a vehicular network with RSUs and relays and then
by providing a tool to capture its LOS coverage, our work assesses the
viability of vehicle relays for modern vehicular networks exploiting LOS
coverage.
|
[{'version': 'v1', 'created': 'Tue, 26 Oct 2021 06:29:20 GMT'}
{'version': 'v2', 'created': 'Thu, 19 Jan 2023 03:17:00 GMT'}]
|
2023-01-20
|
[array(['Choi', 'Chang-Sik', ''], dtype=object)
array(['Baccelli', 'François', ''], dtype=object)]
|
7,007 |
2208.00311
|
Zixuan Jiang
|
Zixuan Jiang, Jiaqi Gu, Mingjie Liu, David Z. Pan
|
Delving into Effective Gradient Matching for Dataset Condensation
|
12 pages
| null | null | null |
cs.LG cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
As deep learning models and datasets rapidly scale up, network training is
extremely time-consuming and resource-costly. Instead of training on the entire
dataset, learning with a small synthetic dataset becomes an efficient solution.
Extensive research has been explored in the direction of dataset condensation,
among which gradient matching achieves state-of-the-art performance. The
gradient matching method directly targets the training dynamics by matching the
gradient when training on the original and synthetic datasets. However, there
are limited deep investigations into the principle and effectiveness of this
method. In this work, we delve into the gradient matching method from a
comprehensive perspective and answer the critical questions of what, how, and
where to match. We propose to match the multi-level gradients to involve both
intra-class and inter-class gradient information. We demonstrate that the
distance function should focus on the angle, considering the magnitude
simultaneously to delay the overfitting. An overfitting-aware adaptive learning
step strategy is also proposed to trim unnecessary optimization steps for
algorithmic efficiency improvement. Ablation and comparison experiments
demonstrate that our proposed methodology shows superior accuracy, efficiency,
and generalization compared to prior work.
|
[{'version': 'v1', 'created': 'Sat, 30 Jul 2022 21:31:10 GMT'}]
|
2022-08-02
|
[array(['Jiang', 'Zixuan', ''], dtype=object)
array(['Gu', 'Jiaqi', ''], dtype=object)
array(['Liu', 'Mingjie', ''], dtype=object)
array(['Pan', 'David Z.', ''], dtype=object)]
|
7,008 |
1907.11195
|
Xiao Wang
|
Xiao Wang, Zhijie Wang, Yolande M. Pengetnze, Barry S. Lachman, Vikas
Chowdhry
|
Deep Learning Models to Predict Pediatric Asthma Emergency Department
Visits
| null | null | null | null |
stat.ML cs.LG stat.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Pediatric asthma is the most prevalent chronic childhood illness, afflicting
about 6.2 million children in the United States. However, asthma could be
better managed by identifying and avoiding triggers, educating about
medications and proper disease management strategies. This research utilizes
deep learning methodologies to predict asthma-related emergency department (ED)
visit within 3 months using Medicaid claims data. We compare prediction results
against traditional statistical classification model - penalized Lasso logistic
regression, which we trained and have deployed since 2015. The results have
indicated that deep learning model Artificial Neural Networks (ANN) slightly
outperforms (with AUC = 0.845) the Lasso logistic regression (with AUC =
0.842). The reason may come from the nonlinear nature of ANN.
|
[{'version': 'v1', 'created': 'Thu, 25 Jul 2019 16:56:56 GMT'}]
|
2019-07-26
|
[array(['Wang', 'Xiao', ''], dtype=object)
array(['Wang', 'Zhijie', ''], dtype=object)
array(['Pengetnze', 'Yolande M.', ''], dtype=object)
array(['Lachman', 'Barry S.', ''], dtype=object)
array(['Chowdhry', 'Vikas', ''], dtype=object)]
|
7,009 |
2304.14991
|
Prashant Kumar
|
Prashant Kumar, F. D. M. Haldane
|
A numerical study of bounds in the correlations of fractional quantum
Hall states
|
12 pages, 2 figures. Added references. Minor revisions
| null | null | null |
cond-mat.str-el cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We numerically compute the guiding center static structure factor
$\bar{S}(\boldsymbol k)$ of various fractional quantum Hall (FQH) states to
$\mathcal{O}\left((k\ell)^6\right)$. Employing density matrix renormalization
group on an infinite cylinder of circumference $L_y$, we study the
two-dimensional problem using $L_y/\ell \gg 1$. The main findings of our work
are: 1) the ground states that deviate away from the ideal conformal block
wavefunctions, do not saturate the Haldane bound, and 2) the coefficient of
$O\left((k\ell)^6\right)$ term appears to be bounded above by a value predicted
by field theories proposed in the literature.
|
[{'version': 'v1', 'created': 'Fri, 28 Apr 2023 17:22:15 GMT'}
{'version': 'v2', 'created': 'Mon, 15 May 2023 15:21:53 GMT'}]
|
2023-05-16
|
[array(['Kumar', 'Prashant', ''], dtype=object)
array(['Haldane', 'F. D. M.', ''], dtype=object)]
|
7,010 |
1008.1032
|
Abhimanyu Mitra
|
Abhimanyu Mitra and Sidney I. Resnick
|
Modeling total expenditure on warranty claims
|
31 pages, 5 figures
| null | null | null |
q-fin.GN math.PR q-fin.RM stat.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We approximate the distribution of total expenditure of a retail company over
warranty claims incurred in a fixed period [0, T], say the following quarter.
We consider two kinds of warranty policies, namely, the non-renewing free
replacement warranty policy and the non-renewing pro-rata warranty policy. Our
approximation holds under modest assumptions on the distribution of the sales
process of the warranted item and the nature of arrivals of warranty claims. We
propose a method of using historical data to statistically estimate the
parameters of the approximate distribution. Our methodology is applied to the
warranty claims data from a large car manufacturer for a single car model and
model year.
|
[{'version': 'v1', 'created': 'Thu, 5 Aug 2010 18:01:46 GMT'}]
|
2010-08-06
|
[array(['Mitra', 'Abhimanyu', ''], dtype=object)
array(['Resnick', 'Sidney I.', ''], dtype=object)]
|
7,011 |
2007.04052
|
Takaaki Nomura
|
Takaaki Nomura, Hiroshi Okada, Seokhoon Yun
|
Axion and neutrino mass from a hidden gauge symmetry model
|
15 pages, 2 figures
| null | null |
KIAS-P20034, APCTP Pre2020-012
|
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a model of dark sector described by gauged hidden $U(1)_H$
symmetry in which neutrino masses are generated at one-loop level and axion is
induced by assigning Peccei-Quinn charge to fermions in dark sector relevantly.
Then our scenario connects exotic fermion mass generation, neutrino mass matrix
and axion through scalar fields associated with $U(1)_H$ and Peccei-Quinn
symmetry breaking. We investigate neutrino mass formula, lepton flavor
violation, anomalous magnetic moment of muon, dark matter relic density and
axion couplings, which are originated from interactions among our dark sector
and the standard model particles.
|
[{'version': 'v1', 'created': 'Wed, 8 Jul 2020 12:00:07 GMT'}]
|
2020-07-09
|
[array(['Nomura', 'Takaaki', ''], dtype=object)
array(['Okada', 'Hiroshi', ''], dtype=object)
array(['Yun', 'Seokhoon', ''], dtype=object)]
|
7,012 |
1503.08419
|
Marie-Therese Wolfram
|
Martin Burger and Alexander Lorz and Marie-Therese Wolfram
|
On a Boltzmann mean field model for knowledge growth
|
6 figures
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we analyze a Boltzmann type mean field game model for knowledge
growth, which was proposed by Lucas and Moll. We discuss the underlying
mathematical model, which consists of a coupled system of a Boltzmann type
equation for the agent density and a Hamilton-Jacobi-Bellman equation for the
optimal strategy. We study the analytic features of each equation separately
and show local in time existence and uniqueness for the fully coupled system.
Furthermore we focus on the construction and existence of special solutions,
which relate to exponential growth in time - so called balanced growth path
solutions. Finally we illustrate the behavior of solutions for the full system
and the balanced growth path equations with numerical simulations.
|
[{'version': 'v1', 'created': 'Sun, 29 Mar 2015 11:27:16 GMT'}
{'version': 'v2', 'created': 'Sat, 25 Apr 2015 08:10:16 GMT'}
{'version': 'v3', 'created': 'Wed, 13 May 2015 04:48:58 GMT'}]
|
2015-05-14
|
[array(['Burger', 'Martin', ''], dtype=object)
array(['Lorz', 'Alexander', ''], dtype=object)
array(['Wolfram', 'Marie-Therese', ''], dtype=object)]
|
7,013 |
1507.00309
|
Mark Lewis
|
Mark L. Lewis
|
Variations on average character degrees and $p$-nilpotence
|
14 pages
| null | null | null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that if $p$ is an odd prime, $G$ is a solvable group, and the
average value of the irreducible characters of $G$ whose degrees are not
divisible by $p$ is strictly less than $2(p+1)/(p+3)$, then $G$ is
$p$-nilpotent. We show that there are examples that are not $p$-nilpotent where
this bound is met for every prime $p$. We then prove a number of variations of
this result.
|
[{'version': 'v1', 'created': 'Wed, 1 Jul 2015 18:35:43 GMT'}]
|
2015-07-02
|
[array(['Lewis', 'Mark L.', ''], dtype=object)]
|
7,014 |
cond-mat/0111527
|
Andrei Zaikin
|
Dmitri S. Golubev, Andrei D. Zaikin and Gerd Sch\"on
|
Comment on "Absence of electron dephasing at zero temperature"
|
2 pages, no figures. In response to cond-mat/0112063 we have added a
footnote and a few references to articles which describe how irreversibility
and dissipation arise in a quantum mechanical description, starting from a
Hamiltonian which obeys time reversal symmetry
| null | null | null |
cond-mat.mes-hall
| null |
The recent claim by Kirkpatrick and Belitz (cond-mat/0111398) that Ward
identities could be used to prove the absence of electron dephasing at T=0
contains serious flaws. These authors try to draw conclusions about dephasing
from an analysis of the diffuson, which is not sensitive to this process. The
Cooperon, which does contain this information, is analyzed only in time
reversal symmetric situations, which by assumption excludes any relaxation and
dephasing. Hence, their analysis remains inconclusive for the problem in
question.
|
[{'version': 'v1', 'created': 'Wed, 28 Nov 2001 12:35:24 GMT'}
{'version': 'v2', 'created': 'Thu, 13 Dec 2001 13:50:31 GMT'}]
|
2007-05-23
|
[array(['Golubev', 'Dmitri S.', ''], dtype=object)
array(['Zaikin', 'Andrei D.', ''], dtype=object)
array(['Schön', 'Gerd', ''], dtype=object)]
|
7,015 |
1810.09078
|
Siddhardha Balemarthy
|
Siddhardha Balemarthy, Atul Sajjanhar, James Xi Zheng
|
Our Practice Of Using Machine Learning To Recognize Species By Voice
|
16 pages
| null | null | null |
cs.SD cs.LG eess.AS stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
As the technology is advancing, audio recognition in machine learning is
improved as well. Research in audio recognition has traditionally focused on
speech. Living creatures (especially the small ones) are part of the whole
ecosystem, monitoring as well as maintaining them are important tasks. Species
such as animals and birds are tending to change their activities as well as
their habitats due to the adverse effects on the environment or due to other
natural or man-made calamities. For those in far deserted areas, we will not
have any idea about their existence until we can continuously monitor them.
Continuous monitoring will take a lot of hard work and labor. If there is no
continuous monitoring, then there might be instances where endangered species
may encounter dangerous situations. The best way to monitor those species are
through audio recognition. Classifying sound can be a difficult task even for
humans. Powerful audio signals and their processing techniques make it possible
to detect audio of various species. There might be many ways wherein audio
recognition can be done. We can train machines either by pre-recorded audio
files or by recording them live and detecting them. The audio of species can be
detected by removing all the background noise and echoes. Smallest sound is
considered as a syllable. Extracting various syllables is the process we are
focusing on which is known as audio recognition in terms of Machine Learning
(ML).
|
[{'version': 'v1', 'created': 'Mon, 22 Oct 2018 04:23:17 GMT'}]
|
2018-10-23
|
[array(['Balemarthy', 'Siddhardha', ''], dtype=object)
array(['Sajjanhar', 'Atul', ''], dtype=object)
array(['Zheng', 'James Xi', ''], dtype=object)]
|
7,016 |
2202.11573
|
Jo\~ao Braz
|
Jo\~ao E. H. Braz, P. Ribeiro, H. Ter\c{c}as
|
Hydrodynamic signatures and spectral properties of the quantum vortex
|
(v. 2) Changes in the language and structure of the abstract,
introduction and conclusion; minimal change in the title. Typos corrected;
slight change in nomenclature (incl. figures) in the main body of the text.
References added
| null |
10.1103/PhysRevA.106.053305
| null |
cond-mat.quant-gas cond-mat.other
|
http://creativecommons.org/licenses/by/4.0/
|
We characterize the low-lying excitations of a quantum vortex in a
quasi-two-dimensional Bose-Einstein condensate (BEC) using the standard
definition of the density of states (DOS) and a modified version that is
sensitive to complementary aspects of the excitation's spectrum. The latter
proves to be particularly relevant to studying the polaronic state realized
when an impurity is embedded in a quantum vortex. We establish that the
impurity becomes sensitive to the transversal fluctuations of the vortex, via
its remnant kelvon mode, and to the phase fluctuations of the BEC
Nambu-Goldstone mode. The presence of the vortex yields an anomalous excitation
spectrum with a finite energy gap and non-linear DOS at low energies. We find
that the high sensitivity of the kelvon mode to external potentials provides a
channel of quantum-level control over impurities trapped in a vortex. This
extra control channel may be of practical use for the proposal of using
vortex-trapped impurities as qubit units for quantum information processing.
|
[{'version': 'v1', 'created': 'Wed, 23 Feb 2022 15:44:07 GMT'}
{'version': 'v2', 'created': 'Tue, 12 Apr 2022 16:48:09 GMT'}]
|
2022-11-23
|
[array(['Braz', 'João E. H.', ''], dtype=object)
array(['Ribeiro', 'P.', ''], dtype=object)
array(['Terças', 'H.', ''], dtype=object)]
|
7,017 |
1405.5837
|
Takashi Yamamoto
|
T. Yamamoto, S. Onoda, T. Ohshima, T. Teraji, K. Watanabe, S. Koizumi,
T. Umeda, L. P. McGuinness, C. M\"uller, B. Naydenov, F. Dolde, H. Fedder, J.
Honert, M. L. Markham, D. J. Twitchen, J. Wrachtrup, F. Jelezko, and J. Isoya
|
Isotopic identification of engineered nitrogen-vacancy spin qubits in
ultrapure diamond
| null |
Phys. Rev. B 90, 081117 (2014)
|
10.1103/PhysRevB.90.081117
| null |
cond-mat.mes-hall cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Nitrogen impurities help to stabilize the negatively-charged-state of NV$^-$
in diamond, whereas magnetic fluctuations from nitrogen spins lead to
decoherence of NV$^-$ qubits. It is not known what donor concentration
optimizes these conflicting requirements. Here we used 10-MeV $^{15}$N$^{3+}$
ion implantation to create NV$^-$ in ultrapure diamond. Optically detected
magnetic resonance of single centers revealed a high creation yield of
$40\pm3$% from $^{15}$N$^{3+}$ ions and an additional yield of $56\pm3$% from
$^{14}$N impurities. High-temperature anneal was used to reduce residual
defects, and charge stable NV$^-$, even in a dilute $^{14}$N impurity
concentration of 0.06 ppb were created with long coherence times.
|
[{'version': 'v1', 'created': 'Thu, 22 May 2014 17:46:56 GMT'}
{'version': 'v2', 'created': 'Wed, 3 Sep 2014 09:02:23 GMT'}]
|
2014-09-05
|
[array(['Yamamoto', 'T.', ''], dtype=object)
array(['Onoda', 'S.', ''], dtype=object)
array(['Ohshima', 'T.', ''], dtype=object)
array(['Teraji', 'T.', ''], dtype=object)
array(['Watanabe', 'K.', ''], dtype=object)
array(['Koizumi', 'S.', ''], dtype=object)
array(['Umeda', 'T.', ''], dtype=object)
array(['McGuinness', 'L. P.', ''], dtype=object)
array(['Müller', 'C.', ''], dtype=object)
array(['Naydenov', 'B.', ''], dtype=object)
array(['Dolde', 'F.', ''], dtype=object)
array(['Fedder', 'H.', ''], dtype=object)
array(['Honert', 'J.', ''], dtype=object)
array(['Markham', 'M. L.', ''], dtype=object)
array(['Twitchen', 'D. J.', ''], dtype=object)
array(['Wrachtrup', 'J.', ''], dtype=object)
array(['Jelezko', 'F.', ''], dtype=object)
array(['Isoya', 'J.', ''], dtype=object)]
|
7,018 |
1903.07006
|
Jun Li
|
Jun Li, Minya Xu, Ping-Shou Zhong, Lingjun Li
|
Change Point Detection in the Mean of High-Dimensional Time Series Data
under Dependence
| null | null | null | null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
High-dimensional time series are characterized by a large number of
measurements and complex dependence, and often involve abrupt change points. We
propose a new procedure to detect change points in the mean of high-dimensional
time series data. The proposed procedure incorporates spatial and temporal
dependence of data and is able to test and estimate the change point occurred
on the boundary of time series. We study its asymptotic properties under mild
conditions. Simulation studies demonstrate its robust performance through the
comparison with other existing methods. Our procedure is applied to an fMRI
dataset.
|
[{'version': 'v1', 'created': 'Sun, 17 Mar 2019 00:06:18 GMT'}]
|
2019-03-19
|
[array(['Li', 'Jun', ''], dtype=object)
array(['Xu', 'Minya', ''], dtype=object)
array(['Zhong', 'Ping-Shou', ''], dtype=object)
array(['Li', 'Lingjun', ''], dtype=object)]
|
7,019 |
2201.12677
|
Ryan McKenna
|
Ryan McKenna, Brett Mullins, Daniel Sheldon, Gerome Miklau
|
AIM: An Adaptive and Iterative Mechanism for Differentially Private
Synthetic Data
| null | null | null | null |
cs.DB
|
http://creativecommons.org/licenses/by/4.0/
|
We propose AIM, a novel algorithm for differentially private synthetic data
generation. \aim is a workload-adaptive algorithm, within the paradigm of
algorithms that first selects a set of queries, then privately measures those
queries, and finally generates synthetic data from the noisy measurements. It
uses a set of innovative features to iteratively select the most useful
measurements, reflecting both their relevance to the workload and their value
in approximating the input data. We also provide analytic expressions to bound
per-query error with high probability, which can be used to construct
confidence intervals and inform users about the accuracy of generated data. We
show empirically that AIM consistently outperforms a wide variety of existing
mechanisms across a variety of experimental settings.
|
[{'version': 'v1', 'created': 'Sat, 29 Jan 2022 23:02:24 GMT'}]
|
2022-02-01
|
[array(['McKenna', 'Ryan', ''], dtype=object)
array(['Mullins', 'Brett', ''], dtype=object)
array(['Sheldon', 'Daniel', ''], dtype=object)
array(['Miklau', 'Gerome', ''], dtype=object)]
|
7,020 |
1012.3140
|
Anatoly Manita
|
Anatoly Manita
|
Time scales in large systems of Brownian particles with stochastic
synchronization
|
12 pages
| null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a system $x(t)=(x_{1}(t),...,x_{N}(t))$ consisting of $N$
Brownian particles with synchronizing interaction between them occurring at
random time moments $\{\tau_{n}\}_{n=1}^{\infty}$. Under assumption that the
free Brownian motions and the sequence $\{\tau_{n}\}_{n=1}^{\infty}$ are
independent we study asymptotic properties of the system when both the
dimension~$N$ and the time~$t$ go to infinity. We find three time scales
$t=t(N)$ of qualitatively different behavior of the system.
|
[{'version': 'v1', 'created': 'Tue, 14 Dec 2010 19:24:07 GMT'}]
|
2010-12-15
|
[array(['Manita', 'Anatoly', ''], dtype=object)]
|
7,021 |
1407.4144
|
Ephraim Fischbach
|
J.M. Nistor, J.M. Heim, E. Fischbach, J.H. Jenkins, P.A. Sturrock
|
Phenomenology of Rate-Related Nonlinear Effects in Nuclear Spectroscopy
|
10 pages, 4 figures, 3 tables. Submitted to Nucl. Instrum. Methods A
| null | null | null |
nucl-ex hep-ph physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A series of recent reports suggest that the decay rates of several isotopes
may have been influenced by solar activity (perhaps by solar neutrinos). A
mechanism in which neutrinos or antineutrinos can influence the decay process
suggests that a sample of decaying nuclei emitting neutrinos could affect its
own rate of decay. Past experiments have searched for this 'self-induced decay'
(SID) effect by measuring deviations from the expected decay rate for highly
active samples of varying geometries. Here, we show that the SID effect closely
resembles the behavior of rate-related losses due to dead-time, and hence that
standard dead-time corrections can result in the removal of any SID-related
behavior. We conclude by describing experiments which could disentangle SID
effects from those arising from dead-time.
|
[{'version': 'v1', 'created': 'Tue, 15 Jul 2014 20:50:30 GMT'}]
|
2014-07-17
|
[array(['Nistor', 'J. M.', ''], dtype=object)
array(['Heim', 'J. M.', ''], dtype=object)
array(['Fischbach', 'E.', ''], dtype=object)
array(['Jenkins', 'J. H.', ''], dtype=object)
array(['Sturrock', 'P. A.', ''], dtype=object)]
|
7,022 |
1202.4615
|
Hakan Volkan Senavci
|
H.V. \c{S}enavc{\i}
|
Surface Brightness Variation of the Contact Binary SW Lac: Clues From
Doppler Imaging
|
This study was presented at the IAU Symposium 282, From Interacting
Binaries to Exoplanets: Essential Modeling Tools Slovakia, July 18-22 2011.
This manuscript will be published in IAUS 282 conference proceedings edited
by Mercedes T. Richards & Ivan Hubeny (Cambridge: Cambridge University
Press), p.496 - 497, as ISBN 9781107019829
| null |
10.1017/S1743921311028250
| null |
astro-ph.SR
|
http://creativecommons.org/licenses/by/3.0/
|
In this study, we present the preliminary light curve analysis of the contact
binary SW Lac, using B, V light curves of the system spanning 2 years (2009 -
2010). During the spot modeling process, we used the information coming from
the Doppler maps of the system, which was performed using the high resolution
and phase dependent spectra obtained at the 2.1 m Otto Struve Telescope of the
McDonald Observatory, in 2009. The results showed that the spot modeling from
the light curve analysis are in accordance with the Doppler maps, while the
non-circular spot modeling technique is needed in order to obtain much better
and reliable spot models.
|
[{'version': 'v1', 'created': 'Tue, 21 Feb 2012 12:09:00 GMT'}]
|
2016-08-14
|
[array(['Şenavcı', 'H. V.', ''], dtype=object)]
|
7,023 |
1502.07484
|
Fr\'ed\'eric Maffray
|
Fr\'ed\'eric Maffray
|
Graphs with no induced wheel or antiwheel
| null | null | null | null |
math.CO cs.DM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A wheel is a graph that consists of a chordless cycle of length at least 4
plus a vertex with at least three neighbors on the cycle. It was shown recently
that detecting induced wheels is an NP-complete problem. In contrast, it is
shown here that graphs that contain no wheel and no antiwheel have a very
simple structure and consequently can be recognized in polynomial time.
|
[{'version': 'v1', 'created': 'Thu, 26 Feb 2015 09:55:09 GMT'}]
|
2015-02-27
|
[array(['Maffray', 'Frédéric', ''], dtype=object)]
|
7,024 |
2105.00226
|
Pavao Andricevic
|
Anastasiia Glushkova, Pavao Andri\v{c}evi\'c, Rita Smajda, B\'alint
N\'afr\'adi, M\'arton Koll\'ar, Veljko Djoki\'c, Alla Arakcheeva, L\'aszl\'o
Forr\'o, Raphael Pugin and Endre Horv\'ath
|
Ultrasensitive 3D Aerosol-Jet-Printed Perovskite X-Ray Photodetector
|
25 pages, 4 figures
|
ACS Nano 2021, 15, 3, 4077-4084
|
10.1021/acsnano.0c07993
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
X-ray photon detection is important for a wide range of applications. The
highest demand, however, comes from medical imaging, which requires
cost-effective, high-resolution detectors operating at low photon flux,
therefore stimulating the search for novel materials and new approaches.
Recently, hybrid halide perovskite CH3NH3PbI3 (MAPbI3) has attracted
considerable attention due to its advantageous optoelectronic properties and
low fabrication costs. The presence of heavy atoms, providing a high scattering
cross-section for photons, makes this material a perfect candidate for X-ray
detection. Despite the already-successful demonstrations of efficiency in
detection, its integration into standard microelectronics fabrication processes
is still pending. Here, we demonstrate a promising method for building X-ray
detector units by 3D aerosol jet printing with a record sensitivity of 2.2 x
108 {\mu}C Gyair-1cm-2 when detecting 8 keV photons at dose-rates below 1 Gy/s
(detection limit 0.12 Gy/s), a four-fold improvement on the best-in-class
devices. An introduction of MAPbI3-based detection into medical imaging would
significantly reduce health hazards related to the strongly ionizing X-rays
photons.
|
[{'version': 'v1', 'created': 'Sat, 1 May 2021 11:44:31 GMT'}]
|
2021-05-04
|
[array(['Glushkova', 'Anastasiia', ''], dtype=object)
array(['Andričević', 'Pavao', ''], dtype=object)
array(['Smajda', 'Rita', ''], dtype=object)
array(['Náfrádi', 'Bálint', ''], dtype=object)
array(['Kollár', 'Márton', ''], dtype=object)
array(['Djokić', 'Veljko', ''], dtype=object)
array(['Arakcheeva', 'Alla', ''], dtype=object)
array(['Forró', 'László', ''], dtype=object)
array(['Pugin', 'Raphael', ''], dtype=object)
array(['Horváth', 'Endre', ''], dtype=object)]
|
7,025 |
cond-mat/9308003
|
Enzo Marinari
|
Enzo Marinari and Giorgio Parisi
|
On Toy Aging
|
15 pages including epsf figures (uufiles), Roma La Sapienza 962-93
| null |
10.1088/0305-4470/26/22/004
| null |
cond-mat hep-lat hep-th
| null |
We consider the dynamics of a simple one dimensional model and we discuss the
phenomenon of aging (i.e., the strong dependence of the dynamical correlation
functions over the waiting time). Our model is the so-called random random
walk, the toy model of a directed polymer evolving in a random medium.
|
[{'version': 'v1', 'created': 'Tue, 3 Aug 1993 18:32:14 GMT'}]
|
2009-10-22
|
[array(['Marinari', 'Enzo', ''], dtype=object)
array(['Parisi', 'Giorgio', ''], dtype=object)]
|
7,026 |
1111.4372
|
Bruno Bauwens
|
Bruno Bauwens, Alexander Shen
|
An additivity theorem for plain Kolmogorov complexity
|
4 pages
| null | null | null |
cs.CC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove the formula C(a,b) = K(a|C(a,b)) + C(b|a,C(a,b)) + O(1) that
expresses the plain complexity of a pair in terms of prefix and plain
conditional complexities of its components.
|
[{'version': 'v1', 'created': 'Fri, 18 Nov 2011 14:27:43 GMT'}
{'version': 'v2', 'created': 'Wed, 15 Feb 2012 18:26:32 GMT'}]
|
2012-02-16
|
[array(['Bauwens', 'Bruno', ''], dtype=object)
array(['Shen', 'Alexander', ''], dtype=object)]
|
7,027 |
1502.01880
|
Helio M. de Oliveira
|
E.F. Melo and H.M. de Oliveira
|
A Fingerprint-based Access Control using Principal Component Analysis
and Edge Detection
|
5 pages, 9 figures. SBrT/IEEE International Telecommunication
Symposium, ITS 2010, Manaus, AM, Brazil
| null |
10.14209/SBRT.2010.63
| null |
cs.CV cs.CR stat.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents a novel approach for deciding on the appropriateness or
not of an acquired fingerprint image into a given database. The process begins
with the assembly of a training base in an image space constructed by combining
Principal Component Analysis (PCA) and edge detection. Then, the parameter H, a
new feature that helps in the decision making about the relevance of a
fingerprint image in databases, is derived from a relationship between
Euclidean and Mahalanobian distances. This procedure ends with the lifting of
the curve of the Receiver Operating Characteristic (ROC), where the thresholds
defined on the parameter H are chosen according to the acceptable rates of
false positives and false negatives.
|
[{'version': 'v1', 'created': 'Fri, 6 Feb 2015 13:31:54 GMT'}]
|
2019-09-27
|
[array(['Melo', 'E. F.', ''], dtype=object)
array(['de Oliveira', 'H. M.', ''], dtype=object)]
|
7,028 |
1611.00017
|
Helen Russell
|
H.R. Russell, M. McDonald, B.R. McNamara, A.C. Fabian, P.E.J. Nulsen,
M.B. Bayliss, B.A. Benson, M. Brodwin, J.E. Carlstrom, A.C. Edge, J.
Hlavacek-Larrondo, D.P. Marrone, C.L. Reichardt and J.D. Vieira
|
ALMA observations of massive molecular gas filaments encasing radio
bubbles in the Phoenix cluster
|
10 pages, 5 figures, accepted to ApJ
| null |
10.3847/1538-4357/836/1/130
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report new ALMA observations of the CO(3-2) line emission from the
$2.1\pm0.3\times10^{10}\rm\thinspace M_{\odot}$ molecular gas reservoir in the
central galaxy of the Phoenix cluster. The cold molecular gas is fuelling a
vigorous starburst at a rate of $500-800\rm\thinspace M_{\odot}\rm\; yr^{-1}$
and powerful black hole activity in the form of both intense quasar radiation
and radio jets. The radio jets have inflated huge bubbles filled with
relativistic plasma into the hot, X-ray atmospheres surrounding the host
galaxy. The ALMA observations show that extended filaments of molecular gas,
each $10-20\rm\; kpc$ long with a mass of several billion solar masses, are
located along the peripheries of the radio bubbles. The smooth velocity
gradients and narrow line widths along each filament reveal massive, ordered
molecular gas flows around each bubble, which are inconsistent with
gravitational free-fall. The molecular clouds have been lifted directly by the
radio bubbles, or formed via thermal instabilities induced in low entropy gas
lifted in the updraft of the bubbles. These new data provide compelling
evidence for close coupling between the radio bubbles and the cold gas, which
is essential to explain the self-regulation of feedback. The very feedback
mechanism that heats hot atmospheres and suppresses star formation may also
paradoxically stimulate production of the cold gas required to sustain feedback
in massive galaxies.
|
[{'version': 'v1', 'created': 'Mon, 31 Oct 2016 20:04:21 GMT'}
{'version': 'v2', 'created': 'Thu, 15 Dec 2016 15:35:28 GMT'}]
|
2017-02-22
|
[array(['Russell', 'H. R.', ''], dtype=object)
array(['McDonald', 'M.', ''], dtype=object)
array(['McNamara', 'B. R.', ''], dtype=object)
array(['Fabian', 'A. C.', ''], dtype=object)
array(['Nulsen', 'P. E. J.', ''], dtype=object)
array(['Bayliss', 'M. B.', ''], dtype=object)
array(['Benson', 'B. A.', ''], dtype=object)
array(['Brodwin', 'M.', ''], dtype=object)
array(['Carlstrom', 'J. E.', ''], dtype=object)
array(['Edge', 'A. C.', ''], dtype=object)
array(['Hlavacek-Larrondo', 'J.', ''], dtype=object)
array(['Marrone', 'D. P.', ''], dtype=object)
array(['Reichardt', 'C. L.', ''], dtype=object)
array(['Vieira', 'J. D.', ''], dtype=object)]
|
7,029 |
1108.2045
|
Julian Tercero Becerra-Sagredo
|
Julian Becerra-Sagredo, Carlos Malaga and Francisco Mandujano
|
A novel and scalable Multigrid algorithm for many-core architectures
|
9 pages, 5 figures
| null | null | null |
cs.NA math.NA physics.comp-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Multigrid algorithms are among the fastest iterative methods known today for
solving large linear and some non-linear systems of equations. Greatly
optimized for serial operation, they still have a great potential for
parallelism not fully realized. In this work, we present a novel multigrid
algorithm designed to work entirely inside many-core architectures like the
graphics processing units (GPUs), without memory transfers between the GPU and
the central processing unit (CPU), avoiding low bandwitdth communications. The
algorithm is denoted as the high occupancy multigrid (HOMG) because it makes
use of entire grid operations with interpolations and relaxations fused into
one task, providing useful work for every thread in the grid. For a given
accuracy, its number of operations scale linearly with the total number of
nodes in the grid. Perfect scalability is observed for a large number of
processors.
|
[{'version': 'v1', 'created': 'Tue, 9 Aug 2011 20:39:54 GMT'}]
|
2011-08-11
|
[array(['Becerra-Sagredo', 'Julian', ''], dtype=object)
array(['Malaga', 'Carlos', ''], dtype=object)
array(['Mandujano', 'Francisco', ''], dtype=object)]
|
7,030 |
0809.0267
|
Niko Naumann
|
Niko Naumann, Markus Spitzweck, Paul Arne {\O}stv{\ae}r
|
Chern classes, K-theory and Landweber exactness over nonregular base
schemes
|
minor revision, essentially in final form, to appear in Proceedings
of the conference on Motives and Algebraic Cycles: A Conference Dedicated to
the Mathematical Heritage of Spencer J. Bloch
| null | null | null |
math.AG math.AT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The purpose of this paper is twofold. First, we use the motivic Landweber
exact functor theorem to deduce that the Bott inverted infinite projective
space is homotopy algebraic $K$-theory. The argument is considerably shorther
than any other known proofs and serves well as an illustration of the
effectiveness of Landweber exactness. Second, we dispense with the regularity
assumption on the base scheme which is often implicitly required in the notion
of oriented motivic ring spectra. The latter allows us to verify the motivic
Landweber exact functor theorem and the universal property of the algebraic
cobordism spectrum for every noetherian base scheme of finite Krull dimension.
|
[{'version': 'v1', 'created': 'Mon, 1 Sep 2008 15:23:06 GMT'}
{'version': 'v2', 'created': 'Fri, 17 Oct 2008 17:03:31 GMT'}]
|
2008-10-17
|
[array(['Naumann', 'Niko', ''], dtype=object)
array(['Spitzweck', 'Markus', ''], dtype=object)
array(['Østvær', 'Paul Arne', ''], dtype=object)]
|
7,031 |
hep-ex/0612009
|
Kevin Lannon
|
Kevin Lannon (for the CDF collaboration)
|
Search for New Phenomena in the CDF Top Quark Sample
|
to appear in Proceedings of SUSY06, the 14th International Conference
on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine,
California, 12-17 June 2006
|
AIP Conf.Proc.903:109-112,2007
|
10.1063/1.2735137
|
FERMILAB-CONF-06-427-E
|
hep-ex
| null |
We present recent results from CDF in the search for new phenomena appearing
in the top quark samples. These results use data from proton-antiproton
collisions at sqrt{s} = 1.96 TeV corresponding to an integrated luminosity
ranging from 195 pb^-1 to 760 pb^-1. No deviations are observed from the
Standard Model expectations, so upper limits on the size of possible new
phenomena are set.
|
[{'version': 'v1', 'created': 'Tue, 5 Dec 2006 23:05:20 GMT'}]
|
2019-08-14
|
[array(['Lannon', 'Kevin', '', 'for the CDF collaboration'], dtype=object)]
|
7,032 |
1905.13433
|
Weiwei Kong
|
Weiwei Kong and Renato D.C. Monteiro
|
An accelerated inexact proximal point method for solving
nonconvex-concave min-max problems
| null | null | null | null |
math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents smoothing schemes for obtaining approximate stationary
points of unconstrained or linearly-constrained composite nonconvex-concave
min-max (and hence nonsmooth) problems by applying well-known algorithms to
composite smooth approximations of the original problems. More specifically, in
the unconstrained (resp. constrained) case, approximate stationary points of
the original problem are obtained by applying, to its composite smooth
approximation, an accelerated inexact proximal point (resp. quadratic penalty)
method presented in a previous paper by the authors. Iteration complexity
bounds for both smoothing schemes are also established. Finally, numerical
results are given to demonstrate the efficiency of the unconstrained smoothing
scheme.
|
[{'version': 'v1', 'created': 'Fri, 31 May 2019 06:15:09 GMT'}
{'version': 'v2', 'created': 'Thu, 16 Jan 2020 19:59:53 GMT'}
{'version': 'v3', 'created': 'Wed, 3 Mar 2021 22:50:04 GMT'}
{'version': 'v4', 'created': 'Thu, 17 Jun 2021 14:23:45 GMT'}]
|
2021-06-18
|
[array(['Kong', 'Weiwei', ''], dtype=object)
array(['Monteiro', 'Renato D. C.', ''], dtype=object)]
|
7,033 |
1512.03403
|
Vincent Vennin
|
Vincent Vennin, Kazuya Koyama, David Wands
|
Inflation with an extra light scalar field after Planck
|
18 pages without appendices (total 28 pages), 3 figures, 6 tables,
matches the published version in JCAP (typo in last table of appendix E
fixed)
|
JCAP 1603 (2016) 03, 024
|
10.1088/1475-7516/2016/03/024
| null |
astro-ph.CO hep-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Bayesian inference techniques are used to investigate situations where an
additional light scalar field is present during inflation and reheating. This
includes (but is not limited to) curvaton-type models. We design a numerical
pipeline where $\simeq 200$ inflaton setups $\times\, 10$ reheating scenarios
$= 2000$ models are implemented and we present the results for a few
prototypical potentials. We find that single-field models are remarkably robust
under the introduction of light scalar degrees of freedom. Models that are
ruled out at the single-field level are not improved in general, because good
values of the spectral index and the tensor-to-scalar ratio can only be
obtained for very fine-tuned values of the extra field parameters and/or when
large non-Gaussianities are produced. The only exception is quartic large-field
inflation, so that the best models after Planck are of two kinds: plateau
potentials, regardless of whether an extra field is added or not, and quartic
large-field inflation with an extra light scalar field, in some specific
reheating scenarios. Using Bayesian complexity, we also find that more
parameters are constrained for the models we study than for their single-field
versions. This is because the added parameters not only contribute to the
reheating kinematics but also to the cosmological perturbations themselves, to
which the added field contributes. The interplay between these two effects lead
to a suppression of degeneracies that is responsible for having more
constrained parameters.
|
[{'version': 'v1', 'created': 'Thu, 10 Dec 2015 20:28:55 GMT'}
{'version': 'v2', 'created': 'Wed, 24 Aug 2016 14:38:28 GMT'}
{'version': 'v3', 'created': 'Tue, 12 Sep 2017 08:06:35 GMT'}]
|
2017-09-13
|
[array(['Vennin', 'Vincent', ''], dtype=object)
array(['Koyama', 'Kazuya', ''], dtype=object)
array(['Wands', 'David', ''], dtype=object)]
|
7,034 |
physics/9810028
|
Boris Dubetsky
|
B. Dubetsky and P. R. Berman
|
Matter wave interference using two-level atoms and resonant optical
fields
|
14 pages, 3 figures
| null |
10.1103/PhysRevA.59.2269
| null |
physics.atom-ph
| null |
A theory of matter wave interference is developed in which resonant optical
fields interact with two-level atoms. When recoil effects are included, spatial
modulation of the atomic density can occur for times that are greater than or
comparable with the inverse recoil frequency. In this regime, the atoms exhibit
matter-wave interference. Two specific atom field geometries are considered. In
the first, atoms characterized by a homogeneous velocity distribution are
subjected to a single radiation pulse. The pulse excites the atoms which then
decay back to the lower state. The spatial modulation of the total atomic
density is calculated as a function of $t$, where $t$ is the time following the
pulse. In contrast to the normal Talbot effect, the spatially modulated density
is not a periodic function of $ t,$ owing to spontaneous emission; however,
after a sufficiently long time, the contribution from spontaneous processes no
longer plays a role and the Talbot periodicity is restored. In the second
atom-field geometry, there are two pulses separated by an interval $T$. The
atomic velocity distribution in this case is assumed to be inhomogeneously
broadened. In contrast to the normal Talbot-Lau effect, the spatially modulated
density is not a periodic function of $T$, owing to spontaneous emission;
however, for sufficiently long time, the contribution from spontaneous
processes no longer plays a role and the Talbot periodicity is restored. The
structure of the spatially modulated density is studied, and is found to mirror
the atomic density following the first pulse. The spatially modulated atomic
density serves as an indirect probe of the distribution of spontaneously
emitted radiation.
|
[{'version': 'v1', 'created': 'Thu, 15 Oct 1998 19:34:43 GMT'}]
|
2009-10-31
|
[array(['Dubetsky', 'B.', ''], dtype=object)
array(['Berman', 'P. R.', ''], dtype=object)]
|
7,035 |
1810.09675
|
Yuehaw Khoo
|
Yuehaw Khoo and Lexing Ying
|
SwitchNet: a neural network model for forward and inverse scattering
problems
|
19 pages, 7 figures
| null | null | null |
math.NA cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a novel neural network architecture, SwitchNet, for solving the
wave equation based inverse scattering problems via providing maps between the
scatterers and the scattered field (and vice versa). The main difficulty of
using a neural network for this problem is that a scatterer has a global impact
on the scattered wave field, rendering typical convolutional neural network
with local connections inapplicable. While it is possible to deal with such a
problem using a fully connected network, the number of parameters grows
quadratically with the size of the input and output data. By leveraging the
inherent low-rank structure of the scattering problems and introducing a novel
switching layer with sparse connections, the SwitchNet architecture uses much
fewer parameters and facilitates the training process. Numerical experiments
show promising accuracy in learning the forward and inverse maps between the
scatterers and the scattered wave field.
|
[{'version': 'v1', 'created': 'Tue, 23 Oct 2018 06:15:33 GMT'}]
|
2018-10-29
|
[array(['Khoo', 'Yuehaw', ''], dtype=object)
array(['Ying', 'Lexing', ''], dtype=object)]
|
7,036 |
1206.2310
|
Clara Salas
|
G. Chachamis, A. Sabio Vera, C. Salas
|
The non-forward BFKL equation and infrared effects
|
4 pages, 7 figures, proceedings of the XX Workshop on Deep-Inelastic
Scattering and Related Subjects, 26-30 March, University of Bonn (2012)
| null | null | null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An iterative solution best suited for a Monte Carlo implementation is
presented for the non-forward BFKL equation in a generic color representation.
We introduce running coupling effects compatible with bootstrap to all orders
in perturbation theory. A numerical analysis is given showing a smooth
transition from a hard to a soft pomeron when accounting for running effects.
|
[{'version': 'v1', 'created': 'Mon, 11 Jun 2012 18:49:58 GMT'}]
|
2012-06-12
|
[array(['Chachamis', 'G.', ''], dtype=object)
array(['Vera', 'A. Sabio', ''], dtype=object)
array(['Salas', 'C.', ''], dtype=object)]
|
7,037 |
1805.03304
|
Jonas Latz
|
Christian Kahle, Kei Fong Lam, Jonas Latz, Elisabeth Ullmann
|
Bayesian parameter identification in Cahn-Hilliard models for biological
growth
| null |
SIAM/ASA J. Uncertain. Quantif. 7(2), p. 526-552, 2019
|
10.1137/18M1210034
| null |
math.NA math.AP stat.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the inverse problem of parameter estimation in a diffuse
interface model for tumour growth. The model consists of a fourth-order
Cahn-Hilliard system and contains three phenomenological parameters: the tumour
proliferation rate, the nutrient consumption rate, and the chemotactic
sensitivity. We study the inverse problem within the Bayesian framework and
construct the likelihood and noise for two typical observation settings. One
setting involves an infinite-dimensional data space where we observe the full
tumour. In the second setting we observe only the tumour volume, hence the data
space is finite-dimensional. We show the well-posedness of the posterior
measure for both settings, building upon and improving the analytical results
in [C. Kahle and K.F. Lam, Appl. Math. Optim. (2018)]. A numerical example
involving synthetic data is presented in which the posterior measure is
numerically approximated by the sequential Monte Carlo approach with tempering.
|
[{'version': 'v1', 'created': 'Tue, 8 May 2018 22:07:07 GMT'}
{'version': 'v2', 'created': 'Tue, 28 Aug 2018 09:12:52 GMT'}
{'version': 'v3', 'created': 'Fri, 15 Feb 2019 10:33:24 GMT'}]
|
2019-05-10
|
[array(['Kahle', 'Christian', ''], dtype=object)
array(['Lam', 'Kei Fong', ''], dtype=object)
array(['Latz', 'Jonas', ''], dtype=object)
array(['Ullmann', 'Elisabeth', ''], dtype=object)]
|
7,038 |
2108.06677
|
Chen Wang
|
Tianxing Mei, Chen Wang and Jianfeng Yao
|
On singular values of data matrices with general independent columns
| null | null | null | null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we analyse singular values of a large $p\times n$ data matrix
$\mathbf{X}_n= (\mathbf{x}_{n1},\ldots,\mathbf{x}_{nn})$ where the column
$\mathbf{x}_{nj}$'s are independent $p$-dimensional vectors, possibly with
different distributions. Such data matrices are common in high-dimensional
statistics.
Under a key assumption that the covariance matrices
$\mathbf{\Sigma}_{nj}=\text{Cov}(\mathbf{x}_{nj})$ can be asymptotically
simultaneously diagonalizable, and appropriate convergence of their spectra, we
establish a limiting distribution for the singular values of $\mathbf{X}_n$
when both dimension $p$ and $n$ grow to infinity in a comparable magnitude.
The matrix model goes beyond and includes many existing works on different
types of sample covariance matrices, including the weighted sample covariance
matrix, the Gram matrix model and the sample covariance matrix of linear times
series models. Furthermore, we develop two applications of our general
approach.
First, we obtain the existence and uniqueness of a new limiting spectral
distribution of realized covariance matrices for a multi-dimensional diffusion
process with anisotropic time-varying co-volatility processes.
Secondly, we derive the limiting spectral distribution for singular values of
the data matrix for a recent matrix-valued auto-regressive model.
Finally, for a generalized finite mixture model, the limiting spectral
distribution for singular values of the data matrix is obtained.
|
[{'version': 'v1', 'created': 'Sun, 15 Aug 2021 07:24:50 GMT'}]
|
2021-08-17
|
[array(['Mei', 'Tianxing', ''], dtype=object)
array(['Wang', 'Chen', ''], dtype=object)
array(['Yao', 'Jianfeng', ''], dtype=object)]
|
7,039 |
1505.03907
|
Eleonora Guarini
|
E. Guarini, M. Neumann, U. Bafile, M. Celli, D. Colognesi, E. Farhi,
Y. Calzavara
|
Velocity autocorrelation in liquid para-hydrogen by quantum simulations
for first-principle computations of the neutron cross sections
| null | null |
10.1103/PhysRevB.92.104303
| null |
cond-mat.dis-nn physics.chem-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Accurate knowledge of the single-molecule (self) translational dynamics of
liquid para-H2 is an essential requirement for the calculation of the neutron
scattering properties of this important quantum liquid. We show that, by using
Centroid Molecular Dynamics (CMD) quantum simulations of the velocity
autocorrelation function, calculations of the total neutron cross section (TCS)
remarkably agree with experimental data at the thermal and epithermal incident
neutron energies where para-H2 dynamics is actually dominated by the self
contributions. This result shows that a proper account of the quantum nature of
the fluid, as provided by CMD, is a necessary and very effective condition to
obtain the correct absolute-scale cross section values directly from
first-principle computations of the double differential cross section, and
without the need of introducing any empirically adjusted quantity. At
subthermal incident energies, appropriate modeling of the para-H2
intermolecular (distinct) dynamics also becomes crucial, but quantum
simulations are not yet able to cope with it. Existing simple models which
account for the distinct part provide an appropriate correction of self-only
calculations and bring the computed results in reasonable accord with TCS
experimental data available until very recently. However, if just published
cross section measurements in the cold range are considered, the agreement
turns out to be by far superior and very satisfactory. The possible origin of
slight residual differences will be commented and suggest further computational
and experimental efforts. Nonetheless, the ability to reproduce the total cross
section in the wide range between 1 and 900 meV represents an encouraging and
important validation step of the CMD method and of the present simple
algorithm.
|
[{'version': 'v1', 'created': 'Thu, 14 May 2015 22:24:42 GMT'}]
|
2015-10-28
|
[array(['Guarini', 'E.', ''], dtype=object)
array(['Neumann', 'M.', ''], dtype=object)
array(['Bafile', 'U.', ''], dtype=object)
array(['Celli', 'M.', ''], dtype=object)
array(['Colognesi', 'D.', ''], dtype=object)
array(['Farhi', 'E.', ''], dtype=object)
array(['Calzavara', 'Y.', ''], dtype=object)]
|
7,040 |
1306.0244
|
Peter Nelson
|
Peter Nelson
|
Projective geometries in exponentially dense matroids. II
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show for each positive integer $a$ that, if $\mathcal{M}$ is a
minor-closed class of matroids not containing all rank-$(a+1)$ uniform
matroids, then there exists an integer $c$ such that either every rank-$r$
matroid in $\mathcal{M}$ can be covered by at most $r^c$ rank-$a$ sets, or
$\mathcal{M}$ contains the GF$(q)$-representable matroids for some prime power
$q$ and every rank-$r$ matroid in $\mathcal{M}$ can be covered by at most
$cq^r$ rank-$a$ sets. In the latter case, this determines the maximum density
of matroids in $\mathcal{M}$ up to a constant factor.
|
[{'version': 'v1', 'created': 'Sun, 2 Jun 2013 19:33:00 GMT'}]
|
2013-06-04
|
[array(['Nelson', 'Peter', ''], dtype=object)]
|
7,041 |
math/0506205
|
Branko Malesevic
|
Branko Malesevic
|
Some inequalities for Kurepa's function
| null |
Journal of Inequalities in Pure and Applied Mathematics, Volume 5,
Issue 4, Article 84, 2004
| null | null |
math.CV math.NT
| null |
In this paper we consider Kurepa's function $K(z)$ \cite{Kurepa_71}. We give
some recurrent relations for Kurepa's function via appropriate sequences of
rational functions and gamma function. Also, we give some inequalities for
Kurepa's function $K(x)$ for positive values of $x$.
|
[{'version': 'v1', 'created': 'Fri, 10 Jun 2005 15:35:51 GMT'}]
|
2007-05-23
|
[array(['Malesevic', 'Branko', ''], dtype=object)]
|
7,042 |
1609.09272
|
Giorgio Picci
|
Giorgio Picci and Bin Zhu
|
A New Algorithm for Circulant Rational Covariance Extension and
Applications to Finite-interval Smoothing
|
Submitted
| null | null | null |
stat.ME math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The partial stochastic realization of periodic processes from finite
covariance data has recently been solved by Lindquist and Picci based on convex
optimization of a generalized entropy functional. The meaning and the role of
this criterion have an unclear origin. In this paper we propose a solution
based on a nonlinear generalization of the classical Yule-Walker type equations
and on a new iterative algorithm which is shown to converge to the same
(unique) solution of the variational problem. This provides a conceptual link
to the variational principles and at the same time yields a robust algorithm
which can for example be successfully applied to finite-interval smoothing
problems providing a simpler procedure if compared with the classical
Riccati-based calculations.
|
[{'version': 'v1', 'created': 'Thu, 29 Sep 2016 09:39:42 GMT'}]
|
2016-09-30
|
[array(['Picci', 'Giorgio', ''], dtype=object)
array(['Zhu', 'Bin', ''], dtype=object)]
|
7,043 |
2102.00890
|
Aleksei Ivanov
|
Aleksei V. Ivanov, Tushar K. Ghosh, Elvar \"O. J\'onsson, Hannes
J\'onsson
|
Mn Dimer can be Described Accurately with Density Functional
Calculations when Self-interaction Correction is Applied
|
20 pages, 4 figures
|
J. Phys. Chem. Lett. 2021, 12, 17, 4240-4246
|
10.1021/acs.jpclett.1c00364
| null |
physics.chem-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Qualitatively incorrect results are obtained for the Mn dimer in density
functional theory calculations using the generalized gradient approximation
(GGA) and similar results are obtained from local density and meta-GGA
functionals. The coupling is predicted to be ferromagnetic rather than
antiferromagnetic and the bond between the atoms is predicted to be an order of
magnitude too strong and about an {\AA}ngstr{\o}m too short. Explicit,
self-interaction correction (SIC) applied to a commonly used GGA energy
functional, however, provides close agreement with both experimental data and
high-level, multi-reference wave function calculations. These results show that
the failure is not due to strong correlation but rather the single electron
self-interaction that is necessarily introduced in estimates of the classical
Coulomb and exchange-correlation energy when only the total electron density is
used as input. The corrected functional depends explicitly on the orbital
densities and can, therefore, avoid the introduction of self-Coulomb
interaction. The error arises because of over-stabilization of bonding
$d$-states in the minority spin channel resulting from an overestimate of the
$d$-electron self-interaction in the semi-local exchange-correlation
functionals. Since the computational effort in the self-interaction corrected
calculations scales with system size in the same way as for regular semi-local
functional calculations, this approach provides a way to calculate properties
of Mn nanoclusters as well as biomolecules and extended solids where Mn dimers
and larger cluster are present, while multi-reference wave function
calculations can only be applied to small systems.
|
[{'version': 'v1', 'created': 'Mon, 1 Feb 2021 15:03:10 GMT'}
{'version': 'v2', 'created': 'Mon, 17 May 2021 11:56:23 GMT'}]
|
2021-05-18
|
[array(['Ivanov', 'Aleksei V.', ''], dtype=object)
array(['Ghosh', 'Tushar K.', ''], dtype=object)
array(['Jónsson', 'Elvar Ö.', ''], dtype=object)
array(['Jónsson', 'Hannes', ''], dtype=object)]
|
7,044 |
cond-mat/9706232
|
Dr. Paolo Sibani
|
Paolo Sibani (Fysisk Institut, Odense Universitet)
|
Local state space geometry and thermal metastability in complex
landscapes: the spin-glass case
|
16 pages, 8 figures, RevTeX, to appear in Physica A The figures have
been improved and the text somewhat shortened. New references have been added
| null |
10.1016/S0378-4371(98)00263-5
| null |
cond-mat.dis-nn cond-mat.stat-mech
| null |
A simple geometrical characterization of configuration space neighborhoods of
local energy minima in spin glass landscapes is found by exhaustive search.
Combined with previous Monte Carlo investigations of thermal domain growth, it
allows a discussion of the connection between real and configuration space
descriptions of low temperature relaxational dynamics. We argue that the part
of state-space corresponding to a single growing domain is adequately modeled
by a hierarchically organized set of states and that thermal (meta)stability in
spin glasses is related to the nearly exponential local density of states
present within each trap.
|
[{'version': 'v1', 'created': 'Mon, 23 Jun 1997 21:54:07 GMT'}
{'version': 'v2', 'created': 'Wed, 6 May 1998 09:12:54 GMT'}]
|
2015-06-25
|
[array(['Sibani', 'Paolo', '', 'Fysisk Institut, Odense Universitet'],
dtype=object) ]
|
7,045 |
2203.15011
|
Felix von Oppen
|
Harald Schmid, Jacob F. Steiner, Katharina J. Franke, and Felix von
Oppen
|
Quantum Yu-Shiba-Rusinov dimers
|
17 pages, 12 figures
| null |
10.1103/PhysRevB.105.235406
| null |
cond-mat.mes-hall cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Magnetic adatoms on a superconducting substrate undergo a quantum phase
transition as their exchange coupling to the conduction electrons increases.
For quantum spins, this transition is accompanied by screening of the adatom
spin. Here, we explore the consequences of this screening for the phase
diagrams and subgap excitation spectra of dimers of magnetic adatoms coupled by
hybridization of their Yu-Shiba-Rusinov states and spin-spin interactions. We
specifically account for higher spins, single-ion anisotropy,
Ruderman-Kittel-Kasuya-Yosida coupling, and Dzyaloshinsky-Moriya interactions
relevant in transition-metal and rare-earth systems. Our flexible approach
based on a zero-bandwidth approximation provides detailed physical insight and
is in excellent qualitative agreement with available numerical-renormalization
group calculations on monomers and dimers. Remarkably, we find that even in the
limit of large impurity spins or strong single-ion anisotropy, the phase
diagrams for dimers of quantum spins remain qualitatively distinct from phase
diagrams based on classical spins, highlighting the need for a theory of
quantum Yu-Shiba-Rusinov dimers.
|
[{'version': 'v1', 'created': 'Mon, 28 Mar 2022 18:19:19 GMT'}]
|
2022-06-22
|
[array(['Schmid', 'Harald', ''], dtype=object)
array(['Steiner', 'Jacob F.', ''], dtype=object)
array(['Franke', 'Katharina J.', ''], dtype=object)
array(['von Oppen', 'Felix', ''], dtype=object)]
|
7,046 |
1711.04817
|
Irina Gaynanova
|
Irina Gaynanova and Tianying Wang
|
Sparse quadratic classification rules via linear dimension reduction
| null |
Journal of Multivariate Analysis 2019, Vol. 169, 278-299
|
10.1016/j.jmva.2018.09.011
| null |
stat.ML stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the problem of high-dimensional classification between the two
groups with unequal covariance matrices. Rather than estimating the full
quadratic discriminant rule, we propose to perform simultaneous variable
selection and linear dimension reduction on original data, with the subsequent
application of quadratic discriminant analysis on the reduced space. In
contrast to quadratic discriminant analysis, the proposed framework doesn't
require estimation of precision matrices and scales linearly with the number of
measurements, making it especially attractive for the use on high-dimensional
datasets. We support the methodology with theoretical guarantees on variable
selection consistency, and empirical comparison with competing approaches. We
apply the method to gene expression data of breast cancer patients, and confirm
the crucial importance of ESR1 gene in differentiating estrogen receptor
status.
|
[{'version': 'v1', 'created': 'Mon, 13 Nov 2017 19:52:06 GMT'}
{'version': 'v2', 'created': 'Tue, 16 Jan 2018 22:09:21 GMT'}]
|
2021-04-01
|
[array(['Gaynanova', 'Irina', ''], dtype=object)
array(['Wang', 'Tianying', ''], dtype=object)]
|
7,047 |
2002.08239
|
Jorge Beltr\'an
|
Irene Cortes, Jorge Beltran, Arturo de la Escalera and Fernando Garcia
|
siaNMS: Non-Maximum Suppression with Siamese Networks for Multi-Camera
3D Object Detection
|
Submitted to IEEE Intelligent Vehicles Symposium 2020 (IV2020)
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The rapid development of embedded hardware in autonomous vehicles broadens
their computational capabilities, thus bringing the possibility to mount more
complete sensor setups able to handle driving scenarios of higher complexity.
As a result, new challenges such as multiple detections of the same object have
to be addressed. In this work, a siamese network is integrated into the
pipeline of a well-known 3D object detector approach to suppress duplicate
proposals coming from different cameras via re-identification. Additionally,
associations are exploited to enhance the 3D box regression of the object by
aggregating their corresponding LiDAR frustums. The experimental evaluation on
the nuScenes dataset shows that the proposed method outperforms traditional NMS
approaches.
|
[{'version': 'v1', 'created': 'Wed, 19 Feb 2020 15:32:38 GMT'}]
|
2020-02-20
|
[array(['Cortes', 'Irene', ''], dtype=object)
array(['Beltran', 'Jorge', ''], dtype=object)
array(['de la Escalera', 'Arturo', ''], dtype=object)
array(['Garcia', 'Fernando', ''], dtype=object)]
|
7,048 |
hep-th/0510232
|
Nail Khusnutdinov
|
Artem R. Khabibullin, Nail R. Khusnutdinov and Sergey V. Sushkov
|
Casimir effect in a wormhole spacetime
|
2 figures, 10 pages, added 2 references
|
Class.Quant.Grav. 23 (2006) 627-634
|
10.1088/0264-9381/23/3/006
| null |
hep-th gr-qc
| null |
We consider the Casimir effect for quantized massive scalar field with
non-conformal coupling $\xi$ in a spacetime of wormhole whose throat is rounded
by a spherical shell. In the framework of zeta-regularization approach we
calculate a zero point energy of scalar field. We found that depending on
values of coupling $\xi$, a mass of field $m$, and/or the throat's radius $a$
the Casimir force may be both attractive and repulsive, and even equals to
zero.
|
[{'version': 'v1', 'created': 'Thu, 27 Oct 2005 12:17:44 GMT'}
{'version': 'v2', 'created': 'Fri, 4 Nov 2005 14:48:15 GMT'}]
|
2007-05-23
|
[array(['Khabibullin', 'Artem R.', ''], dtype=object)
array(['Khusnutdinov', 'Nail R.', ''], dtype=object)
array(['Sushkov', 'Sergey V.', ''], dtype=object)]
|
7,049 |
1206.1939
|
Mike Reeks
|
F. Zhang, M. Reeks, M. Kissane and R. J. Perkins
|
Resuspension of Small Particles from Multilayer Deposits in Turbulent
Boundary Layers
|
40 pages, 33 figures
| null | null | null |
physics.flu-dyn cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a hybrid stochastic model for the resuspension of micron-size
particles from multilayer deposits in a fully-developed turbulent boundary
layer. The rate of removal of particles from any given layer depends upon the
rate of removal of particles from the layer above which acts as a source of
uncovering and exposure of particles to the resuspending flow. The primary
resuspension rate constant for an individual particle within a layer is based
on the Rock'n'Roll (R'n'R) model using non-Gaussian statistics for the
aerodynamic forces acting on the particles (Zhang et al., 2012). The coupled
layer equations that describe multilayer resuspension of all the particles in
each layer are based on the generic lattice model of Friess & Yadigaroglu
(2001) which is extended here to include the influence of layer coverage and
particle size distribution. We consider the influence of layer thickness on the
resuspension along with the spread of adhesion within layers, and the
statistics of non-Gaussian versus Gaussian removal forces including their
timescale. Unlike its weak influence on long-term resuspension rates for
monolayers, this timescale plays a crucial and influential role in multilayer
resuspension. Finally we compare model predictions with those of a large-scale
and a mesoscale resuspension test, STORM (Castelo et al., 1999) and BISE
(Alloul-Marmor, 2002).
|
[{'version': 'v1', 'created': 'Sat, 9 Jun 2012 13:26:56 GMT'}]
|
2012-06-12
|
[array(['Zhang', 'F.', ''], dtype=object)
array(['Reeks', 'M.', ''], dtype=object)
array(['Kissane', 'M.', ''], dtype=object)
array(['Perkins', 'R. J.', ''], dtype=object)]
|
7,050 |
2103.11963
|
V. G. Kogan
|
V. G. Kogan and N. Nakagawa
|
Current distributions by moving vortices in superconductors
|
8 pages,10 figures. arXiv admin note: text overlap with
arXiv:2102.00073
|
Phys. Rev. B 103, 134511 (2021)
|
10.1103/PhysRevB.103.134511
| null |
cond-mat.supr-con
|
http://creativecommons.org/publicdomain/zero/1.0/
|
We take account of normal currents that emerge when vortices move. Moving
Abrikosov vortices in the bulk and Pearl vortices in thin films are considered.
Velocity dependent distributions of both normal and persistent currents are
studied in the frame of time-dependent London equations. In thin films near the
Pearl vortex core, these distributions are intriguing in particular.
|
[{'version': 'v1', 'created': 'Mon, 22 Mar 2021 16:08:00 GMT'}]
|
2021-04-28
|
[array(['Kogan', 'V. G.', ''], dtype=object)
array(['Nakagawa', 'N.', ''], dtype=object)]
|
7,051 |
1408.4473
|
Xi-Wen Guan
|
Xiwen Guan
|
Critical phenomena in one dimension from a Bethe ansatz perspective
|
a brief review, 21 pages, 15 figures, Eq. (9) was corrected, some new
references were added in this arXiv version
|
International Journal of Modern Physics B, 28, 1430015 (2014)
|
10.1142/S0217979214300151
| null |
cond-mat.quant-gas
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This article briefly reviews recent theoretical developments in quantum
critical phenomena in one-dimensional (1D) integrable quantum gases of cold
atoms. We present a discussion on quantum phase transitions, universal
thermodynamics, scaling functions and correlations for a few prototypical
exactly solved models, such as the Lieb-Liniger Bose gas, the spin-1 Bose gas
with antiferromagnetic spin-spin interaction, the two-component interacting
Fermi gas as well as spin-3/2 Fermi gases. We demonstrate that their
corresponding Bethe ansatz solutions provide a precise way to understand
quantum many-body physics, such as quantum criticality, Luttinger liquids, the
Wilson ratio, Tan's Contact, etc. These theoretical developments give rise to a
physical perspective using integrability for uncovering experimentally testable
phenomena in systems of interacting bosonic and fermonic ultracold atoms
confined to 1D.
|
[{'version': 'v1', 'created': 'Wed, 20 Aug 2014 03:21:23 GMT'}
{'version': 'v2', 'created': 'Sun, 31 Aug 2014 04:45:28 GMT'}]
|
2015-06-22
|
[array(['Guan', 'Xiwen', ''], dtype=object)]
|
7,052 |
2209.13722
|
Edgar Santamaria
|
E. Santamar\'ia (1 and 2), M. A. Guerrero (3), J. A. Toal\'a (4), G.
Ramos-Larios (1 and 2) and L. Sabin (5) ((1) Universidad de Guadalajara,
CUCEI, Blvd. Marcelino Garc\'i a Barrag\'an 1421, 44430, Guadalajara,
Jalisco, Mexico, (2) Instituto de Astronom\'i a y Meteorolog\'i a, Dpto.\ de
F\'i sica, CUCEI, Av.\ Vallarta 2602, 44130, Guadalajara, Jalisco, Mexico,
(3) Instituto de Astrof\'i sica de Andaluc\'i a, IAA-CSIC, Glorieta de la
Astronom\'i a s/n, 18008, Granada, Spain, (4) Instituto de Radioastronom\'ia
y Astrof\'isica (IRyA), UNAM Campus Morelia, Apartado postal 3-72, 58090
Morelia, Michoac\'an, Mexico, (5) Instituto de Astronom\'i a, Universidad
Nacional Aut\'onoma de M\'exico, Apdo.\ Postal 877, C.P. 22860, Ensenada,
B.C., Mexico)
|
QU Vul: An Integral Field Spectroscopy Case Study of a Nova Shell
|
10 pages, 6 figures
| null |
10.1093/mnras/stac2789
| null |
astro-ph.SR astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present GTC MEGARA high-dispersion integral field spectroscopic
observations of the nova remnant QU\,Vul, which provide a comprehensive 3D view
of this nova shell. The tomographic analysis of the H$\alpha$ emission reveals
a complex physical structure characterized by an inhomogeneous and clumpy
distribution of the material within this shell. The overall structure can be
described as a prolate ellipsoid with an axial ratio of 1.4$\pm$0.2, a major
axis inclination with the line of sight of $12^{\circ}\pm6^{\circ}$, and polar
and equatorial expansion velocities $\approx$560 km~s$^{-1}$ and 400$\pm$60 km
s$^{-1}$, respectively. The comparison of the expansion velocity on the plane
of the sky with the angular expansion implies a distance of 1.43$\pm$0.23 kpc.
The ionized mass is found to be $\approx 2\times 10^{-4}$ M$_\odot$, noting
that the information on the 3D distribution of material within the nova shell
has allowed us to reduce the uncertainty on its filling factor. The nova shell
is still in its free expansion phase, which can be expected as the ejecta mass
is much larger than the swept-up circumstellar medium mass. The 3D distribution
and radial velocity of material within the nova shell provide an interpretation
of the so-called "castellated" line profiles observed in early optical spectra
of nova shells, which can be attributed to knots and clumps moving radially
along different directions.
|
[{'version': 'v1', 'created': 'Tue, 27 Sep 2022 22:18:12 GMT'}]
|
2022-10-12
|
[array(['Santamaría', 'E.', '', '1 and 2'], dtype=object)
array(['Guerrero', 'M. A.', '', '1 and 2'], dtype=object)
array(['Toalá', 'J. A.', '', '1 and 2'], dtype=object)
array(['Ramos-Larios', 'G.', '', '1 and 2'], dtype=object)
array(['Sabin', 'L.', ''], dtype=object)]
|
7,053 |
1604.06642
|
Stefano Burrello
|
S. Burrello, M. Colonna, F. Matera
|
Pairing effects on neutrino transport in low-density stellar matter
|
5 pages, 3 figures
| null |
10.1103/PhysRevC.94.012801
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the impact of pairing correlations on neutrino transport in
stellar matter. Our analysis is extended to nuclear matter conditions where
large density fluctuations develop, associated with the onset of the
liquid-vapor phase transition, and clustering phenomena occur. Within a
thermodynamical treatment, we show that at moderate temperatures, where pairing
effects are still active, the scattering of neutrinos in the nuclear medium is
significantly affected by pairing correlations, which increase the neutrino
trapping, thus modifying the cooling mechanism, by neutrino emission, of
neutron stars.
|
[{'version': 'v1', 'created': 'Fri, 22 Apr 2016 13:16:20 GMT'}]
|
2016-08-24
|
[array(['Burrello', 'S.', ''], dtype=object)
array(['Colonna', 'M.', ''], dtype=object)
array(['Matera', 'F.', ''], dtype=object)]
|
7,054 |
2207.08750
|
Fabrizio Camerin
|
Yogesh Shelke, Susana Mar\'in-Aguilar, Fabrizio Camerin, Marjolein
Dijkstra, Daniela J. Kraft
|
Exploiting anisotropic particle shape to electrostatically assemble
colloidal molecules with high yield and purity
| null | null | null | null |
cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Hypothesis: Colloidal molecules with anisotropic shapes and interactions are
powerful model systems for deciphering the behavior of real molecules and
building units for creating materials with designed properties. While many
strategies for their assembly have been developed, they typically yield a broad
distribution or are limited to a specific type. We hypothesize that the shape
and relative sizes of colloidal particles can be exploited to efficiently
direct their assembly into colloidal molecules of desired valence.
Experiments: We exploit electrostatic self-assembly of negatively charged
spheres made from either polystyrene or silica onto positively charged hematite
cubes. We thoroughly analyze the role of the shape and size ratio of particles
on the cluster size and yield of colloidal molecules.
Findings: Using a combination of experiments and simulations, we demonstrate
that cubic particle shape is crucial to generate high yields of distinct
colloidal molecules over a wide variety of size ratios. We find that
electrostatic repulsion between the satellite spheres is important to leverage
the templating effect of the cubes, leading the spheres to preferentially
assemble on the facets rather than the edges and corners of the cube.
Furthermore, we reveal that our protocol is not affected by the specific choice
of the material of the colloidal particles. Finally, we show that the permanent
magnetic dipole moment of the hematite cubes can be utilized to separate
colloidal molecules from non-assembled satellite particles. Our simple and
effective strategy might be extended to other templating particle shapes,
thereby greatly expanding the library of colloidal molecules that can be
achieved with high yield and purity.
|
[{'version': 'v1', 'created': 'Mon, 18 Jul 2022 16:53:59 GMT'}]
|
2022-07-19
|
[array(['Shelke', 'Yogesh', ''], dtype=object)
array(['Marín-Aguilar', 'Susana', ''], dtype=object)
array(['Camerin', 'Fabrizio', ''], dtype=object)
array(['Dijkstra', 'Marjolein', ''], dtype=object)
array(['Kraft', 'Daniela J.', ''], dtype=object)]
|
7,055 |
1702.05559
|
Jounghun Lee
|
Jounghun Lee (Seoul National University)
|
Independent Measurements of the Dynamical Masses of Six Galaxy Clusters
in the Local Universe
|
accepted for publication in ApJ, revised version, minor changes, 10
figures, 1 table
|
Astrophys.J. 839 (2017) 29
|
10.3847/1538-4357/aa6895
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present independent measurements of the masses of the galaxy clusters in
the local universe by employing the Dynamical Mass Estimator (DME) originally
developed by Falco et al in 2014. In the catalog of the galaxy groups/clusters
constructed by Tempel et al. from the Sloan Digital Sky Survey Data Release 10,
we search for those as the targets around which the neighbor galaxies
constitute thin straight filamentary structures in the configuration space
spanned by the redshifts and the projected distances. Out of the $29$ Sloan
clusters that have $100$ or more member galaxies, a total of six targets are
found to have filamentary structures in their bound zones. For each of the six
targets, we construct the profile of the recession velocities of the filament
galaxies, which depends on the cluster mass and the angle of the filament
relative the line of the sight direction. Fitting the constructed profile to
the universal formula with constant amplitude and slope, we statistically
determine the dynamical mass of each cluster and compare it with the previous
estimates made by a conventional method. The weak and strong points of the DME
as well as its prospect for the measurements of the dynamical masses of the
high-$z$ clusters are discussed.
|
[{'version': 'v1', 'created': 'Sat, 18 Feb 2017 02:20:11 GMT'}
{'version': 'v2', 'created': 'Tue, 21 Mar 2017 00:30:18 GMT'}]
|
2017-05-01
|
[array(['Lee', 'Jounghun', '', 'Seoul National University'], dtype=object)]
|
7,056 |
hep-th/0609002
|
Hael Collins
|
Hael Collins, R. Holman
|
The energy-momentum tensor for an effective initial state and the
renormalization of gravity
|
18 pages, 2 postscript figures, uses ReVTeX
| null | null |
UMHEP-463,CMU-HEP-06-09
|
hep-th
| null |
We renormalize the divergences in the energy-momentum tensor of a scalar
field that begins its evolution in an effective initial state. The effective
initial state is a formalism that encodes the signatures of new physics in the
structure of the quantum state of a field; in an inflationary setting, these
signatures could include trans-Planckian effects. We treat both the scalar
field and gravity equivalently, considering each as a small quantum fluctuation
about a spatially independent background. The classical gravitational equations
of motion then arise as a tadpole condition on the graviton. The contribution
of the scalar field to these equations contains divergences associated with the
structure of the effective state. However, these divergences occur only at the
initial time, where the state was defined, and they accompany terms depending
solely upon the classical gravitational background. We define the
renormalization prescription that adds the appropriate counterterms at the
initial-time boundary to cancel these divergences, and illustrate it with
several examples evaluated at one-loop order.
|
[{'version': 'v1', 'created': 'Thu, 31 Aug 2006 20:36:47 GMT'}]
|
2007-05-23
|
[array(['Collins', 'Hael', ''], dtype=object)
array(['Holman', 'R.', ''], dtype=object)]
|
7,057 |
0901.2269
|
Debasish Chatterjee
|
Debasish Chatterjee and Soumik Pal
|
An Excursion-Theoretic Approach to Stability of Discrete-Time Stochastic
Hybrid Systems
|
Revised. 17 pages. To appear in Applied Mathematics & Optimization
|
Applied Mathematics & Optimization, Volume 63, Number 2, pp.
217-237, 2011
|
10.1007/s00245-010-9117-6
| null |
math.OC math.PR
|
http://creativecommons.org/licenses/by/3.0/
|
We address stability of a class of Markovian discrete-time stochastic hybrid
systems. This class of systems is characterized by the state-space of the
system being partitioned into a safe or target set and its exterior, and the
dynamics of the system being different in each domain. We give conditions for
$L_1$-boundedness of Lyapunov functions based on certain negative drift
conditions outside the target set, together with some more minor assumptions.
We then apply our results to a wide class of randomly switched systems (or
iterated function systems), for which we give conditions for global asymptotic
stability almost surely and in $L_1$. The systems need not be time-homogeneous,
and our results apply to certain systems for which functional-analytic or
martingale-based estimates are difficult or impossible to get.
|
[{'version': 'v1', 'created': 'Thu, 15 Jan 2009 14:16:30 GMT'}
{'version': 'v2', 'created': 'Fri, 22 Jan 2010 10:21:46 GMT'}
{'version': 'v3', 'created': 'Sun, 29 Aug 2010 20:18:24 GMT'}]
|
2011-03-09
|
[array(['Chatterjee', 'Debasish', ''], dtype=object)
array(['Pal', 'Soumik', ''], dtype=object)]
|
7,058 |
2306.00113
|
Angelo Felice Lopez
|
Vincenzo Antonelli, Gianfranco Casnati, Angelo Felice Lopez and
Debaditya Raychaudhury
|
On varieties with Ulrich twisted conormal bundles
| null | null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study varieties $X \subset P^r$ such that is $N_X^*(k)$ is an Ulrich
vector bundle for some integer $k$. We first prove that such an $X$ must be a
curve. Then we give several examples of curves with $N_X^*(k)$ an Ulrich vector
bundle.
|
[{'version': 'v1', 'created': 'Wed, 31 May 2023 18:39:16 GMT'}]
|
2023-06-02
|
[array(['Antonelli', 'Vincenzo', ''], dtype=object)
array(['Casnati', 'Gianfranco', ''], dtype=object)
array(['Lopez', 'Angelo Felice', ''], dtype=object)
array(['Raychaudhury', 'Debaditya', ''], dtype=object)]
|
7,059 |
1707.03319
|
Rahmat Widia Sembiring
|
Dewi Sartika Ginting, Kristin Sitompul, Jasael Simanulang, Rahmat
Widia Sembiring, Muhammad Zarlis
|
Modification of Symmetric Cryptography with Combining Affine Chiper and
Caesar Chiper which Dynamic Nature in Matrix of Chiper Transposition by
Applying Flow Pattern in the Planting Rice
|
2nd International Conference of Computer, Environment, Social
Science, Health Science, Agriculture & Technology (ICEST) 2017
|
Advances in Science, Technology and Engineering Systems Journal
(ASTESJ), Adv. Sci. Technol. Eng. Syst. J. 2(5), 1-5 (2017)
|
10.25046/aj020502
| null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Classical cryptography is a way of disguising the news done by the people
when there was no computer. The goal is to protect information by way of
encoding. This paper describesa modification of classical algorithms to make
cryptanalis difficult to steal undisclosed messages. There are three types of
classical algorithms that are combined affine chiper, Caesar chiper and chiper
transposition. Where for chiperteks affine chiper and Caesar chiper can be
looped as much as the initial key, because the result can be varied as much as
key value, then affine chiper and Caesar chiper in this case is dynamic. Then
the results of the affine and Caesar will be combined in the transposition
chiper matrix by applying the pattern of rice cultivation path and for
chipertext retrieval by finally applying the pattern of rice planting path. And
the final digit of the digit shown in the form of binary digits so that 5
characters can be changed to 80 digit bits are scrambled. Thus the cryptanalyst
will be more difficult and takes a very long time to hack information that has
been kept secret.
|
[{'version': 'v1', 'created': 'Tue, 11 Jul 2017 15:19:33 GMT'}]
|
2017-07-12
|
[array(['Ginting', 'Dewi Sartika', ''], dtype=object)
array(['Sitompul', 'Kristin', ''], dtype=object)
array(['Simanulang', 'Jasael', ''], dtype=object)
array(['Sembiring', 'Rahmat Widia', ''], dtype=object)
array(['Zarlis', 'Muhammad', ''], dtype=object)]
|
7,060 |
2112.10935
|
Yunchang Yang
|
Tianhao Wu, Yunchang Yang, Han Zhong, Liwei Wang, Simon S. Du, Jiantao
Jiao
|
Nearly Optimal Policy Optimization with Stable at Any Time Guarantee
|
arXiv admin note: text overlap with arXiv:2002.08243 by other authors
| null | null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Policy optimization methods are one of the most widely used classes of
Reinforcement Learning (RL) algorithms. However, theoretical understanding of
these methods remains insufficient. Even in the episodic (time-inhomogeneous)
tabular setting, the state-of-the-art theoretical result of policy-based method
in \citet{shani2020optimistic} is only $\tilde{O}(\sqrt{S^2AH^4K})$ where $S$
is the number of states, $A$ is the number of actions, $H$ is the horizon, and
$K$ is the number of episodes, and there is a $\sqrt{SH}$ gap compared with the
information theoretic lower bound $\tilde{\Omega}(\sqrt{SAH^3K})$. To bridge
such a gap, we propose a novel algorithm Reference-based Policy Optimization
with Stable at Any Time guarantee (\algnameacro), which features the property
"Stable at Any Time". We prove that our algorithm achieves
$\tilde{O}(\sqrt{SAH^3K} + \sqrt{AH^4K})$ regret. When $S > H$, our algorithm
is minimax optimal when ignoring logarithmic factors. To our best knowledge,
RPO-SAT is the first computationally efficient, nearly minimax optimal
policy-based algorithm for tabular RL.
|
[{'version': 'v1', 'created': 'Tue, 21 Dec 2021 01:54:17 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Dec 2021 02:11:53 GMT'}
{'version': 'v3', 'created': 'Sat, 3 Dec 2022 06:42:33 GMT'}]
|
2022-12-06
|
[array(['Wu', 'Tianhao', ''], dtype=object)
array(['Yang', 'Yunchang', ''], dtype=object)
array(['Zhong', 'Han', ''], dtype=object)
array(['Wang', 'Liwei', ''], dtype=object)
array(['Du', 'Simon S.', ''], dtype=object)
array(['Jiao', 'Jiantao', ''], dtype=object)]
|
7,061 |
2005.12151
|
Kari Sepp\"anen
|
Kari Sepp\"anen, Pekka J. Wainio
|
Topology Management, Multi-Path Routing, and Link Scheduling for mmW WMN
Backhaul
|
7 pages, 10 figures
| null | null | null |
cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Mobile backhaul system based on a wireless mesh network using point-to-point
millimetre wave links is a promising solution for dense 5G small cell
deployments. While mmW radio technology can provide the sufficient capacity,
the management of transport delays over multiple wireless hops is challenging
especially if TDD backhaul radios are used. Earlier, we have proposed the
Self-Optimizing WMN concept and presented routing and link scheduling
principles that can be used for backhaul nodes with single radio unit. In this
paper, we are extending the concept to support backhaul nodes that can have
multiple radio units with own beam steering antennas covering non-overlapping
sectors. The proposed system is based on dividing the task in separate phases.
In the first phase, an active network topology is created by selecting a
suitable subset of all available links. In the next step, the routing
information and transmission sets are generated. Finally, the link schedule is
optimized by finding an optimal ordering of transmission sets. In this paper,
we are proposing a feedback loop from transmission set generation to topology
management. We show that this feedback loop removes efficiently "troublesome"
links from the active topology making it easier to find optimal link schedules.
|
[{'version': 'v1', 'created': 'Mon, 25 May 2020 14:53:11 GMT'}]
|
2020-05-26
|
[array(['Seppänen', 'Kari', ''], dtype=object)
array(['Wainio', 'Pekka J.', ''], dtype=object)]
|
7,062 |
2304.05678
|
Simindokht Jahangard
|
Simindokht Jahangard, Munawar Hayat and Hamid Rezatofighi
|
Real-time Trajectory-based Social Group Detection
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Social group detection is a crucial aspect of various robotic applications,
including robot navigation and human-robot interactions. To date, a range of
model-based techniques have been employed to address this challenge, such as
the F-formation and trajectory similarity frameworks. However, these approaches
often fail to provide reliable results in crowded and dynamic scenarios. Recent
advancements in this area have mainly focused on learning-based methods, such
as deep neural networks that use visual content or human pose. Although visual
content-based methods have demonstrated promising performance on large-scale
datasets, their computational complexity poses a significant barrier to their
practical use in real-time applications. To address these issues, we propose a
simple and efficient framework for social group detection. Our approach
explores the impact of motion trajectory on social grouping and utilizes a
novel, reliable, and fast data-driven method. We formulate the individuals in a
scene as a graph, where the nodes are represented by LSTM-encoded trajectories
and the edges are defined by the distances between each pair of tracks. Our
framework employs a modified graph transformer module and graph clustering
losses to detect social groups. Our experiments on the popular JRDBAct dataset
reveal noticeable improvements in performance, with relative improvements
ranging from 2% to 11%. Furthermore, our framework is significantly faster,
with up to 12x faster inference times compared to state-of-the-art methods
under the same computation resources. These results demonstrate that our
proposed method is suitable for real-time robotic applications.
|
[{'version': 'v1', 'created': 'Wed, 12 Apr 2023 08:01:43 GMT'}]
|
2023-04-13
|
[array(['Jahangard', 'Simindokht', ''], dtype=object)
array(['Hayat', 'Munawar', ''], dtype=object)
array(['Rezatofighi', 'Hamid', ''], dtype=object)]
|
7,063 |
2004.08840
|
Sebastian Kreinecker
|
Sebastian Kreinecker
|
The lattice of monomial clones on finite fields
|
32 pages
|
Algebra Univers. 82, 53 (2021)
|
10.1007/s00012-021-00733-6
| null |
math.RA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the lattice of clones that are generated by a set of functions
that are induced on a finite field $\mathbb{F}$ by monomials. We study the
atoms and coatoms of this lattice and investigate whether this lattice contains
infinite ascending chains, or infinite descending chains, or infinite
antichains. We give a connection between the lattice of these clones and
semi-affine algebras. Furthermore, we show that the sublattice of idempotent
clones of this lattice is finite and every idempotent monomial clone is
principal.
|
[{'version': 'v1', 'created': 'Sun, 19 Apr 2020 12:42:16 GMT'}
{'version': 'v2', 'created': 'Mon, 19 Apr 2021 16:17:08 GMT'}]
|
2021-09-03
|
[array(['Kreinecker', 'Sebastian', ''], dtype=object)]
|
7,064 |
2101.07866
|
Weihan Zhang
|
Weihan Zhang, Bryan Pogorelsky, Mark Loveland, Trevor Wolf
|
Classification of COVID-19 X-ray Images Using a Combination of Deep and
Handcrafted Features
|
5 pages, 5 figures
| null | null | null |
eess.IV cs.CV cs.LG
|
http://creativecommons.org/publicdomain/zero/1.0/
|
Coronavirus Disease 2019 (COVID-19) demonstrated the need for accurate and
fast diagnosis methods for emergent viral diseases. Soon after the emergence of
COVID-19, medical practitioners used X-ray and computed tomography (CT) images
of patients' lungs to detect COVID-19. Machine learning methods are capable of
improving the identification accuracy of COVID-19 in X-ray and CT images,
delivering near real-time results, while alleviating the burden on medical
practitioners. In this work, we demonstrate the efficacy of a support vector
machine (SVM) classifier, trained with a combination of deep convolutional and
handcrafted features extracted from X-ray chest scans. We use this combination
of features to discriminate between healthy, common pneumonia, and COVID-19
patients. The performance of the combined feature approach is compared with a
standard convolutional neural network (CNN) and the SVM trained with
handcrafted features. We find that combining the features in our novel
framework improves the performance of the classification task compared to the
independent application of convolutional and handcrafted features.
Specifically, we achieve an accuracy of 0.988 in the classification task with
our combined approach compared to 0.963 and 0.983 accuracy for the handcrafted
features with SVM and CNN respectively.
|
[{'version': 'v1', 'created': 'Tue, 19 Jan 2021 21:09:46 GMT'}
{'version': 'v2', 'created': 'Thu, 21 Jan 2021 17:21:01 GMT'}]
|
2021-01-22
|
[array(['Zhang', 'Weihan', ''], dtype=object)
array(['Pogorelsky', 'Bryan', ''], dtype=object)
array(['Loveland', 'Mark', ''], dtype=object)
array(['Wolf', 'Trevor', ''], dtype=object)]
|
7,065 |
cond-mat/0607574
|
Matthew Foster
|
Matthew S. Foster and Andreas W. W. Ludwig
|
Metal-insulator transition in Hubbard-like models with random hopping
|
5 pages, 1 figure. v2: Corrected simple algebraic error in Eq. (10b).
The metal-insulator transition is now predicted to be first order. v3:
References updated, published version
|
Phys. Rev. B 74, 241102(R) (2006)
|
10.1103/PhysRevB.74.241102
| null |
cond-mat.dis-nn
| null |
An instability of a diffusive Fermi liquid, indicative of a metal-insulator
transition (expected to be of first order), arising solely from the competition
between quenched disorder and short-ranged interparticle interactions is
identified in Hubbard-like models for spinless fermions, subject to (complex)
random hopping at half-filling on bipartite lattices. The instability, found
within a Finkel'stein Non-Linear Sigma Model treatment in d = (2 + epsilon) > 2
dimensions, originates from an underlying particle-hole like (so-called
"chiral") symmetry, shared by both disorder and interactions. In the clean,
interacting Fermi liquid this symmetry is responsible for the (completely
different) "nesting" instability.
|
[{'version': 'v1', 'created': 'Mon, 24 Jul 2006 07:43:32 GMT'}
{'version': 'v2', 'created': 'Mon, 28 Aug 2006 02:40:49 GMT'}
{'version': 'v3', 'created': 'Fri, 9 Feb 2007 16:52:40 GMT'}]
|
2009-11-11
|
[array(['Foster', 'Matthew S.', ''], dtype=object)
array(['Ludwig', 'Andreas W. W.', ''], dtype=object)]
|
7,066 |
2102.09718
|
Shashank Rajput
|
Shashank Rajput, Kangwook Lee, Dimitris Papailiopoulos
|
Permutation-Based SGD: Is Random Optimal?
| null | null | null | null |
cs.LG math.OC stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A recent line of ground-breaking results for permutation-based SGD has
corroborated a widely observed phenomenon: random permutations offer faster
convergence than with-replacement sampling. However, is random optimal? We show
that this depends heavily on what functions we are optimizing, and the
convergence gap between optimal and random permutations can vary from
exponential to nonexistent. We first show that for 1-dimensional strongly
convex functions, with smooth second derivatives, there exist permutations that
offer exponentially faster convergence compared to random. However, for general
strongly convex functions, random permutations are optimal. Finally, we show
that for quadratic, strongly-convex functions, there are easy-to-construct
permutations that lead to accelerated convergence compared to random. Our
results suggest that a general convergence characterization of optimal
permutations cannot capture the nuances of individual function classes, and can
mistakenly indicate that one cannot do much better than random.
|
[{'version': 'v1', 'created': 'Fri, 19 Feb 2021 03:14:28 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Nov 2021 01:25:18 GMT'}]
|
2021-11-29
|
[array(['Rajput', 'Shashank', ''], dtype=object)
array(['Lee', 'Kangwook', ''], dtype=object)
array(['Papailiopoulos', 'Dimitris', ''], dtype=object)]
|
7,067 |
astro-ph/0402546
|
Takaya Ohashi
|
T. Ohashi, M. Ishida, S. Sasaki, Y. Ishisaki, K. Mitsuda, N. Y.
Yamasaki, R. Fujimoto, T. Furusho, H. Kunieda, Y. Tawara, A. Furuzawa, Y.
Suto, K. Yoshikawa
|
Future Japanese missions for the study of warm-hot intergalactic medium
|
6 pages, 9 figures. To appear in the proceedings of "Modelling the
Intergalactic and Intracluster Media", Vulcano Island, October 1-4, 2003
| null | null | null |
astro-ph
| null |
We present our proposal for a small X-ray mission DIOS (Diffuse Intergalactic
Oxygen Surveyor) to perform survey observations of warm-hot intergalactic
medium using OVII and OVIII emission lines. This will be proposed to a small
satellite program planned by ISAS/JAXA in Japan for a launch in 2008. The
instrument consists of an array of TES microcalorimeters with an energy
resolution 2 eV, cooled by mechanical coolers. The X-ray telescope will employ
4-stage reflection mirrors with a focal length as short as 70 cm and an angular
resolution 2'. In addition to DIOS, we briefly describe the NeXT (New X-ray
Telescope) mission, which is a larger Japanese X-ray observatory to be launched
in 2010 and plans to explore non-thermal processes in the universe.
|
[{'version': 'v1', 'created': 'Tue, 24 Feb 2004 04:45:56 GMT'}]
|
2007-05-23
|
[array(['Ohashi', 'T.', ''], dtype=object)
array(['Ishida', 'M.', ''], dtype=object)
array(['Sasaki', 'S.', ''], dtype=object)
array(['Ishisaki', 'Y.', ''], dtype=object)
array(['Mitsuda', 'K.', ''], dtype=object)
array(['Yamasaki', 'N. Y.', ''], dtype=object)
array(['Fujimoto', 'R.', ''], dtype=object)
array(['Furusho', 'T.', ''], dtype=object)
array(['Kunieda', 'H.', ''], dtype=object)
array(['Tawara', 'Y.', ''], dtype=object)
array(['Furuzawa', 'A.', ''], dtype=object)
array(['Suto', 'Y.', ''], dtype=object)
array(['Yoshikawa', 'K.', ''], dtype=object)]
|
7,068 |
1505.00329
|
Gz Sun
|
Guozhu Sun, Jiquan Zhai, Xueda Wen, Yang Yu, Lin Kang, Weiwei Xu, Jian
Chen, Peiheng Wu, and Siyuan Han
|
Detection of small single-cycle signals by stochastic resonance using a
bistable superconducting quantum interference device
|
5 pages 3 figures
|
Applied Physics Letters 106, 172602 (2015)
|
10.1063/1.4919539
| null |
cond-mat.mes-hall cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose and experimentally demonstrate detecting small single-cycle and
few-cycle signals by using the symmetric double-well potential of a radio
frequency superconducting quantum interference device (rf-SQUID). We show that
the response of this bistable system to single- and few-cycle signals has a
non-monotonic dependence on the noise strength. The response, measured by the
probability of transition from initial potential well to the opposite one,
becomes maximum when the noise-induced transition rate between the two stable
states of the rf-SQUID is comparable to the signal frequency. Comparison to
numerical simulations shows that the phenomenon is a manifestation of
stochastic resonance.
|
[{'version': 'v1', 'created': 'Sat, 2 May 2015 09:33:27 GMT'}]
|
2015-05-15
|
[array(['Sun', 'Guozhu', ''], dtype=object)
array(['Zhai', 'Jiquan', ''], dtype=object)
array(['Wen', 'Xueda', ''], dtype=object)
array(['Yu', 'Yang', ''], dtype=object)
array(['Kang', 'Lin', ''], dtype=object)
array(['Xu', 'Weiwei', ''], dtype=object)
array(['Chen', 'Jian', ''], dtype=object)
array(['Wu', 'Peiheng', ''], dtype=object)
array(['Han', 'Siyuan', ''], dtype=object)]
|
7,069 |
1910.08565
|
Lisa W\"olfer
|
Lisa W\"olfer, Giovanni Picogna, Barbara Ercolano, Ewine F. van
Dishoeck
|
Radiation-Hydrodynamical Models of X-ray Photoevaporation in Carbon
Depleted Circumstellar Discs
|
20 pages, 17 figures; accepted for publication in MNRAS
| null |
10.1093/mnras/stz2939
| null |
astro-ph.EP astro-ph.IM astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The so-called transition discs provide an important tool to probe various
mechanisms that might influence the evolution of protoplanetary discs and
therefore the formation of planetary systems. One of these mechanisms is
photoevaporation due to energetic radiation from the central star, which can in
principal explain the occurrence of discs with inner cavities like transition
discs. Current models, however, fail to reproduce a subset of the observed
transition discs, namely objects with large measured cavities and vigorous
accretion. For these objects the presence of (multiple) giant planets is often
invoked to explain the observations. In our work we explore the possibility of
X-ray photoevaporation operating in discs with different gas-phase depletion of
carbon and show that the influence of photoevaporation can be extended in such
low-metallicity discs. As carbon is one of the main contributors to the X-ray
opacity, its depletion leads to larger penetration depths of X-rays in the disc
and results in higher gas temperatures and stronger photoevaporative winds. We
present radiation-hydrodynamical models of discs irradiated by internal
X-ray+EUV radiation assuming Carbon gas-phase depletions by factors of 3,10 and
100 and derive realistic mass-loss rates and profiles. Our analysis yields
robust temperature prescriptions as well as photoevaporative mass-loss rates
and profiles which may be able to explain a larger fraction of the observed
diversity of transition discs.
|
[{'version': 'v1', 'created': 'Fri, 18 Oct 2019 18:00:19 GMT'}]
|
2019-11-06
|
[array(['Wölfer', 'Lisa', ''], dtype=object)
array(['Picogna', 'Giovanni', ''], dtype=object)
array(['Ercolano', 'Barbara', ''], dtype=object)
array(['van Dishoeck', 'Ewine F.', ''], dtype=object)]
|
7,070 |
hep-ph/0611344
|
Alex Bernardini Dr.
|
Alex E. Bernardini and C. Dobrigkeit
|
The charmonium and bottomonium mass spectroscopy with a simple
approximation of the kinetic term
|
This submission has been withdrawn by the authors because it is a
duplicate of arXiv:hep-ph/0611336. It was due to a technical submission error
by the authors
| null | null | null |
hep-ph
| null |
This submission has been withdrawn by the authors because it is a duplicate
of arXiv:hep-ph/0611336. It was due to a technical submission error by the
authors.
|
[{'version': 'v1', 'created': 'Tue, 28 Nov 2006 01:01:39 GMT'}
{'version': 'v2', 'created': 'Fri, 10 Sep 2010 18:23:11 GMT'}
{'version': 'v3', 'created': 'Mon, 27 Aug 2012 16:37:48 GMT'}]
|
2012-08-28
|
[array(['Bernardini', 'Alex E.', ''], dtype=object)
array(['Dobrigkeit', 'C.', ''], dtype=object)]
|
7,071 |
math/0703506
|
Danny Fan
|
Nassif Ghoussoub and Amir Moradifam
|
On the best possible remaining term in the Hardy Inequality
|
13 pages. Updated versions --if any-- of this author's papers can be
downloaded at http://pims.math.ca/~nassif/
| null |
10.1073/pnas.0803703105
| null |
math.AP
| null |
We give a necessary and sufficient condition on a radially symmetric
potential $V$ on $\Omega$ that makes it an admissible candidate for an improved
Hardy inequality of the following form:
\begin{equation}\label{gen-hardy.0} \hbox{$\int_{\Omega}|\nabla u |^{2}dx -
(\frac{n-2}{2})^{2} \int_{\Omega}\frac{|u|^{2}}{|x|^{2}}dx\geq c\int_{\Omega}
V(|x|)|u|^{2}dx$ \quad for all $u \in H^{1}_{0}(\Omega)$.} \end{equation}
|
[{'version': 'v1', 'created': 'Fri, 16 Mar 2007 22:31:24 GMT'}]
|
2009-11-13
|
[array(['Ghoussoub', 'Nassif', ''], dtype=object)
array(['Moradifam', 'Amir', ''], dtype=object)]
|
7,072 |
1907.03175
|
Maria Petropoulou
|
Maria Petropoulou, Yajie Yuan, Alexander Y. Chen, Apostolos
Mastichiadis
|
Inverse Compton Cascades in Pair-Producing Gaps: Effects of Triplet Pair
Production
|
12 pages, 6 figures, accepted for publication in ApJ
| null |
10.3847/1538-4357/ab3856
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Inverse Compton-pair cascades are initiated when gamma-rays are absorbed on
an ambient soft photon field to produce relativistic pairs, which in turn
up-scatter the same soft photons to produce more gamma-rays. If the Compton
scatterings take place in the deep Klein-Nishina regime, then triplet pair
production ($e\gamma_b \rightarrow ee^{+}e^{-}$) becomes relevant and may even
regulate the development of the cascade. We investigate the properties of
pair-Compton cascades with triplet pair production in accelerating gaps, i.e.,
regions with an unscreened electric field. Using the method of transport
equations for the particle evolution, we compute the growth rate of the pair
cascade as a function of the accelerating electric field in the presence of
black-body and power-law ambient photon fields. Informed by the numerical
results, we derive simple analytical expressions for the peak growth rate and
the corresponding electric field. We show that for certain parameters, which
can be realized in the vicinity of accreting supermassive black holes at the
centers of active galactic nuclei, the pair cascade may well be regulated by
inverse Compton scattering in the deep Klein-Nishina regime and triplet pair
production. We present indicative examples of the escaping gamma-ray radiation
from the gap, and discuss our results in application to the TeV observations of
radio galaxy M87.
|
[{'version': 'v1', 'created': 'Sat, 6 Jul 2019 20:07:09 GMT'}
{'version': 'v2', 'created': 'Mon, 5 Aug 2019 12:53:13 GMT'}]
|
2019-10-02
|
[array(['Petropoulou', 'Maria', ''], dtype=object)
array(['Yuan', 'Yajie', ''], dtype=object)
array(['Chen', 'Alexander Y.', ''], dtype=object)
array(['Mastichiadis', 'Apostolos', ''], dtype=object)]
|
7,073 |
2301.11568
|
Jinhan Kim
|
Jinhan Kim, Nargiz Humbatova, Gunel Jahangirova, Paolo Tonella, Shin
Yoo
|
Repairing DNN Architecture: Are We There Yet?
|
Paper accepted to ICST 2023
| null | null | null |
cs.SE
|
http://creativecommons.org/licenses/by/4.0/
|
As Deep Neural Networks (DNNs) are rapidly being adopted within large
software systems, software developers are increasingly required to design,
train, and deploy such models into the systems they develop. Consequently,
testing and improving the robustness of these models have received a lot of
attention lately. However, relatively little effort has been made to address
the difficulties developers experience when designing and training such models:
if the evaluation of a model shows poor performance after the initial training,
what should the developer change? We survey and evaluate existing
state-of-the-art techniques that can be used to repair model performance, using
a benchmark of both real-world mistakes developers made while designing DNN
models and artificial faulty models generated by mutating the model code. The
empirical evaluation shows that random baseline is comparable with or sometimes
outperforms existing state-of-the-art techniques. However, for larger and more
complicated models, all repair techniques fail to find fixes. Our findings call
for further research to develop more sophisticated techniques for Deep Learning
repair.
|
[{'version': 'v1', 'created': 'Fri, 27 Jan 2023 07:24:51 GMT'}]
|
2023-01-30
|
[array(['Kim', 'Jinhan', ''], dtype=object)
array(['Humbatova', 'Nargiz', ''], dtype=object)
array(['Jahangirova', 'Gunel', ''], dtype=object)
array(['Tonella', 'Paolo', ''], dtype=object)
array(['Yoo', 'Shin', ''], dtype=object)]
|
7,074 |
hep-th/9711093
|
Mariano Cadoni
|
M. Cadoni
|
Dualities Compositeness and Spacetime Structure of 4d Extreme Stringy
Black Holes
|
17 pages, LaTex, no figures
|
Int.J.Mod.Phys.A14:1015-1034,1999
|
10.1142/S0217751X99000506
|
INFNCA-TH9719
|
hep-th gr-qc
| null |
We study the BPS black hole solutions of the (truncated) action for heterotic
string theory compactified on a six-torus. The O(3,Z) duality symmetry of the
theory, together with the bound state interpretation of extreme black holes, is
used to generate the whole spectrum of the solutions. The corresponding
spacetime structures, written in terms of the string metric, are analyzed in
detail. In particular, we show that only the elementary solutions present naked
singularities. The bound states have either null singularities (electric
solutions) or are regular (magnetic or dyonic solutions) with near-horizon
geometries given by the product of two 2d spaces of constant curvature. The
behavior of some of these solutions as supersymmetric attractors is discussed.
We also show that our approach is very useful to understand some of the
puzzling features of charged black hole solutions in string theory.
|
[{'version': 'v1', 'created': 'Thu, 13 Nov 1997 08:37:07 GMT'}]
|
2010-11-19
|
[array(['Cadoni', 'M.', ''], dtype=object)]
|
7,075 |
2201.01030
|
Liwen Hu
|
Liwen Hu, Lei Ma, Dawei Weng, Tiejun Huang
|
A Robust Visual Sampling Model Inspired by Receptive Field
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Spike camera mimicking the retina fovea can report per-pixel luminance
intensity accumulation by firing spikes. As a bio-inspired vision sensor with
high temporal resolution, it has a huge potential for computer vision. However,
the sampling model in current Spike camera is so susceptible to quantization
and noise that it cannot capture the texture details of objects effectively. In
this work, a robust visual sampling model inspired by receptive field (RVSM) is
proposed where wavelet filter generated by difference of Gaussian (DoG) and
Gaussian filter are used to simulate receptive field. Using corresponding
method similar to inverse wavelet transform, spike data from RVSM can be
converted into images. To test the performance, we also propose a high-speed
motion spike dataset (HMD) including a variety of motion scenes. By comparing
reconstructed images in HMD, we find RVSM can improve the ability of capturing
information of Spike camera greatly. More importantly, due to mimicking
receptive field mechanism to collect regional information, RVSM can filter high
intensity noise effectively and improves the problem that Spike camera is
sensitive to noise largely. Besides, due to the strong generalization of
sampling structure, RVSM is also suitable for other neuromorphic vision sensor.
Above experiments are finished in a Spike camera simulator.
|
[{'version': 'v1', 'created': 'Tue, 4 Jan 2022 08:14:56 GMT'}]
|
2022-01-05
|
[array(['Hu', 'Liwen', ''], dtype=object)
array(['Ma', 'Lei', ''], dtype=object)
array(['Weng', 'Dawei', ''], dtype=object)
array(['Huang', 'Tiejun', ''], dtype=object)]
|
7,076 |
2212.04102
|
M Meuwly
|
Seyedeh Maryam Salehi, Marco Pezzella, Adam Willard, Markus Meuwly,
and Martin Karplus
|
Water Dynamics around T0 vs. R4 of Hemoglobin from Local Hydrophobicity
Analysis
| null | null | null | null |
physics.chem-ph physics.bio-ph
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
The local hydration around tetrameric Hb in its T$_0$ and R$_4$
conformational substates is analyzed based on molecular dynamics simulations.
Analysis of the local hydrophobicity (LH) for all residues at the $\alpha_1
\beta_2$ and $\alpha_2 \beta_1$ interfaces, responsible for the quaternary
T$\rightarrow$R transition, which is encoded in the MWC model, as well as
comparison with earlier computations of the solvent accessible surface area
(SASA), makes clear that the two quantities measure different aspects of
hydration. Local hydrophobicity quantifies the presence and structure of water
molecules at the interface whereas ``buried surface'' reports on the available
space for solvent. For simulations with Hb frozen in its T$_0$ and R$_4$ states
the correlation coefficient between LH and buried surface is 0.36 and 0.44,
respectively, but it increases considerably if the 95 \% confidence interval is
used. The LH with Hb frozen and flexible changes little for most residues at
the interfaces but is significantly altered for a few select ones, which are
Thr41$\alpha$, Tyr42$\alpha$, Tyr140$\alpha$, Trp37$\beta$, Glu101$\beta$ (for
T$_0$) and Thr38$\alpha$, Tyr42$\alpha$, Tyr140$\alpha$ (for R$_4$). The number
of water molecules at the interface is found to increase by $\sim 25$ \% for
T$_0$$\rightarrow$R$_4$ which is consistent with earlier measurements. Since
hydration is found to be essential to protein function, it is clear that
hydration also plays an essential role in allostery.
|
[{'version': 'v1', 'created': 'Thu, 8 Dec 2022 06:39:33 GMT'}]
|
2022-12-09
|
[array(['Salehi', 'Seyedeh Maryam', ''], dtype=object)
array(['Pezzella', 'Marco', ''], dtype=object)
array(['Willard', 'Adam', ''], dtype=object)
array(['Meuwly', 'Markus', ''], dtype=object)
array(['Karplus', 'Martin', ''], dtype=object)]
|
7,077 |
1509.08276
|
Bal\'azs Keszegh
|
D\'aniel Gerbner, Bal\'azs Keszegh, D\"om\"ot\"or P\'alv\"olgyi,
Bal\'azs Patk\'os, M\'at\'e Vizer, G\'abor Wiener
|
Finding a non-minority ball with majority answers
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Suppose we are given a set of $n$ balls $\{b_1,\ldots,b_n\}$ each colored
either red or blue in some way unknown to us. To find out some information
about the colors, we can query any triple of balls
$\{b_{i_1},b_{i_2},b_{i_3}\}$. As an answer to such a query we obtain (the
index of) a {\em majority ball}, that is, a ball whose color is the same as the
color of another ball from the triple. Our goal is to find a {\em non-minority
ball}, that is, a ball whose color occurs at least $\frac n2$ times among the
$n$ balls. We show that the minimum number of queries needed to solve this
problem is $\Theta(n)$ in the adaptive case and $\Theta(n^3)$ in the
non-adaptive case. We also consider some related problems.
|
[{'version': 'v1', 'created': 'Mon, 28 Sep 2015 11:22:54 GMT'}
{'version': 'v2', 'created': 'Wed, 28 Sep 2016 13:09:34 GMT'}]
|
2016-09-29
|
[array(['Gerbner', 'Dániel', ''], dtype=object)
array(['Keszegh', 'Balázs', ''], dtype=object)
array(['Pálvölgyi', 'Dömötör', ''], dtype=object)
array(['Patkós', 'Balázs', ''], dtype=object)
array(['Vizer', 'Máté', ''], dtype=object)
array(['Wiener', 'Gábor', ''], dtype=object)]
|
7,078 |
1310.6788
|
Frank Ferrari
|
Frank Ferrari (ULB and Intl. Solvay Institutes)
|
Gauge Theories, D-Branes and Holography
|
55 pages, 7 figures; v2: typos corrected
| null |
10.1016/j.nuclphysb.2014.01.007
| null |
hep-th hep-lat
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Based on a generalization of the string theoretic concept of D-brane probe,
we propose a new approach to large N gauge theories which makes the holographic
properties manifest. For any gauge theory, we define from first principles an
effective action for a fixed number of "probe" D-branes in the presence of N
"background" D-branes on which the gauge theory lives. This effective action is
shown to encode all the information about the large N gauge theory. The
analysis of the planar diagram expansion which computes the effective action
yields a simple and generic mechanism explaining the emergence of holographic
space dimensions: the probe D-branes move in a higher dimensional dual
holographic space-time. The construction yields a new perspective on the notion
of bulk space-time locality and draws unexpected links with some aspects of the
't Hooft Abelian projection ideas. It also provides a new non-perturbative
approximation scheme, able to capture both the weak and strong coupling
regimes. We sketchily illustrate the basic ideas on a few examples, including
the pure four dimensional Yang-Mills theory.
|
[{'version': 'v1', 'created': 'Thu, 24 Oct 2013 22:53:24 GMT'}
{'version': 'v2', 'created': 'Fri, 9 May 2014 17:15:53 GMT'}]
|
2014-05-12
|
[array(['Ferrari', 'Frank', '', 'ULB and Intl. Solvay Institutes'],
dtype=object) ]
|
7,079 |
1806.05606
|
Detlef Klimm
|
Tamino Hirsch, Christo Guguschev, Albert Kwasniewski, Steffen
Ganschow, Detlef Klimm
|
Investigation of the Nd$_2$O$_3$--Lu$_2$O$_3$--Sc$_2$O$_3$ phase diagram
for the preparation of perovskite-type mixed crystals NdLu$_{1-x}$Sc$_x$O$_3$
|
16 pages, 8 figures, submitted to J. Crystal Growth
| null |
10.1016/j.jcrysgro.2018.10.003
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Based on differential thermal analysis (DTA) and X-ray powder diffraction
(XRD), a description of the system Nd$_2$O$_3$--Lu$_2$O$_3$--Sc$_2$O$_3$ was
obtained by thermodynamic assessment. Four fields of primary crystallization
could be identified; from melt compositions close to the
Lu$_2$O$_3$--Sc$_2$O$_3$ edge the rare-earth oxide C-phase crystallizes first,
which is stable down to room temperature. From Nd$_2$O$_3$ rich melts the
X-phase forms, which is stable only at high temperatures. An additional field,
where the alternative high-temperature phase H solidifies as primary product
touches the Nd$_2$O$_3$--Lu$_2$O$_3$ edge of the concentration triangle. From
melts close to the composition NdScO$_3$, the P-phase (perovskite) can be
crystallized and mixed crystals with second end member NdLuO$_3$ have been
grown from the melt. Crystals of this mixed perovskite were grown by the
micro-pulling-down and Czochralski methods.
|
[{'version': 'v1', 'created': 'Thu, 14 Jun 2018 15:23:13 GMT'}]
|
2018-11-14
|
[array(['Hirsch', 'Tamino', ''], dtype=object)
array(['Guguschev', 'Christo', ''], dtype=object)
array(['Kwasniewski', 'Albert', ''], dtype=object)
array(['Ganschow', 'Steffen', ''], dtype=object)
array(['Klimm', 'Detlef', ''], dtype=object)]
|
7,080 |
1807.05439
|
Shihao Wu
|
Shihao Wu, Hui Huang, Tiziano Portenier, Matan Sela, Danny Cohen-Or,
Ron Kimmel, Matthias Zwicker
|
Specular-to-Diffuse Translation for Multi-View Reconstruction
|
Accepted to ECCV 2018
| null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
Most multi-view 3D reconstruction algorithms, especially when
shape-from-shading cues are used, assume that object appearance is
predominantly diffuse. To alleviate this restriction, we introduce S2Dnet, a
generative adversarial network for transferring multiple views of objects with
specular reflection into diffuse ones, so that multi-view reconstruction
methods can be applied more effectively. Our network extends unsupervised
image-to-image translation to multi-view "specular to diffuse" translation. To
preserve object appearance across multiple views, we introduce a Multi-View
Coherence loss (MVC) that evaluates the similarity and faithfulness of local
patches after the view-transformation. Our MVC loss ensures that the similarity
of local correspondences among multi-view images is preserved under the
image-to-image translation. As a result, our network yields significantly
better results than several single-view baseline techniques. In addition, we
carefully design and generate a large synthetic training data set using
physically-based rendering. During testing, our network takes only the raw
glossy images as input, without extra information such as segmentation masks or
lighting estimation. Results demonstrate that multi-view reconstruction can be
significantly improved using the images filtered by our network. We also show
promising performance on real world training and testing data.
|
[{'version': 'v1', 'created': 'Sat, 14 Jul 2018 20:51:30 GMT'}
{'version': 'v2', 'created': 'Wed, 18 Jul 2018 13:53:02 GMT'}
{'version': 'v3', 'created': 'Mon, 30 Jul 2018 16:13:07 GMT'}]
|
2018-07-31
|
[array(['Wu', 'Shihao', ''], dtype=object)
array(['Huang', 'Hui', ''], dtype=object)
array(['Portenier', 'Tiziano', ''], dtype=object)
array(['Sela', 'Matan', ''], dtype=object)
array(['Cohen-Or', 'Danny', ''], dtype=object)
array(['Kimmel', 'Ron', ''], dtype=object)
array(['Zwicker', 'Matthias', ''], dtype=object)]
|
7,081 |
1411.0973
|
Andrew Winslow
|
Benjamin Hescott, Caleb Malchik, Andrew Winslow
|
More Tight Bounds for Active Self-Assembly Using an Insertion Primitive
|
A subset of the results appear in arXiv:1401.0359 and the proceedings
of ESA 2014
| null | null | null |
cs.DS cs.ET cs.FL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove several limits on the behavior of a model of self-assembling
particles introduced by Dabby and Chen (SODA 2013), called insertion systems,
where monomers insert themselves into the middle of a growing linear polymer.
First, we prove that the expressive power of these systems is equal to
context-free grammars, answering a question posed by Dabby and Chen.
Second, we give tight bounds on the maximum length and minimum expected time
of constructed polymers in systems of three increasingly restricted classes. We
prove that systems of $k$ monomer types can deterministically construct
polymers of length $n = 2^{\Theta(k^{3/2})}$ in $O(\log^{5/3}(n))$ expected
time. We also prove that if non-deterministic construction of a finite number
of polymers is permitted, then the expected construction time can be reduced to
$O(\log^{3/2}(n))$ at the trade-off of decreasing the length to
$2^{\Theta(k)}$. If the system is allowed to construct an infinite number of
polymers, then constructing polymers of unbounded length in $O(\log{n})$
expected time is possible. We follow these positive results with a set of lower
bounds proving that these are the best possible polymer lengths and expected
construction times.
|
[{'version': 'v1', 'created': 'Tue, 4 Nov 2014 17:14:44 GMT'}
{'version': 'v2', 'created': 'Thu, 13 Nov 2014 14:47:06 GMT'}]
|
2015-10-29
|
[array(['Hescott', 'Benjamin', ''], dtype=object)
array(['Malchik', 'Caleb', ''], dtype=object)
array(['Winslow', 'Andrew', ''], dtype=object)]
|
7,082 |
quant-ph/0209068
|
Mark P. Davidson
|
Mark P. Davidson
|
An analysis of semiclassical radiation from single particle quantum
currents shows surprising results
| null |
Annales Fondation Louis de Broglie, Volume 30, no 3-4, 2005 pp.
259-272
| null | null |
quant-ph
| null |
Classical electromagnetic radiation from quantum currents and densities are
calculated. For the free Schrodinger equation with no external force it's found
that the classical radiation is zero to all orders of the multipole expansion.
This is true of mixed or pure states for the charged particle. It is a
non-trivial and surprising result. A similar result is found for the
Klein-Gordon currents when the wave function consists of only positive energy
solutions. For the Dirac equation it is found that radiation is suppressed at
lower frequencies but is not zero at all frequencies. Implications of these
results for the interpretation of quantum mechanics are discussed.
|
[{'version': 'v1', 'created': 'Tue, 10 Sep 2002 00:55:38 GMT'}
{'version': 'v2', 'created': 'Thu, 30 Mar 2006 22:21:40 GMT'}]
|
2007-05-23
|
[array(['Davidson', 'Mark P.', ''], dtype=object)]
|
7,083 |
2005.12381
|
Sabyasachi Tarat
|
Sabyasachi Tarat, Jian Li, Richard T. Scalettar and Rubem Mondaini
|
Magnetic order and transport in a spin-fermion model on a superlattice
|
To appear in PRB
|
Phys. Rev. B 102, 094423 (2020)
|
10.1103/PhysRevB.102.094423
| null |
cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a spin-fermion model consisting of free electrons coupled to
classical spins, where the latter are embedded in a quasi one-dimensional
superlattice structure consisting of spin blocks separated by spinless buffers.
Using a spiral ansatz for the spins, we study the effect of the electron
mediated Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction on the $T=0$ ground
state of the system. We find that the RKKY interaction can lead to
ferromagnetic, antiferromagnetic, or intermediate spiral phases for different
system parameters. When the width is much larger than the length of the
individual blocks, the spiral phases are suppressed, and the ground state
oscillates between ferromagnetic and antiferromagnetic order as the size of the
buffer regions is varied. This is accompanied by a corresponding oscillation in
the Drude weight reflecting an increased conductivity in the ferromagnetic
state compared to the antiferromagnetic one. These results are reminiscent of
classic giant magnetoresistance phenomena observed in a similar geometry of
thin, sandwiched magnetic and non-magnetic layers. Our analysis provides a
robust framework for understanding the role of the RKKY interaction on the
ground state order and corresponding transport properties of such systems,
extending beyond the conventional perturbative regime.
|
[{'version': 'v1', 'created': 'Mon, 25 May 2020 20:28:14 GMT'}
{'version': 'v2', 'created': 'Mon, 31 Aug 2020 01:41:58 GMT'}]
|
2020-09-30
|
[array(['Tarat', 'Sabyasachi', ''], dtype=object)
array(['Li', 'Jian', ''], dtype=object)
array(['Scalettar', 'Richard T.', ''], dtype=object)
array(['Mondaini', 'Rubem', ''], dtype=object)]
|
7,084 |
1904.09450
|
David T Stephen
|
David T. Stephen, Henrik Dreyer, Mohsin Iqbal, Norbert Schuch
|
Detecting subsystem symmetry protected topological order via
entanglement entropy
|
17 pages. v2: Published version, minor changes throughout
|
Phys. Rev. B 100, 115112 (2019)
|
10.1103/PhysRevB.100.115112
| null |
cond-mat.str-el quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Subsystem symmetry protected topological (SSPT) order is a type of quantum
order that is protected by symmetries acting on lower-dimensional subsystems of
the entire system. In this paper, we show how SSPT order can be characterized
and detected by a constant correction to the entanglement area law, similar to
the topological entanglement entropy. Focusing on the paradigmatic
two-dimensional cluster phase as an example, we use tensor network methods to
give an analytic argument that almost all states in the phase exhibit the same
correction to the area law, such that this correction may be used to reliably
detect the SSPT order of the cluster phase. Based on this idea, we formulate a
numerical method that uses tensor networks to extract this correction from
ground-state wave functions. We use this method to study the fate of the SSPT
order of the cluster state under various external fields and interactions, and
find that the correction persists unless a phase transition is crossed, or the
subsystem symmetry is explicitly broken. Surprisingly, these results uncover
that the SSPT order of the cluster state persists beyond the cluster phase,
thanks to a new type of subsystem time-reversal symmetry. Finally, we discuss
the correction to the area law found in three-dimensional cluster states on
different lattices, indicating rich behavior for general subsystem symmetries
|
[{'version': 'v1', 'created': 'Sat, 20 Apr 2019 14:57:40 GMT'}
{'version': 'v2', 'created': 'Thu, 5 Sep 2019 15:23:12 GMT'}]
|
2019-09-06
|
[array(['Stephen', 'David T.', ''], dtype=object)
array(['Dreyer', 'Henrik', ''], dtype=object)
array(['Iqbal', 'Mohsin', ''], dtype=object)
array(['Schuch', 'Norbert', ''], dtype=object)]
|
7,085 |
gr-qc/9804022
|
Winfried Zimdahl
|
Winfried Zimdahl and Diego Pavon
|
Covariant cosmological perturbation dynamics in the large-scale limit
|
4 pages, Revtex, to appear in PRD
|
Phys.Rev. D57 (1998) 7607-7610
|
10.1103/PhysRevD.57.7607
| null |
gr-qc astro-ph
| null |
Using the existence of a covariant conserved quantity on large perturbation
scales in a spatially flat perfect fluid or scalar field universe, we present a
general formula for gauge-invariantly defined comoving energy density
perturbations which encodes the entire linear perturbation dynamics in a closed
time integral. On this basis we discuss perturbation modes in different
cosmological epochs.
|
[{'version': 'v1', 'created': 'Tue, 7 Apr 1998 09:48:57 GMT'}]
|
2009-10-31
|
[array(['Zimdahl', 'Winfried', ''], dtype=object)
array(['Pavon', 'Diego', ''], dtype=object)]
|
7,086 |
hep-th/9812102
|
Wifredo Garcia Fuertes
|
W. Garcia Fuertes (Universidad de Oviedo) and J. Mateos Guilarte
(Universidad de Salamanca)
|
On the solitons of the Chern-Simons-Higgs model
|
27 pages, 3 figures, to appear in The European Physical Journal C
|
Eur.Phys.J.C9:167-179,1999
|
10.1007/s100529900015
|
FFUOV-98-17, FTUS preprint (Universidad de Salamanca)
|
hep-th
| null |
Several issues concerning the self-dual solutions of the Chern-Simons-Higgs
model are addressed. The topology of the configuration space of the model is
analysed when the space manifold is either the plane or an infinite cylinder.
We study the local structure of the moduli space of self-dual solitons in the
second case by means of an index computation. It is shown how to manage the
non-integer contribution to the heat-kernel supertrace due to the
non-compactness of the base space. A physical picture of the local coordinates
parametrizing the non-topological soliton moduli space arises .
|
[{'version': 'v1', 'created': 'Sat, 12 Dec 1998 19:32:35 GMT'}]
|
2011-09-13
|
[array(['Fuertes', 'W. Garcia', '', 'Universidad de Oviedo'], dtype=object)
array(['Guilarte', 'J. Mateos', '', 'Universidad de Salamanca'],
dtype=object) ]
|
7,087 |
2009.09805
|
Shuang Ma
|
Shuang Ma, Zhaoyang Zeng, Daniel McDuff, Yale Song
|
Active Contrastive Learning of Audio-Visual Video Representations
| null | null | null | null |
cs.LG cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Contrastive learning has been shown to produce generalizable representations
of audio and visual data by maximizing the lower bound on the mutual
information (MI) between different views of an instance. However, obtaining a
tight lower bound requires a sample size exponential in MI and thus a large set
of negative samples. We can incorporate more samples by building a large
queue-based dictionary, but there are theoretical limits to performance
improvements even with a large number of negative samples. We hypothesize that
\textit{random negative sampling} leads to a highly redundant dictionary that
results in suboptimal representations for downstream tasks. In this paper, we
propose an active contrastive learning approach that builds an \textit{actively
sampled} dictionary with diverse and informative items, which improves the
quality of negative samples and improves performances on tasks where there is
high mutual information in the data, e.g., video classification. Our model
achieves state-of-the-art performance on challenging audio and visual
downstream benchmarks including UCF101, HMDB51 and ESC50.\footnote{Code is
available at: \url{https://github.com/yunyikristy/CM-ACC}}
|
[{'version': 'v1', 'created': 'Mon, 31 Aug 2020 21:18:30 GMT'}
{'version': 'v2', 'created': 'Fri, 16 Apr 2021 22:16:18 GMT'}]
|
2021-04-20
|
[array(['Ma', 'Shuang', ''], dtype=object)
array(['Zeng', 'Zhaoyang', ''], dtype=object)
array(['McDuff', 'Daniel', ''], dtype=object)
array(['Song', 'Yale', ''], dtype=object)]
|
7,088 |
1605.01156
|
Yunjie Liu
|
Yunjie Liu, Evan Racah, Prabhat, Joaquin Correa, Amir Khosrowshahi,
David Lavers, Kenneth Kunkel, Michael Wehner, William Collins
|
Application of Deep Convolutional Neural Networks for Detecting Extreme
Weather in Climate Datasets
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Detecting extreme events in large datasets is a major challenge in climate
science research. Current algorithms for extreme event detection are build upon
human expertise in defining events based on subjective thresholds of relevant
physical variables. Often, multiple competing methods produce vastly different
results on the same dataset. Accurate characterization of extreme events in
climate simulations and observational data archives is critical for
understanding the trends and potential impacts of such events in a climate
change content. This study presents the first application of Deep Learning
techniques as alternative methodology for climate extreme events detection.
Deep neural networks are able to learn high-level representations of a broad
class of patterns from labeled data. In this work, we developed deep
Convolutional Neural Network (CNN) classification system and demonstrated the
usefulness of Deep Learning technique for tackling climate pattern detection
problems. Coupled with Bayesian based hyper-parameter optimization scheme, our
deep CNN system achieves 89\%-99\% of accuracy in detecting extreme events
(Tropical Cyclones, Atmospheric Rivers and Weather Fronts
|
[{'version': 'v1', 'created': 'Wed, 4 May 2016 06:38:19 GMT'}]
|
2016-05-05
|
[array(['Liu', 'Yunjie', ''], dtype=object)
array(['Racah', 'Evan', ''], dtype=object)
array(['Prabhat', '', ''], dtype=object)
array(['Correa', 'Joaquin', ''], dtype=object)
array(['Khosrowshahi', 'Amir', ''], dtype=object)
array(['Lavers', 'David', ''], dtype=object)
array(['Kunkel', 'Kenneth', ''], dtype=object)
array(['Wehner', 'Michael', ''], dtype=object)
array(['Collins', 'William', ''], dtype=object)]
|
7,089 |
1207.0058
|
Yuriy Kuzovlev E.
|
Yu.E.Kuzovlev
|
Quantum Brownian motion and a theorem on fundamental 1/f noise
|
10 pages, no figures, latex2e iopart
| null | null |
DonPTI-12-YUK-08
|
cond-mat.stat-mech quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider quantum Hamiltonian systems composed of mutually interacting
"dynamical subsystem" with one or several degrees of freedom and "thermostat"
with arbitrary many degrees of freedom, under assumptions that the interaction
ensures irreversible behavior of the dynamical subsystem, that is finite
diffusivities of its coordinates in thermodynamically equilibrium state and
finite drift velocities and mobilities in non-equilibrium steady state in
presence of external driving forces. It is shown that, nevertheless, regardless
of characteristics of the interaction, the diffusivity and mobility have no
certain values but instead vary from one observation to another and undergo
1/f-type or flicker-type low-frequency fluctuations.
|
[{'version': 'v1', 'created': 'Sat, 30 Jun 2012 08:07:40 GMT'}]
|
2012-07-03
|
[array(['Kuzovlev', 'Yu. E.', ''], dtype=object)]
|
7,090 |
1907.02940
|
Jae Seo
|
Jae Duk Seo
|
Visualizing Uncertainty and Saliency Maps of Deep Convolutional Neural
Networks for Medical Imaging Applications
| null | null | null | null |
cs.LG cs.CV eess.IV stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Deep learning models are now used in many different industries, while in
certain domains safety is not a critical issue in the medical field it is a
huge concern. Not only, we want the models to generalize well but we also want
to know the models confidence respect to its decision and which features matter
the most. Our team aims to develop a full pipeline in which not only displays
the uncertainty of the models decision but also, the saliency map to show which
sets of pixels of the input image contribute most to the predictions.
|
[{'version': 'v1', 'created': 'Fri, 5 Jul 2019 17:23:04 GMT'}]
|
2019-07-08
|
[array(['Seo', 'Jae Duk', ''], dtype=object)]
|
7,091 |
1010.3096
|
Deniz Turgut Mr
|
Deniz Turgut, Ali Rana Atilgan, Canan Atilgan
|
Assortative Mixing in Close-Packed Spatial Networks
|
24 pages, 4 figures
| null |
10.1371/journal.pone.0015551
| null |
cond-mat.dis-nn cs.SI physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A general relation for the dependence of nearest neighbor degree correlations
on degree is derived. Dependence of local clustering on degree is shown to be
the sole determining factor of assortative versus disassortative mixing in
networks. The characteristics of networks derived from spatial atomic/molecular
systems exemplified by self-organized residue networks and block copolymers,
atomic clusters and well-compressed polymeric melts are studied. Distributions
of statistical properties of the networks are presented. For these
densely-packed systems, assortative mixing in the network construction is found
to apply, and conditions are derived for a simple linear dependence. Together,
these measures (i) reveal patterns that are common to close-packed clusters of
atoms/molecules, (ii) identify the type of surface effects prominent in
different systems, and (iii) associate fingerprints that may be used to
classify networks with varying types of correlations.
|
[{'version': 'v1', 'created': 'Fri, 15 Oct 2010 08:31:59 GMT'}]
|
2015-05-20
|
[array(['Turgut', 'Deniz', ''], dtype=object)
array(['Atilgan', 'Ali Rana', ''], dtype=object)
array(['Atilgan', 'Canan', ''], dtype=object)]
|
7,092 |
2210.14059
|
Sergey Bezuglyi
|
Sergey Bezuglyi and Palle E.T. Jorgensen
|
IFS measures on generalized Bratteli diagrams
| null | null | null | null |
math.DS math.FA math.PR
|
http://creativecommons.org/licenses/by/4.0/
|
The purpose of the paper is a general analysis of path space
measures. Our focus is a certain path space analysis
on generalized Bratteli diagrams. We use this in a systematic study of
systems of self-similar measures (the term ``IFS measures'' is used in the
paper) for both types of such diagrams, discrete and continuous. In special
cases, such measures arise in the study of iterated function
systems (IFS). In the literature, similarity may be defined by,
e.g., systems of affine maps (Sierpinski), or systems of conformal
maps (Julia). We study new classes of semi-branching
function systems related to stationary Bratteli diagrams. The
latter plays a big role in our understanding
of new forms of harmonic analysis on fractals. The measures
considered here arise in classes of discrete-time, multi-level
dynamical systems where similarity is specified between levels.
These structures are made precise by prescribed systems of
functions which in turn serve to define self-similarity, i.e., the similarity
of large scales, and small scales.
For path space systems, in our main result, we give a necessary and
sufficient condition for the existence of such generalized IFS measures. For
the corresponding semi-branching function systems, we further identify the
measures which are also shift-invariant.
|
[{'version': 'v1', 'created': 'Tue, 25 Oct 2022 14:38:01 GMT'}]
|
2022-10-26
|
[array(['Bezuglyi', 'Sergey', ''], dtype=object)
array(['Jorgensen', 'Palle E. T.', ''], dtype=object)]
|
7,093 |
1312.5482
|
Urs Wiedemann A
|
Stefan Floerchinger, Urs Achim Wiedemann, Andrea Beraudo, Luca Del
Zanna, Gabriele Inghirami, Valentina Rolando
|
How (non-) linear is the hydrodynamics of heavy ion collisions?
|
8 pages, 4 figures
| null |
10.1016/j.physletb.2014.06.049
|
CERN-PH-TH/2013-306
|
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We provide evidence from full numerical solutions that the hydrodynamical
evolution of initial density fluctuations in heavy ion collisions can be
understood order-by-order in a perturbative series in deviations from a smooth
and azimuthally symmetric background solution. To leading linear order, modes
with different azimuthal wave numbers do not mix. Quadratic and higher order
corrections are small and can be understood as overtones with corresponding
wave numbers.
|
[{'version': 'v1', 'created': 'Thu, 19 Dec 2013 11:15:33 GMT'}]
|
2015-06-18
|
[array(['Floerchinger', 'Stefan', ''], dtype=object)
array(['Wiedemann', 'Urs Achim', ''], dtype=object)
array(['Beraudo', 'Andrea', ''], dtype=object)
array(['Del Zanna', 'Luca', ''], dtype=object)
array(['Inghirami', 'Gabriele', ''], dtype=object)
array(['Rolando', 'Valentina', ''], dtype=object)]
|
7,094 |
1809.07516
|
Matteo Burzoni
|
Erhan Bayraktar, Matteo Burzoni
|
On the quasi-sure superhedging duality with frictions
|
Final version. To appear in Finance and Stochastics
| null | null | null |
q-fin.MF
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove the superhedging duality for a discrete-time financial market with
proportional transaction costs under model uncertainty. Frictions are modeled
through solvency cones as in the original model of [Kabanov, Y., Hedging and
liquidation under transaction costs in currency markets. Fin. Stoch.,
3(2):237-248, 1999] adapted to the quasi-sure setup of [Bouchard, B. and Nutz,
M., Arbitrage and duality in nondominated discrete-time models. Ann. Appl.
Probab., 25(2):823-859, 2015]. Our approach allows to remove the restrictive
assumption of No Arbitrage of the Second Kind considered in [Bouchard, B.,
Deng, S. and Tan, X., Super-replication with proportional transaction cost
under model uncertainty, Math. Fin., 29(3):837-860, 2019] and to show the
duality under the more natural condition of No Strict Arbitrage. In addition,
we extend the results to models with portfolio constraints.
|
[{'version': 'v1', 'created': 'Thu, 20 Sep 2018 07:56:55 GMT'}
{'version': 'v2', 'created': 'Mon, 24 Jun 2019 12:09:52 GMT'}
{'version': 'v3', 'created': 'Wed, 18 Sep 2019 17:41:03 GMT'}]
|
2019-09-19
|
[array(['Bayraktar', 'Erhan', ''], dtype=object)
array(['Burzoni', 'Matteo', ''], dtype=object)]
|
7,095 |
1312.0665
|
Christoph Aistleitner
|
Christoph Aistleitner, Istvan Berkes, Robert Tichy
|
On permutations of Hardy-Littlewood-P\'olya sequences
|
Dedicated to the memory of Walter Philipp
|
Trans. Amer. Math. Soc. 363 (2011), no. 12, 6219-6244
| null | null |
math.NT math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let ${\cal H}=(q_1, \ldots q_r)$ be a finite set of coprime integers and let
$n_1, n_2, \ldots$ denote the multiplicative semigroup generated by $\cal H$
and arranged in increasing order. The distribution of such sequences has been
studied intensively in number theory and they have remarkable probabilistic and
ergodic properties. For example, the asymptotic properties of the sequence
$\{n_kx\}$ are very similar to those of independent, identically distributed
random variables; here $\{\cdot \}$ denotes fractional part. However, the
behavior of this sequence depends sensitively on the generating elements of
$(n_k)$ and the combination of probabilistic and number-theoretic effects
results in a unique, highly interesting asymptotic behavior. In particular, the
properties of $\{n_kx\}$ are not permutation invariant, in contrast to i.i.d.
behavior. The purpose of this paper is to show that $\{n_kx\}$ satisfies a
strong independence property ("interlaced mixing"), enabling one to determine
the precise asymptotic behavior of permuted sums $S_N (\sigma)= \sum_{k=1}^N
f(n_{\sigma(k)} x)$. As we will see, the behavior of $S_N(\sigma)$ still
follows that of sums of independent random variables, but its growth speed
(depending on $\sigma$) is given by the classical G\'al function of Diophantine
approximation theory. Some examples describing the class of possible growth
functions are given.
|
[{'version': 'v1', 'created': 'Tue, 3 Dec 2013 00:22:44 GMT'}
{'version': 'v2', 'created': 'Fri, 10 Jan 2014 01:28:23 GMT'}]
|
2014-01-13
|
[array(['Aistleitner', 'Christoph', ''], dtype=object)
array(['Berkes', 'Istvan', ''], dtype=object)
array(['Tichy', 'Robert', ''], dtype=object)]
|
7,096 |
nlin/0103003
|
Wieslaw Krolikowski
|
Wieslaw Krolikowski, Ole Bang, Jens Juul Rasmuss, John Wyller
|
Modulational instability in nonlocal nonlinear Kerr media
|
8 pages, submitted to Phys. Rev. E
| null |
10.1103/PhysRevE.64.016612
| null |
nlin.PS
| null |
We study modulational instability (MI) of plane waves in nonlocal nonlinear
Kerr media. For a focusing nonlinearity we show that, although the nonlocality
tends to suppress MI, it can never remove it completely, irrespectively of the
particular profile of the nonlocal response function. For a defocusing
nonlinearity the stability properties depend sensitively on the response
function profile: for a smooth profile (e.g., a Gaussian) plane waves are
always stable, but MI may occur for a rectangular response. We also find that
the reduced model for a weak nonlocality predicts MI in defocusing media for
arbitrary response profiles, as long as the intensity exceeds a certain
critical value. However, it appears that this regime of MI is beyond the
validity of the reduced model, if it is to represent the weakly nonlocal limit
of a general nonlocal nonlinearity, as in optics and the theory of
Bose-Einstein condensates.
|
[{'version': 'v1', 'created': 'Mon, 5 Mar 2001 03:52:51 GMT'}]
|
2009-11-07
|
[array(['Krolikowski', 'Wieslaw', ''], dtype=object)
array(['Bang', 'Ole', ''], dtype=object)
array(['Rasmuss', 'Jens Juul', ''], dtype=object)
array(['Wyller', 'John', ''], dtype=object)]
|
7,097 |
1310.4563
|
Tam\'as Forg\'acs
|
Tam\'as Forg\'acs, James Haley III, Rebecca Menke and Carlee Simon
|
The non-existence of cubic Legendre multiplier sequences
|
Several typos were corrected. Sections 2 and 3 were reorganized with
added definitions. The appendix was incorporated into the body, the statement
and proof of Lemma 4 was corrected. The proofs of Lemma 2 and Theorem 5 were
streamlined, and several new references were added
|
Involve - a Journal of Mathematics, 7-6 (2014), 773--786
|
10.2140/involve.2014.7.773
| null |
math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The main result in this paper is the proof of the recently conjectured
non-existence of cubic Legendre multiplier sequences. We also give an
alternative proof of the non-existence of linear Legendre multiplier sequences,
using a method that will allow for a more methodical treatment of sequences
interpolated by higher degree polynomials.
|
[{'version': 'v1', 'created': 'Thu, 17 Oct 2013 02:26:26 GMT'}
{'version': 'v2', 'created': 'Thu, 9 Jan 2014 00:23:34 GMT'}]
|
2015-05-05
|
[array(['Forgács', 'Tamás', ''], dtype=object)
array(['Haley', 'James', 'III'], dtype=object)
array(['Menke', 'Rebecca', ''], dtype=object)
array(['Simon', 'Carlee', ''], dtype=object)]
|
7,098 |
astro-ph/0607515
|
Todor Stanev
|
Todor Stanev
|
Ultra high energy neutrinos: the key to ultra high energy cosmic rays
|
12 pages, 5 figures, Talk presented at the Vulcano06 workshop. Second
version with some typos removed
| null | null | null |
astro-ph
| null |
We discuss the relation between the acceleration spectra of extragalactic
cosmic ray protons and the luminosity and cosmological evolution of their
sources and the production of ultra high energy cosmogenic neutrinos in their
propagation from the sources to us.
|
[{'version': 'v1', 'created': 'Mon, 24 Jul 2006 19:38:07 GMT'}
{'version': 'v2', 'created': 'Mon, 24 Jul 2006 20:38:41 GMT'}
{'version': 'v3', 'created': 'Wed, 26 Jul 2006 15:55:45 GMT'}]
|
2007-05-23
|
[array(['Stanev', 'Todor', ''], dtype=object)]
|
7,099 |
math/0005075
|
Stefan Schroeer
|
Stefan Schroeer
|
Logarithmic deformations of normal crossing Enriques surfaces in
characteristic two
|
21 pages, 5 figures, minor changes, to appear in Math. Proc.
Cambridge Philos. Soc
|
Math. Proc. Cambridge Philos. Soc. 134 (2003), 207-228.
|
10.1017/S0305004102006333
| null |
math.AG
| null |
Working in characteristic two, I classify nonsmooth Enriques surfaces with
normal crossing singularities. Using Kato's theory of logarithmic structures, I
show that such surfaces are smoothable and lift to characteristic zero,
provided they are d-semistable.
|
[{'version': 'v1', 'created': 'Mon, 8 May 2000 12:50:42 GMT'}
{'version': 'v2', 'created': 'Fri, 29 Jun 2001 12:38:53 GMT'}]
|
2015-06-26
|
[array(['Schroeer', 'Stefan', ''], dtype=object)]
|
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