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|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
18,800 |
0709.0216
|
Stefan G. Frauendorf
|
S. Frauendorf
|
Heart - Shaped Nuclei: Condensation of Rotational Aligned Octupole
Phonons
|
9 figures, revised content
|
Phys.Rev.C77:021304,2008
|
10.1103/PhysRevC.77.021304
| null |
nucl-th
| null |
The strong octupole correlations in the mass region $A\approx 226$ are
interpreted as rotation-induced condensation of octupole phonons having their
angular momentum aligned with the rotational axis. Discrete phonon energy and
parity conservation generate oscillations of the energy difference between the
lowest rotational bands with positive and negative parity. Anharmonicities tend
to synchronize the the rotation of the condensate and the quadrupole shape of
the nucleus forming a rotating heart shape.
|
[{'version': 'v1', 'created': 'Mon, 3 Sep 2007 12:51:42 GMT'}
{'version': 'v2', 'created': 'Wed, 24 Oct 2007 22:26:26 GMT'}]
|
2011-02-01
|
[array(['Frauendorf', 'S.', ''], dtype=object)]
|
18,801 |
1304.4608
|
Kurt Jacobs
|
Jie-Qiao Liao, Kurt Jacobs, Franco Nori, Raymond W. Simmonds
|
Modulated Electromechanics: Large Enhancements of Nonlinearities
|
5 pages, revtex4-1, 1 png figure
|
New J. Phys. 16, 072001 (2014) (Fast Track Communication)
|
10.1088/1367-2630/16/7/072001
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is well-known that the nonlinear coupling between a mechanical oscillator
and a superconducting oscillator or optical cavity can be used to generate a
Kerr-nonlinearity for the cavity mode. We show that the strength of this
Kerr-nonlinearity, as well as the effect of the photon-pressure force can be
enormously increased by modulating the strength of the nonlinear coupling. We
present an electromechanical circuit in which this enhancement can be readily
realized.
|
[{'version': 'v1', 'created': 'Tue, 16 Apr 2013 20:21:31 GMT'}]
|
2014-07-18
|
[array(['Liao', 'Jie-Qiao', ''], dtype=object)
array(['Jacobs', 'Kurt', ''], dtype=object)
array(['Nori', 'Franco', ''], dtype=object)
array(['Simmonds', 'Raymond W.', ''], dtype=object)]
|
18,802 |
astro-ph/0404555
|
Motoki Kino
|
Motoki Kino, Akira Mizuta, Shoichi Yamada
|
Hydrodynamical effects in internal shock of relativistic outflows
|
29 pages, 16 figures, accepted by ApJ
|
Astrophys.J. 611 (2004) 1021-1032
|
10.1086/422305
| null |
astro-ph
| null |
We study both analytically and numerically hydrodynamical effects of two
colliding shells, the simplified models of the internal shock in various
relativistic outflows such as gamma-ray bursts and blazars. We pay particular
attention to three interesting cases: a pair of shells with the same rest mass
density (``{\it equal rest mass density}''), a pair of shells with the same
rest mass (``{\it equal mass}''), and a pair of shells with the same bulk
kinetic energy (``{\it equal energy}'') measured in the intersteller medium
(ISM) frame. We find that the density profiles are significantly affected by
the propagation of rarefaction waves. A split-feature appears at the contact
discontinuity of two shells for the ``equal mass'' case, while no significant
split appears for the ``equal energy'' and ``equal rest mass density'' cases.
The shell spreading with a few ten percent of the speed of light is also shown
as a notable aspect caused by rarefaction waves. The conversion efficiency of
the bulk kinetic energy to internal one is numerically evaluated. The time
evolutions of the efficiency show deviations from the widely-used inellastic
two-point-mass-collision model.
|
[{'version': 'v1', 'created': 'Wed, 28 Apr 2004 10:25:24 GMT'}]
|
2009-11-10
|
[array(['Kino', 'Motoki', ''], dtype=object)
array(['Mizuta', 'Akira', ''], dtype=object)
array(['Yamada', 'Shoichi', ''], dtype=object)]
|
18,803 |
2203.01842
|
Thomas Simpson
|
Thomas Simpson, Nikolaos Dervilis, Philippe Couturier, Nico Maljaars
and Eleni Chatzi
|
Nonlinear Reduced Order Modelling of Soil Structure Interaction Effects
via LSTM and Autoencoder Neural Networks
| null | null | null | null |
cs.CE
|
http://creativecommons.org/licenses/by/4.0/
|
In the field of structural health monitoring (SHM), inverse problems which
require repeated analyses are common. With the increase in the use of nonlinear
models, the development of nonlinear reduced order modelling techniques is of
paramount interest. Of considerable research interest, is the use of flexible
and scalable machine learning methods which can learn to approximate the
behaviour of nonlinear dynamic systems using input and output data. One such
nonlinear system of interest, in the context of wind turbine structures, is the
soil structure interaction (SSI) problem. Soil demonstrates strongly nonlinear
behaviour with regards to its restoring force and has been shown to
considerably influence the dynamic response of wind turbine structures. In this
work, we demonstrate the application of a recently developed nonlinear reduced
order modelling method, which leverages Autoencoder and LSTM neural networks,
to a nonlinear soil structure interaction problem of a wind turbine monopile
subject to realistic loading at the seabed level. The accuracy and efficiency
of the methodology is compared to full order simulations carried out using
Abaqus. The ROM was shown to have good fidelity and a considerable reduction in
computational time for the system considered.
|
[{'version': 'v1', 'created': 'Thu, 3 Mar 2022 16:47:09 GMT'}]
|
2022-03-04
|
[array(['Simpson', 'Thomas', ''], dtype=object)
array(['Dervilis', 'Nikolaos', ''], dtype=object)
array(['Couturier', 'Philippe', ''], dtype=object)
array(['Maljaars', 'Nico', ''], dtype=object)
array(['Chatzi', 'Eleni', ''], dtype=object)]
|
18,804 |
2010.04983
|
Duanduan Wan
|
Duanduan Wan and Sharon C. Glotzer
|
Randomness in self-assembled colloidal crystals can widen photonic band
gaps through particle shape and internal structure
|
5 pages, 5 figures
|
Phys. Rev. Lett. 126, 208002 (2021)
|
10.1103/PhysRevLett.126.208002
| null |
cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using computer simulations, we explore how thermal noise-induced randomness
in a self-assembled photonic crystal affects its photonic band gaps (PBGs). We
consider a two-dimensional photonic crystal comprised of a self-assembled array
of parallel dielectric hard rods of infinite length with circular or square
cross section. We find the PBGs can exist over a large range of intermediate
packing densities. Counterintuitively, the largest band gap does not always
appear at the packing density where the crystal is most ordered, despite the
randomness inherent in any self-assembled structure. For rods with square cross
section at intermediate packing densities, we find that the transverse magnetic
(TM) band gap of the self-assembled (i.e. thermal) system can be larger than
that of identical rods arranged in a perfect square lattice. By considering
hollow rods, we find the band gap of transverse electric (TE) modes can be
substantially increased while that of TM modes show no obvious improvement over
solid rods. Our study suggests that particle shape and internal structure can
be used to engineer the PBG of a self-assembled system despite the positional
and orientational randomness arising from thermal noise.
|
[{'version': 'v1', 'created': 'Sat, 10 Oct 2020 12:31:36 GMT'}]
|
2021-05-26
|
[array(['Wan', 'Duanduan', ''], dtype=object)
array(['Glotzer', 'Sharon C.', ''], dtype=object)]
|
18,805 |
cond-mat/0207026
|
S. Anantha Ramakrishna
|
S.Anantha Ramakrishna and J.B. Pendry (Imperial College), M.C.K
Wiltshire and W.J. Stewart (Marconi Caswell)
|
Imaging the Near Field
|
RevTeX, (9 pages, 8 figures)
|
J. Mod. Optics, Vol. 50, pp. 1419-1430 (2003)
|
10.1080/09500340308235215
| null |
cond-mat physics.optics
| null |
In an earlier paper we introduced the concept of the perfect lens which
focuses both near and far electromagnetic fields, hence attaining perfect
resolution. Here we consider refinements of the original prescription designed
to overcome the limitations of imperfect materials. In particular we show that
a multi-layer stack of positive and negative refractive media is less sensitive
to imperfections. It has the novel property of behaving like a fibre-optic
bundle but one that acts on the near field, not just the radiative component.
The effects of retardation are included and minimized by making the slabs
thinner. Absorption then dominates image resolution in the near-field. The
deleterious effects of absorption in the metal are reduced for thinner layers.
|
[{'version': 'v1', 'created': 'Mon, 1 Jul 2002 09:48:45 GMT'}]
|
2015-06-24
|
[array(['Ramakrishna', 'S. Anantha', '', 'Imperial College'], dtype=object)
array(['Pendry', 'J. B.', '', 'Imperial College'], dtype=object)
array(['Wiltshire', 'M. C. K', '', 'Marconi Caswell'], dtype=object)
array(['Stewart', 'W. J.', '', 'Marconi Caswell'], dtype=object)]
|
18,806 |
1712.07969
|
Martin Bernhard Krauss
|
Riccardo Catena, Jan Conrad and Martin B. Krauss
|
Compatibility of a dark matter discovery at XENONnT/LZ with the WIMP
thermal production mechanism
|
16 pages, 7 figures, version accepted by PRD
|
Phys. Rev. D 97, 103002 (2018)
|
10.1103/PhysRevD.97.103002
| null |
hep-ph astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The discovery of dark matter (DM) at XENONnT or LZ would place constraints on
DM particle mass and coupling constants. It is interesting to ask when these
constraints can be compatible with the DM thermal production mechanism. We
address this question within the most general set of renormalisable models that
preserve Lorentz and gauge symmetry, and that extend the Standard Model by one
DM candidate of mass $m_{\rm DM}$ and one particle of mass $M_{med}$ mediating
DM-quark interactions. Our analysis divides into two parts. First, we postulate
that XENONnT/LZ has detected $\mu_S\sim\mathcal{O}(100)$ signal events, and use
this input to calculate the DM relic density, $\Omega_{DM} h^2$. Then, we
identify the regions in the $M_{med} - \Omega_{DM} h^2$ plane which are
compatible with the observed signal and with current CMB data. We find that for
most of the models considered here, $\mathcal{O}(100)$ signal events at
XENONnT/LZ and the DM thermal production are only compatible for resonant DM
annihilations, i.e. for $M_{med}\simeq2 m_{DM}$. In this case, XENONnT/LZ would
be able to simultaneously measure $m_{DM}$ and $M_{med}$. We also discuss the
dependence of our results on $m_{DM}$, $\mu_S$ and the DM spin, and provide
analytic expressions for annihilation cross-sections and mediator decay widths
for all models considered in this study.
|
[{'version': 'v1', 'created': 'Thu, 21 Dec 2017 14:32:44 GMT'}
{'version': 'v2', 'created': 'Mon, 28 May 2018 12:37:43 GMT'}]
|
2018-05-29
|
[array(['Catena', 'Riccardo', ''], dtype=object)
array(['Conrad', 'Jan', ''], dtype=object)
array(['Krauss', 'Martin B.', ''], dtype=object)]
|
18,807 |
math/9911176
|
Tchavdar D. Palev
|
T.D. Palev and J. Van der Jeugt
|
Fock representations of the Lie superalgebra q(n+1)
|
24 pages, LaTeX file, small corrections done; to appear in J. Phys.
A: Math. Gen
| null |
10.1088/0305-4470/33/13/306
| null |
math.QA math.RT
| null |
For the Lie superalgebra $q(n+1)$ a description is given in terms of creation
and annihilation operators, in such a way that the defining relations of
$q(n+1)$ are determined by quadratic and triple supercommutation relations of
these operators. Fock space representations $V_p$ of $q(n+1)$ are defined by
means of these creation and annihilation operators. These new representations
are introduced as quotient modules of some induced module of $q(n+1)$. The
representations $V_p$ are not graded, but they possess a number of properties
that are of importance for physical applications. For $p$ a positive integer,
these representations $V_p$ are finite-dimensional, with a unique highest
weight (of multiplicity 1). The Hermitian form that is consistent with the
natural adjoint operation on $q(n+1)$ is shown to be positive definite on
$V_p$. For $q(2)$ these representations are ``dispin''. For the general case of
$q(n+1)$, many structural properties of $V_p$ are derived.
|
[{'version': 'v1', 'created': 'Tue, 23 Nov 1999 09:32:55 GMT'}
{'version': 'v2', 'created': 'Tue, 22 Feb 2000 09:10:44 GMT'}]
|
2009-10-31
|
[array(['Palev', 'T. D.', ''], dtype=object)
array(['Van der Jeugt', 'J.', ''], dtype=object)]
|
18,808 |
1207.2545
|
Zhen-hua Zhao
|
Zhen-hua Zhao
|
Understanding for flavor physics in the lepton sector
|
version to appear in Phys. Rev. D
|
Phys. Rev. D 86, 096010 (2012)
|
10.1103/PhysRevD.86.096010
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we give a model for understanding flavor physics in the lepton
sector--mass hierarchy among different generations and neutrino mixing pattern.
The model is constructed in the framework of supersymmetry, with a family
symmetry $S4*U(1)$. There are two right-handed neutrinos introduced for seesaw
mechanism, while some standard model(SM) gauge group singlet fields are
included which transforms non-trivially under family symmetry. In the model,
each order of contributions are suppressed by $\delta \sim 0.1$ compared to the
previous one. In order to reproduce the mass hierarchy, $m_\tau$ and
$\sqrt{\Delta m_{atm}^2}$, $m_\mu$ and $\sqrt{\Delta m_{sol}^2}$ are obtained
at leading-order(LO) and next-to-leading-order(NLO) respectively, while
electron can only get its mass through
next-to-next-to-next-to-leading-order(NNNLO) contributions. For neutrino mixing
angels, $\theta_{12}, \theta_{23}, \theta_{13}$ are $45^\circ, 45^\circ, 0$
i.e. Bi-maximal mixing pattern as first approximation, while higher order
contributions can make them consistent with experimental results. As
corrections for $\theta_{12}$ and $\theta_{13}$ originate from the same
contribution, there is a relation predicted for them
$\sin{\theta_{13}}=\displaystyle
\frac{1-\tan{\theta_{12}}}{1+\tan{\theta_{12}}}$. Besides, deviation from
$\displaystyle \frac{\pi}{4}$ for $\theta_{23}$ should have been as large as
deviation from 0 for $\theta_{13}$ if it were not the former is suppressed by a
factor 4 compared to the latter.
|
[{'version': 'v1', 'created': 'Wed, 11 Jul 2012 06:12:36 GMT'}
{'version': 'v2', 'created': 'Sat, 28 Jul 2012 08:35:35 GMT'}
{'version': 'v3', 'created': 'Sun, 11 Nov 2012 03:58:08 GMT'}]
|
2012-12-03
|
[array(['Zhao', 'Zhen-hua', ''], dtype=object)]
|
18,809 |
2104.14783
|
Ruibing Hou
|
Ruibing Hou, Hong Chang, Bingpeng Ma, Rui Huang and Shiguang Shan
|
BiCnet-TKS: Learning Efficient Spatial-Temporal Representation for Video
Person Re-Identification
|
Accepted by IEEE Conference on Computer Vision and Pattern
Recognition (CVPR 2021) 2021
| null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, we present an efficient spatial-temporal representation for
video person re-identification (reID). Firstly, we propose a Bilateral
Complementary Network (BiCnet) for spatial complementarity modeling.
Specifically, BiCnet contains two branches. Detail Branch processes frames at
original resolution to preserve the detailed visual clues, and Context Branch
with a down-sampling strategy is employed to capture long-range contexts. On
each branch, BiCnet appends multiple parallel and diverse attention modules to
discover divergent body parts for consecutive frames, so as to obtain an
integral characteristic of target identity. Furthermore, a Temporal Kernel
Selection (TKS) block is designed to capture short-term as well as long-term
temporal relations by an adaptive mode. TKS can be inserted into BiCnet at any
depth to construct BiCnetTKS for spatial-temporal modeling. Experimental
results on multiple benchmarks show that BiCnet-TKS outperforms
state-of-the-arts with about 50% less computations. The source code is
available at https://github.com/ blue-blue272/BiCnet-TKS.
|
[{'version': 'v1', 'created': 'Fri, 30 Apr 2021 06:44:34 GMT'}]
|
2021-05-03
|
[array(['Hou', 'Ruibing', ''], dtype=object)
array(['Chang', 'Hong', ''], dtype=object)
array(['Ma', 'Bingpeng', ''], dtype=object)
array(['Huang', 'Rui', ''], dtype=object)
array(['Shan', 'Shiguang', ''], dtype=object)]
|
18,810 |
1509.00220
|
Susanth C
|
Susanth C., Sunny Joseph Kalayathankal, N. K. Sudev, K. P. Chithra and
Johan Kok
|
Curling Numbers of Certain Graph Powers
|
8 Pages, Submitted
| null | null | null |
math.GM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Given a finite nonempty sequence $S$ of integers, write it as $XY^k$, where
$Y^k$ is a power of greatest exponent that is a suffix of $S$: this $k$ is the
curling number of $S$. The concept of curling number of sequences has already
been extended to the degree sequences of graphs to define the curling number of
a graph. In this paper we study the curling number of graph powers, graph
products and certain other graph operations.
|
[{'version': 'v1', 'created': 'Tue, 1 Sep 2015 10:52:56 GMT'}
{'version': 'v2', 'created': 'Tue, 17 Nov 2015 16:30:53 GMT'}]
|
2015-11-18
|
[array(['C.', 'Susanth', ''], dtype=object)
array(['Kalayathankal', 'Sunny Joseph', ''], dtype=object)
array(['Sudev', 'N. K.', ''], dtype=object)
array(['Chithra', 'K. P.', ''], dtype=object)
array(['Kok', 'Johan', ''], dtype=object)]
|
18,811 |
1005.3452
|
Laurent Charles
|
Laurent Charles
|
Asymptotic properties of the quantum representations of the mapping
class group
|
34 pages, minor corrections and references modified
| null | null | null |
math.GT math-ph math.MP math.SG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We establish various results on the large level limit of projective quantum
representations of surface mapping class groups obtained by quantizing moduli
spaces of flat SU(n)-bundle. Working with the metaplectic correction, we proved
that these projective representations lift to asymptotic representations. We
show that the operators in these representations are Fourier integral operators
and determine explicitly their canonical relations and symbols. We deduce from
these facts the Egorov property and the asymptotic unitarity, two results
already proved by J.E. Andersen. Furthermore we show under a transversality
assumption that the characters of these representations have an asymptotic
expansion. The leading order term of this expansion agrees with the formula
derived heuristically by E. Witten in "Quantum field theory and the Jones
polynomial".
|
[{'version': 'v1', 'created': 'Wed, 19 May 2010 14:21:38 GMT'}
{'version': 'v2', 'created': 'Fri, 27 Aug 2010 11:14:47 GMT'}]
|
2010-08-30
|
[array(['Charles', 'Laurent', ''], dtype=object)]
|
18,812 |
2011.06466
|
Grigory Volovik
|
G.E. Volovik
|
Combined Lorentz symmetry: lessons from superfluid 3He
|
8 pages, no figures, accepted in J. Low Temp. Phys
| null |
10.1007/s10909-021-02630-7
| null |
gr-qc cond-mat.other hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the possibility of the scenario in which the $P$, $T$ and Lorentz
symmetry of the relativistic quantum vacuum are all the combined symmetries.
These symmetries emerge as a result of the symmetry breaking of the more
fundamental $P$, $T$ and Lorentz symmetries of the original vacuum, which is
invariant under separate groups of the coordinate transformations and spin
rotations. The condensed matter vacua (ground states) suggest two possible
scenarios of the origin of the combined Lorentz symmetry, both are realized in
the superfluid phases of liquid $^3$He: the $^3$He-A scenario and the $^3$He-B
scenario. In these scenarios the gravitational tetrads are considered as the
order parameter of the symmetry breaking in the quantum vacuum. The $^3$He-B
scenarios applied to the Minkowski vacuum leads to the continuous degeneracy of
the Minkowski vacuum with respect to the $O(3,1)$ spin rotations. The symmetry
breaking leads to the corresponding topological objects, which appear due to
the nontrivial topology of the manifold of the degenerate Minkowski vacua, such
as torsion strings. The 4-fold degeneracy of the Minkowski vacuum with respect
to discrete $P$ and $T$ symmetries suggests that the Weyl fermions are
described by four different tetrad fields: the tetrad for the left-handed
fermions, the tetrad for the right-handed fermions, and the tetrads for their
antiparticles. This may lead to the gravity with several metric fields, so that
the parity violation may lead to the breaking of equivalence principle. Finally
we considered the application of the gravitational tetrads for the solution of
the cosmological constant problem.
|
[{'version': 'v1', 'created': 'Thu, 12 Nov 2020 16:17:40 GMT'}
{'version': 'v10', 'created': 'Wed, 4 Aug 2021 17:25:21 GMT'}
{'version': 'v11', 'created': 'Mon, 27 Sep 2021 15:52:07 GMT'}
{'version': 'v2', 'created': 'Mon, 7 Dec 2020 10:55:46 GMT'}
{'version': 'v3', 'created': 'Sat, 26 Dec 2020 13:42:43 GMT'}
{'version': 'v4', 'created': 'Wed, 30 Dec 2020 16:12:32 GMT'}
{'version': 'v5', 'created': 'Tue, 19 Jan 2021 16:53:07 GMT'}
{'version': 'v6', 'created': 'Sun, 31 Jan 2021 09:06:43 GMT'}
{'version': 'v7', 'created': 'Thu, 4 Mar 2021 08:57:37 GMT'}
{'version': 'v8', 'created': 'Mon, 8 Mar 2021 12:02:40 GMT'}
{'version': 'v9', 'created': 'Sat, 15 May 2021 14:54:24 GMT'}]
|
2021-11-17
|
[array(['Volovik', 'G. E.', ''], dtype=object)]
|
18,813 |
2307.00811
|
Dongwei Wang
|
Dongwei Wang, Zhi Han, Yanmei Wang, Xiai Chen, Baichen Liu and Yandong
Tang
|
Review helps learn better: Temporal Supervised Knowledge Distillation
|
Under review in NIPS 2023
| null | null | null |
cs.CV cs.AI
|
http://creativecommons.org/licenses/by/4.0/
|
Reviewing plays an important role when learning knowledge. The knowledge
acquisition at a certain time point may be strongly inspired with the help of
previous experience. Thus the knowledge growing procedure should show strong
relationship along the temporal dimension. In our research, we find that during
the network training, the evolution of feature map follows temporal sequence
property. A proper temporal supervision may further improve the network
training performance. Inspired by this observation, we design a novel knowledge
distillation method. Specifically, we extract the spatiotemporal features in
the different training phases of student by convolutional Long Short-term
memory network (Conv-LSTM). Then, we train the student net through a dynamic
target, rather than static teacher network features. This process realizes the
refinement of old knowledge in student network, and utilizes them to assist
current learning. Extensive experiments verify the effectiveness and advantages
of our method over existing knowledge distillation methods, including various
network architectures, different tasks (image classification and object
detection) .
|
[{'version': 'v1', 'created': 'Mon, 3 Jul 2023 07:51:08 GMT'}]
|
2023-07-04
|
[array(['Wang', 'Dongwei', ''], dtype=object)
array(['Han', 'Zhi', ''], dtype=object)
array(['Wang', 'Yanmei', ''], dtype=object)
array(['Chen', 'Xiai', ''], dtype=object)
array(['Liu', 'Baichen', ''], dtype=object)
array(['Tang', 'Yandong', ''], dtype=object)]
|
18,814 |
hep-th/0210190
|
Pierre Mathieu
|
P. Desrosiers, L. Lapointe and P. Mathieu
|
Supersymmetric Calogero-Moser-Sutherland models: superintegrability
structure and eigenfunctions
|
(Minor corrections in footnote 8). 15 pages. To appear in the
proceedings of the Workshop on superintegrability in classical and quantum
systems
| null | null | null |
hep-th math.QA nlin.SI
| null |
We first review the construction of the supersymmetric extension of the
(quantum) Calogero-Moser-Sutherland (CMS) models. We stress the remarkable fact
that this extension is completely captured by the insertion of a fermionic
exchange operator in the Hamiltonian: sCMS models ({\it s} for supersymmetric)
are nothing but special exchange-type CMS models. Under the appropriate
projection, the conserved charges can thus be formulated in terms of the
standard Dunkl operators. This is illustrated in the rational case, where the
explicit form of the 4N (N being the number of bosonic variables) conserved
charges is presented, together with their full algebra. The existence of 2N
commuting bosonic charges settles the question of the integrability of the
srCMS model. We then prove its superintegrability by displaying 2N-2 extra
independent charges commuting with the Hamiltonian. In the second part, we
consider the supersymmetric version of the trigonometric case (stCMS model) and
review the construction of its eigenfunctions, the Jack superpolynomials. This
leads to closed-form expressions, as determinants of determinants involving
supermonomial symmetric functions. Here we focus on the main ideas and the
generic aspects of the construction: those applicable to all models whether
supersymmetric or not. Finally, the possible Lie superalgebraic structure
underlying the stCMS model and its eigenfunctions is briefly considered.
|
[{'version': 'v1', 'created': 'Sun, 20 Oct 2002 20:42:12 GMT'}
{'version': 'v2', 'created': 'Wed, 7 May 2003 19:12:36 GMT'}]
|
2007-05-23
|
[array(['Desrosiers', 'P.', ''], dtype=object)
array(['Lapointe', 'L.', ''], dtype=object)
array(['Mathieu', 'P.', ''], dtype=object)]
|
18,815 |
1711.07176
|
Bea Schumann
|
Volker Genz, Gleb Koshevoy, Bea Schumann
|
Polyhedral parametrizations of canonical bases & cluster duality
| null | null | null | null |
math.RT math.AG math.CO math.QA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We establish the relation of the potential function constructed by
Gross-Hacking-Keel-Kontsevich's and Berenstein-Kazhdan's decoration function on
the open double Bruhat cell in the base affine space $G/\mathcal{N}$ of a
simple, simply connected, simply laced algebraic group $G$. As a byproduct we
derive explicit identifications of polyhedral parametrization of canonical
bases of the ring of regular functions on $G/\mathcal{N}$ arising from the
tropicalizations of the potential and decoration function with the classical
string and Lusztig parametrizations.
|
[{'version': 'v1', 'created': 'Mon, 20 Nov 2017 07:35:54 GMT'}]
|
2017-11-21
|
[array(['Genz', 'Volker', ''], dtype=object)
array(['Koshevoy', 'Gleb', ''], dtype=object)
array(['Schumann', 'Bea', ''], dtype=object)]
|
18,816 |
2007.01241
|
Andrzej Sitarz
|
Arkadiusz Bochniak, Andrzej Sitarz and Pawe{\l} Zalecki
|
Riemannian Geometry of a Discretized Circle and Torus
| null |
SIGMA 16 (2020), 143, 28 pages
|
10.3842/SIGMA.2020.143
| null |
math-ph gr-qc hep-th math.MP math.QA
|
http://creativecommons.org/licenses/by-sa/4.0/
|
We extend the results of Riemannian geometry over finite groups and provide a
full classification of all linear connections for the minimal noncommutative
differential calculus over a finite cyclic group. We solve the torsion-free and
metric compatibility condition in general and show that there are several
classes of solutions, out of which only special ones are compatible with a
metric that gives a Hilbert $C^\ast$-module structure on the space of the
one-forms. We compute curvature and scalar curvature for these metrics and find
their continuous limits.
|
[{'version': 'v1', 'created': 'Thu, 2 Jul 2020 16:50:04 GMT'}
{'version': 'v2', 'created': 'Wed, 23 Dec 2020 08:35:55 GMT'}]
|
2020-12-24
|
[array(['Bochniak', 'Arkadiusz', ''], dtype=object)
array(['Sitarz', 'Andrzej', ''], dtype=object)
array(['Zalecki', 'Paweł', ''], dtype=object)]
|
18,817 |
2110.10980
|
Jakob Mokander
|
Jakob Mokander, Jessica Morley, Mariarosaria Taddeo and Luciano
Floridi
|
Ethics-Based Auditing of Automated Decision-Making Systems: Nature,
Scope, and Limitations
|
Artificial Intelligence, Auditing, Automated Decision-Making, Ethics,
Governance
|
Mokander, J., Morley, J., Taddeo, M. et al. Ethics-Based Auditing
of Automated Decision-Making Systems: Nature, Scope, and Limitations. Sci Eng
Ethics 27, 44 (2021)
|
10.1007/s11948-021-00319-4
| null |
cs.CY cs.SE
|
http://creativecommons.org/licenses/by/4.0/
|
Important decisions that impact human lives, livelihoods, and the natural
environment are increasingly being automated. Delegating tasks to so-called
automated decision-making systems (ADMS) can improve efficiency and enable new
solutions. However, these benefits are coupled with ethical challenges. For
example, ADMS may produce discriminatory outcomes, violate individual privacy,
and undermine human self-determination. New governance mechanisms are thus
needed that help organisations design and deploy ADMS in ways that are ethical,
while enabling society to reap the full economic and social benefits of
automation. In this article, we consider the feasibility and efficacy of
ethics-based auditing (EBA) as a governance mechanism that allows organisations
to validate claims made about their ADMS. Building on previous work, we define
EBA as a structured process whereby an entity's present or past behaviour is
assessed for consistency with relevant principles or norms. We then offer three
contributions to the existing literature. First, we provide a theoretical
explanation of how EBA can contribute to good governance by promoting
procedural regularity and transparency. Second, we propose seven criteria for
how to design and implement EBA procedures successfully. Third, we identify and
discuss the conceptual, technical, social, economic, organisational, and
institutional constraints associated with EBA. We conclude that EBA should be
considered an integral component of multifaced approaches to managing the
ethical risks posed by ADMS.
|
[{'version': 'v1', 'created': 'Thu, 21 Oct 2021 08:51:28 GMT'}]
|
2021-10-22
|
[array(['Mokander', 'Jakob', ''], dtype=object)
array(['Morley', 'Jessica', ''], dtype=object)
array(['Taddeo', 'Mariarosaria', ''], dtype=object)
array(['Floridi', 'Luciano', ''], dtype=object)]
|
18,818 |
2304.00761
|
Fang Zhao
|
Fang Zhao, Zekun Li, Shaoli Huang, Junwu Weng, Tianfei Zhou, Guo-Sen
Xie, Jue Wang, Ying Shan
|
Learning Anchor Transformations for 3D Garment Animation
|
Accepted to CVPR 2023. Project page:
https://semanticdh.github.io/AnchorDEF
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper proposes an anchor-based deformation model, namely AnchorDEF, to
predict 3D garment animation from a body motion sequence. It deforms a garment
mesh template by a mixture of rigid transformations with extra nonlinear
displacements. A set of anchors around the mesh surface is introduced to guide
the learning of rigid transformation matrices. Once the anchor transformations
are found, per-vertex nonlinear displacements of the garment template can be
regressed in a canonical space, which reduces the complexity of deformation
space learning. By explicitly constraining the transformed anchors to satisfy
the consistencies of position, normal and direction, the physical meaning of
learned anchor transformations in space is guaranteed for better
generalization. Furthermore, an adaptive anchor updating is proposed to
optimize the anchor position by being aware of local mesh topology for learning
representative anchor transformations. Qualitative and quantitative experiments
on different types of garments demonstrate that AnchorDEF achieves the
state-of-the-art performance on 3D garment deformation prediction in motion,
especially for loose-fitting garments.
|
[{'version': 'v1', 'created': 'Mon, 3 Apr 2023 07:27:38 GMT'}]
|
2023-04-04
|
[array(['Zhao', 'Fang', ''], dtype=object)
array(['Li', 'Zekun', ''], dtype=object)
array(['Huang', 'Shaoli', ''], dtype=object)
array(['Weng', 'Junwu', ''], dtype=object)
array(['Zhou', 'Tianfei', ''], dtype=object)
array(['Xie', 'Guo-Sen', ''], dtype=object)
array(['Wang', 'Jue', ''], dtype=object)
array(['Shan', 'Ying', ''], dtype=object)]
|
18,819 |
2006.07588
|
Ali Pourmiri
|
Catherine Greenhill, Bernard Mans, and Ali Pourmiri
|
Balanced Allocation on Hypergraphs
| null | null | null | null |
cs.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a variation of balls-into-bins which randomly allocates $m$ balls
into $n$ bins. Following Godfrey's model (SODA, 2008), we assume that each ball
$t$, $1\le t\le m$, comes with a hypergraph
$\mathcal{H}^{(t)}=\{B_1,B_2,\ldots,B_{s_t}\}$, and each edge
$B\in\mathcal{H}^{(t)}$ contains at least a logarithmic number of bins. Given
$d\ge 2$, our $d$-choice algorithm chooses an edge $B\in \mathcal{H}^{(t)}$,
uniformly at random, and then chooses a set $D$ of $d$ random bins from the
selected edge $B$. The ball is allocated to a least-loaded bin from $D$, with
ties are broken randomly. We prove that if the hypergraphs
$\mathcal{H}^{(1)},\ldots, \mathcal{H}^{(m)}$ satisfy a \emph{balancedness}
condition and have low \emph{pair visibility}, then after allocating
$m=\Theta(n)$ balls, the maximum number of balls at any bin, called the
\emph{maximum load}, is at most $\log_d\log n+O(1)$, with high probability. The
balancedness condition enforces that bins appear almost uniformly within the
hyperedges of $\mathcal{H}^{(t)}$, $1\le t\le m$, while the pair visibility
condition measures how frequently a pair of bins is chosen during the
allocation of balls. Moreover, we establish a lower bound for the maximum load
attained by the balanced allocation for a sequence of hypergraphs in terms of
pair visibility, showing the relevance of the visibility parameter to the
maximum load. In Godfrey's model, each ball is forced to probe all bins in a
randomly selected hyperedge and the ball is then allocated in a least-loaded
bin. Godfrey showed that if each $\mathcal{H}^{(t)}$, $1\le t\le m$, is
balanced and $m=O(n)$, then the maximum load is at most one, with high
probability. However, we apply the power of $d$ choices paradigm, and only
query the load information of $d$ random bins per ball, while achieving very
slow growth in the maximum load.
|
[{'version': 'v1', 'created': 'Sat, 13 Jun 2020 08:22:05 GMT'}
{'version': 'v2', 'created': 'Wed, 3 Nov 2021 06:32:23 GMT'}
{'version': 'v3', 'created': 'Sat, 3 Sep 2022 11:03:29 GMT'}]
|
2022-09-07
|
[array(['Greenhill', 'Catherine', ''], dtype=object)
array(['Mans', 'Bernard', ''], dtype=object)
array(['Pourmiri', 'Ali', ''], dtype=object)]
|
18,820 |
1806.08019
|
Weidong Zhou
|
Xiaochen Ge, Momchil Minkov, Shanhui Fan, Xiuling Li, Weidong Zhou
|
Laterally confined photonic crystal surface emitting laser based on
monolayer tungsten disulfide operating at room temperature
|
10 pages, 4 figures
| null | null | null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report a photonic crystal surface emitting laser using monolayer tungsten
disulfide as the gain medium. The cavity design utilizes a heterostructure in
the photonic crystal lattice to provide lateral confinement for a high quality
factor with a compact active region. Room temperature continuous wave lasing is
realized after integrating monolayer tungsten disulfide flakes onto the silicon
nitride photonic crystal on quartz substrate. Highly directional, near surface
normal emission has also been experimentally demonstrated.
|
[{'version': 'v1', 'created': 'Thu, 21 Jun 2018 00:09:53 GMT'}]
|
2018-06-22
|
[array(['Ge', 'Xiaochen', ''], dtype=object)
array(['Minkov', 'Momchil', ''], dtype=object)
array(['Fan', 'Shanhui', ''], dtype=object)
array(['Li', 'Xiuling', ''], dtype=object)
array(['Zhou', 'Weidong', ''], dtype=object)]
|
18,821 |
1604.06470
|
Pawel Jakubczyk
|
Pawel Jakubczyk and Andreas Eberlein
|
Thermodynamics of the two-dimensional XY model from functional
renormalization
|
8 pages, 4 figures
|
Phys. Rev. E 93, 062145 (2016)
|
10.1103/PhysRevE.93.062145
| null |
cond-mat.stat-mech cond-mat.quant-gas cond-mat.supr-con hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We solve the nonperturbative renormalization-group flow equations for the
two-dimensional XY model at the truncation level of the (complete) second-order
derivative expansion. We compute the thermodynamic properties in the
high-temperature phase and compare the non-universal features specific to the
XY model with results from Monte Carlo simulations. In particular, we study the
position and magnitude of the specific heat peak as a function of temperature.
The obtained results compare well with Monte Carlo simulations. We additionally
gauge the accuracy of simplified nonperturbative renormalization-group
treatments relying on $\phi^4$-type truncations. Our computation indicates that
such an approximation is insufficient in the high-$T$ phase and a correct
analysis of the specific heat profile requires account of an infinite number of
interaction vertices.
|
[{'version': 'v1', 'created': 'Thu, 21 Apr 2016 20:02:22 GMT'}]
|
2016-07-20
|
[array(['Jakubczyk', 'Pawel', ''], dtype=object)
array(['Eberlein', 'Andreas', ''], dtype=object)]
|
18,822 |
2212.06173
|
Bianca Neureiter
|
B. Neureiter, S. de Nicola, J. Thomas, R. Saglia, R. Bender, A.
Rantala
|
Accuracy and precision of triaxial orbit models I: SMBH mass, stellar
mass and dark-matter halo
| null | null |
10.1093/mnras/stac3652
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the accuracy and precision of triaxial dynamical orbit models
by fitting two dimensional mock observations of a realistic N-body merger
simulation resembling a massive early-type galaxy with a supermassive black
hole (SMBH). We show that we can reproduce the triaxial N-body merger remnant's
correct black hole mass, stellar mass-to-light ratio and total enclosed mass
(inside the half-light radius) for several different tested orientations with
an unprecedented accuracy of 5-10%. Our dynamical models use the entire
non-parametric line-of-sight velocity distribution (LOSVD) rather than
parametric LOSVDs or velocity moments as constraints. Our results strongly
suggest that state-of-the-art integral-field projected kinematic data contain
only minor degeneracies with respect to the mass and anisotropy recovery.
Moroever, this also demonstrates the strength of the Schwarzschild method in
general. We achieve the proven high recovery accuracy and precision with our
newly developed modeling machinery by combining several advancements: (i) our
new semi-parametric deprojection code probes degeneracies and allows to
constrain the viewing angles of a triaxial galaxy; (ii) our new orbit modeling
code SMART uses a 5-dim orbital starting space to representatively sample in
particular near-Keplerian orbits in galaxy centers; (iii) we use a generalised
information criterion AICp to optimise the smoothing and to compare different
mass models to avoid biases that occur in $\chi^2$-based models with varying
model flexibilities.
|
[{'version': 'v1', 'created': 'Mon, 12 Dec 2022 19:00:05 GMT'}]
|
2022-12-21
|
[array(['Neureiter', 'B.', ''], dtype=object)
array(['de Nicola', 'S.', ''], dtype=object)
array(['Thomas', 'J.', ''], dtype=object)
array(['Saglia', 'R.', ''], dtype=object)
array(['Bender', 'R.', ''], dtype=object)
array(['Rantala', 'A.', ''], dtype=object)]
|
18,823 |
physics/0701123
|
Shimshon Kallush
|
S. Kallush, R. Kosloff and F. Masnou-Seeuws
|
Grid methods for cold molecules : determination of photoassociation
lineshapes and rate constants
|
Submitted to PRA
| null | null | null |
physics.chem-ph physics.atom-ph
| null |
A description of photoassociation by CW laser is formulated in the framework
of grid methods. The Hamiltonian describing one or several bound states coupled
to a multiple of continuum manifolds via a radiative field is written in the
energy representation and diagonalized. The generality of the treatment allows
to compute accurately and efficiently physical properties such as non-linear
high-intensity energy shifts, line shapes, and photoassociation rates both for
isolated and non-isolated resonances. Application is given to sodium
photoassociation in the experimental conditions of Mc Kenzie {\it et al} [Phys.
Rev. Lett. {\bf 88}, 090403 (2002)]. Inverted region for the dependency of the
rate vs. the intensity and non-symmetric lineshapes were predicted to occur
above the saturation limit. Comparison with the model of Bohn and Julienne
[Phys. Rev. A {\bf 60}, 414 (1999)] is discussed.
|
[{'version': 'v1', 'created': 'Wed, 10 Jan 2007 14:39:51 GMT'}]
|
2007-05-23
|
[array(['Kallush', 'S.', ''], dtype=object)
array(['Kosloff', 'R.', ''], dtype=object)
array(['Masnou-Seeuws', 'F.', ''], dtype=object)]
|
18,824 |
1402.7107
|
Youhan Fang
|
Youhan Fang, Jesus-Maria Sanz-Serna and Robert D. Skeel
|
Compressible Generalized Hybrid Monte Carlo
|
27 pages, 2 figures
| null |
10.1063/1.4874000
| null |
physics.comp-ph stat.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
One of the most demanding calculations is to generate random samples from a
specified probability distribution (usually with an unknown normalizing
prefactor) in a high-dimensional configuration space. One often has to resort
to using a Markov chain Monte Carlo method, which converges only in the limit
to the prescribed distribution. Such methods typically inch through
configuration space step by step, with acceptance of a step based on a
Metropolis(-Hastings) criterion. An acceptance rate of 100% is possible in
principle by embedding configuration space in a higher-dimensional phase space
and using ordinary differential equations. In practice, numerical integrators
must be used, lowering the acceptance rate. This is the essence of hybrid Monte
Carlo methods. Presented is a general framework for constructing such methods
under relaxed conditions: the only geometric property needed is (weakened)
reversibility; volume preservation is not needed. The possibilities are
illustrated by deriving a couple of explicit hybrid Monte Carlo methods, one
based on barrier-lowering variable-metric dynamics and another based on
isokinetic dynamics.
|
[{'version': 'v1', 'created': 'Fri, 28 Feb 2014 00:01:07 GMT'}]
|
2015-06-18
|
[array(['Fang', 'Youhan', ''], dtype=object)
array(['Sanz-Serna', 'Jesus-Maria', ''], dtype=object)
array(['Skeel', 'Robert D.', ''], dtype=object)]
|
18,825 |
nucl-th/9907014
|
Yoshiaki Koma Nuclear Science Group 2 Research
|
H. Toki (RCNP) and L.A. Wu (RCNP)
|
Reply to the comment on $\Delta$I=4 bifurcation in ground rotational
bands of even-even nuclei and the interacting boson model
|
Latex, 2 pages, no figure
| null | null | null |
nucl-th
| null |
This is the reply to the comment of Kuyucak and Stuchbery on our paper
published in Phys. Rev. Lett. 79 (1997) 2006.
|
[{'version': 'v1', 'created': 'Mon, 5 Jul 1999 13:50:25 GMT'}]
|
2007-05-23
|
[array(['Toki', 'H.', '', 'RCNP'], dtype=object)
array(['Wu', 'L. A.', '', 'RCNP'], dtype=object)]
|
18,826 |
2102.06457
|
Edoardo Ballico
|
Edoardo Ballico
|
Extending infinitely many times arithmetically Cohen-Macaulay and
Gorenstein subvarieties of projective spaces
| null | null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give examples of infinitely extendable (not as cones) arithmetically
Cohen-Macaulay and arithmetically Gorenstein subvarieties of projective spaces
and which are not complete intersections. The proof uses the computation of the
dimension of the Hilbert scheme of codimension $2$ subschemes of projective
spaces due to G. Ellingsrud and of arithmetically Gorenstein codimension $3$
subschemes due to J. O. Kleppe and R.-M. Mir\'{o}-Roig.
|
[{'version': 'v1', 'created': 'Fri, 12 Feb 2021 11:39:29 GMT'}]
|
2021-02-15
|
[array(['Ballico', 'Edoardo', ''], dtype=object)]
|
18,827 |
1503.04921
|
Bonhong Koo
|
Changmin Lee, Bonhong Koo, Na-Rae Kim, Birkan Yilmaz, Nariman Farsard,
Andrew Eckford, and Chan-Byoung Chae
|
Molecular MIMO Communication Link
|
2 pages, 3 figures, accepted to present on 2015 INFOCOM conference
| null | null | null |
cs.ET
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this demonstration, we will present the world's first molecular
multiple-input multiple-output (MIMO) communication link to deliver two data
streams in a spatial domain. We show that chemical signals such as
concentration gradients could be used in MIMO fashion to transfer sequential
data. Until now it was unclear whether MIMO techniques, which are used
extensively in modern radio communication, could be applied to molecular
communication. In the demonstration, using our devised MIMO apparatus and
carefully designed detection algorithm, we will show that we can achieve about
1.7 times higher data rate than single input single output (SISO) molecular
communication systems.
|
[{'version': 'v1', 'created': 'Tue, 17 Mar 2015 05:01:25 GMT'}
{'version': 'v2', 'created': 'Thu, 19 Mar 2015 05:49:47 GMT'}]
|
2015-03-20
|
[array(['Lee', 'Changmin', ''], dtype=object)
array(['Koo', 'Bonhong', ''], dtype=object)
array(['Kim', 'Na-Rae', ''], dtype=object)
array(['Yilmaz', 'Birkan', ''], dtype=object)
array(['Farsard', 'Nariman', ''], dtype=object)
array(['Eckford', 'Andrew', ''], dtype=object)
array(['Chae', 'Chan-Byoung', ''], dtype=object)]
|
18,828 |
1607.05026
|
Shu Chen
|
Yucheng Wang, Gao Xianlong, Shu Chen
|
Almost mobility edges and existence of critical regions in
one-dimensional quasiperiodic lattices
|
8 pages, 11 figures
|
Eur. Phys. J. B 90, 215 (2017)
|
10.1140/epjb/e2017-80232-3
| null |
cond-mat.dis-nn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a one-dimensional quasiperiodic system described by the
Aubry-Andr\'e model in the small wave vector limit and demonstrate the
existence of almost mobility edges and critical regions in the system. It is
well known that the eigenstates of the Aubry-Andr\'e model are either extended
or localized depending on the strength of incommensurate potential $V$ being
less or bigger than a critical value $V_c$, and thus no mobility edge exists.
However, it was shown in a recent work that this conclusion does not hold true
when the wave vector $\alpha$ of the incommensurate potential is small, and for
the system with $V<V_c$, there exist almost mobility edges at the energy
$E_{c_{\pm}}$, which separate the robustly delocalized states from "almost
localized" states. We find that, besides $E_{c_{\pm}}$, there exist
additionally another energy edges $E_{c'_{\pm}}$, at which abrupt change of
inverse participation ratio occurs. By using the inverse participation ratio
and carrying out multifractal analyses, we identify the existence of critical
regions among $|E_{c_{\pm}}| \leq |E| \leq |E_{c'_{\pm}}|$ with the almost
mobility edges $E_{c_{\pm}}$ and $E_{c'_{\pm}}$ separating the critical region
from the extended and localized regions, respectively. We also study the system
with $V>V_c$, for which all eigenstates are localized states, but can be
divided into extended, critical and localized states in their dual space by
utilizing the self-duality property of the Aubry-Andr\'e model.
|
[{'version': 'v1', 'created': 'Mon, 18 Jul 2016 11:41:45 GMT'}]
|
2018-01-03
|
[array(['Wang', 'Yucheng', ''], dtype=object)
array(['Xianlong', 'Gao', ''], dtype=object)
array(['Chen', 'Shu', ''], dtype=object)]
|
18,829 |
1910.11657
|
Bertrand Busson
|
Benedetto Bozzini, Bertrand Busson (LCPO), Audrey Gayral, Christophe
Humbert (LCPO), Claudio Mele, Catherine Six, Abderrahmane Tadjeddine
|
In Situ Electrochemical SFG/DFG Study of CN-- and Nitrile Adsorption at
Au from 1-Butyl-1-methyl-pyrrolidinium Bis(trifluoromethylsulfonyl) Amide
Ionic Liquid ([BMP][TFSA]) Containing
4-{2-[1-(2-Cyanoethyl)-1,2,3,4-tetrahydroquinolin-6-yl]diazenyl} Benzonitrile
(CTDB) and K[Au(CN)$_2$]
| null |
Molecules, MDPI, 2012, 17 (7), pp.7722-7736
|
10.3390/molecules17077722
| null |
physics.chem-ph physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we report an in situ electrochemical Sum-/Difference Frequency
Generation (SFG/DFG) spectroscopy investigation of the adsorption of nitrile
and CN -- from the ionic liquid 1-butyl-1-methyl-pyrrolidinium
bis(trifluoromethylsulfonyl) amide ([BMP][TFSA]) containing
4-{2-[1-(2-cyanoethyl)-1,2,3,4-tetrahydroquinolin-6-yl]-diazenyl}benzonitrile
(CTDB) at Au electrodes in the absence and in the presence of the
Au-electrodeposition process from K[Au(CN)$_2$ ]. The adsorption of nitrile and
its coadsorption with CN -- resulting either from the cathodic decomposition of
the dye or from ligand release from the Au(I) cyanocomplex yield
potential-dependent single or double SFG bands in the range 2,125-2,140
cm$^{-1}$, exhibiting Stark tuning values of ca. 3 and 1 cm$^{-1}$ V$^{-1}$ in
the absence and presence of electrodeposition, respectively. The low Stark
tuning found during electrodeposition correlates with the cathodic inhibiting
effect of CTDB, giving rise to its levelling properties. The essential
insensitivity of the other DFG parameters to the electrodeposition process is
due to the growth of smooth Au.
|
[{'version': 'v1', 'created': 'Mon, 29 Apr 2019 08:34:48 GMT'}]
|
2019-10-28
|
[array(['Bozzini', 'Benedetto', '', 'LCPO'], dtype=object)
array(['Busson', 'Bertrand', '', 'LCPO'], dtype=object)
array(['Gayral', 'Audrey', '', 'LCPO'], dtype=object)
array(['Humbert', 'Christophe', '', 'LCPO'], dtype=object)
array(['Mele', 'Claudio', ''], dtype=object)
array(['Six', 'Catherine', ''], dtype=object)
array(['Tadjeddine', 'Abderrahmane', ''], dtype=object)]
|
18,830 |
1905.06561
|
Crucean Cosmin
|
Mihaela-Andreea B\u{a}loi, Diana Popescu and Cosmin Crucean
|
Total probability and number of particles for fermion production in
external electric and magnetic fields in de Sitter universe
|
31 pages, 20 figures
| null |
10.1016/j.nuclphysb.2020.115032
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we present a method for computing the total probability
corresponding to the processes of fermion pair production in dipole magnetic
field and external Coulomb field in a de Sitter geometry. For that we rewrite
the functions that define the amplitudes in terms of oscillatory functions and
we use the Taylor expansion of these functions for arriving at the final form
of the momenta integrals. The total probability is analysed in terms of the
ratio between the mass of the fermion and expansion parameter and we recover
the Minkowski limit when the expansion parameter is vanishing. Finally it is
proven that from our results we can compute the number of fermions in terms of
expansion parameter.
|
[{'version': 'v1', 'created': 'Thu, 16 May 2019 07:09:42 GMT'}
{'version': 'v2', 'created': 'Mon, 22 Jul 2019 12:35:02 GMT'}]
|
2020-06-24
|
[array(['Băloi', 'Mihaela-Andreea', ''], dtype=object)
array(['Popescu', 'Diana', ''], dtype=object)
array(['Crucean', 'Cosmin', ''], dtype=object)]
|
18,831 |
1801.08125
|
R\'eamonn \'O Buachalla
|
R\'eamonn \'O Buachalla, Jan Stovicek, Adam-Christiaan van Roosmalen
|
A Kodaira Vanishing Theorem for Noncommutative Kahler Structures
|
54 pages
| null | null | null |
math.QA math.KT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using the framework of noncommutative Kahler structures, we generalise to the
noncommutative setting the celebrated vanishing theorem of Kodaira for positive
line bundles. The result is established under the assumption that the
associated Dirac-Dolbeault operator of the line bundle is diagonalisable, an
assumption that is shown to always hold in the quantum homogeneous space case.
The general theory is then applied to the covariant Kahler structure of the
Heckenberger-Kolb calculus of the quantum Grassmannians allowing us to prove a
direct q-deformation of the classical Grassmannian Bott-Borel-Weil theorem for
positive line bundles.
|
[{'version': 'v1', 'created': 'Wed, 24 Jan 2018 18:52:36 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Jan 2018 12:41:24 GMT'}]
|
2018-01-26
|
[array(['Buachalla', 'Réamonn Ó', ''], dtype=object)
array(['Stovicek', 'Jan', ''], dtype=object)
array(['van Roosmalen', 'Adam-Christiaan', ''], dtype=object)]
|
18,832 |
1607.04387
|
James Freitag
|
James Freitag
|
Disintegrated order one differential equations and algebraic general
solutions
|
Appendix joint with Joel Nagloo and Ngoc Thieu Vo. There is an error
in the main theorem of the paper
| null | null | null |
math.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We generalize results of Rosenlicht to give a necessary and sufficient
condition for when order one differential equations of the form $D(x) = f(x)$
where $f$ is a rational function is orthogonal to the constants. Following the
main results of the paper, we also explain the connection between algebraic
general solutions and weak orthogonality to the constants; a portion of this
discussion is given in the appendix, written jointly with Joel Nagloo and Ngoc
Thieu Vo.
|
[{'version': 'v1', 'created': 'Fri, 15 Jul 2016 06:22:04 GMT'}
{'version': 'v2', 'created': 'Fri, 6 Oct 2017 14:16:10 GMT'}]
|
2017-10-09
|
[array(['Freitag', 'James', ''], dtype=object)]
|
18,833 |
1103.4884
|
Joon Yop Lee
|
Hyun Kwang Kim, Denis S. Krotov, and Joon Yop Lee
|
Poly-Bernoulli numbers and lonesum matrices
|
27 pages
|
Linear Algebra Appl. 438(7), 3107-3123 (2013)
|
10.1016/j.laa.2012.11.027
| null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A lonesum matrix is a matrix that can be uniquely reconstructed from its row
and column sums. Kaneko defined the poly-Bernoulli numbers $B_m^{(n)}$ by a
generating function, and Brewbaker computed the number of binary lonesum
$m\times n$-matrices and showed that this number coincides with the
poly-Bernoulli number $B_m^{(-n)}$. We compute the number of $q$-ary lonesum
$m\times n$-matrices, and then provide generalized Kaneko's formulas by using
the generating function for the number of $q$-ary lonesum $m\times n$-matrices.
In addition, we define two types of $q$-ary lonesum matrices that are composed
of strong and weak lonesum matrices, and suggest further researches on lonesum
matrices. \
|
[{'version': 'v1', 'created': 'Fri, 25 Mar 2011 00:03:56 GMT'}]
|
2017-01-20
|
[array(['Kim', 'Hyun Kwang', ''], dtype=object)
array(['Krotov', 'Denis S.', ''], dtype=object)
array(['Lee', 'Joon Yop', ''], dtype=object)]
|
18,834 |
2106.08694
|
Marco Baroni
|
Marco Baroni
|
On the proper role of linguistically-oriented deep net analysis in
linguistic theorizing
|
To appear in collective volume on Algebraic Systems and the
Representation of Linguistic Knowledge, editor: Shalom Lappin, Taylor &
Francis
| null | null | null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A lively research field has recently emerged that uses experimental methods
to probe the linguistic behavior of modern deep networks. While work in this
tradition often reports intriguing results about the grammatical skills of deep
nets, it is not clear what their implications for linguistic theorizing should
be. As a consequence, linguistically-oriented deep net analysis has had very
little impact on linguistics at large. In this chapter, I suggest that deep
networks should be treated as theories making explicit predictions about the
acceptability of linguistic utterances. I argue that, if we overcome some
obstacles standing in the way of seriously pursuing this idea, we will gain a
powerful new theoretical tool, complementary to mainstream algebraic
approaches.
|
[{'version': 'v1', 'created': 'Wed, 16 Jun 2021 10:57:24 GMT'}
{'version': 'v2', 'created': 'Thu, 24 Mar 2022 16:31:21 GMT'}]
|
2022-03-25
|
[array(['Baroni', 'Marco', ''], dtype=object)]
|
18,835 |
2105.04757
|
Mar\'ia Guadalupe Gramajo
|
Mar\'ia Guadalupe Gramajo, Luciana Ballejos and Mariel Ale
|
Recurrent Neural Networks to automate Quality assessment of Software
Requirements
|
19 pages, 7 figures
| null | null | null |
cs.SE
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Many problems related to the quality of requirements arise during elicitation
and specification activities since they are written in natural language. The
flexibility and inherent nature of language make requirements prone to
inconsistencies, redundancies, and ambiguities, and consequently, this
influences negatively the later phases of the software life cycle. To address
this problem, this paper proposes an innovative approach that combines natural
language processing techniques and recurrent neural networks to automatically
assess the quality of software requirements. Initially, the analysis of
singular, complete, correct, and appropriate quality properties defined in the
IEEE 29148: 2018 standard is addressed. The proposed neural models are trained
with a data set composed of 1000 software requirements. The proposal provides
an average accuracy of 75%. These promising results were a motivation to
explore its application in the evaluation of other quality properties
|
[{'version': 'v1', 'created': 'Tue, 11 May 2021 02:40:33 GMT'}
{'version': 'v2', 'created': 'Thu, 13 May 2021 14:09:56 GMT'}]
|
2021-05-14
|
[array(['Gramajo', 'María Guadalupe', ''], dtype=object)
array(['Ballejos', 'Luciana', ''], dtype=object)
array(['Ale', 'Mariel', ''], dtype=object)]
|
18,836 |
1210.3449
|
Jithamithra G R
|
G. R. Jithamithra and B. Sundar Rajan
|
Construction of Block Orthogonal STBCs and Reducing Their Sphere
Decoding Complexity
|
16 pages, 7 figures; Minor changes in lemmas and constructions
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Construction of high rate Space Time Block Codes (STBCs) with low decoding
complexity has been studied widely using techniques such as sphere decoding and
non Maximum-Likelihood (ML) decoders such as the QR decomposition decoder with
M paths (QRDM decoder). Recently Ren et al., presented a new class of STBCs
known as the block orthogonal STBCs (BOSTBCs), which could be exploited by the
QRDM decoders to achieve significant decoding complexity reduction without
performance loss. The block orthogonal property of the codes constructed was
however only shown via simulations. In this paper, we give analytical proofs
for the block orthogonal structure of various existing codes in literature
including the codes constructed in the paper by Ren et al. We show that codes
formed as the sum of Clifford Unitary Weight Designs (CUWDs) or Coordinate
Interleaved Orthogonal Designs (CIODs) exhibit block orthogonal structure. We
also provide new construction of block orthogonal codes from Cyclic Division
Algebras (CDAs) and Crossed-Product Algebras (CPAs). In addition, we show how
the block orthogonal property of the STBCs can be exploited to reduce the
decoding complexity of a sphere decoder using a depth first search approach.
Simulation results of the decoding complexity show a 30% reduction in the
number of floating point operations (FLOPS) of BOSTBCs as compared to STBCs
without the block orthogonal structure.
|
[{'version': 'v1', 'created': 'Fri, 12 Oct 2012 07:54:06 GMT'}
{'version': 'v2', 'created': 'Wed, 23 Jan 2013 07:45:53 GMT'}]
|
2013-01-24
|
[array(['Jithamithra', 'G. R.', ''], dtype=object)
array(['Rajan', 'B. Sundar', ''], dtype=object)]
|
18,837 |
1808.01492
|
Cecile Monthus
|
Cecile Monthus
|
Large Deviations for the density and the current in
Non-Equilibrium-Steady-States on disordered rings
|
v2=revised version (14 pages)
|
J. Stat. Mech. (2019) 023206
|
10.1088/1742-5468/ab02dc
| null |
cond-mat.dis-nn cond-mat.mes-hall cond-mat.stat-mech math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The so-called 'Level 2.5' general result for the large deviations of the
joint probability of the density and of the currents for Markov Jump processes
is applied to the case of $N$ independent particles on a ring with random
transition rates. We first focus on the Directed Trap model, where the
contractions needed to obtain the large deviations properties of the density
alone and of the current alone can be explicitly written in each disordered
sample, and where the deformed Markov operator needed to evaluate the
generating function of the current can be also explicitly analyzed via its
highest eigenvalue and the corresponding left and right eigenvectors. We then
turn to the non-directed model, where the tails for large currents $ j \to \pm
\infty$ of the rate function for the current alone can still be studied
explicitly, either via contraction or via the deformed Markov operator method.
We mention the differences with the large deviations properties of the
Fokker-Planck dynamics on disordered rings.
|
[{'version': 'v1', 'created': 'Sat, 4 Aug 2018 15:29:04 GMT'}
{'version': 'v2', 'created': 'Tue, 8 Jan 2019 14:26:46 GMT'}]
|
2021-05-12
|
[array(['Monthus', 'Cecile', ''], dtype=object)]
|
18,838 |
2201.09260
|
Marco Polini
|
Marco Polini, Francesco Giazotto, Kin Chung Fong, Ioan M. Pop, Carsten
Schuck, Tommaso Boccali, Giovanni Signorelli, Massimo D'Elia, Robert H.
Hadfield, Vittorio Giovannetti, Davide Rossini, Alessandro Tredicucci, Dmitri
K. Efetov, Frank H. L. Koppens, Pablo Jarillo-Herrero, Anna Grassellino,
Dario Pisignano
|
Materials and devices for fundamental quantum science and quantum
technologies
|
19 pages, 4 figures, 215 references, Perspective article on
solid-state quantum technologies
| null | null | null |
quant-ph cond-mat.mtrl-sci cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Technologies operating on the basis of quantum mechanical laws and resources
such as phase coherence and entanglement are expected to revolutionize our
future. Quantum technologies are often divided into four main pillars:
computing, simulation, communication, and sensing & metrology. Moreover, a
great deal of interest is currently also nucleating around energy-related
quantum technologies. In this Perspective, we focus on advanced superconducting
materials, van der Waals materials, and moir\'e quantum matter, summarizing
recent exciting developments and highlighting a wealth of potential
applications, ranging from high-energy experimental and theoretical physics to
quantum materials science and energy storage.
|
[{'version': 'v1', 'created': 'Sun, 23 Jan 2022 13:33:19 GMT'}]
|
2022-01-25
|
[array(['Polini', 'Marco', ''], dtype=object)
array(['Giazotto', 'Francesco', ''], dtype=object)
array(['Fong', 'Kin Chung', ''], dtype=object)
array(['Pop', 'Ioan M.', ''], dtype=object)
array(['Schuck', 'Carsten', ''], dtype=object)
array(['Boccali', 'Tommaso', ''], dtype=object)
array(['Signorelli', 'Giovanni', ''], dtype=object)
array(["D'Elia", 'Massimo', ''], dtype=object)
array(['Hadfield', 'Robert H.', ''], dtype=object)
array(['Giovannetti', 'Vittorio', ''], dtype=object)
array(['Rossini', 'Davide', ''], dtype=object)
array(['Tredicucci', 'Alessandro', ''], dtype=object)
array(['Efetov', 'Dmitri K.', ''], dtype=object)
array(['Koppens', 'Frank H. L.', ''], dtype=object)
array(['Jarillo-Herrero', 'Pablo', ''], dtype=object)
array(['Grassellino', 'Anna', ''], dtype=object)
array(['Pisignano', 'Dario', ''], dtype=object)]
|
18,839 |
1708.00473
|
Ignacio Araya
|
I. Araya, C. E. Jones, M. Cur\'e, J. Silaj, L. Cidale, A. Granada, A.
Jim\'enez
|
$\Omega$-Slow Solutions and Be Star Disks
|
20 pages and 14 figures. Accepted for publication in The
Astrophysical Journal
| null |
10.3847/1538-4357/aa835e
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
As the disk formation mechanism(s) in Be stars is(are) as yet unknown, we
investigate the role of rapidly rotating radiation-driven winds in this
process. We implemented the effects of high stellar rotation on m-CAK models
accounting for: the shape of the star, the oblate finite disk correction
factor, and gravity darkening. For a fast rotating star, we obtain a
two-component wind model, i.e., a fast, thin wind in the polar latitudes and an
$\Omega$-slow, dense wind in the equatorial regions. We use the equatorial mass
densities to explore H$\alpha$ emission profiles for the following scenarios:
1) a spherically symmetric star, 2) an oblate shaped star with constant
temperature, and 3) an oblate star with gravity darkening. One result of this
work is that we have developed a novel method for solving the gravity darkened,
oblated m-CAK equation of motion. Furthermore, from our modeling we find a) the
oblate finite disk correction factor, for the scenario considering the gravity
darkening, can vary by at least a factor of two between the equatorial and
polar directions, influencing the velocity profile and mass-loss rate
accordingly, b) the H$\alpha$ profiles predicted by our model are in agreement
with those predicted by a standard power-law model for following values of the
line-force parameters: $1.5 \lesssim k \lesssim 3$, $ \, \alpha \sim 0.6$ and
$\, \delta \gtrsim 0.1$, and c) the contribution of the fast wind component to
the H$\alpha$ emission line profile is negligible; therefore, the line profiles
arise mainly from the equatorial disks of Be stars.
|
[{'version': 'v1', 'created': 'Tue, 1 Aug 2017 18:48:37 GMT'}]
|
2017-08-30
|
[array(['Araya', 'I.', ''], dtype=object)
array(['Jones', 'C. E.', ''], dtype=object)
array(['Curé', 'M.', ''], dtype=object)
array(['Silaj', 'J.', ''], dtype=object)
array(['Cidale', 'L.', ''], dtype=object)
array(['Granada', 'A.', ''], dtype=object)
array(['Jiménez', 'A.', ''], dtype=object)]
|
18,840 |
astro-ph/9912493
|
Tapas K. Das
|
Tapas K. Das and Sandip K. Chakrabarti
|
Mass Outflow Rate From Accretion Discs around Compact Objects
|
30 Latex pages and 13 figures. crckapb.sty; Published in Class.
Quantum Grav. Vol. 16. No. 12. Pg. 3879
| null |
10.1088/0264-9381/16/12/308
| null |
astro-ph
| null |
We compute mass outflow rates from accretion disks around compact objects,
such as neutron stars and black holes. These computations are done using
combinations of exact transonic inflow and outflow solutions which may or may
not form standing shock waves. Assuming that the bulk of the outflow is from
the effective boundary layers of these objects, we find that the ratio of the
outflow rate and inflow rate varies anywhere from a few percent to even close
to a hundred percent (i.e., close to disk evacuation case) depending on the
initial parameters of the disk, the degree of compression of matter near the
centrifugal barrier, and the polytropic index of the flow. Our result, in
general, matches with the outflow rates obtained through a fully time-dependent
numerical simulation. In some region of the parameter space when the standing
shock does not form, our results indicate that the disk may be evacuated and
may produce quiescence states.
|
[{'version': 'v1', 'created': 'Thu, 23 Dec 1999 12:26:11 GMT'}]
|
2009-10-31
|
[array(['Das', 'Tapas K.', ''], dtype=object)
array(['Chakrabarti', 'Sandip K.', ''], dtype=object)]
|
18,841 |
0906.5122
|
Saverio Pascazio
|
Dariusz Chru\'sci\'nski, Andrzej Kossakowski, Saverio Pascazio
|
Long-time memory in non-Markovian evolutions
|
6 pages
|
Physical Review A 81 (2010) 032101
|
10.1103/PhysRevA.81.032101
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
If the dynamics of an open quantum systems is non-Markovian, its {asymptotic}
state strongly depends on the initial conditions, even if the dynamics
possesses an {invariant} state. This is the very essence of memory effects. In
particular, the {asymptotic} state can remember and partially preserve its
initial entanglement. Interestingly, even if the non-Markovian evolution
relaxes to an equilibrium state, this state needs not be invariant. Therefore,
the non-invariance of equilibrium becomes a clear sign of non-Markovianity.
|
[{'version': 'v1', 'created': 'Sun, 28 Jun 2009 08:52:32 GMT'}
{'version': 'v2', 'created': 'Tue, 19 Jan 2010 16:17:50 GMT'}]
|
2010-11-29
|
[array(['Chruściński', 'Dariusz', ''], dtype=object)
array(['Kossakowski', 'Andrzej', ''], dtype=object)
array(['Pascazio', 'Saverio', ''], dtype=object)]
|
18,842 |
1004.2182
|
Francois Roueff
|
Fran\c{c}ois Roueff (LTCI), Gennady Samorodnitsky, Philippe Soulier
(MODAL'X)
|
Function-indexed empirical processes based on an infinite source Poisson
transmission stream
| null |
Bernoulli 18 (3), (2012) 783-802
|
10.3150/11-BEJ367
| null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the asymptotic behavior of empirical processes generated by
measurable bounded functions of an infinite source Poisson transmission process
when the session length have infinite variance. In spite of the boundedness of
the function, the normalized fluctuations of such an empirical process converge
to a non-Gaussian stable process. This phenomenon can be viewed as caused by
the long-range dependence in the transmission process. Completing previous
results on the empirical mean of similar types of processes, our results on
non-linear bounded functions exhibit the influence of the limit transmission
rate distribution at high session lengths on the asymptotic behavior of the
empirical process. As an illustration, we apply the main result to estimation
of the distribution function of the steady state value of the transmission
process.
|
[{'version': 'v1', 'created': 'Tue, 13 Apr 2010 13:26:39 GMT'}
{'version': 'v2', 'created': 'Fri, 15 Oct 2010 12:29:42 GMT'}
{'version': 'v3', 'created': 'Tue, 10 Jul 2012 06:45:30 GMT'}]
|
2012-07-11
|
[array(['Roueff', 'François', '', 'LTCI'], dtype=object)
array(['Samorodnitsky', 'Gennady', '', "MODAL'X"], dtype=object)
array(['Soulier', 'Philippe', '', "MODAL'X"], dtype=object)]
|
18,843 |
2003.02679
|
Luis Ferroni
|
Luis Ferroni
|
On the Ehrhart Polynomial of Minimal Matroids
|
15 pages, 2 figures. To appear in Discrete and Computational Geometry
| null |
10.1007/s00454-021-00313-4
| null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We provide a formula for the Ehrhart polynomial of the connected matroid of
size $n$ and rank $k$ with the least number of bases, also known as a minimal
matroid. We prove that their polytopes are Ehrhart positive and
$h^*$-real-rooted (and hence unimodal). We prove that the operation of
circuit-hyperplane relaxation relates minimal matroids and matroid polytopes
subdivisions, and also preserves Ehrhart positivity. We state two conjectures:
that indeed all matroids are $h^*$-real-rooted, and that the coefficients of
the Ehrhart polynomial of a connected matroid of fixed rank and cardinality are
bounded by those of the corresponding minimal matroid and the corresponding
uniform matroid.
|
[{'version': 'v1', 'created': 'Thu, 5 Mar 2020 14:46:30 GMT'}
{'version': 'v2', 'created': 'Thu, 9 Apr 2020 22:19:18 GMT'}
{'version': 'v3', 'created': 'Tue, 23 Mar 2021 15:56:34 GMT'}]
|
2021-06-17
|
[array(['Ferroni', 'Luis', ''], dtype=object)]
|
18,844 |
1111.6935
|
Yogiro Hama
|
Yogiro Hama (1), Rone P.G. Andrade (1), Frederique Grassi (1) and
Wei-Liang Qian (2) ((1) Instituto de Fisica, Universidade de Sao Paulo, Sao
Paulo, Brazil, (2) Departamento de Fisica, Universidade Federal de Ouro
Preto, Ouro Preto-MG, Brazil)
|
On the Origin of the Trigger-Angle Dependence of the Ridge Structure
|
4 pages, 4 figures, prepared for ISMD 2011 Proceedings
|
Prog.Theor.Phys.Suppl. 193 (2012) 167-171
|
10.1143/PTPS.193.167
| null |
hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The origin of the trigger-angle dependence of the ridge structure in
two-hadron long-range correlations, as observed at RHIC, is discussed as due to
an interplay between the elliptic flow caused by the initial state global
geometry and flow produced by fluctuations.
|
[{'version': 'v1', 'created': 'Tue, 29 Nov 2011 19:09:01 GMT'}]
|
2015-06-03
|
[array(['Hama', 'Yogiro', ''], dtype=object)
array(['Andrade', 'Rone P. G.', ''], dtype=object)
array(['Grassi', 'Frederique', ''], dtype=object)
array(['Qian', 'Wei-Liang', ''], dtype=object)]
|
18,845 |
1112.4106
|
Ravi Chugh
|
Ravi Chugh and David Herman and Ranjit Jhala
|
Dependent Types for JavaScript
| null | null | null | null |
cs.PL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present Dependent JavaScript (DJS), a statically-typed dialect of the
imperative, object-oriented, dynamic language. DJS supports the particularly
challenging features such as run-time type-tests, higher-order functions,
extensible objects, prototype inheritance, and arrays through a combination of
nested refinement types, strong updates to the heap, and heap unrolling to
precisely track prototype hierarchies. With our implementation of DJS, we
demonstrate that the type system is expressive enough to reason about a variety
of tricky idioms found in small examples drawn from several sources, including
the popular book JavaScript: The Good Parts and the SunSpider benchmark suite.
|
[{'version': 'v1', 'created': 'Sun, 18 Dec 2011 01:42:11 GMT'}
{'version': 'v2', 'created': 'Mon, 16 Apr 2012 07:22:59 GMT'}
{'version': 'v3', 'created': 'Wed, 1 Aug 2012 04:56:07 GMT'}]
|
2012-08-02
|
[array(['Chugh', 'Ravi', ''], dtype=object)
array(['Herman', 'David', ''], dtype=object)
array(['Jhala', 'Ranjit', ''], dtype=object)]
|
18,846 |
hep-th/9703062
|
John Schwarz
|
Sergey Cherkis and John H. Schwarz
|
Wrapping the M Theory Five-Brane on K3
|
14 pages, latex, no figures; an error has been corrected
|
Phys.Lett.B403:225-232,1997
|
10.1016/S0370-2693(97)00360-2
|
CALT-68-2103
|
hep-th
| null |
Using a recently constructed M5-brane world-volume action, we demonstrate
that wrapping the M5-brane on K3 gives the heterotic string in seven
dimensions. To facilitate the comparison, a new version of the world-sheet
action for the Narain-compactified heterotic string, with manifest T duality
invariance, is formulated.
|
[{'version': 'v1', 'created': 'Fri, 7 Mar 1997 21:58:04 GMT'}
{'version': 'v2', 'created': 'Thu, 8 May 1997 23:12:09 GMT'}]
|
2009-02-11
|
[array(['Cherkis', 'Sergey', ''], dtype=object)
array(['Schwarz', 'John H.', ''], dtype=object)]
|
18,847 |
math-ph/0509035
|
Sigitas Alisauskas
|
S. Alisauskas
|
Integrals involving triplets of Jacobi and Gegenbauer polynomials and
some 3j-symbols of SO(n), SU(n) and Sp(4)
|
28 pages, Chapter 9 (invited contribution) in Studies of Mathematical
Physics Research, Ed. Ch. V.Benton (Nova Science Publ., Hauppauge NY), pp.
203--241, 2004
| null | null | null |
math-ph math.MP
| null |
The coupling coefficients (3j-symbols) for the symmetric (most degenerate)
irreducible representations of the orthogonal groups SO(n) in a canonical basis
and different semicanonical (tree) bases [with SO(n) restricted to SO(n')\times
SO(n''), n'+n''=n] are expressed in terms of the integrals involving triplets
of the Gegenbauer and the Jacobi polynomials. The derived usual
triple-hypergeometric series (which do not reveal the apparent triangle
conditions of the 3j-symbols) are rearranged (in contrast with math-ph/0201048)
directly [without using their relation with the semistretched isofactors of the
second kind for the complementary chain Sp(4)\supset SU(2)\times SU(2)] into
formulas with more rich limits for summation intervals and obvious triangle
conditions. The isofactors for the class-one representations of the orthogonal
groups and for the class-two representations of the unitary groups (and, of
course, the related integrals) turn into the double sums in the cases of the
canonical SO(n)\supset SO(n-1) or U(n)\supset U(n-1) and semicanonical
SO(n)\supset SO(n-2)\times SO(2) chains, as well as into the $_4F_3(1)$ series
under more specific conditions. Expressions for the most general isofactors of
SO(n) for coupling of the two symmetric irreps in the canonical basis are also
derived.
|
[{'version': 'v1', 'created': 'Fri, 16 Sep 2005 13:23:48 GMT'}]
|
2007-05-23
|
[array(['Alisauskas', 'S.', ''], dtype=object)]
|
18,848 |
cond-mat/9404016
|
Emilio Hernandez-Garcia
|
I.S. Graham, E. Hernandez-Garcia, and M. Grant
|
Damage Spreading During Domain Growth
|
4 pags of revtex3 + 3 postscript files appended as a compressed and
uuencoded file. UIB9403200
|
Phys. Rev. E 49, R4763-4766 (1994)
|
10.1103/PhysRevE.49.R4763
| null |
cond-mat hep-lat
| null |
We study damage spreading in models of two-dimensional systems undergoing
first order phase transitions. We consider several models from the same
non-conserved order parameter universality class, and find unexpected
differences between them. An exact solution of the Ohta-Jasnow-Kawasaki model
yields the damage growth law $D \sim t^{\phi}$, where $\phi = t^{d/4}$ in $d$
dimensions. In contrast, time-dependent Ginzburg-Landau simulations and Ising
simulations in $d= 2$ using heat-bath dynamics show power-law growth, but with
an exponent of approximately $0.36$, independent of the system sizes studied.
In marked contrast, Metropolis dynamics shows damage growing via $\phi \sim
1$, although the damage difference grows as $t^{0.4}$. PACS: 64.60.-i, 05.50.+q
|
[{'version': 'v1', 'created': 'Thu, 7 Apr 1994 16:33:49 GMT'}]
|
2009-10-22
|
[array(['Graham', 'I. S.', ''], dtype=object)
array(['Hernandez-Garcia', 'E.', ''], dtype=object)
array(['Grant', 'M.', ''], dtype=object)]
|
18,849 |
1406.4084
|
Jeffrey Lee
|
Jeffrey G. Lee and W. T. Hill III
|
Spatial shaping for generating arbitrary optical dipoles traps for
ultracold degenerate gases
|
6 pages, 2 figures
| null |
10.1063/1.4895676
| null |
physics.atom-ph physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present two spatial-shaping approaches -- phase and amplitude -- for
creating two-dimensional optical dipole potentials for ultracold neutral atoms.
When combined with an attractive or repulsive Gaussian sheet formed by an
astigmatically focused beam, atoms are trapped in three dimensions resulting in
planar confinement with an arbitrary network of potentials -- a free-space atom
chip. The first approach utilizes an adaptation of the generalized
phase-contrast technique to convert a phase structure embedded in a beam after
traversing a phase mask, to an identical intensity profile in the image plane.
Phase masks, and a requisite phase-contrast filter, can be chemically etched
into optical material (e.g., fused silica) or implemented with spatial light
modulators; etching provides the highest quality while spatial light modulators
enable prototyping and realtime structure modification. This approach was
demonstrated on an ensemble of thermal atoms. Amplitude shaping is possible
when the potential structure is made as an opaque mask in the path of a dipole
trap beam, followed by imaging the shadow onto the plane of the atoms. While
much more lossy, this very simple and inexpensive approach can produce dipole
potentials suitable for containing degenerate gases. High-quality amplitude
masks can be produced with standard photolithography techniques. Amplitude
shaping was demonstrated on a Bose-Einsten condensate.
|
[{'version': 'v1', 'created': 'Mon, 16 Jun 2014 17:45:56 GMT'}]
|
2015-06-22
|
[array(['Lee', 'Jeffrey G.', ''], dtype=object)
array(['Hill', 'W. T.', 'III'], dtype=object)]
|
18,850 |
cond-mat/0502014
|
Gretchen Campbell
|
Gretchen K. Campbell, Aaron E. Leanhardt, Jongchul Mun, Micah Boyd,
Erik W. Streed, Wolfgang Ketterle and David E. Pritchard
|
Photon recoil momentum in dispersive media
| null | null |
10.1103/PhysRevLett.94.170403
| null |
cond-mat.other
| null |
A systematic shift of the photon recoil due to the index of refraction of a
dilute gas of atoms has been observed. The recoil frequency was determined with
a two-pulse light grating interferometer using near-resonant laser light. The
results show that the recoil momentum of atoms caused by the absorption of a
photon is n\hbar k, where n is the index of refraction of the gas and k is the
vacuum wavevector of the photon. This systematic effect must be accounted for
in high-precision atom interferometry with light gratings.
|
[{'version': 'v1', 'created': 'Tue, 1 Feb 2005 04:31:19 GMT'}]
|
2009-11-11
|
[array(['Campbell', 'Gretchen K.', ''], dtype=object)
array(['Leanhardt', 'Aaron E.', ''], dtype=object)
array(['Mun', 'Jongchul', ''], dtype=object)
array(['Boyd', 'Micah', ''], dtype=object)
array(['Streed', 'Erik W.', ''], dtype=object)
array(['Ketterle', 'Wolfgang', ''], dtype=object)
array(['Pritchard', 'David E.', ''], dtype=object)]
|
18,851 |
2103.09037
|
Martin Pfurner
|
Thomas Stigger, Johannes Siegele, Daniel F. Scharler, Martin Pfurner
and Manfred L. Husty
|
Analysis of a 3-RUU Parallel Manipulator
| null |
Mechanism and Machine Theory, Volume 136, June 2019, Pages 256-268
|
10.1016/j.mechmachtheory.2019.03.011
| null |
cs.RO math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The aim of this paper is to give a detailed examination of the input and
output singularities of a 3-RUU parallel manipulator in the translational
operation mode. This task is achieved by using algebraic constraint equations.
For this type of manipulator a complete workspace representation in Study
coordinates is presented after elimination of the input parameters. Both, input
and output singularities are mapped into a Study subspace as well as into the
joint space. Therewith a detailed singularity investigation of the
translational operation mode of a 3-RUU parallel manipulator is provided. This
paper is an extended version of a previous publication. The addendum comprises
the discovery of a possible transition between two operation modes as well as a
self motion and an examination of another component of the output singularity
surface, most of them for arbitrary design parameters.
|
[{'version': 'v1', 'created': 'Tue, 16 Mar 2021 13:13:51 GMT'}]
|
2021-03-17
|
[array(['Stigger', 'Thomas', ''], dtype=object)
array(['Siegele', 'Johannes', ''], dtype=object)
array(['Scharler', 'Daniel F.', ''], dtype=object)
array(['Pfurner', 'Martin', ''], dtype=object)
array(['Husty', 'Manfred L.', ''], dtype=object)]
|
18,852 |
0808.4067
|
Oliver Riordan
|
Oliver Riordan and Nicholas Wormald
|
The diameter of sparse random graphs
|
92 pages; expanded slightly with minor corrections; to appear in
Combinatorics, Probability and Computing
|
Combinatorics, Probability and Computing 19 (2010), 835--926
|
10.1017/S0963548310000325
| null |
math.PR math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we study the diameter of the random graph $G(n,p)$, i.e., the
the largest finite distance between two vertices, for a wide range of functions
$p=p(n)$. For $p=\la/n$ with $\la>1$ constant, we give a simple proof of an
essentially best possible result, with an $O_p(1)$ additive correction term.
Using similar techniques, we establish 2-point concentration in the case that
$np\to\infty$. For $p=(1+\epsilon)/n$ with $\epsilon\to 0$, we obtain a
corresponding result that applies all the way down to the scaling window of the
phase transition, with an $O_p(1/\epsilon)$ additive correction term whose
(appropriately scaled) limiting distribution we describe. Combined with earlier
results, our new results complete the determination of the diameter of the
random graph $G(n,p)$ to an accuracy of the order of its standard deviation (or
better), for all functions $p=p(n)$. Throughout we use branching process
methods, rather than the more common approach of separate analysis of the
2-core and the trees attached to it.
|
[{'version': 'v1', 'created': 'Fri, 29 Aug 2008 10:26:48 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Aug 2009 12:22:10 GMT'}
{'version': 'v3', 'created': 'Mon, 6 Sep 2010 17:09:22 GMT'}]
|
2010-10-07
|
[array(['Riordan', 'Oliver', ''], dtype=object)
array(['Wormald', 'Nicholas', ''], dtype=object)]
|
18,853 |
1909.02465
|
Iulia Ghiu
|
Iulia Ghiu
|
Simultaneous sorting many quDits using different input ports
| null |
Quantum Information Processing 18, 285 (2019)
|
10.1007/s11128-019-2395-2
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Quantum sorter has gained a lot of attention during the last years due to its
wide application in quantum information processing and quantum technologies. A
challenging task is the construction of a quantum sorter, which collect many
high-dimensional quantum systems, which are simultaneously incident on
different input ports of the device. In this paper we give the definition of
the general quantum sorter of multi-level quantum systems. We prove the
impossibility of the construction of the perfect quantum sorter, which works
for many particles incident on any input port, while keeping their states
unmodified. Further we propose an approximate multi-particle multi-input-port
quantum sorter, which performs the selection of the particles in a certain
output port according to the properties of the initial states, but changing the
final states. This method is useful for those situations which require high
speed of quantum state sorting. Thus, the information contained in the initial
states of the particles is revealed by the click statistics of the detectors
situated in each output port.
|
[{'version': 'v1', 'created': 'Thu, 5 Sep 2019 14:57:15 GMT'}]
|
2019-09-06
|
[array(['Ghiu', 'Iulia', ''], dtype=object)]
|
18,854 |
hep-th/9412202
|
Jean-Bernard Zuber
|
J.-B. Zuber
|
Conformal, Integrable and Topological Theories, Graphs and Coxeter
Groups
|
21 pages, uuencoded, tex, 5 figures included, uses harvmac and epsf
(Talk delivered at the International Conference of Mathematical Physics,
Paris 18-23 July 1994)
| null | null |
SPhT 94/156
|
hep-th
| null |
I review three different problems occuring in two dimensional field theory:
1) classification of conformal field theories; 2) construction of lattice
integrable realizations of the latter; 3) solutions to the WDVV equations of
topological field theories. I show that a structure of Coxeter group is hidden
behind these three related problems.
|
[{'version': 'v1', 'created': 'Thu, 22 Dec 1994 17:41:45 GMT'}]
|
2007-05-23
|
[array(['Zuber', 'J. -B.', ''], dtype=object)]
|
18,855 |
2108.03288
|
Atik Faysal
|
Atik Faysal, Ngui Wai Keng, M. H. Lim
|
Ensemble Augmentation for Deep Neural Networks Using 1-D Time Series
Vibration Data
|
The paper has severe scientific errors and needs significant
modifications
| null | null | null |
cs.LG cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Time-series data are one of the fundamental types of raw data representation
used in data-driven techniques. In machine condition monitoring, time-series
vibration data are overly used in data mining for deep neural networks.
Typically, vibration data is converted into images for classification using
Deep Neural Networks (DNNs), and scalograms are the most effective form of
image representation. However, the DNN classifiers require huge labeled
training samples to reach their optimum performance. So, many forms of data
augmentation techniques are applied to the classifiers to compensate for the
lack of training samples. However, the scalograms are graphical representations
where the existing augmentation techniques suffer because they either change
the graphical meaning or have too much noise in the samples that change the
physical meaning. In this study, a data augmentation technique named ensemble
augmentation is proposed to overcome this limitation. This augmentation method
uses the power of white noise added in ensembles to the original samples to
generate real-like samples. After averaging the signal with ensembles, a new
signal is obtained that contains the characteristics of the original signal.
The parameters for the ensemble augmentation are validated using a simulated
signal. The proposed method is evaluated using 10 class bearing vibration data
using three state-of-the-art Transfer Learning (TL) models, namely,
Inception-V3, MobileNet-V2, and ResNet50. Augmented samples are generated in
two increments: the first increment generates the same number of fake samples
as the training samples, and in the second increment, the number of samples is
increased gradually. The outputs from the proposed method are compared with no
augmentation, augmentations using deep convolution generative adversarial
network (DCGAN), and several geometric transformation-based augmentations...
|
[{'version': 'v1', 'created': 'Fri, 6 Aug 2021 20:04:29 GMT'}
{'version': 'v2', 'created': 'Thu, 13 Jan 2022 14:49:36 GMT'}]
|
2022-01-14
|
[array(['Faysal', 'Atik', ''], dtype=object)
array(['Keng', 'Ngui Wai', ''], dtype=object)
array(['Lim', 'M. H.', ''], dtype=object)]
|
18,856 |
0902.3183
|
Matthias H. Hettler
|
Benjamin B. Schmidt, Matthias H. Hettler, and Gerd Sch\"on
|
Charge correlations in polaron hopping through molecules
|
13 pages, 10 figures, submitted to Phys. Rev. B
| null |
10.1103/PhysRevB.82.155113
| null |
cond-mat.mes-hall cond-mat.dis-nn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In many organic molecules the strong coupling of excess charges to
vibrational modes leads to the formation of polarons, i.e., a localized state
of a charge carrier and a molecular deformation. Incoherent hopping of polarons
along the molecule is the dominant mechanism of transport at room temperature.
We study the far-from-equilibrium situation where, due to the applied bias, the
induced number of charge carriers on the molecule is high enough such that
charge correlations become relevant. We develop a diagrammatic theory that
exactly accounts for all many-particle correlations functions for incoherent
transport through a finite system. We compute the transport properties of short
sequences of DNA by expanding the diagrammatic theory up to second order in the
hopping parameters. The correlations qualitatively modify the I-V
characteristics as compared to those approaches where correlations are dealt
with in a mean-field type approximation only.
|
[{'version': 'v1', 'created': 'Wed, 18 Feb 2009 16:21:22 GMT'}]
|
2015-05-13
|
[array(['Schmidt', 'Benjamin B.', ''], dtype=object)
array(['Hettler', 'Matthias H.', ''], dtype=object)
array(['Schön', 'Gerd', ''], dtype=object)]
|
18,857 |
1111.4791
|
YIng Xu
|
Ying Xu, Junbo Li
|
Quantizations of the extended affine Lie algebra
$\widetilde{\frak{sl}_2(\mathbb{C}_q)}$
|
25 pages
| null | null | null |
math.QA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The extended affine Lie algebra $\widetilde{\frak{sl}_2(\mathbb{C}_q)}$ is
quantized from three different points of view in this paper, which produces
three noncommutative and noncocommutative Hopf algebra structures, and yield
other three quantizations by an isomorphism of
$\widetilde{\frak{sl}_2(\mathbb{C}_q)}$ correspondingly. Moreover, two of these
quantizations can be restricted to the extended affine Lie algebra
${sl_2(\mathbb{C}_q)}$.
|
[{'version': 'v1', 'created': 'Mon, 21 Nov 2011 08:56:01 GMT'}]
|
2011-11-22
|
[array(['Xu', 'Ying', ''], dtype=object)
array(['Li', 'Junbo', ''], dtype=object)]
|
18,858 |
2106.10337
|
Joseph Kleinhenz
|
Joseph Kleinhenz, Igor Krivenko, Guy Cohen, Emanuel Gull
|
The Kondo Cloud in a 1D Nanowire
| null | null | null | null |
cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A recent experiment [Nature 579, 210--213 (2020)] probed the extent of the
Kondo cloud in 1D by measuring the effect of electrostatic perturbations
applied a distance $L$ away from the impurity on $T_K$. We study the Kondo
cloud in a model proposed to describe this experimental setup, consisting of a
single impurity Anderson model coupled to two semi-infinite 1D leads. In
agreement with the experimental results, we find that $T_K$ is strongly
affected by perturbations to the lead within the Kondo cloud. We obtain a
complementary picture of the Kondo cloud in this system by observing how the
Kondo state manifests itself in the local density of states of the leads, which
may be observed experimentally via scanning tunneling microscopy. Our results
support the existing experimental data and provide detailed predictions for
future experiments seeking to characterize the Kondo cloud in this system.
|
[{'version': 'v1', 'created': 'Fri, 18 Jun 2021 19:52:43 GMT'}]
|
2021-06-22
|
[array(['Kleinhenz', 'Joseph', ''], dtype=object)
array(['Krivenko', 'Igor', ''], dtype=object)
array(['Cohen', 'Guy', ''], dtype=object)
array(['Gull', 'Emanuel', ''], dtype=object)]
|
18,859 |
1801.05500
|
Ursula Challita
|
Ursula Challita and Walid Saad and Christian Bettstetter
|
Cellular-Connected UAVs over 5G: Deep Reinforcement Learning for
Interference Management
| null |
IEEE Transactions on Wireless Communications, 2019
|
10.1109/TWC.2019.2900035
| null |
cs.IT cs.AI cs.GT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, an interference-aware path planning scheme for a network of
cellular-connected unmanned aerial vehicles (UAVs) is proposed. In particular,
each UAV aims at achieving a tradeoff between maximizing energy efficiency and
minimizing both wireless latency and the interference level caused on the
ground network along its path. The problem is cast as a dynamic game among
UAVs. To solve this game, a deep reinforcement learning algorithm, based on
echo state network (ESN) cells, is proposed. The introduced deep ESN
architecture is trained to allow each UAV to map each observation of the
network state to an action, with the goal of minimizing a sequence of
time-dependent utility functions. Each UAV uses ESN to learn its optimal path,
transmission power level, and cell association vector at different locations
along its path. The proposed algorithm is shown to reach a subgame perfect Nash
equilibrium (SPNE) upon convergence. Moreover, an upper and lower bound for the
altitude of the UAVs is derived thus reducing the computational complexity of
the proposed algorithm. Simulation results show that the proposed scheme
achieves better wireless latency per UAV and rate per ground user (UE) while
requiring a number of steps that is comparable to a heuristic baseline that
considers moving via the shortest distance towards the corresponding
destinations. The results also show that the optimal altitude of the UAVs
varies based on the ground network density and the UE data rate requirements
and plays a vital role in minimizing the interference level on the ground UEs
as well as the wireless transmission delay of the UAV.
|
[{'version': 'v1', 'created': 'Tue, 16 Jan 2018 22:35:55 GMT'}]
|
2019-05-03
|
[array(['Challita', 'Ursula', ''], dtype=object)
array(['Saad', 'Walid', ''], dtype=object)
array(['Bettstetter', 'Christian', ''], dtype=object)]
|
18,860 |
1801.03657
|
Stefan Wabnitz
|
A. Bendahmane, K. Krupa, A. Tonello, D. Modotto, T. Sylvestre, V.
Couderc, S. Wabnitz, G. Millot
|
Seeded intermodal four-wave mixing in a highly multimode fiber
| null | null |
10.1364/JOSAB.35.000295
| null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We experimentally and theoretically investigate the process of seeded
intermodal four-wave mixing in a graded index multimode fiber, pumped in the
normal dispersion regime. By using a fiber with a 100 micron core diameter, we
generate a parametric sideband in the C band (1530-1565 nm), hence allowing the
use of an Erbium-based laser to seed the mixing process. To limit nonlinear
coupling between the pump and the seed to low-order fiber modes, the waist
diameter of the pump beam is properly adjusted. We observe that the
superimposed seed stimulates the generation of new spectral sidebands. A
detailed characterization of the spectral and spatial properties of these
sidebands shows good agreement with theoretical predictions from the
phase-matching conditions. Interestingly, we demonstrate that both the second
and the fourth-order dispersions must be included in the phase matching
conditions to get better agreement with experimental measurements. Furthermore,
temporal measurements performed with a fast photodiode reveal the generation of
multiple pulse structures.
|
[{'version': 'v1', 'created': 'Thu, 11 Jan 2018 08:02:45 GMT'}]
|
2018-02-14
|
[array(['Bendahmane', 'A.', ''], dtype=object)
array(['Krupa', 'K.', ''], dtype=object)
array(['Tonello', 'A.', ''], dtype=object)
array(['Modotto', 'D.', ''], dtype=object)
array(['Sylvestre', 'T.', ''], dtype=object)
array(['Couderc', 'V.', ''], dtype=object)
array(['Wabnitz', 'S.', ''], dtype=object)
array(['Millot', 'G.', ''], dtype=object)]
|
18,861 |
cond-mat/0311006
|
Bin Zhou
|
Bin Zhou, Ruibao Tao, and Shun-Qing Shen
|
Quantum-classical transition of the escape rate of uniaxial
antiferromagnetic particles in an arbitrarily directed field
|
to be appeared in Phys. Rev. B
|
Phys. Rev. B 68, 214423 (2003)
|
10.1103/PhysRevB.68.214423
| null |
cond-mat.mes-hall
| null |
Quantum-classical escape rate transition has been studied for uniaxial
antiferromagnetic particles with an arbitrarily directed magnetic field. In the
case that the transverse and longitudinal fileds coexist, we calculate the
phase boundary line between first- and second-order transitions, from which
phase diagrams can be obtained. It is shown that the effects of the applied
longitudinal magnetic field on quantum-classical transition vary greatly for
different relative magnitudes of the non-compensation.
|
[{'version': 'v1', 'created': 'Sat, 1 Nov 2003 01:48:56 GMT'}]
|
2007-05-23
|
[array(['Zhou', 'Bin', ''], dtype=object)
array(['Tao', 'Ruibao', ''], dtype=object)
array(['Shen', 'Shun-Qing', ''], dtype=object)]
|
18,862 |
1903.11858
|
Roman Matthias Berner
|
Roman Berner, Yifan Chen, Antonio Ereditato, Patrick P. Koller, Igor
Kreslo, David Lorca, Thomas Mettler, Francesco Piastra, James R. Sinclair,
Michael S. Weber, Ting Miao
|
First Operation of a Resistive Shell Liquid Argon Time Projection
Chamber -- A new Approach to Electric-Field Shaping
|
13 pages
| null |
10.3390/instruments3020028
| null |
physics.ins-det hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a new technology for the shaping of the electric field in Time
Projection Chambers (TPCs) using a carbon-loaded polyimide foil. This
technology allows for the minimisation of passive material near the active
volume of the TPC and thus is capable to reduce background events originating
from radioactive decays or scattering on the material itself. Furthermore, the
high and continuous electric resistivity of the foil limits the power
dissipation per unit area and minimizes the risks of damages in the case of an
electric field breakdown. Replacing the conventional field cage with a
resistive plastic film structure called 'shell' decreases the number of
components within the TPC and therefore reduces the potential points of failure
when operating the detector. A prototype liquid argon (LAr) TPC with such a
resistive shell and with a cathode made of the same material was successfully
tested for long term operation with electric field values up to about 1.5
kV/cm. The experiment shows that it is feasible to successfully produce and
shape the electric field in liquefied noble-gas detectors with this new
technology.
|
[{'version': 'v1', 'created': 'Thu, 28 Mar 2019 09:42:09 GMT'}
{'version': 'v2', 'created': 'Fri, 29 Mar 2019 03:48:10 GMT'}]
|
2019-05-15
|
[array(['Berner', 'Roman', ''], dtype=object)
array(['Chen', 'Yifan', ''], dtype=object)
array(['Ereditato', 'Antonio', ''], dtype=object)
array(['Koller', 'Patrick P.', ''], dtype=object)
array(['Kreslo', 'Igor', ''], dtype=object)
array(['Lorca', 'David', ''], dtype=object)
array(['Mettler', 'Thomas', ''], dtype=object)
array(['Piastra', 'Francesco', ''], dtype=object)
array(['Sinclair', 'James R.', ''], dtype=object)
array(['Weber', 'Michael S.', ''], dtype=object)
array(['Miao', 'Ting', ''], dtype=object)]
|
18,863 |
1410.3669
|
Scientific Information Service CERN
|
R. Giachino (CERN)
|
Diagnostics needs for beam-beam studies and optimization
|
3 pages, contribution to the ICFA Mini-Workshop on Beam-Beam Effects
in Hadron Colliders, CERN, Geneva, Switzerland, 18-22 Mar 2013
|
CERN Yellow Report CERN-2014-004, pp.189-191
|
10.5170/CERN-2014-004.189
| null |
physics.acc-ph
|
http://creativecommons.org/licenses/by/3.0/
|
During the recent years of LHC operation, we analysed the situation of beam
instrumentation and the need to optimize it for beam-beam studies. The most
important beam instrumentation devices will be highlighted and modifications or
optimizations will be suggested. A complete wish list will be presented to make
sure we will be ready after LS1 (Long Shutdown 1) to study the beam-beam effect
in a more complete way.
|
[{'version': 'v1', 'created': 'Tue, 14 Oct 2014 12:29:53 GMT'}]
|
2014-10-15
|
[array(['Giachino', 'R.', '', 'CERN'], dtype=object)]
|
18,864 |
2303.18124
|
Miquel Royo
|
Matteo Springolo, Miquel Royo and Massimiliano Stengel
|
Unconventional linear flexoelectricity in two-dimensional materials
| null | null | null | null |
cond-mat.mtrl-sci cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We predict a large in-plane polarization response to bending in a broad class
of trigonal two-dimensional crystals. We define and compute the relevant
flexoelectric coefficients from first principles as linear-response properties
of the undistorted layer, by using the primitive crystal cell. The ensuing
response (evaluated for SnS$_{2}$, silicene, phosphorene and RhI$_{3}$
monolayers and for an h-BN bilayer) is up to one order of magnitude larger than
the out-of-plane components in the same material. We illustrate the
implications of our findings by calculating the spontaneous axial polarization
in nanotubes of arbitrary geometry, and the longitudinal electric fields
induced by a flexural phonon.
|
[{'version': 'v1', 'created': 'Fri, 31 Mar 2023 15:08:17 GMT'}]
|
2023-04-03
|
[array(['Springolo', 'Matteo', ''], dtype=object)
array(['Royo', 'Miquel', ''], dtype=object)
array(['Stengel', 'Massimiliano', ''], dtype=object)]
|
18,865 |
hep-lat/9608083
|
Uwe Glaessner
|
SESAM-Collaboration, U. Glaessner, S. Guesken, H. Hoeber, Th. Lippert,
G. Ritzenhoefer, K. Schilling, G. Siegert, and A. Spitz
|
Light Spectrum and Decay Constants in Full QCD with Wilson Fermions
|
3 pages, LaTeX with 4 eps figures, Talk presented at
LATTICE96(spectrum)
|
Nucl.Phys.Proc.Suppl. 53 (1997) 219-221
|
10.1016/S0920-5632(96)00619-6
|
HLRZ 61/96
|
hep-lat
| null |
We present results from an analysis of the light spectrum and the decay
constants f_{\pi} and f_V^{-1} in Full QCD with n_f=2 Wilson fermions at a
coupling of beta=5.6 on a 16^3x32 lattice.
|
[{'version': 'v1', 'created': 'Thu, 15 Aug 1996 12:30:49 GMT'}]
|
2009-10-28
|
[array(['SESAM-Collaboration', '', ''], dtype=object)
array(['Glaessner', 'U.', ''], dtype=object)
array(['Guesken', 'S.', ''], dtype=object)
array(['Hoeber', 'H.', ''], dtype=object)
array(['Lippert', 'Th.', ''], dtype=object)
array(['Ritzenhoefer', 'G.', ''], dtype=object)
array(['Schilling', 'K.', ''], dtype=object)
array(['Siegert', 'G.', ''], dtype=object)
array(['Spitz', 'A.', ''], dtype=object)]
|
18,866 |
cond-mat/0210557
|
Mario Liu
|
Yimin Jiang, Mario Liu
|
Granular Elasticity without the Coulomb Condition
|
4pages, 2 figures
| null |
10.1103/PhysRevLett.91.144301
| null |
cond-mat.soft
| null |
An self-contained elastic theory is derived which accounts both for
mechanical yield and shear-induced volume dilatancy. Its two essential
ingredients are thermodynamic instability and the dependence of the elastic
moduli on compression.
|
[{'version': 'v1', 'created': 'Thu, 24 Oct 2002 21:04:49 GMT'}
{'version': 'v2', 'created': 'Mon, 7 Apr 2003 17:11:46 GMT'}]
|
2009-11-07
|
[array(['Jiang', 'Yimin', ''], dtype=object)
array(['Liu', 'Mario', ''], dtype=object)]
|
18,867 |
1501.06358
|
Andrea D'Andrea Dr.
|
A. D'Andrea and N. Tomassini
|
Resonant Bragg quantum wells in hybrid photonic crystals
| null | null | null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The exciton-polariton propagation in resonant hybrid (isotropic/anisotropic)
periodic stacks, with misaligned in plane anisotropy and Bragg photon frequency
in resonance with Wannier exciton of 2D quantum wells, is studied by
self-consistent theory and in the effective mass approximation. The optical
tailoring of this new class of resonant Bragg re ectors, where the structural
periodicity of a multi-layer drives the periodicity of the in-plane optical ^ C
axis orientation, is computed for symmetric and non-symmetric elementary cell
by conserving strong radiation-matter coupling and photonic band gap. We will
demonstrate, by selected numerical examples, that the behavior of the so called
intermediate dispersion curves (IDC), that drop between upper and lower
branches of the lowest energy band gap, are strongly dependent from in-plane ^
C axis orientation. Therefore, we guess that this class of hybrid
meta-materials is promising for new trapping light optical devices based on IDC
behavior.
|
[{'version': 'v1', 'created': 'Mon, 26 Jan 2015 12:00:49 GMT'}]
|
2015-01-27
|
[array(["D'Andrea", 'A.', ''], dtype=object)
array(['Tomassini', 'N.', ''], dtype=object)]
|
18,868 |
2304.06443
|
Ivan Nourdin
|
Valentin Garino and Ivan Nourdin
|
Total variation bound for Hadwiger's functional using Stein's method
|
24 pages
| null | null | null |
math.PR
|
http://creativecommons.org/licenses/by/4.0/
|
Let $K$ be a convex body in $\mathbb{R}^d$. Let $X_K$ be a $d$-dimensional
random vector distributed according to the Hadwiger-Wills density $\mu_K$
associated with $K$, defined as $\mu_K(x)=ce^{-\pi {\rm dist}^2(x,K)}$, $x\in
\mathbb{R}^d$. Finally, let the information content $H_K$ be defined as
$H_K={\rm dist}^2(X_K,K)$. The goal of this paper is to study the fluctuations
of $H_K$ around its expectation as the dimension $d$ go to infinity. Relying on
Stein's method and Brascamp-Lieb inequality, we compute an explicit bound for
the total variation distance between $H_K$ and its Gaussian counterpart.
|
[{'version': 'v1', 'created': 'Thu, 13 Apr 2023 12:26:08 GMT'}]
|
2023-04-14
|
[array(['Garino', 'Valentin', ''], dtype=object)
array(['Nourdin', 'Ivan', ''], dtype=object)]
|
18,869 |
2001.08806
|
Masoomeh Jasemi
|
Masoomeh Jasemi, Shaahin Hessabi, Nader Bagherzadeh
|
Reliable and Energy Efficient MLC STT-RAM Buffer for CNN Accelerators
| null | null | null | null |
cs.LG cs.ET
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a lightweight scheme where the formation of a data block is
changed in such a way that it can tolerate soft errors significantly better
than the baseline. The key insight behind our work is that CNN weights are
normalized between -1 and 1 after each convolutional layer, and this leaves one
bit unused in half-precision floating-point representation. By taking advantage
of the unused bit, we create a backup for the most significant bit to protect
it against the soft errors. Also, considering the fact that in MLC STT-RAMs the
cost of memory operations (read and write), and reliability of a cell are
content-dependent (some patterns take larger current and longer time, while
they are more susceptible to soft error), we rearrange the data block to
minimize the number of costly bit patterns. Combining these two techniques
provides the same level of accuracy compared to an error-free baseline while
improving the read and write energy by 9% and 6%, respectively.
|
[{'version': 'v1', 'created': 'Tue, 14 Jan 2020 18:14:42 GMT'}]
|
2020-01-27
|
[array(['Jasemi', 'Masoomeh', ''], dtype=object)
array(['Hessabi', 'Shaahin', ''], dtype=object)
array(['Bagherzadeh', 'Nader', ''], dtype=object)]
|
18,870 |
2106.08156
|
Ranjan Sharma
|
Ranjan Sharma, Arpita Ghosh, Soumik Bhattacharya and Shyam Das
|
Anisotropic generalization of Buchdahl bound for specific stellar models
|
To appear in Euro. Phys. J C
| null |
10.1140/epjc/s10052-021-09310-6
| null |
physics.gen-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Anisotropy is one factor that appears to be significantly important in the
studies of relativistic compact stars. In this paper, we make a generalization
of the Buchdahl limit by incorporating an anisotropic effect for a selected
class of exact solutions describing anisotropic stellar objects. In the
isotropic case of a homogeneous distribution, we regain the Buchdahl limit
$2M/R \leq 8/9$. Our investigation shows a direct link between the maximum
allowed compactness and pressure anisotropy vi-a-vis geometry of the associated
$3$-space.
|
[{'version': 'v1', 'created': 'Sat, 12 Jun 2021 06:18:35 GMT'}]
|
2021-07-07
|
[array(['Sharma', 'Ranjan', ''], dtype=object)
array(['Ghosh', 'Arpita', ''], dtype=object)
array(['Bhattacharya', 'Soumik', ''], dtype=object)
array(['Das', 'Shyam', ''], dtype=object)]
|
18,871 |
cs/0503078
|
Fernando Sasse D.
|
Angelo Luis Pagliosa, Claudio Cesar de Sa and Fernando D. Sasse
|
Obtaining Membership Functions from a Neuron Fuzzy System extended by
Kohonen Network
|
6 pages, 6 figures, 5th Congress of Logic Applied to Technology
(LAPTEC 2005) Himeji, Japan, April 2-6, 2005
| null | null | null |
cs.NE
| null |
This article presents the Neo-Fuzzy-Neuron Modified by Kohonen Network
(NFN-MK), an hybrid computational model that combines fuzzy system technique
and artificial neural networks. Its main task consists in the automatic
generation of membership functions, in particular, triangle forms, aiming a
dynamic modeling of a system. The model is tested by simulating real systems,
here represented by a nonlinear mathematical function. Comparison with the
results obtained by traditional neural networks, and correlated studies of
neurofuzzy systems applied in system identification area, shows that the NFN-MK
model has a similar performance, despite its greater simplicity.
|
[{'version': 'v1', 'created': 'Tue, 29 Mar 2005 19:40:14 GMT'}]
|
2007-05-23
|
[array(['Pagliosa', 'Angelo Luis', ''], dtype=object)
array(['de Sa', 'Claudio Cesar', ''], dtype=object)
array(['Sasse', 'Fernando D.', ''], dtype=object)]
|
18,872 |
2009.10478
|
Amir Levinson
|
Amir Levinson
|
Plasma kinetic effects in relativistic radiation mediated shocks
|
8 pages, 3 figures
|
Phys. Rev. E 102, 063210 (2020)
|
10.1103/PhysRevE.102.063210
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Fast shocks that form in optically thick media are mediated by Compton
scattering and, if relativistic, pair creation. Since the radiation force acts
primarily on electrons and positrons, the question arises of how the force is
mediated to the ions which are the dominant carriers of the shock energy. It
has been widely thought that a small charge separation induced by the radiation
force generates electric field inside the shock that decelerates the ions. In
this paper we argue that, while this is true in sub-relativistic shocks which
are devoid of positrons, in relativistic radiation mediated shocks (RRMS),
which are dominated by newly created $e^+e^-$ pairs, additional coupling is
needed, owing to the opposite electric force acting on electrons and positrons.
Specifically, we show that dissipation of the ions energy must involve
collective plasma interactions. By constructing a multi-fluid model for RRMS
that incorporates friction forces, we estimate that momentum transfer between
electrons and positrons (and/or ions) via collective interactions on scales of
tens to thousands proton skin depths, depending on whether friction is
effective only between $e^+e^-$ pairs or also between pairs and ions, is
sufficient to coupe all particles and radiation inside the shock into a single
fluid. This leaves open the question whether in relativistic RMS particles can
effectively accelerate to high energies by scattering off plasma turbulence.
Such acceleration might have important consequences for relativistic shock
breakout signals.
|
[{'version': 'v1', 'created': 'Tue, 22 Sep 2020 11:59:19 GMT'}]
|
2021-01-04
|
[array(['Levinson', 'Amir', ''], dtype=object)]
|
18,873 |
2106.04763
|
MohammadJavad Azizi
|
Mohammad Javad Azizi, Branislav Kveton and Mohammad Ghavamzadeh
|
Fixed-Budget Best-Arm Identification in Structured Bandits
| null | null | null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Best-arm identification (BAI) in a fixed-budget setting is a bandit problem
where the learning agent maximizes the probability of identifying the optimal
(best) arm after a fixed number of observations. Most works on this topic study
unstructured problems with a small number of arms, which limits their
applicability. We propose a general tractable algorithm that incorporates the
structure, by successively eliminating suboptimal arms based on their mean
reward estimates from a joint generalization model. We analyze our algorithm in
linear and generalized linear models (GLMs), and propose a practical
implementation based on a G-optimal design. In linear models, our algorithm has
competitive error guarantees to prior works and performs at least as well
empirically. In GLMs, this is the first practical algorithm with analysis for
fixed-budget BAI.
|
[{'version': 'v1', 'created': 'Wed, 9 Jun 2021 01:32:43 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Jun 2021 03:19:43 GMT'}
{'version': 'v3', 'created': 'Tue, 22 Jun 2021 20:39:03 GMT'}
{'version': 'v4', 'created': 'Fri, 2 Jul 2021 05:18:56 GMT'}
{'version': 'v5', 'created': 'Thu, 8 Jul 2021 21:32:05 GMT'}
{'version': 'v6', 'created': 'Wed, 4 Aug 2021 22:03:37 GMT'}
{'version': 'v7', 'created': 'Tue, 15 Mar 2022 22:32:54 GMT'}
{'version': 'v8', 'created': 'Tue, 4 Jul 2023 19:22:17 GMT'}]
|
2023-07-06
|
[array(['Azizi', 'Mohammad Javad', ''], dtype=object)
array(['Kveton', 'Branislav', ''], dtype=object)
array(['Ghavamzadeh', 'Mohammad', ''], dtype=object)]
|
18,874 |
2104.08733
|
Tao Li
|
Tao Li and Jianhua Yang
|
Can Hubbard model resist electric current?
|
3 pages, 0 figures
| null | null | null |
cond-mat.str-el cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is claimed by a recent quantum Monte Carlo simulation that the
linear-in-temperature DC resistivity observed in the high-$T_{c}$ cuprate
superconductors can be reproduced in the pure two dimensional Hubbard
model\cite{Huang}. Here we show perturbatively that such a translational
invariant electronic model can not support a steady state current in the
presence of a uniform electric field at any finite temperature. Instead, the
Hubbard model is perfectly conducting in the linear response regime and will
undergo Bloch oscillation at finite electric field for any finite temperature.
Nevertheless, the quantum Monte Carlo simulation can provide us the key
information on the temperature dependence of the Drude weight, a quantity of
central importance in the holographic description of the transport properties
of the strange metal phase.
|
[{'version': 'v1', 'created': 'Sun, 18 Apr 2021 06:10:31 GMT'}]
|
2021-04-20
|
[array(['Li', 'Tao', ''], dtype=object)
array(['Yang', 'Jianhua', ''], dtype=object)]
|
18,875 |
2006.11387
|
Michael Florian
|
Michael K. Florian, Jane R. Rigby, Ayan Acharyya, Keren Sharon,
Michael D. Gladders, Lisa Kewley, Gourav Khullar, Katya Gozman, Gabriel
Brammer, Ivelina Momcheva, David Nicholls, Stephanie LaMassa, Hakon Dahle,
Matthew B. Bayliss, Eva Wuyts, Traci Johnson, Katherine Whitaker
|
Spatial Variation in Strong Line Ratios and Physical Conditions in Two
Strongly-Lensed Galaxies at z~1.4
|
24 pages, including references, 6 tables, 17 figures, and appendix.
Submitted to ApJ June 19, 2020
| null |
10.3847/1538-4357/ac0257
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For studies of galaxy formation and evolution, one of the major benefits of
the James Webb Space Telescope is that space-based IFUs like those on its
NIRSpec and MIRI instruments will enable spatially resolved spectroscopy of
distant galaxies, including spectroscopy at the scale of individual
star-forming regions in galaxies that have been gravitationally lensed. In the
meantime, there is only a very small subset of lensed sources where work like
this is possible even with the Hubble Space Telescope's Wide Field Camera 3
infrared channel grisms. We examine two of these sources, SDSS J1723+3411 and
SDSS J2340+2947, using HST WFC3/IR grism data and supporting
spatially-unresolved spectroscopy from several ground-based instruments to
explore the size of spatial variations in observed strong emission line ratios
like O32, R23, which are sensitive to ionization parameter and metallicity, and
the Balmer decrement as an indicator of reddening. We find significant spatial
variation in the reddening and the reddening-corrected O32 and R23 values which
correspond to spreads of a few tenths of a dex in ionization parameter and
metallicity. We also find clear evidence of a negative radial gradient in star
formation in SDSS J2340+2947 and tentative evidence of one in SDSS J1723+3411,
though its star formation is quite asymmetric. Finally, we find that reddening
can vary enough spatially to make spatially-resolved reddening corrections
necessary in order to characterize gradients in line ratios and the physical
conditions inferred from them, necessitating the use of space-based IFUs for
future work on larger, more statistically robust samples.
|
[{'version': 'v1', 'created': 'Fri, 19 Jun 2020 21:10:02 GMT'}]
|
2021-08-04
|
[array(['Florian', 'Michael K.', ''], dtype=object)
array(['Rigby', 'Jane R.', ''], dtype=object)
array(['Acharyya', 'Ayan', ''], dtype=object)
array(['Sharon', 'Keren', ''], dtype=object)
array(['Gladders', 'Michael D.', ''], dtype=object)
array(['Kewley', 'Lisa', ''], dtype=object)
array(['Khullar', 'Gourav', ''], dtype=object)
array(['Gozman', 'Katya', ''], dtype=object)
array(['Brammer', 'Gabriel', ''], dtype=object)
array(['Momcheva', 'Ivelina', ''], dtype=object)
array(['Nicholls', 'David', ''], dtype=object)
array(['LaMassa', 'Stephanie', ''], dtype=object)
array(['Dahle', 'Hakon', ''], dtype=object)
array(['Bayliss', 'Matthew B.', ''], dtype=object)
array(['Wuyts', 'Eva', ''], dtype=object)
array(['Johnson', 'Traci', ''], dtype=object)
array(['Whitaker', 'Katherine', ''], dtype=object)]
|
18,876 |
1708.02300
|
Ramakanth Pasunuru
|
Ramakanth Pasunuru, Mohit Bansal
|
Reinforced Video Captioning with Entailment Rewards
|
EMNLP 2017 (9 pages)
| null | null | null |
cs.CL cs.AI cs.CV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Sequence-to-sequence models have shown promising improvements on the temporal
task of video captioning, but they optimize word-level cross-entropy loss
during training. First, using policy gradient and mixed-loss methods for
reinforcement learning, we directly optimize sentence-level task-based metrics
(as rewards), achieving significant improvements over the baseline, based on
both automatic metrics and human evaluation on multiple datasets. Next, we
propose a novel entailment-enhanced reward (CIDEnt) that corrects
phrase-matching based metrics (such as CIDEr) to only allow for
logically-implied partial matches and avoid contradictions, achieving further
significant improvements over the CIDEr-reward model. Overall, our
CIDEnt-reward model achieves the new state-of-the-art on the MSR-VTT dataset.
|
[{'version': 'v1', 'created': 'Mon, 7 Aug 2017 20:50:24 GMT'}]
|
2017-08-09
|
[array(['Pasunuru', 'Ramakanth', ''], dtype=object)
array(['Bansal', 'Mohit', ''], dtype=object)]
|
18,877 |
0707.2628
|
Chunyan Jiang
|
C. Y. Jiang, Y. P. Jing, A. Faltenbacher, W. P. Lin, Cheng Li
|
A fitting formula for the merger timescale of galaxies in hierarchical
clustering
|
16 pages, 14 figures, accepted for publication in ApJ, minor changes
in the last few sentences of the discussion
| null |
10.1086/526412
| null |
astro-ph
| null |
We study galaxy mergers using a high-resolution cosmological hydro/N-body
simulation with star formation, and compare the measured merger timescales with
theoretical predictions based on the Chandrasekhar formula. In contrast to
Navarro et al., our numerical results indicate, that the commonly used equation
for the merger timescale given by Lacey and Cole, systematically underestimates
the merger timescales for minor mergers and overestimates those for major
mergers. This behavior is partly explained by the poor performance of their
expression for the Coulomb logarithm, \ln (m_pri/m_sat). The two alternative
forms \ln (1+m_pri/m_sat) and 1/2\ln [1+(m_pri/m_sat)^2] for the Coulomb
logarithm can account for the mass dependence of merger timescale successfully,
but both of them underestimate the merger time scale by a factor 2. Since \ln
(1+m_pri/m_sat) represents the mass dependence slightly better we adopt this
expression for the Coulomb logarithm. Furthermore, we find that the dependence
of the merger timescale on the circularity parameter \epsilon is much weaker
than the widely adopted power-law \epsilon^{0.78}, whereas
0.94*{\epsilon}^{0.60}+0.60 provides a good match to the data. Based on these
findings, we present an accurate and convenient fitting formula for the merger
timescale of galaxies in cold dark matter models.
|
[{'version': 'v1', 'created': 'Wed, 18 Jul 2007 09:06:16 GMT'}
{'version': 'v2', 'created': 'Sat, 10 Nov 2007 15:01:00 GMT'}
{'version': 'v3', 'created': 'Fri, 30 Nov 2007 11:30:12 GMT'}]
|
2009-11-13
|
[array(['Jiang', 'C. Y.', ''], dtype=object)
array(['Jing', 'Y. P.', ''], dtype=object)
array(['Faltenbacher', 'A.', ''], dtype=object)
array(['Lin', 'W. P.', ''], dtype=object)
array(['Li', 'Cheng', ''], dtype=object)]
|
18,878 |
1004.2236
|
Hai-Hu Wen
|
B. Zeng, G. Mu, H. Q. Luo, T. Xiang, H. Yang, L. Shan, C. Ren, I. I.
Mazin, P. C. Dai, H.-H. Wen
|
Anisotropic Structure of the Order Parameter in FeSe_{0.4}Te_{0.6}
Revealed by Angle Resolved Specific Heat
|
This paper has been withdrawn by the authors. This paper is replaced
by a new one appearing on 22 July 2010, arXiv.1007.3597. A mistake in
determining the angular positions of minima/maxima of C/T with respect to the
crystallographic axes in the original paper is corrected, together with the
new and repeatable data obtained from a new sample with much improved
quality. The new paper arXiv:1007.1007.3597 supersedes this paper
arXiv:1004.2236
| null | null | null |
cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The symmetry and structure of the superconducting gap in the Fe-based
superconductor are the central issue for understanding these novel materials.
So far the experimental data and theoretical models have been highly
controversial. Some experiments favor two or more constant or nearly-constant
gaps, others indicate strong anisotropy and yet others suggest gap zeros
("nodes"). Theoretical models also vary, suggesting that the absence or
presence of the nodes depends quantitatively on the model parameters. An
opinion that has gained substantial currency is that the gap structure, unlike
all other known superconductors, including cuprates, may be different in
different compounds within the same family. A unique method for addressing this
issue, one of the very few methods that are bulk and angle-resolved, calls for
measuring the electronic specific heat in a rotating magnetic field, as a
function of field orientation with respect to the crystallographic axes. In
this Communication we present the first such measurement for an Fe-based
high-Tc superconductor (FeBSC). We observed a fourfold oscillation of the
specific heat as a function of the in-plane magnetic field direction, which
allowed us to identify the locations of the gap minima (or nodes) on the Fermi
surface. Our results place severe restrictions on the gap structure and on the
existing theoretical models.
|
[{'version': 'v1', 'created': 'Tue, 13 Apr 2010 17:45:44 GMT'}
{'version': 'v2', 'created': 'Wed, 21 Jul 2010 15:44:17 GMT'}
{'version': 'v3', 'created': 'Thu, 22 Jul 2010 00:53:33 GMT'}]
|
2010-07-23
|
[array(['Zeng', 'B.', ''], dtype=object)
array(['Mu', 'G.', ''], dtype=object)
array(['Luo', 'H. Q.', ''], dtype=object)
array(['Xiang', 'T.', ''], dtype=object)
array(['Yang', 'H.', ''], dtype=object)
array(['Shan', 'L.', ''], dtype=object)
array(['Ren', 'C.', ''], dtype=object)
array(['Mazin', 'I. I.', ''], dtype=object)
array(['Dai', 'P. C.', ''], dtype=object)
array(['Wen', 'H. -H.', ''], dtype=object)]
|
18,879 |
1804.02072
|
Cheng-Ming Chen
|
Cheng-Ming Chen, Vladimir Volski, Liesbet Van der Perre, Guy A. E.
Vandenbosch and Sofie Pollin
|
Finite Large Antenna Arrays for Massive MIMO: Characterization and
System Impact
|
9 pages, IEEE Transactions on Antennas and Propagation
|
IEEE Transactions on Antennas and Propagation Volume: 65 Issue: 12
pgs 6712 - 6720 (2017)
|
10.1109/TAP.2017.2754444
| null |
eess.SP
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Massive MIMO is considered a key technology for 5G. Various studies analyze
the impact of the number of antennas, relying on channel properties only and
assuming uniform antenna gains in very large arrays. In this paper, we
investigate the impact of mutual coupling and edge effects on the gain pattern
variation in the array. Our analysis focuses on the comparison of patch
antennas versus dipoles, representative for the antennas typically used in
massive MIMO experiments today. Through simulations and measurements, we show
that the finite patch array has a lower gain pattern variation compared with a
dipole array. The impact of a large gain pattern variation on the massive MIMO
system is that not all antennas contribute equally for all users, and the
effective number of antennas seen for a single user is reduced. We show that
the effect of this at system level is a decreased rate for all users for the
zero-forcing MIMO detector, up to 20% for the patch array and 35% for the
dipole array. The maximum ratio combining on the other hand, introduces user
unfairness.
|
[{'version': 'v1', 'created': 'Thu, 5 Apr 2018 22:28:51 GMT'}]
|
2018-04-09
|
[array(['Chen', 'Cheng-Ming', ''], dtype=object)
array(['Volski', 'Vladimir', ''], dtype=object)
array(['Van der Perre', 'Liesbet', ''], dtype=object)
array(['Vandenbosch', 'Guy A. E.', ''], dtype=object)
array(['Pollin', 'Sofie', ''], dtype=object)]
|
18,880 |
hep-ex/0507085
|
Francesco Gallo
|
The BABAR Collaboration, B. Aubert, et al
|
Measurement of the B0 --> pi- l+ nu and B+ --> pi0 l+ nu Branching
Fractions and Determination of |V_ub| in Y(4S) Events Tagged by a Fully
Reconstructed B Meson
|
20 pages, 11 postscript figures, submitted to HEP 2005
| null | null |
BABAR-CONF-05/17, SLAC-PUB-11369
|
hep-ex
| null |
We report preliminary measurements of the charmless exclusive semileptonic
branching fractions of the B0 --> pi- l+ nu and B+ --> pi0 l+ nu decays, based
on 211 fb-1 of data collected at the Y(4S) resonance by the BABAR detector. In
events in which the decay of one B meson to a hadronic final state is fully
reconstructed, the semileptonic decay of the second B meson is identified by
the detection of a charged lepton and a pion. We measure the partial branching
fractions for B0 --> pi- l+ nu and B+ --> pi0 l+ nu in three regions of the
invariant mass squared of the lepton pair, and we obtain the total branching
fractions BF(B0 --> pi- l+ nu) = (1.14 +/- 0.27(stat) +/- 0.17(syst)) x 10^-4
and BF(B+ --> pi0 l+ nu) = (0.86 +/- 0.22(stat) +/- 0.11(syst)) x 10^-4. Using
isospin symmetry, we measure the combined total branching fraction BF(B0 -->
pi- l+ nu) = (1.28 +/- 0.23(stat) +/- 0.16(syst)) x 10^-4. Theoretical
predictions of the form-factor are used to determine the magnitude of the
Cabibbo-Kobayashi-Maskawa matrix element |V_ub| = (3.7 +/- 0.3(stat) +/-
0.2(syst) +0.8-0.5(FF)) x 10^-3, where the last error is due to the form-factor
normalization.
|
[{'version': 'v1', 'created': 'Tue, 19 Jul 2005 18:44:14 GMT'}
{'version': 'v2', 'created': 'Wed, 3 Aug 2005 22:29:33 GMT'}]
|
2007-05-23
|
[array(['The BABAR Collaboration', '', ''], dtype=object)
array(['Aubert', 'B.', ''], dtype=object)]
|
18,881 |
hep-ph/0305150
|
Eugene Levin
|
S. Bondarenko, M. Kozlov and E. Levin (Tel Aviv U.)
|
QCD Saturation in the Semi-classical Approach
|
41 pp. 19 figures in eps files
|
Nucl.Phys.A727:139-178,2003
|
10.1016/j.nuclphysa.2003.07.015
|
TAUP 2732-2003
|
hep-ph
| null |
In this paper the semi-classical approach to the solution of non-linear
evolution equation is developed. We found the solution in the entire kinematic
region to the non-linear evolution equation that governs the dynamics in the
high parton density QCD. The large impact parameter ($b_t$) behavior of the
solution is discussed as well as the way how to include the non-perturbative
QCD corrections in this region of $b_t$. The geometrical scaling behavior and
other properties of the solution in the saturation (Color Glass Condensate)
kinematic domain are analyzed. We obtain the asymptotic behavior for the
physical observables and found the unitarity bounds for them.
|
[{'version': 'v1', 'created': 'Wed, 14 May 2003 10:13:47 GMT'}
{'version': 'v2', 'created': 'Thu, 24 Jul 2003 12:53:46 GMT'}]
|
2008-12-22
|
[array(['Bondarenko', 'S.', '', 'Tel Aviv U.'], dtype=object)
array(['Kozlov', 'M.', '', 'Tel Aviv U.'], dtype=object)
array(['Levin', 'E.', '', 'Tel Aviv U.'], dtype=object)]
|
18,882 |
1010.3924
|
Serge Huant
|
F. Martins, B. Hackens, H. Sellier, P. Liu, M.G. Pala, S. Baltazar, L.
Desplanque, X. Wallart, V. Bayot and S. Huant
|
Scanning-gate microscopy of semiconductor nanostructures: an overview
|
Invited talk by SH at 39th "Jaszowiec" International School and
Conference on the Physics of Semiconductors, Krynica-Zdroj, Poland, June 2010
|
Acta Phys. Polon. A 119, 569 (2011)
| null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents an overview of scanning-gate microscopy applied to the
imaging of electron transport through buried semiconductor nanostructures.
After a brief description of the technique and of its possible artifacts, we
give a summary of some of its most instructive achievements found in the
literature and we present an updated review of our own research. It focuses on
the imaging of GaInAs-based quantum rings both in the low magnetic field
Aharonov-Bohm regime and in the high-field quantum Hall regime. In all of the
given examples, we emphasize how a local-probe approach is able to shed new, or
complementary, light on transport phenomena which are usually studied by means
of macroscopic conductance measurements.
|
[{'version': 'v1', 'created': 'Tue, 19 Oct 2010 14:23:38 GMT'}]
|
2011-04-13
|
[array(['Martins', 'F.', ''], dtype=object)
array(['Hackens', 'B.', ''], dtype=object)
array(['Sellier', 'H.', ''], dtype=object)
array(['Liu', 'P.', ''], dtype=object)
array(['Pala', 'M. G.', ''], dtype=object)
array(['Baltazar', 'S.', ''], dtype=object)
array(['Desplanque', 'L.', ''], dtype=object)
array(['Wallart', 'X.', ''], dtype=object)
array(['Bayot', 'V.', ''], dtype=object)
array(['Huant', 'S.', ''], dtype=object)]
|
18,883 |
physics/0401004
|
Valery P. Dmitriyev
|
Valery P. Dmitriyev
|
Mechanics of Schrodinger mechanics
|
7 pages including 3 figures
| null | null | null |
physics.ed-ph physics.gen-ph
| null |
Small perturbations of ideal turbulence obey the Schrodinger equation.
Microscopically, the perturbation of turbulence corresponds to formation of
small amplitude helices on straight vortex filaments. A helix behaves in the
vorticity field of the fluid as a spin particle in the Stern-Gerlach
experiment. Taking into account elastic properties of the filament leads to the
Klein-Gordon equation.
|
[{'version': 'v1', 'created': 'Fri, 2 Jan 2004 15:41:41 GMT'}]
|
2007-05-23
|
[array(['Dmitriyev', 'Valery P.', ''], dtype=object)]
|
18,884 |
1108.4770
|
Ivan Zuzak
|
Ivan Zuzak (1), Marko Ivankovic (2), Ivan Budiselic (1) ((1) School of
Electrical Engineering and Computing, University of Zagreb, Croatia, (2)
Google Inc., Zurich, Switzerland)
|
A Classification Framework for Web Browser Cross-Context Communication
|
23 pages, 5 figures. This paper contains a more systematic research
of cross-context communication systems listed on the pmrpc project website,
see http://code.google.com/p/pmrpc/wiki/IWCProjects
| null | null | null |
cs.SE
|
http://creativecommons.org/licenses/by/3.0/
|
Demand for more advanced Web applications is the driving force behind Web
browser evolution. Recent requirements for Rich Internet Applications, such as
mashing-up data and background processing, are emphasizing the need for
building and executing Web applications as a coordination of browser execution
contexts. Since development of such Web applications depends on cross-context
communication, many browser primitives and client-side frameworks have been
developed to support this communication. In this paper we present a
systematization of cross-context communication systems for Web browsers. Based
on an analysis of previous research, requirements for modern Web applications
and existing systems, we extract a framework for classifying cross-context
communica-tion systems. Using the framework, we evaluate the current ecosystem
of cross-context communication and outline directions for future Web research
and engineering.
|
[{'version': 'v1', 'created': 'Wed, 24 Aug 2011 07:35:21 GMT'}]
|
2011-08-25
|
[array(['Zuzak', 'Ivan', ''], dtype=object)
array(['Ivankovic', 'Marko', ''], dtype=object)
array(['Budiselic', 'Ivan', ''], dtype=object)]
|
18,885 |
astro-ph/9708270
|
Sergey I. Kuznetsov
|
S.Kuznetsov, M.Gilfanov, E.Churazov, R.Sunyaev, I.Korel, N.Khavenson,
A.Dyachkov, I.Chulkov, J.Ballet, P.Laurent, M.Vargas, A.Goldwurm, J.P.Roques,
E.Jourdain, L.Bouchet, V.Borrel
|
Properties Of The Hard X-ray Radiation From The Black Hole Candidates:
Cygnus X-1 And 1E1740.7-2942
|
6 pages, 7 figures, uses mn.sty, epsf.sty, psfig.tex; Accepted for
publication in MNRAS; Also available at
http://hea.iki.rssi.ru/~sik/PAPERS/mnras97.ps.gz (gzipped PostScript)
| null |
10.1093/mnras/292.3.651
| null |
astro-ph
| null |
The entire dataset of the GRANAT/SIGMA observations of Cyg X-1 and
1E1740.7-2942 in 1990-1994 was analyzed in order to search for correlations
between primary observational characteristics of the hard X-ray (40-200 keV)
emission - hard X-ray luminosity, hardness of the spectrum (quantified in terms
of the best-fit thermal bremsstrahlung temperature kT) and the RMS of
short-term flux variations. Although no strict point-to-point correlations were
detected certain general tendencies are evident. It was found that for Cyg X-1
the spectral hardness is in general positively correlated with relative
amplitude of short-term variability. The correlation of similar kind was found
for X-ray transient GRO J0422+32 (X-ray Nova Persei 1992). For both sources an
approximate correlation between kT and L_X was found. At low hard X-ray
luminosity - below 10E37 erg/sec - kT increases with L_X. At higher luminosity
the spectral hardness depends weaker or does not depend at all on the hard
X-ray luminosity. The low luminosity end of these approximate correlations (low
kT and low RMS) corresponds to extended episodes of very low hard X-ray flux
occurred during SIGMA observations.
|
[{'version': 'v1', 'created': 'Fri, 29 Aug 1997 11:49:47 GMT'}]
|
2015-06-24
|
[array(['Kuznetsov', 'S.', ''], dtype=object)
array(['Gilfanov', 'M.', ''], dtype=object)
array(['Churazov', 'E.', ''], dtype=object)
array(['Sunyaev', 'R.', ''], dtype=object)
array(['Korel', 'I.', ''], dtype=object)
array(['Khavenson', 'N.', ''], dtype=object)
array(['Dyachkov', 'A.', ''], dtype=object)
array(['Chulkov', 'I.', ''], dtype=object)
array(['Ballet', 'J.', ''], dtype=object)
array(['Laurent', 'P.', ''], dtype=object)
array(['Vargas', 'M.', ''], dtype=object)
array(['Goldwurm', 'A.', ''], dtype=object)
array(['Roques', 'J. P.', ''], dtype=object)
array(['Jourdain', 'E.', ''], dtype=object)
array(['Bouchet', 'L.', ''], dtype=object)
array(['Borrel', 'V.', ''], dtype=object)]
|
18,886 |
1906.00752
|
Peter Lindqvist
|
Peter Lindqvist
|
A test against trend in random sequences
|
This is essentially a revision of REPORT-MAT-A234, Helsinki
University of Technology 1986. (Some details are from REPORT-MAT-A131
(1978).)
| null | null | null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a modification of Kendall's tau-test, replacing his permutations of
n different numbers by sequences of length n, where repetition is allowed. In
particular, binary sequences are included. Random sequences can be tested.
|
[{'version': 'v1', 'created': 'Mon, 3 Jun 2019 12:38:49 GMT'}]
|
2019-06-04
|
[array(['Lindqvist', 'Peter', ''], dtype=object)]
|
18,887 |
2006.12598
|
Qian Zhang
|
Qian Zhang and Yilin Zheng and Jean Honorio
|
Meta Learning for Support Recovery in High-dimensional Precision Matrix
Estimation
| null |
International Conference on Machine Learning (ICML), 2021
| null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we study meta learning for support (i.e., the set of non-zero
entries) recovery in high-dimensional precision matrix estimation where we
reduce the sufficient sample complexity in a novel task with the information
learned from other auxiliary tasks. In our setup, each task has a different
random true precision matrix, each with a possibly different support. We assume
that the union of the supports of all the true precision matrices (i.e., the
true support union) is small in size. We propose to pool all the samples from
different tasks, and \emph{improperly} estimate a single precision matrix by
minimizing the $\ell_1$-regularized log-determinant Bregman divergence. We show
that with high probability, the support of the \emph{improperly} estimated
single precision matrix is equal to the true support union, provided a
sufficient number of samples per task $n \in O((\log N)/K)$, for
$N$-dimensional vectors and $K$ tasks. That is, one requires less samples per
task when more tasks are available. We prove a matching information-theoretic
lower bound for the necessary number of samples, which is $n \in \Omega((\log
N)/K)$, and thus, our algorithm is minimax optimal. Then for the novel task, we
prove that the minimization of the $\ell_1$-regularized log-determinant Bregman
divergence with the additional constraint that the support is a subset of the
estimated support union could reduce the sufficient sample complexity of
successful support recovery to $O(\log(|S_{\text{off}}|))$ where
$|S_{\text{off}}|$ is the number of off-diagonal elements in the support union
and is much less than $N$ for sparse matrices. We also prove a matching
information-theoretic lower bound of $\Omega(\log(|S_{\text{off}}|))$ for the
necessary number of samples. Synthetic experiments validate our theory.
|
[{'version': 'v1', 'created': 'Mon, 22 Jun 2020 20:24:52 GMT'}
{'version': 'v2', 'created': 'Sun, 21 Feb 2021 17:14:04 GMT'}]
|
2021-07-07
|
[array(['Zhang', 'Qian', ''], dtype=object)
array(['Zheng', 'Yilin', ''], dtype=object)
array(['Honorio', 'Jean', ''], dtype=object)]
|
18,888 |
2107.13639
|
Wentao Wang
|
Wentao Wang, Han Xu, Xiaorui Liu, Yaxin Li, Bhavani Thuraisingham,
Jiliang Tang
|
Imbalanced Adversarial Training with Reweighting
| null | null | null | null |
cs.LG cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Adversarial training has been empirically proven to be one of the most
effective and reliable defense methods against adversarial attacks. However,
almost all existing studies about adversarial training are focused on balanced
datasets, where each class has an equal amount of training examples. Research
on adversarial training with imbalanced training datasets is rather limited. As
the initial effort to investigate this problem, we reveal the facts that
adversarially trained models present two distinguished behaviors from naturally
trained models in imbalanced datasets: (1) Compared to natural training,
adversarially trained models can suffer much worse performance on
under-represented classes, when the training dataset is extremely imbalanced.
(2) Traditional reweighting strategies may lose efficacy to deal with the
imbalance issue for adversarial training. For example, upweighting the
under-represented classes will drastically hurt the model's performance on
well-represented classes, and as a result, finding an optimal reweighting value
can be tremendously challenging. In this paper, to further understand our
observations, we theoretically show that the poor data separability is one key
reason causing this strong tension between under-represented and
well-represented classes. Motivated by this finding, we propose Separable
Reweighted Adversarial Training (SRAT) to facilitate adversarial training under
imbalanced scenarios, by learning more separable features for different
classes. Extensive experiments on various datasets verify the effectiveness of
the proposed framework.
|
[{'version': 'v1', 'created': 'Wed, 28 Jul 2021 20:51:36 GMT'}]
|
2021-07-30
|
[array(['Wang', 'Wentao', ''], dtype=object)
array(['Xu', 'Han', ''], dtype=object)
array(['Liu', 'Xiaorui', ''], dtype=object)
array(['Li', 'Yaxin', ''], dtype=object)
array(['Thuraisingham', 'Bhavani', ''], dtype=object)
array(['Tang', 'Jiliang', ''], dtype=object)]
|
18,889 |
1008.0168
|
Seyed Hossein Hendi
|
Seyed Hossein Hendi
|
Rotating Black Branes in the presence of nonlinear electromagnetic field
|
7 pages, 5 figures, to appear in EPJC
|
Eur.Phys.J.C69:281-288,2010
|
10.1140/epjc/s10052-010-1359-6
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we consider a class of gravity whose action represents itself
as a sum of the usual Einstein-Hilbert action with cosmological constant and an
$U(1)$ gauge field for which the action is given by a power of the Maxwell
invariant. We present a class of the rotating black branes with Ricci flat
horizon and show that the presented solutions may be interpreted as black brane
solutions with two event horizons, extreme black hole and naked singularity
provided the parameters of the solutions are chosen suitably. We investigate
the properties of the solutions and find that for the special values of the
nonlinear parameter, the solutions are not asymptotically anti-deSitter. At
last, we obtain the conserved quantities of the rotating black branes and find
that the nonlinear source effects on the electric field, the behavior of
spacetime, type of singularity and other quantities.
|
[{'version': 'v1', 'created': 'Sun, 1 Aug 2010 12:09:32 GMT'}]
|
2010-10-27
|
[array(['Hendi', 'Seyed Hossein', ''], dtype=object)]
|
18,890 |
0807.4098
|
Marco Billo'
|
M. Billo', L. Ferro, M. Frau, F. Fucito, A. Lerda and J. F. Morales
|
Non-perturbative effective interactions from fluxes
|
37 pages, 7 figures. Final version published on JHEP. Section 4
modified in several points regarding string corrections in absence of fluxes;
in particular, section 4.3 is removed. Some other minor changes and two
references added
|
JHEP 12 (2008) 102
|
10.1088/1126-6708/2008/12/102
|
DFTT/20/2008, ROM2F/2008/20, LPTENS 08/41
|
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Motivated by possible implications on the problem of moduli stabilization and
other phenomenological aspects, we study D-brane instanton effects in flux
compactifications. We focus on a local model and compute non-perturbative
interactions generated by gauge and stringy instantons in a N = 1 quiver theory
with gauge group U(N_0) x U(N_1) and matter in the bifundamentals. This model
is engineered with fractional D3-branes at a C^3/(Z_2 x Z_2) singularity, and
its non-perturbative sectors are described by introducing fractional
D-instantons. We find a rich variety of instanton-generated F- and D-term
interactions, ranging from superpotentials and Beasley-Witten like
multi-fermion terms to non-supersymmetric flux-induced instanton interactions.
|
[{'version': 'v1', 'created': 'Fri, 25 Jul 2008 13:37:56 GMT'}
{'version': 'v2', 'created': 'Mon, 29 Sep 2008 07:49:18 GMT'}
{'version': 'v3', 'created': 'Tue, 23 Dec 2008 09:30:48 GMT'}]
|
2008-12-23
|
[array(["Billo'", 'M.', ''], dtype=object)
array(['Ferro', 'L.', ''], dtype=object)
array(['Frau', 'M.', ''], dtype=object)
array(['Fucito', 'F.', ''], dtype=object)
array(['Lerda', 'A.', ''], dtype=object)
array(['Morales', 'J. F.', ''], dtype=object)]
|
18,891 |
2302.04799
|
Damir Yeliussizov
|
Damir Yeliussizov
|
Bounds on the number of higher-dimensional partitions
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We establish some bounds on the number of higher-dimensional partitions by
volume. In particular, we give bounds via vector partitions and MacMahon's
numbers.
|
[{'version': 'v1', 'created': 'Thu, 9 Feb 2023 17:47:19 GMT'}]
|
2023-02-10
|
[array(['Yeliussizov', 'Damir', ''], dtype=object)]
|
18,892 |
1405.3618
|
Odd Erik Garcia
|
D. S. Sortland and O. E. Garcia
|
Charged particle motion in weakly varying electromagnetic fields: A
multi-scale approach
|
20 pages, 3 figures, tutorial
| null | null | null |
physics.plasm-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The motion of charged particles in weakly varying electromagnetic fields is
described using a perturbation method. This provides a systematic and
physically transparent description of the particle motion on fast and slow
spatio-temporal scales, associated with gyration and drift motions,
respectively. A detailed discussion is given of the guiding center concept and
the non-inertial frame of reference. An algebraic expression is obtained for
the drift motion across the magnetic field, while a differential equation
describes the particle motion along the field. The fictitious forces and
associated energy transfer between gyration and drift motion parallel and
perpendicular to the magnetic field are described. The relation between
conservation of magnetic moment and angular momentum is elucidated.
|
[{'version': 'v1', 'created': 'Wed, 14 May 2014 18:47:34 GMT'}]
|
2014-05-15
|
[array(['Sortland', 'D. S.', ''], dtype=object)
array(['Garcia', 'O. E.', ''], dtype=object)]
|
18,893 |
2112.05790
|
Sergey Meleshko V
|
S.V. Meleshko
|
Group classification of the two-dimensional Green-Naghdi equations with
a time dependent bottom topography
|
13 pages, 3 tables
| null |
10.1134/S0021894422060086
| null |
physics.flu-dyn math-ph math.MP
|
http://creativecommons.org/licenses/by/4.0/
|
The two-dimensional Green-Naghdi equations with uneven bottom topography are
studied in this paper. The function defining the bottom topography can be
dependent on time. Group classification of these equations with respect to the
function describing the topography of the bottom is performed in the paper. The
algebraic approach used for the analysis of the classifying equations.
|
[{'version': 'v1', 'created': 'Thu, 9 Dec 2021 09:11:01 GMT'}]
|
2023-03-22
|
[array(['Meleshko', 'S. V.', ''], dtype=object)]
|
18,894 |
1503.02364
|
Lifeng Shang
|
Lifeng Shang, Zhengdong Lu, Hang Li
|
Neural Responding Machine for Short-Text Conversation
|
accepted as a full paper at ACL 2015
| null | null | null |
cs.CL cs.AI cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose Neural Responding Machine (NRM), a neural network-based response
generator for Short-Text Conversation. NRM takes the general encoder-decoder
framework: it formalizes the generation of response as a decoding process based
on the latent representation of the input text, while both encoding and
decoding are realized with recurrent neural networks (RNN). The NRM is trained
with a large amount of one-round conversation data collected from a
microblogging service. Empirical study shows that NRM can generate
grammatically correct and content-wise appropriate responses to over 75% of the
input text, outperforming state-of-the-arts in the same setting, including
retrieval-based and SMT-based models.
|
[{'version': 'v1', 'created': 'Mon, 9 Mar 2015 02:54:29 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Apr 2015 02:28:58 GMT'}]
|
2015-04-28
|
[array(['Shang', 'Lifeng', ''], dtype=object)
array(['Lu', 'Zhengdong', ''], dtype=object)
array(['Li', 'Hang', ''], dtype=object)]
|
18,895 |
1903.02556
|
Joshua Lin
|
Joshua Lin, Wahid Bhimji, Benjamin Nachman
|
Machine Learning Templates for QCD Factorization in the Search for
Physics Beyond the Standard Model
|
17 pages, 6 figures. v2: Updated to journal version
| null |
10.1007/JHEP05(2019)181
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
High-multiplicity all-hadronic final states are an important, but difficult
final state for searching for physics beyond the Standard Model. A powerful
search method is to look for large jets with accidental substructure due to
multiple hard partons falling within a single jet. One way for estimating the
background in this search is to exploit an approximate factorization in quantum
chromodynamics whereby the jet mass distribution is determined only by its
kinematic properties. Traditionally, this approach has been executed using
histograms constructed in a background-rich region. We propose a new approach
based on Generative Adversarial Networks (GANs). These neural network
approaches are naturally unbinned and can be readily conditioned on multiple
jet properties. In addition to using vanilla GANs for this purpose, a
modification to the traditional WGAN approach has been investigated where
weight clipping is replaced with a naturally compact set (in this case, the
circle). Both the vanilla and modified WGAN approaches significantly outperform
the histogram method, especially when modeling the dependence on features not
used in the histogram construction. These results can be useful for enhancing
the sensitivity of LHC searches to high-multiplicity final states involving
many quarks and gluons and serve as a useful benchmark where GANs may have
immediate benefit to the HEP community.
|
[{'version': 'v1', 'created': 'Wed, 6 Mar 2019 19:00:00 GMT'}
{'version': 'v2', 'created': 'Mon, 27 May 2019 08:05:50 GMT'}]
|
2019-06-26
|
[array(['Lin', 'Joshua', ''], dtype=object)
array(['Bhimji', 'Wahid', ''], dtype=object)
array(['Nachman', 'Benjamin', ''], dtype=object)]
|
18,896 |
math/0610285
|
Benoit Collins
|
Benoit Collins and Piotr Sniady
|
Representations of Lie groups and random matrices
| null |
Trans. Amer. Math. Soc. 361 (2009), no. 6, 3269--3287
|
10.1090/S0002-9947-09-04624-8
| null |
math.PR math.RT
| null |
We study the asymptotics of representations of a fixed compact Lie group. We
prove that the limit behavior of a sequence of such representations can be
described in terms of certain random matrices; in particular operations on
representations (for example: tensor product, restriction to a subgroup)
correspond to some natural operations on random matrices (respectively: sum of
independent random matrices, taking the corners of a random matrix). Our method
of proof is to treat the canonical block matrix associated to a representation
as a random matrix with non-commutative entries.
|
[{'version': 'v1', 'created': 'Mon, 9 Oct 2006 13:39:27 GMT'}
{'version': 'v2', 'created': 'Sun, 26 Aug 2007 06:10:22 GMT'}]
|
2009-11-06
|
[array(['Collins', 'Benoit', ''], dtype=object)
array(['Sniady', 'Piotr', ''], dtype=object)]
|
18,897 |
astro-ph/9710146
|
Tim Davidge--Canadian Project Astronomer
|
T. J. Davidge, D. A. Simons, F. Rigaut, R. Doyon, & D. Crampton
|
The Stellar Content Near the Galactic Center
|
34 pages, including 12 figures
| null |
10.1086/118668
| null |
astro-ph
| null |
High angular resolution J, H, K, and L' images are used to investigate the
stellar content within 6 arcsec of SgrA*. The data, which are complete to K ~
16, are the deepest multicolor observations of the region published to date.
|
[{'version': 'v1', 'created': 'Tue, 14 Oct 1997 23:48:14 GMT'}]
|
2009-10-30
|
[array(['Davidge', 'T. J.', ''], dtype=object)
array(['Simons', 'D. A.', ''], dtype=object)
array(['Rigaut', 'F.', ''], dtype=object)
array(['Doyon', 'R.', ''], dtype=object)
array(['Crampton', 'D.', ''], dtype=object)]
|
18,898 |
1512.06068
|
Raquel Queiroz
|
Raquel Queiroz, Gabriel Landolt, Stefan Muff, Bartosz Slomski,
Thorsten Schmitt, Vladimir N. Strocov, Jianli Mi, Bo Brummerstedt Iversen,
Philip Hofmann, J\"urg Osterwalder, Andreas P. Schnyder, and J. Hugo Dil
|
Sputtering induced re-emergence of the topological surface state in
Bi$_2$Se$_3$
|
5+2 pages. 4 figures
|
Phys. Rev. B 93, 165409 (2016)
|
10.1103/PhysRevB.93.165409
| null |
cond-mat.mes-hall cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the fate of the surface states of Bi$_2$Se$_3$ under disorder with
strength larger than the bulk gap, caused by neon sputtering and nonmagnetic
adsorbates. We find that neon sputtering introduces strong but dilute defects,
which can be modeled by a unitary impurity distribution, whereas adsorbates,
such as water vapor or carbon monoxide, are best described by Gaussian
disorder. Remarkably, these two disorder types have a dramatically different
effect on the surface states. Our soft x-ray ARPES measurements combined with
numerical simulations show that unitary surface disorder pushes the Dirac state
to inward quintuplet layers, burying it below an insulating surface layer. As a
consequence, the surface spectral function becomes weaker, but retains its
quasiparticle peak. This is in contrast to Gaussian disorder, which smears out
the quasiparticle peak completely. At the surface of Bi$_2$Se$_3$, the effects
of Gaussian disorder can be reduced by removing surface adsorbates using neon
sputtering, which, however, introduces unitary scatterers. Since unitary
disorder has a weaker effect than Gaussian disorder, the ARPES signal of the
Dirac surface state becomes sharper upon sputtering.
|
[{'version': 'v1', 'created': 'Fri, 18 Dec 2015 18:36:58 GMT'}]
|
2016-10-25
|
[array(['Queiroz', 'Raquel', ''], dtype=object)
array(['Landolt', 'Gabriel', ''], dtype=object)
array(['Muff', 'Stefan', ''], dtype=object)
array(['Slomski', 'Bartosz', ''], dtype=object)
array(['Schmitt', 'Thorsten', ''], dtype=object)
array(['Strocov', 'Vladimir N.', ''], dtype=object)
array(['Mi', 'Jianli', ''], dtype=object)
array(['Iversen', 'Bo Brummerstedt', ''], dtype=object)
array(['Hofmann', 'Philip', ''], dtype=object)
array(['Osterwalder', 'Jürg', ''], dtype=object)
array(['Schnyder', 'Andreas P.', ''], dtype=object)
array(['Dil', 'J. Hugo', ''], dtype=object)]
|
18,899 |
math/0108075
|
Margaret Symington
|
Margaret Symington
|
Generalized symplectic rational blowdowns
|
Version 2: Correction of a minor error pointed out by an anonymous
referee, correction of typos and improvement of exposition. Published by
Algebraic and Geometric Topology at
http://www.maths.warwick.ac.uk/agt/AGTVol1/agt-1-26.abs.html
|
Algebr. Geom. Topol. 1 (2001) 503-518
|
10.2140/agt.2001.1.503
| null |
math.SG math.GT
| null |
We prove that the generalized rational blowdown, a surgery on smooth
4-manifolds, can be performed in the symplectic category.
|
[{'version': 'v1', 'created': 'Fri, 10 Aug 2001 16:37:11 GMT'}
{'version': 'v2', 'created': 'Tue, 25 Sep 2001 13:10:49 GMT'}]
|
2014-10-01
|
[array(['Symington', 'Margaret', ''], dtype=object)]
|
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