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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2,100 |
2210.08951
|
Theo Costain
|
Theo W. Costain, Victor Adrian Prisacariu
|
Approximating Continuous Convolutions for Deep Network Compression
|
BMVC 2022
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present ApproxConv, a novel method for compressing the layers of a
convolutional neural network. Reframing conventional discrete convolution as
continuous convolution of parametrised functions over space, we use functional
approximations to capture the essential structures of CNN filters with fewer
parameters than conventional operations. Our method is able to reduce the size
of trained CNN layers requiring only a small amount of fine-tuning. We show
that our method is able to compress existing deep network models by half whilst
losing only 1.86% accuracy. Further, we demonstrate that our method is
compatible with other compression methods like quantisation allowing for
further reductions in model size.
|
[{'version': 'v1', 'created': 'Mon, 17 Oct 2022 11:41:26 GMT'}]
|
2022-10-18
|
[array(['Costain', 'Theo W.', ''], dtype=object)
array(['Prisacariu', 'Victor Adrian', ''], dtype=object)]
|
2,101 |
2010.02302
|
Aleksandr Ermolov
|
Aleksandr Ermolov, Nicu Sebe
|
Latent World Models For Intrinsically Motivated Exploration
|
NeurIPS 2020 Spotlight; Code is publicly available at
https://github.com/htdt/lwm
| null | null | null |
cs.LG cs.AI stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work we consider partially observable environments with sparse
rewards. We present a self-supervised representation learning method for
image-based observations, which arranges embeddings respecting temporal
distance of observations. This representation is empirically robust to
stochasticity and suitable for novelty detection from the error of a predictive
forward model. We consider episodic and life-long uncertainties to guide the
exploration. We propose to estimate the missing information about the
environment with the world model, which operates in the learned latent space.
As a motivation of the method, we analyse the exploration problem in a tabular
Partially Observable Labyrinth. We demonstrate the method on image-based hard
exploration environments from the Atari benchmark and report significant
improvement with respect to prior work. The source code of the method and all
the experiments is available at https://github.com/htdt/lwm.
|
[{'version': 'v1', 'created': 'Mon, 5 Oct 2020 19:47:04 GMT'}]
|
2020-10-07
|
[array(['Ermolov', 'Aleksandr', ''], dtype=object)
array(['Sebe', 'Nicu', ''], dtype=object)]
|
2,102 |
2306.15409
|
Nicolas Cherroret
|
Nicolas Cherroret
|
Dynamical phase transition of light in time-varying nonlinear dispersive
media
|
Comments welcome
| null | null | null |
physics.optics cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We demonstrate the existence of a prethermal dynamical phase transition (DPT)
for fluctuating optical beams propagating in nonlinear dispersive media. The
DPT can be probed by suddenly changing in time the dispersion and nonlinearity
parameters of the medium (thus realizing a "temporal interface"), a procedure
that emulates a quench in a massive $\varphi^4$ model. Above a critical value
of the quench identifying the transition, the fluctuating beam after the
temporal interface is characterized by a correlation length that diverges
algebraically at the transition. Below the critical quench, the beam exhibits
an algebraic relaxation and a self-similar scaling. Our analysis also reveals a
dimensional cross-over of the critical exponent, a characteristic feature of
the optical DPT.
|
[{'version': 'v1', 'created': 'Tue, 27 Jun 2023 12:09:47 GMT'}]
|
2023-06-28
|
[array(['Cherroret', 'Nicolas', ''], dtype=object)]
|
2,103 |
math/0605371
|
Yurii Nikonorov Gennadyevich
|
V.N. Berestovskii (Omsk Branch of Sobolev Institute of Mathematics SD
RAS), Yu.G. Nikonorov (Rubtsovsk Industrial Institute)
|
Killing vector fields of constant length on Riemannian manifolds
|
38 pages
| null | null | null |
math.DG
| null |
In this paper nontrivial Killing vector fields of constant length and
corresponding flows on smooth complete Riemannian manifolds are investigated.
It is proved that such a flow on symmetric space is free or induced by a free
isometric action of the circle $S^1$. The properties of the set of all points
with finite (infinite) period for general isometric flow on Riemannian
manifolds are described. It is shown that this flow is generated by an
effective almost free isometric action of the group $S^1$ if there are no
points of infinite or zero period. In the last case the set of periods is at
most countable and naturally generates an invariant stratification with closed
totally geodesic strata; the union of all regular orbits is open connected
everywhere dense subset of complete measure. Examples of unit Killing vector
fields generated by almost free but not free actions of $S^1$ on Riemannian
manifolds close in some sense to symmetric spaces are constructed; among them
are "almost round" odd-dimensional spheres, homogeneous (non simply connected)
Riemannian manifolds of constant positive sectional curvature, locally
Euclidean spaces, and unit vector bundles over Riemannian manifolds. Some
curvature restrictions on Riemannian manifolds admitting nontrivial Killing
vector fields of constant length are obtained. Some unsolved questions are
formulated.
|
[{'version': 'v1', 'created': 'Mon, 15 May 2006 02:59:08 GMT'}]
|
2007-05-23
|
[array(['Berestovskii', 'V. N.', '',
'Omsk Branch of Sobolev Institute of Mathematics SD\n RAS'],
dtype=object)
array(['Nikonorov', 'Yu. G.', '', 'Rubtsovsk Industrial Institute'],
dtype=object) ]
|
2,104 |
2203.06934
|
Yin Huang
|
Feng Yang, Hong Qiang Zhu, and Yin Huang
|
Analysis of the $\eta_1(1855)$ as a $K\bar{K}_1(1400)$ molecular state
|
accepted by NPA
| null |
10.1016/j.nuclphysa.2022.122571
| null |
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
In this work, we study the radiative and strong decay of $S$-wave
$K\bar{K}_1(1400)$ molecular state within the effective Lagrangians approach
and find the relation between the $K\bar{K}_1(1400)$ molecular state and the
newly observed $\eta_1(1855)$ state by comparing with the BESIII observation.
The prediction indicates that the decay width can reach up to
$182.97^{+2.79}_{-3.50}$ MeV, which can be confronted with the experimental
data. If the $\eta_1(1855)$ could be $S$-wave $K\bar{K}_1(1400)$ molecular
state, the $K\bar{K}^{*}\pi$ three-body decay provides the dominant
contribution, not the $\eta\eta^{'}$ channel found in the experiment. In
addition, the partial width for $\eta_1(1855)\to\gamma{}\phi$ can reach up to
$17.95^{+0.21}_{-0.43}$ KeV. Those results can be measured in future
experiments and used to test the nature of the $\eta_1(1855)$.
|
[{'version': 'v1', 'created': 'Mon, 14 Mar 2022 08:55:21 GMT'}
{'version': 'v2', 'created': 'Thu, 27 Oct 2022 14:58:35 GMT'}
{'version': 'v3', 'created': 'Mon, 14 Nov 2022 06:34:36 GMT'}]
|
2022-12-28
|
[array(['Yang', 'Feng', ''], dtype=object)
array(['Zhu', 'Hong Qiang', ''], dtype=object)
array(['Huang', 'Yin', ''], dtype=object)]
|
2,105 |
math/0107093
|
Claudio Gorodski
|
Claudio Gorodski
|
A class of complete embedded minimal submanifolds in noncompact
symmetric spaces
|
6 pages
| null | null | null |
math.DG
| null |
We show that a totally geodesic submanifold of a symmetric space satisfying
certain conditions admits an extension to a minimal submanifold of dimension
one higher, and we apply this result to construct new examples of complete
embedded minimal submanifolds in simply connected noncompact globally symmetric
spaces.
|
[{'version': 'v1', 'created': 'Thu, 12 Jul 2001 19:24:58 GMT'}]
|
2007-05-23
|
[array(['Gorodski', 'Claudio', ''], dtype=object)]
|
2,106 |
hep-th/9308016
|
Zaikov Raiko
|
Raiko P. Zaikov
|
Extended Nonabelian Symmetries for Free Fermionic Model
|
19 pages, HarvmacTeX, report IC/93/237
| null | null | null |
hep-th
| null |
The higher spin symmetry for both Dirac and Majorana massless free fermionic
field models are considered. An infinite Lie algebra which is a linear
realization of the higher spin extension of the cross products of the Virasoro
and affine Kac-Moody algebras is obtained. The corresponding current algebra is
closed which is not the case of annalogous current algebra in the WZNW model.
The gauging procedure for the higher spin symmetry is given also.
|
[{'version': 'v1', 'created': 'Thu, 5 Aug 1993 14:28:09 GMT'}]
|
2007-05-23
|
[array(['Zaikov', 'Raiko P.', ''], dtype=object)]
|
2,107 |
1507.01120
|
Gwena\"el Joret
|
Gwena\"el Joret and Piotr Micek and Veit Wiechert
|
Sparsity and dimension
|
v3: referees' comments incorporated
|
Combinatorica, 38/5:1129--1148, 2018
|
10.1007/s00493-017-3638-4
| null |
math.CO cs.DM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that posets of bounded height whose cover graphs belong to a fixed
class with bounded expansion have bounded dimension. Bounded expansion,
introduced by Ne\v{s}et\v{r}il and Ossona de Mendez as a model for sparsity in
graphs, is a property that is naturally satisfied by a wide range of graph
classes, from graph structure theory (graphs excluding a minor or a topological
minor) to graph drawing (e.g. graphs with bounded book thickness). Therefore,
our theorem generalizes a number of results including the most recent one for
posets of bounded height with cover graphs excluding a fixed graph as a
topological minor. We also show that the result is in a sense best possible, as
it does not extend to nowhere dense classes; in fact, it already fails for
cover graphs with locally bounded treewidth.
|
[{'version': 'v1', 'created': 'Sat, 4 Jul 2015 15:49:26 GMT'}
{'version': 'v2', 'created': 'Fri, 20 May 2016 14:59:21 GMT'}
{'version': 'v3', 'created': 'Mon, 9 Jan 2017 13:06:36 GMT'}]
|
2019-02-11
|
[array(['Joret', 'Gwenaël', ''], dtype=object)
array(['Micek', 'Piotr', ''], dtype=object)
array(['Wiechert', 'Veit', ''], dtype=object)]
|
2,108 |
1912.12135
|
Duhwan Mun
|
Hyungki Kim and Duhwan Mun
|
Deep-learning-based classification and retrieval of components of a
process plant from segmented point clouds
|
31 pages, 7305 words, 16 figures, 4 tables
| null | null | null |
cs.CV cs.IR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Technology to recognize the type of component represented by a point cloud is
required in the reconstruction process of an as-built model of a process plant
based on laser scanning. The reconstruction process of a process plant through
laser scanning is divided into point cloud registration, point cloud
segmentation, and component type recognition and placement. Loss of shape data
or imbalance of point cloud density problems generally occur in the point cloud
data collected from large-scale facilities. In this study, we experimented with
the possibility of applying object recognition technology based on 3D deep
learning networks, which have been showing high performance recently, and
analyzed the results. For training data, we used a segmented point cloud
repository about components that we constructed by scanning a process plant.
For networks, we selected the multi-view convolutional neural network (MVCNN),
which is a view-based method, and PointNet, which is designed to allow the
direct input of point cloud data. In the case of the MVCNN, we also performed
an experiment on the generation method for two types of multi-view images that
can complement the shape occlusion of the segmented point cloud. In this
experiment, the MVCNN showed the highest retrieval accuracy of approximately
87%, whereas PointNet showed the highest retrieval mean average precision of
approximately 84%. Furthermore, both networks showed high recognition
performance for the segmented point cloud of plant components when there was
sufficient training data.
|
[{'version': 'v1', 'created': 'Fri, 13 Dec 2019 01:34:28 GMT'}]
|
2019-12-30
|
[array(['Kim', 'Hyungki', ''], dtype=object)
array(['Mun', 'Duhwan', ''], dtype=object)]
|
2,109 |
1502.07346
|
Alessandra Mastrobuono Battisti
|
Alessandra Mastrobuono-Battisti, Hagai B. Perets, Sean N. Raymond
|
A primordial origin for the composition similarity between the Earth and
the Moon
|
34 pages, 7 Figures, 4 Tables. Accepted for publication in Nature
| null |
10.1038/nature14333
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Most of the properties of the Earth-Moon system can be explained by a
collision between a planetary embryo and the growing Earth late in the
accretion process. Simulations show that most of the material that eventually
aggregates to form the Moon originates from the impactor. However, analysis of
the terrestrial and lunar isotopic composition show them to be highly similar.
In contrast, the compositions of other solar system bodies are significantly
different than the Earth and Moon. This poses a major challenge to the giant
impact scenario since the Moon-forming impactor is then thought to also have
differed in composition from the proto-Earth. Here we track the feeding zones
of growing planets in a suite of simulations of planetary accretion, in order
to measure the composition of Moon-forming impactors. We find that different
planets formed in the same simulation have distinct compositions, but the
compositions of giant impactors are systematically more similar to the planets
they impact. A significant fraction of planet-impactor pairs have virtually
identical compositions. Thus, the similarity in composition between the Earth
and Moon could be a natural consequence of a late giant impact.
|
[{'version': 'v1', 'created': 'Wed, 25 Feb 2015 21:00:07 GMT'}]
|
2015-06-24
|
[array(['Mastrobuono-Battisti', 'Alessandra', ''], dtype=object)
array(['Perets', 'Hagai B.', ''], dtype=object)
array(['Raymond', 'Sean N.', ''], dtype=object)]
|
2,110 |
2109.01723
|
Xiao Tang
|
Xiao Tang, Tianyu Wang, Chi-Wing Fu
|
Towards Accurate Alignment in Real-time 3D Hand-Mesh Reconstruction
| null | null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
3D hand-mesh reconstruction from RGB images facilitates many applications,
including augmented reality (AR). However, this requires not only real-time
speed and accurate hand pose and shape but also plausible mesh-image alignment.
While existing works already achieve promising results, meeting all three
requirements is very challenging. This paper presents a novel pipeline by
decoupling the hand-mesh reconstruction task into three stages: a joint stage
to predict hand joints and segmentation; a mesh stage to predict a rough hand
mesh; and a refine stage to fine-tune it with an offset mesh for mesh-image
alignment. With careful design in the network structure and in the loss
functions, we can promote high-quality finger-level mesh-image alignment and
drive the models together to deliver real-time predictions. Extensive
quantitative and qualitative results on benchmark datasets demonstrate that the
quality of our results outperforms the state-of-the-art methods on
hand-mesh/pose precision and hand-image alignment. In the end, we also showcase
several real-time AR scenarios.
|
[{'version': 'v1', 'created': 'Fri, 3 Sep 2021 20:42:01 GMT'}]
|
2021-09-07
|
[array(['Tang', 'Xiao', ''], dtype=object)
array(['Wang', 'Tianyu', ''], dtype=object)
array(['Fu', 'Chi-Wing', ''], dtype=object)]
|
2,111 |
2107.03902
|
Yating Niu
|
Yating Niu
|
Liouville type theorem of integral equation with anisotropic struture
|
21 pages
| null | null | null |
math.AP
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, we classify all positive solutions for the following integral
equation: \begin{equation} u(x)=\int_{\mathbb{R}^n_+}K_b(x,y)y_n^b f(u(y))dy,
\end{equation} where $ b > 1$ is a constant. Here $ K_b(x,y)$ is the Green
function of the following homogeneous Neumann boundary problem \begin{equation}
\left\{ \begin{aligned} -\text{div}(x^{b}_n \nabla u)&= f \quad in
\mathbb{R}^n_+ \\ \frac{\partial u}{\partial x_n}&= 0 \quad on \ \partial
\mathbb{R}^n_+ . \end{aligned} \right. \end{equation} By using the method of
moving planes in integral form, we derive the symmetry of positive solutions.
We also establish the equivalence between the integral equation and its
corresponding partial differential equation. Similarly, the results can be
generalized to the integral system.
|
[{'version': 'v1', 'created': 'Thu, 8 Jul 2021 15:33:37 GMT'}
{'version': 'v2', 'created': 'Sun, 11 Jul 2021 10:13:35 GMT'}]
|
2021-07-13
|
[array(['Niu', 'Yating', ''], dtype=object)]
|
2,112 |
2106.04397
|
Suresh Tiwari dr
|
S. C. Tiwari
|
Comment on 'New perspective on thermodynamics of spacetime: The
emergence of unimodular gravity and the equivalence of entropies'
|
2 pages
| null | null | null |
physics.gen-ph
|
http://creativecommons.org/licenses/by/4.0/
|
In this comment on the article by Alonso-Serrano and Liska (arXiv:
2008.04805) a formal resemblance between their expression of curvature scale
and the scale dependent on the matter energy-momentum ambiguity of Finkelstein
et al (JMP, 2001) is pointed out. Physical significance of this observation is
also discussed.
|
[{'version': 'v1', 'created': 'Thu, 4 Mar 2021 09:51:18 GMT'}]
|
2021-06-09
|
[array(['Tiwari', 'S. C.', ''], dtype=object)]
|
2,113 |
2108.06848
|
Yuchen Liu
|
Kenneth Ascher, Kristin DeVleming, Yuchen Liu
|
K-stability and birational models of moduli of quartic K3 surfaces
|
56 pages, comments are very welcome. v2: to appear in Invent. Math
| null | null | null |
math.AG math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that the K-moduli spaces of log Fano pairs $(\mathbb{P}^3, cS)$ where
$S$ is a quartic surface interpolate between the GIT moduli space of quartic
surfaces and the Baily-Borel compactification of moduli of quartic K3 surfaces
as $c$ varies in the interval $(0,1)$. We completely describe the wall
crossings of these K-moduli spaces. As the main application, we verify
Laza-O'Grady's prediction on the Hassett-Keel-Looijenga program for quartic K3
surfaces. We also obtain the K-moduli compactification of quartic double
solids, and classify all Gorenstein canonical Fano degenerations of
$\mathbb{P}^3$.
|
[{'version': 'v1', 'created': 'Mon, 16 Aug 2021 01:03:45 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Nov 2022 04:58:50 GMT'}]
|
2022-11-14
|
[array(['Ascher', 'Kenneth', ''], dtype=object)
array(['DeVleming', 'Kristin', ''], dtype=object)
array(['Liu', 'Yuchen', ''], dtype=object)]
|
2,114 |
1906.10428
|
Dorien Herremans
|
Kat Agres, Simon Lui, Dorien Herremans
|
A novel music-based game with motion capture to support cognitive and
motor function in the elderly
| null |
IEEE Conference on Games 2019, London, UK
| null | null |
cs.HC cs.MM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents a novel game prototype that uses music and motion
detection as preventive medicine for the elderly. Given the aging populations
around the globe, and the limited resources and staff able to care for these
populations, eHealth solutions are becoming increasingly important, if not
crucial, additions to modern healthcare and preventive medicine. Furthermore,
because compliance rates for performing physical exercises are often quite low
in the elderly, systems able to motivate and engage this population are a
necessity. Our prototype uses music not only to engage listeners, but also to
leverage the efficacy of music to improve mental and physical wellness. The
game is based on a memory task to stimulate cognitive function, and requires
users to perform physical gestures to mimic the playing of different musical
instruments. To this end, the Microsoft Kinect sensor is used together with a
newly developed gesture detection module in order to process users' gestures.
The resulting prototype system supports both cognitive functioning and physical
strengthening in the elderly.
|
[{'version': 'v1', 'created': 'Tue, 25 Jun 2019 10:02:35 GMT'}]
|
2019-06-26
|
[array(['Agres', 'Kat', ''], dtype=object)
array(['Lui', 'Simon', ''], dtype=object)
array(['Herremans', 'Dorien', ''], dtype=object)]
|
2,115 |
2005.10100
|
Rene Scheurwater
|
Rene Scheurwater
|
Reduction of valuation risk by Kalman filtering in business valuation
models
|
23 pages, 6 figures, 3 tables
| null | null | null |
q-fin.CP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A recursive free cash flow model (FCFF) is proposed to determine the
corporate value of a company in an efficient market in which new market and
company-specific information is modelled by additive white noise. The
stochastic equations of the FCFF model are solved explicitly to obtain the
average corporate value and valuation risk. It is pointed out that valuation
risk can be reduced significantly by implementing a conventional two-step
Kalman filter in the recursive FCFF model, thus improving its predictive power.
Systematic errors of the Kalman filter, caused by intermediate changes in risk
and hence in the weighted average cost of capital (WACC), are detected by
measuring the residuals. By including an additional adjustment step in the
conventional Kalman filtering algorithm, it is shown that systematic errors can
be eliminated by recursively adjusting the WACC. The performance of the
three-step adaptive Kalman filter is tested by Monte Carlo simulation which
demonstrates the reliability and robustness against systematic errors. It is
also proved that the conventional and adaptive Kalman filtering algorithms can
be implemented into other valuation models such as the economic value added
model (EVA) and free cash flow to equity model (FCFE).
|
[{'version': 'v1', 'created': 'Wed, 20 May 2020 15:01:13 GMT'}]
|
2020-05-21
|
[array(['Scheurwater', 'Rene', ''], dtype=object)]
|
2,116 |
math/0607332
|
Yo'av Rieck
|
Yo'av Rieck
|
A proof of Waldhausen's uniqueness of splittings of S^3 (after
Rubinstein and Scharlemann)
|
This is the version published by Geometry & Topology Monographs on 3
December 2007
|
Geom. Topol. Monogr. 12 (2007) 277-284
|
10.2140/gtm.2007.12.277
| null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In [Topology 35 (1996) 1005--1023] J H Rubinstein and M Scharlemann, using
Cerf Theory, developed tools for comparing Heegaard splittings of irreducible,
non-Haken manifolds. As a corollary of their work they obtained a new proof of
Waldhausen's uniqueness of Heegaard splittings of S^3. In this note we use Cerf
Theory and develop the tools needed for comparing Heegaard splittings of S^3.
This allows us to use Rubinstein and Scharlemann's philosophy and obtain a
simpler proof of Waldhausen's Theorem. The combinatorics we use are very
similar to the game Hex and requires that Hex has a winner. The paper includes
a proof of that fact (Proposition 3.6).
|
[{'version': 'v1', 'created': 'Fri, 14 Jul 2006 01:56:52 GMT'}
{'version': 'v2', 'created': 'Thu, 29 Mar 2007 20:13:33 GMT'}
{'version': 'v3', 'created': 'Tue, 31 Mar 2009 20:37:01 GMT'}]
|
2009-03-31
|
[array(['Rieck', "Yo'av", ''], dtype=object)]
|
2,117 |
2011.09937
|
Nick Bingham
|
Nicholas Hugh Bingham
|
Prediction Theory for Stationary Functional Time Series
| null | null | null | null |
math.PR
|
http://creativecommons.org/licenses/by/4.0/
|
We survey aspects of prediction theory in infinitely many dimensions, with a
view to the theory and applications of functional time series.
|
[{'version': 'v1', 'created': 'Thu, 19 Nov 2020 16:20:09 GMT'}
{'version': 'v2', 'created': 'Tue, 23 Nov 2021 16:27:27 GMT'}]
|
2021-11-24
|
[array(['Bingham', 'Nicholas Hugh', ''], dtype=object)]
|
2,118 |
cond-mat/0206537
|
Marc Andre Ahrens
|
M.A. Ahrens and A. Schadschneider and J. Zittartz
|
Exact ground states of spin-2 chains
|
7 pages, 2 figures, to be published in europhysics letters, uses
epl.cls
| null |
10.1209/epl/i2002-00126-5
| null |
cond-mat.str-el
| null |
We use the matrix product approach to construct all optimum ground states of
general anisotropic spin-2 chains with nearest neighbour interactions and
common symmetries. These states are exact ground states of the model and their
properties depend on up to three parameters. We find three different
antiferromagnetic Haldane phases, one weak antiferromagnetic and one weak
ferromagnetic phase. The antiferromagnetic phases can be described as spin
liquids with exponentially decaying correlation functions. The variety of
phases found with the matrix product ansatz also gives insight into the
behaviour of spin chains with arbitrary higher spins.
|
[{'version': 'v1', 'created': 'Thu, 27 Jun 2002 11:05:45 GMT'}]
|
2009-11-07
|
[array(['Ahrens', 'M. A.', ''], dtype=object)
array(['Schadschneider', 'A.', ''], dtype=object)
array(['Zittartz', 'J.', ''], dtype=object)]
|
2,119 |
1410.4213
|
Ariel Sousa Adorno
|
T. A. S. Pereira, A. A. Sousa, M. H. Degani, G. A. Farias
|
Dielectric mismatch and shallow donor impurities in GaN/HfO2 quantum
wells
|
6 Pages, 7 figures
| null |
10.1016/j.physe.2014.10.005
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work we investigate electron-impurity binding energy in GaN/HfO$_2$
quantum wells. The calculation considers simultaneously all energy
contributions caused by the dielectric mismatch: (i) image self-energy (i.e.,
interaction between electron and its image charge), (ii) the direct Coulomb
interaction between the electron-impurity and (iii) the interactions among
electron and impurity image charges. The theoretical model account for the
solution of the time-dependent Schr\"odinger equation and the results shows how
the magnitude of the electron-impurity binding energy depends on the position
of impurity in the well-barrier system. The role of the large dielectric
constant in the barrier region is exposed with the comparison of the results
for GaN/HfO$_2$ with those of a more typical GaN/AlN system, for two different
confinement regimes: narrow and wide quantum wells.
|
[{'version': 'v1', 'created': 'Wed, 15 Oct 2014 20:13:23 GMT'}]
|
2014-10-17
|
[array(['Pereira', 'T. A. S.', ''], dtype=object)
array(['Sousa', 'A. A.', ''], dtype=object)
array(['Degani', 'M. H.', ''], dtype=object)
array(['Farias', 'G. A.', ''], dtype=object)]
|
2,120 |
0910.3034
|
John Davis
|
Billy J. Jackson, John M. Davis, Ian A. Gravagne, Robert J. Marks II
|
Linear State Feedback Stabilization on Time Scales
|
15 pages
| null | null | null |
math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For a general class of dynamical systems (of which the canonical continuous
and uniform discrete versions are but special cases), we prove that there is a
state feedback gain such that the resulting closed-loop system is uniformly
exponentially stable with a prescribed rate. The methods here generalize and
extend Gramian-based linear state feedback control to much more general time
domains, e.g. nonuniform discrete or a combination of continuous and discrete
time. In conclusion, we discuss an experimental implementation of this theory.
|
[{'version': 'v1', 'created': 'Fri, 16 Oct 2009 03:52:47 GMT'}]
|
2009-10-19
|
[array(['Jackson', 'Billy J.', ''], dtype=object)
array(['Davis', 'John M.', ''], dtype=object)
array(['Gravagne', 'Ian A.', ''], dtype=object)
array(['Marks', 'Robert J.', 'II'], dtype=object)]
|
2,121 |
0904.0589
|
Van Hung Le
|
Van Hung Le (1), Fei Liu (1), and Dinh Khang Tran (2) ((1)La Trobe
University, Australia (2)Hanoi University of Technology, Vietnam)
|
Fuzzy Linguistic Logic Programming and its Applications
|
33 pages, to appear in Theory and Practice of Logic Programming
(TPLP)
| null | null | null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The paper introduces fuzzy linguistic logic programming, which is a
combination of fuzzy logic programming, introduced by P. Vojtas, and hedge
algebras in order to facilitate the representation and reasoning on human
knowledge expressed in natural languages. In fuzzy linguistic logic
programming, truth values are linguistic ones, e.g., VeryTrue,
VeryProbablyTrue, and LittleFalse, taken from a hedge algebra of a linguistic
truth variable, and linguistic hedges (modifiers) can be used as unary
connectives in formulae. This is motivated by the fact that humans reason
mostly in terms of linguistic terms rather than in terms of numbers, and
linguistic hedges are often used in natural languages to express different
levels of emphasis. The paper presents: (i) the language of fuzzy linguistic
logic programming; (ii) a declarative semantics in terms of Herbrand
interpretations and models; (iii) a procedural semantics which directly
manipulates linguistic terms to compute a lower bound to the truth value of a
query, and proves its soundness; (iv) a fixpoint semantics of logic programs,
and based on it, proves the completeness of the procedural semantics; (v)
several applications of fuzzy linguistic logic programming; and (vi) an idea of
implementing a system to execute fuzzy linguistic logic programs.
|
[{'version': 'v1', 'created': 'Fri, 3 Apr 2009 14:45:20 GMT'}]
|
2009-04-06
|
[array(['Le', 'Van Hung', ''], dtype=object)
array(['Liu', 'Fei', ''], dtype=object)
array(['Tran', 'Dinh Khang', ''], dtype=object)]
|
2,122 |
math/0011087
|
Margarida Mendes Lopes
|
Igor Dolgachev, Margarida Mendes Lopes, Rita Pardini
|
Surfaces with many nodes
|
Latex 2e, 17 pages
| null | null | null |
math.AG
| null |
We describe smooth rational projective algebraic surfaces over an
algebraically closed field of characteristic different from 2 which contain $n
\ge \b_2-2$ disjoint smooth rational curves with self-intersection -2, where
$\b_2$ is the second Betti number. In the last section this is applied to the
study of minimal complex surfaces of general type with $p_g = 0$ and $K^2 = 8,
9$ which admit an automorphism of order 2.
|
[{'version': 'v1', 'created': 'Tue, 14 Nov 2000 10:40:19 GMT'}]
|
2007-05-23
|
[array(['Dolgachev', 'Igor', ''], dtype=object)
array(['Lopes', 'Margarida Mendes', ''], dtype=object)
array(['Pardini', 'Rita', ''], dtype=object)]
|
2,123 |
hep-ph/0608078
|
D. F. Mota
|
David F. Mota and Douglas J. Shaw
|
Evading Equivalence Principle Violations, Cosmological and other
Experimental Constraints in Scalar Field Theories with a Strong Coupling to
Matter
|
72 pages, 13 figures. New section on the Casimir Effect and
experimental tests. Tighther constraints on the models have now been
obtained. Sections of the mathematical formalism and experimental bounds were
re-written and clarified. Number of pages reduced due to revtex4 format
|
Phys.Rev.D75:063501,2007
|
10.1103/PhysRevD.75.063501
| null |
hep-ph astro-ph gr-qc hep-th
| null |
We show that, as a result of non-linear self-interactions, it is feasible, at
least in light of the bounds coming from terrestrial tests of gravity,
measurements of the Casimir force and those constraints imposed by the physics
of compact objects, big-bang nucleosynthesis and measurements of the cosmic
microwave background, for there to exist, in our Universe, one or more scalar
fields that couple to matter much more strongly than gravity does. These scalar
fields behave like chameleons: changing their properties to fit their
surroundings. As a result these scalar fields can be not only very strongly
coupled to matter, but also remain relatively light over solar system scales.
These fields could also be detected by a number of future experiments provided
they are properly designed to do so. These results open up an altogether new
window, which might lead to a completely different view of the role played by
light scalar fields in particle physics and cosmology.
|
[{'version': 'v1', 'created': 'Mon, 7 Aug 2006 13:47:29 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Aug 2006 06:57:15 GMT'}
{'version': 'v3', 'created': 'Fri, 1 Dec 2006 14:28:56 GMT'}]
|
2008-11-26
|
[array(['Mota', 'David F.', ''], dtype=object)
array(['Shaw', 'Douglas J.', ''], dtype=object)]
|
2,124 |
2001.02612
|
Jian-Jia Weng
|
Jian-Jia Weng, Fady Alajaji, and Tam\'as Linder
|
Adaptive Coding for Two-Way Lossy Source-Channel Communication
|
a spelling error corrected
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An adaptive joint source-channel coding (JSCC) scheme is presented for
transmitting correlated sources over discrete-memoryless two-way channels
subject to distortion constraints. The proposed JSCC scheme makes use of the
previously transmitted and received channel signals as well as the sources'
correlation to facilitate coordination between terminals. It is shown that the
adaptive scheme strictly subsumes prior lossy coding methods for two-way
simultaneous transmission and yields a new adaptive separate source-channel
coding result. Two examples are given to show the scheme's advantages.
|
[{'version': 'v1', 'created': 'Wed, 8 Jan 2020 16:49:07 GMT'}
{'version': 'v2', 'created': 'Wed, 8 Apr 2020 11:49:28 GMT'}
{'version': 'v3', 'created': 'Wed, 12 Aug 2020 12:43:40 GMT'}]
|
2020-08-13
|
[array(['Weng', 'Jian-Jia', ''], dtype=object)
array(['Alajaji', 'Fady', ''], dtype=object)
array(['Linder', 'Tamás', ''], dtype=object)]
|
2,125 |
2004.12225
|
Milana Pavic-Colic
|
Vladimir Djordji\'c, Milana Pavi\'c-\v{C}oli\'c and Nikola
Spasojevi\'c
|
Polytropic gas modelling at kinetic and macroscopic levels
| null | null | null | null |
math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we consider the kinetic model of continuous type describing a
polyatomic gas in two different settings corresponding to a different choice of
the functional space used to define macroscopic quantities. Such a model
introduces a single continuous variable supposed to capture all the phenomena
related to the more complex structure of a molecule having more than one atom,
such as internal degrees of freedom in a collision. In particular, we provide a
direct comparison of these two settings, and show their equivalence after the
distribution function is rescaled and the cross section is reformulated. We
then focus on the kinetic model for which the rigorous existence and uniqueness
result in the space homogeneous case is recently proven. Using the cross
section proposed in that analysis together with the maximum entropy principle,
we establish macroscopic models of six and fourteen fields. In the case of six
moments, we calculate the exact, nonlinear, production term and prove its total
agreement with extended thermodynamics, as it satisfies the entropy residual
inequality on the whole range of model validity. Moreover, for the fourteen
moments model, we provide new expressions for relaxation times and transport
coefficients in a linearized setting, that yield both matching with the
experimental data for dependence of the shear viscosity upon temperature and a
satisfactory agreement with the theoretical value of the Prandtl number, on the
room temperature range when only translational and rotational modes of
molecules are taken into account, as much as on higher temperatures when
vibrational modes appear as well.
|
[{'version': 'v1', 'created': 'Sat, 25 Apr 2020 20:04:37 GMT'}
{'version': 'v2', 'created': 'Sun, 14 Feb 2021 14:36:44 GMT'}]
|
2021-02-16
|
[array(['Djordjić', 'Vladimir', ''], dtype=object)
array(['Pavić-Čolić', 'Milana', ''], dtype=object)
array(['Spasojević', 'Nikola', ''], dtype=object)]
|
2,126 |
1512.03061
|
Yasuyuki Hatsuda
|
Sebastian Franco, Yasuyuki Hatsuda, Marcos Marino
|
Exact quantization conditions for cluster integrable systems
|
27 pages, v2: published version
| null |
10.1088/1742-5468/2016/06/063107
| null |
hep-th math-ph math.MP math.SP nlin.SI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose exact quantization conditions for the quantum integrable systems
of Goncharov and Kenyon, based on the enumerative geometry of the corresponding
toric Calabi-Yau manifolds. Our conjecture builds upon recent results on the
quantization of mirror curves, and generalizes a previous proposal for the
quantization of the relativistic Toda lattice. We present explicit tests of our
conjecture for the integrable systems associated to the resolved C^3/Z_5 and
C^3/Z_6 orbifolds.
|
[{'version': 'v1', 'created': 'Wed, 9 Dec 2015 21:00:05 GMT'}
{'version': 'v2', 'created': 'Sat, 4 Jun 2016 10:12:09 GMT'}]
|
2016-08-03
|
[array(['Franco', 'Sebastian', ''], dtype=object)
array(['Hatsuda', 'Yasuyuki', ''], dtype=object)
array(['Marino', 'Marcos', ''], dtype=object)]
|
2,127 |
2212.13790
|
Hitesh Changlani
|
Ronald Melendrez, Bhaskar Mukherjee, Prakash Sharma, Arijeet Pal,
Hitesh J. Changlani
|
Real space thermalization of locally driven quantum magnets
|
4+ pages, 4 figures. 2 pages of Supplemental Material
| null | null | null |
cond-mat.str-el cond-mat.stat-mech quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Thermalization and its breakdown in isolated systems has led to a deeper
understanding of non-equilibrium quantum states and their dependence on initial
conditions. This is prominently highlighted by the existence of quantum scars,
special athermal states with an underlying effective superspin structure,
embedded in an otherwise chaotic many-body spectrum. Spin $XXZ$ models and
their variants in one and higher dimension have been shown to host exact
quantum scars, exhibiting perfect revivals of spin helix states that are
realizable in synthetic and condensed matter systems. Motivated by these
advances, we propose experimentally accessible local, time-dependent protocols
to explore the spatial thermalization profile and highlight how different parts
of the system thermalize and affect the fate of the superspin. We identify
distinct parametric regimes for the ferromagnetic ($X$-polarized) initial state
based on the interplay between the driven spin and the rest, including local
athermal behavior where the driven spin effectively decouples, acting like a
"cold" spot while being instrumental in heating up the other spins. We develop
a real and Floquet space picture that explains our numerical observations, and
make predictions that can be tested in various experimental setups.
|
[{'version': 'v1', 'created': 'Wed, 28 Dec 2022 11:52:53 GMT'}]
|
2022-12-29
|
[array(['Melendrez', 'Ronald', ''], dtype=object)
array(['Mukherjee', 'Bhaskar', ''], dtype=object)
array(['Sharma', 'Prakash', ''], dtype=object)
array(['Pal', 'Arijeet', ''], dtype=object)
array(['Changlani', 'Hitesh J.', ''], dtype=object)]
|
2,128 |
1911.07802
|
Alexander Johannes Edward Kreil
|
Alexander J. E. Kreil (1), Halyna Yu. Musiienko-Shmarova (1), Pascal
Frey (1), Anna Pomyalov (2), Victor S. L'vov (2), Gennadii A. Melkov (3),
Alexander A. Serga (1), Burkard Hillebrands (1) ((1) Fachbereich Physik and
Landesforschungszentrum OPTIMAS, Technische Universit\"at Kaiserslautern,
Germany,(2) Department of Chemical and Biological Physics, Weizmann Institute
of Science, Israel,(3) Faculty of Radiophysics, Electronics, and Computer
Systems, Taras Shevchenko National University of Kyiv, Ukraine)
|
Experimental observation of Josephson oscillations in a room-temperature
Bose-Einstein magnon condensate
| null | null | null | null |
cond-mat.quant-gas
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The alternating current (ac) Josephson effect in a time-independent
spatially-inhomogeneous setting is manifested by the occurrence of Josephson
oscillations - periodic macroscopic phase-induced collective motions of the
quantum condensate. So far, this phenomenon was observed at cryogenic
temperatures in superconductors, in superfluid helium, and in Bose-Einstein
condensates (BECs) of trapped atoms. Here, we report on the discovery of the ac
Josephson effect in a magnon BEC carried by a room-temperature ferrimagnetic
film. The BEC is formed in a parametrically populated magnon gas in the spatial
vicinity of a magnetic trench created by a dc electric current. The appearance
of the Josephson effect is manifested by oscillations of the magnon BEC density
in the trench, caused by a coherent phase shift between this BEC and the BEC in
the nearby regions. Our findings advance the physics of room-temperature
macroscopic quantum phenomena and will allow for their application for data
processing in magnon spintronics devices.
|
[{'version': 'v1', 'created': 'Mon, 18 Nov 2019 18:08:56 GMT'}
{'version': 'v2', 'created': 'Thu, 21 Jan 2021 13:09:51 GMT'}
{'version': 'v3', 'created': 'Wed, 21 Jul 2021 11:29:07 GMT'}]
|
2021-07-22
|
[array(['Kreil', 'Alexander J. E.', ''], dtype=object)
array(['Musiienko-Shmarova', 'Halyna Yu.', ''], dtype=object)
array(['Frey', 'Pascal', ''], dtype=object)
array(['Pomyalov', 'Anna', ''], dtype=object)
array(["L'vov", 'Victor S.', ''], dtype=object)
array(['Melkov', 'Gennadii A.', ''], dtype=object)
array(['Serga', 'Alexander A.', ''], dtype=object)
array(['Hillebrands', 'Burkard', ''], dtype=object)]
|
2,129 |
2011.14166
|
Alexandre Champagne
|
I. G. Rebollo, F. C. Rodrigues-Machado, W. Wright, G. J. Melin, and A.
R. Champagne
|
Thin-suspended 2D Materials: Facile, Versatile, and Deterministic
Transfer Assembly
| null |
2D Materials 8 035028 (2021)
|
10.1088/2053-1583/abf98c
| null |
cond-mat.mes-hall cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report a deterministic 2D material (2DM) transfer method to assemble
any-stacking-order heterostructures incorporating suspended ultra-thin 2D
materials, such as single-layer graphene (SLG) and bilayer graphene (BLG). The
transfer procedure relies on a single-step preparation nitrocellulose
micro-stamp, which combines both outstanding adhesion and softness. It permits
the dry pick-up of naked 2D crystals (graphene, MoS$_2$, and hBN) directly from
a SiO$_2$ substrate, and to precisely transfer them on substrates or trenches.
Optical and Raman data show that no significant defect is introduced upon
transfer, even in suspended SLG and BLG. The areas transferred range up $\sim$
1000 $\mu$m$^2$ on substrate. High-yield transfer of suspended ultra-thin 2DM
does not require critical point drying for areas up to 15 $\mu$m$^2$ or
suspension heights down to 160 nm. To demonstrate the method's capabilities, we
assembled on-substrate and suspended optical cavities tuning BLG's Raman
scattering intensity by factors of 19 and 4, respectively. This resilient and
rapid 2DM transfer procedure will accelerate the fabrication of many
heterostructures and permit versatile suspension of 2DMs for research in
twistronics, straintronics, and nano-opto-electro-mechanical systems (NOEMS).
|
[{'version': 'v1', 'created': 'Sat, 28 Nov 2020 16:54:50 GMT'}
{'version': 'v2', 'created': 'Fri, 14 May 2021 20:23:17 GMT'}]
|
2021-05-18
|
[array(['Rebollo', 'I. G.', ''], dtype=object)
array(['Rodrigues-Machado', 'F. C.', ''], dtype=object)
array(['Wright', 'W.', ''], dtype=object)
array(['Melin', 'G. J.', ''], dtype=object)
array(['Champagne', 'A. R.', ''], dtype=object)]
|
2,130 |
2205.11091
|
Giulia Murtas
|
Giulia Murtas, Andrew Hillier, Ben Snow
|
Collisional ionisation and recombination effects on coalescence
instability in chromospheric partially ionised plasmas
|
19 pages, 19 figures. Accepted for publication by Physics of Plasmas
| null | null | null |
physics.plasm-ph astro-ph.SR
|
http://creativecommons.org/licenses/by/4.0/
|
Plasmoid-mediated fast magnetic reconnection plays a fundamental role in
driving explosive dynamics and heating, but relatively little is known about
how it develops in partially ionised plasmas (PIP) of the solar chromosphere.
Partial ionisation might largely alter the dynamics of the coalescence
instability, which promotes fast reconnection and forms a turbulent
reconnecting current sheet through plasmoid interaction, but it is still
unclear to what extent PIP effects influence this process. We investigate the
role of collisional ionisation and recombination in the development of plasmoid
coalescence in PIP through 2.5D simulations of a two-fluid model. The aim is to
understand whether these two-fluid coupling processes play a role in
accelerating reconnection. We find that in general ionisation-recombination
process slow down the coalescence. Unlike the previous models in G. Murtas, A.
Hillier \& B. Snow, Physics of Plasmas 28, 032901 (2021) that included thermal
collisions only, ionisation and recombination stabilise current sheets and
suppress non-linear dynamics, with turbulent reconnection occurring in limited
cases: bursts of ionisation lead to the formation of thicker current sheets,
even when radiative losses are included to cool the system. Therefore, the
coalescence time scale is very sensitive to ionisation-recombination processes.
However, reconnection in PIP is still faster than in a fully ionised plasma
environment having the same bulk density: the PIP reconnection rate
($M_{_{\operatorname{IRIP}}} = 0.057$) increases by a factor of $\sim 1.2$ with
respect to the MHD reconnection rate ($M_{_{\operatorname{MHD}}} = 0.047$).
|
[{'version': 'v1', 'created': 'Mon, 23 May 2022 07:22:02 GMT'}]
|
2022-05-24
|
[array(['Murtas', 'Giulia', ''], dtype=object)
array(['Hillier', 'Andrew', ''], dtype=object)
array(['Snow', 'Ben', ''], dtype=object)]
|
2,131 |
2003.04322
|
Abderahmen Zoghbi
|
Abderahmen Zoghbi, Sihem Kalli, Jon M Miller, Misaki Mizumoto
|
Testing The Lamp-Post and Wind Reverberation Models with XMM-Newton
Observations of NGC 5506
|
Accepted for publication in ApJ. Analysis codes and data are
available on https://github.com/zoghbi-a/Testing-Reverberation-In-NGC5506
| null |
10.3847/1538-4357/ab7dc8
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The lamp-post geometry is often used to model X-ray data of accreting black
holes. Despite its simple assumptions, it has proven to be powerful in
inferring fundamental black hole properties such as the spin. Early results of
X-ray reverberations showed support for such a simple picture, though
wind-reverberation models have also been shown to explain the observed delays.
Here, we analyze new and old XMM-Newton observations of the variable Seyfert-1
galaxy NGC 5506 to test these models. The source shows an emission line feature
around 6.7 keV that is delayed relative to harder and softer energy bands. The
spectral feature can be modeled with either a weakly relativistic disk line or
by scattering in distant material. By modeling both the spectral and timing
signatures, we find that the reflection fraction needed to explain the lags is
larger than observed in the time-averaged spectrum, ruling out both a static
lamp-post and simple wind reverberation models.
|
[{'version': 'v1', 'created': 'Mon, 9 Mar 2020 18:00:01 GMT'}]
|
2020-04-29
|
[array(['Zoghbi', 'Abderahmen', ''], dtype=object)
array(['Kalli', 'Sihem', ''], dtype=object)
array(['Miller', 'Jon M', ''], dtype=object)
array(['Mizumoto', 'Misaki', ''], dtype=object)]
|
2,132 |
2207.00557
|
Lior Cohen
|
Reinier van der Meer, Zichang Huang, Malaquias Correa Anguita, Dongxue
Qu, Peter Hooijschuur, Hongguang Liu, Muxin Han, Jelmer J. Renema, Lior Cohen
|
Experimental Simulation of Loop Quantum Gravity on a Photonic Chip
|
5 pages, 4 figures. comments are welcome
| null |
10.1038/s41534-023-00702-y
| null |
quant-ph gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The unification of general relativity and quantum theory is one of the
fascinating problems of modern physics. One leading solution is Loop Quantum
Gravity (LQG). Simulating LQG may be important for providing predictions which
can then be tested experimentally. However, such complex quantum simulations
cannot run efficiently on classical computers, and quantum computers or
simulators are needed. Here, we experimentally demonstrate quantum simulations
of spinfoam amplitudes of LQG on an integrated photonics quantum processor. We
simulate a basic transition of LQG and show that the derived spinfoam vertex
amplitude falls within 4% error with respect to the theoretical prediction,
despite experimental imperfections. We also discuss how to generalize the
simulation for more complex transitions, in realistic experimental conditions,
which will eventually lead to a quantum advantage demonstration as well as
expand the toolbox to investigate LQG.
|
[{'version': 'v1', 'created': 'Fri, 1 Jul 2022 17:14:30 GMT'}]
|
2023-04-19
|
[array(['van der Meer', 'Reinier', ''], dtype=object)
array(['Huang', 'Zichang', ''], dtype=object)
array(['Anguita', 'Malaquias Correa', ''], dtype=object)
array(['Qu', 'Dongxue', ''], dtype=object)
array(['Hooijschuur', 'Peter', ''], dtype=object)
array(['Liu', 'Hongguang', ''], dtype=object)
array(['Han', 'Muxin', ''], dtype=object)
array(['Renema', 'Jelmer J.', ''], dtype=object)
array(['Cohen', 'Lior', ''], dtype=object)]
|
2,133 |
1301.3150
|
Eugene Vasiliev
|
Eugene Vasiliev, David Merritt
|
The loss cone problem in axisymmetric nuclei
|
27 pages, 14 figures, matches ApJ accepted version. Software for
computing capture rates is available at http://td.lpi.ru/~eugvas/losscone/
|
ApJ, 774, 87 (2013)
|
10.1088/0004-637X/774/1/87
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the problem of consumption of stars by a supermassive black hole
(SBH) at the center of an axisymmetric galaxy. Inside the SBH sphere of
influence, motion of stars in the mean field is regular and can be described
analytically in terms of three integrals of motion: the energy E, the
z-component of angular momentum L_z, and the secular Hamiltonian H. There exist
two classes of orbits, tubes and saucers; saucers occupy the
low-angular-momentum parts of phase space and their fraction is proportional to
the degree of flattening of the nucleus. Perturbations due to gravitational
encounters lead to diffusion of stars in integral space, which can be described
using the Fokker-Planck equation. We calculate the diffusion coefficients and
solve this equation in the two-dimensional phase space (L_z, H), for various
values of the capture radius and the degree of flattening. Capture rates are
found to be modestly higher than in the spherical case, up to a factor of a
few, and most captures take place from saucer orbits. We also carry out a set
of collisional N-body simulations to confirm the predictions of the
Fokker-Planck models. We discuss the implications of our results for rates of
tidal disruption and capture in the Milky Way and external galaxies.
|
[{'version': 'v1', 'created': 'Mon, 14 Jan 2013 21:02:57 GMT'}
{'version': 'v2', 'created': 'Tue, 30 Jul 2013 20:00:14 GMT'}]
|
2013-08-27
|
[array(['Vasiliev', 'Eugene', ''], dtype=object)
array(['Merritt', 'David', ''], dtype=object)]
|
2,134 |
0811.2659
|
Rim Dib
|
Rim Dib, Victoria M. Kaspi, Fotis P. Gavriil
|
RXTE Monitoring of the Anomalous X-ray Pulsar 1E 1048.1-5937: Long-Term
Variability and the 2007 March Event
|
39 pages, 15 figures, accepted for publication in the astrophysical
journal
| null |
10.1088/0004-637X/702/1/614
| null |
astro-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
After three years of no unusual activity, Anomalous X-ray Pulsar 1E
1048.1-5937 reactivated in 2007 March. We report on the detection of a large
glitch (Delta(nu)/nu =1.63(2)X~10^{-5}) on 2007 March 26 (MJD 54185.9),
contemporaneous with the onset of a pulsed-flux flare, the third flare observed
from this source in 10 years of monitoring with the Rossi X-ray Timing
Explorer. Additionally, we report on a detailed study of the evolution of the
timing properties, the pulsed flux, and the pulse profile of this source as
measured by RXTE from 1996 July to 2008 January. In our timing study, we
attempted phase coherent timing of all available observations. We show that in
2001, a timing anomaly of uncertain nature occurred near the rise of the first
pulsed flux flare; we show that a likely glitch (Delta(nu)/nu =2.91(9)X10^{-6})
occurred in 2002, near the rise of the second flare, and we present a detailed
description of the variations in the spin-down. In our pulsed flux study, we
compare the decays of the three flares and discuss changes in the hardness
ratio. In our pulse profile study, we show that the profile exhibited large
variations near the peak of the first two flares, and several small short-term
profile variations during the most recent flare. Finally, we report on the
discovery of a small burst 27 days after the peak of the last flare, the fourth
burst discovered from this source. We discuss the relationships between the
observed properties in the framework of the magnetar model.
|
[{'version': 'v1', 'created': 'Mon, 17 Nov 2008 10:11:04 GMT'}
{'version': 'v2', 'created': 'Sat, 25 Jul 2009 03:35:37 GMT'}]
|
2015-05-13
|
[array(['Dib', 'Rim', ''], dtype=object)
array(['Kaspi', 'Victoria M.', ''], dtype=object)
array(['Gavriil', 'Fotis P.', ''], dtype=object)]
|
2,135 |
cond-mat/0303207
|
Jacobus Verbaarschot
|
N.C. Snaith, P.J. Forrester and J.J.M. Verbaarschot
|
Developments in Random Matrix Theory
|
22 pages, Latex
|
J.Phys. A36 (2003) R1
| null |
SUNY-NTG-03/03
|
cond-mat.dis-nn hep-th math-ph math.MP
| null |
In this preface to the Journal of Physics A, Special Edition on Random Matrix
Theory, we give a review of the main historical developments of random matrix
theory. A short summary of the papers that appear in this special edition is
also given.
|
[{'version': 'v1', 'created': 'Tue, 11 Mar 2003 19:35:47 GMT'}]
|
2007-05-23
|
[array(['Snaith', 'N. C.', ''], dtype=object)
array(['Forrester', 'P. J.', ''], dtype=object)
array(['Verbaarschot', 'J. J. M.', ''], dtype=object)]
|
2,136 |
hep-ph/0012267
|
Dr. Dubravko Klabucar
|
Dubravko Klabucar (Zagreb University), Dalibor Kekez (Institute Rudjer
Boskovic), Michael D. Scadron (University of Arizona)
|
On the eta-eta' complex in the SD-BS approach
|
11 pages, 1 figure, revtex. Invited talk presented by D. Klabucar at
the workshop "Quark Matter in Astro- and Particle Physics" (27.-29. November
2000, Rostock, Germany), to appear in the proceedings of this workshop
| null | null |
ZTF-00/06
|
hep-ph nucl-th
| null |
The bound-state Schwinger-Dyson and Bethe-Salpeter (SD-BS) approach is
chirally well-behaved and provides a reliable treatment of the eta-eta' complex
although a ladder approximation is employed. Allowing for the effects of the
SU(3) flavor symmetry breaking in the quark-antiquark annihilation, leads to
the improved eta-eta' mass matrix.
|
[{'version': 'v1', 'created': 'Wed, 20 Dec 2000 14:50:47 GMT'}]
|
2007-05-23
|
[array(['Klabucar', 'Dubravko', '', 'Zagreb University'], dtype=object)
array(['Kekez', 'Dalibor', '', 'Institute Rudjer\n Boskovic'],
dtype=object)
array(['Scadron', 'Michael D.', '', 'University of Arizona'], dtype=object)]
|
2,137 |
2108.00719
|
Maxime De Bruyn
|
Maxime De Bruyn, Ehsan Lotfi, Jeska Buhmann, Walter Daelemans
|
ConveRT for FAQ Answering
|
Accepted at bnaicbenelearn2021
| null | null | null |
cs.CL
|
http://creativecommons.org/licenses/by/4.0/
|
Knowledgeable FAQ chatbots are a valuable resource to any organization. While
powerful and efficient retrieval-based models exist for English, it is rarely
the case for other languages for which the same amount of training data is not
available. In this paper, we propose a novel pre-training procedure to adapt
ConveRT, an English conversational retriever model, to other languages with
less training data available. We apply it for the first time to the task of
Dutch FAQ answering related to the COVID-19 vaccine. We show it performs better
than an open-source alternative in both a low-data regime and a high-data
regime.
|
[{'version': 'v1', 'created': 'Mon, 2 Aug 2021 08:44:22 GMT'}
{'version': 'v2', 'created': 'Tue, 3 Aug 2021 08:12:46 GMT'}
{'version': 'v3', 'created': 'Thu, 14 Oct 2021 15:33:24 GMT'}]
|
2021-10-15
|
[array(['De Bruyn', 'Maxime', ''], dtype=object)
array(['Lotfi', 'Ehsan', ''], dtype=object)
array(['Buhmann', 'Jeska', ''], dtype=object)
array(['Daelemans', 'Walter', ''], dtype=object)]
|
2,138 |
quant-ph/0406137
|
Andr\'es Sicard
|
Andr\'es Sicard, Mario V\'elez, Juan Ospina
|
A possible hypercomputational quantum algorithm
|
Title changed. Updated to the published version. Oral contribution to
Quantum Information and Computation III, part of the SPIE Defense and
Security Symposium 2005. 8 pages
|
In E. J. Donkor, A. R. Pirich, and H. E. Brandt, editors, "Quantum
Information and Computation III", volume 5815 of Proc. of SPIE. SPIE,
Bellingham, WA, 2005. p. 219-226
|
10.1117/12.602254
| null |
quant-ph cs.LO
| null |
The term `hypermachine' denotes any data processing device (theoretical or
that can be implemented) capable of carrying out tasks that cannot be performed
by a Turing machine. We present a possible quantum algorithm for a classically
non-computable decision problem, Hilbert's tenth problem; more specifically, we
present a possible hypercomputation model based on quantum computation. Our
algorithm is inspired by the one proposed by Tien D. Kieu, but we have selected
the infinite square well instead of the (one-dimensional) simple harmonic
oscillator as the underlying physical system. Our model exploits the quantum
adiabatic process and the characteristics of the representation of the
dynamical Lie algebra su(1,1) associated to the infinite square well.
|
[{'version': 'v1', 'created': 'Fri, 18 Jun 2004 22:06:19 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Jun 2005 22:03:12 GMT'}]
|
2009-11-10
|
[array(['Sicard', 'Andrés', ''], dtype=object)
array(['Vélez', 'Mario', ''], dtype=object)
array(['Ospina', 'Juan', ''], dtype=object)]
|
2,139 |
1911.08390
|
Roger Cohen
|
Roger E. Cohen (1), Aaron M. Geller (2 and 3), Ted von Hippel (4) ((1)
STScI, (2) CIERA, Northwestern U., (3) Adler Planetarium, (4) ERAU)
|
Bayesian Characterization of Main Sequence Binaries in the Old Open
Cluster NGC 188
|
AJ accepted
| null |
10.3847/1538-3881/ab59d7
| null |
astro-ph.SR astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The binary fractions of open and globular clusters yield powerful constraints
on their dynamical state and evolutionary history. We apply publicly available
Bayesian analysis code to a $UBVRIJHK_{S}$ photometric catalog of the old open
cluster NGC 188 to detect and characterize photometric binaries along the
cluster main sequence. This technique has the advantage that it
self-consistently handles photometric errors, missing data in various
bandpasses, and star-by-star prior constraints on cluster membership.
Simulations are used to verify uncertainties and quantify selection biases in
our analysis, illustrating that among binaries with mass ratios >0.5, we
recover the binary fraction to better than 7% in the mean, with no significant
dependence on binary fraction and a mild dependence on assumed mass ratio
distribution. Using our photometric catalog, we recover the majority
(65%$\pm$11%) of spectroscopically identified main sequence binaries, including
8 of the 9 with spectroscopically measured mass ratios. Accounting for
incompleteness and systematics, we derive a mass ratio distribution that rises
toward lower mass ratios (within our $q >$0.5 analysis domain). We observe a
raw binary fraction for solar-type main sequence stars with mass ratios $q
>$0.5 of 42%$\pm$4%, independent of the assumed mass ratio distribution to
within its uncertainties, consistent with literature values for old open
clusters but significantly higher than the field solar-type binary fraction. We
confirm that the binaries identified by our method are more concentrated than
single stars, in agreement with previous studies, and we demonstrate that the
binary nature of those candidates which remain unidentified spectroscopically
is strongly supported by photometry from Gaia DR2.
|
[{'version': 'v1', 'created': 'Tue, 19 Nov 2019 16:38:28 GMT'}]
|
2020-01-08
|
[array(['Cohen', 'Roger E.', '', '2 and 3'], dtype=object)
array(['Geller', 'Aaron M.', '', '2 and 3'], dtype=object)
array(['von Hippel', 'Ted', ''], dtype=object)]
|
2,140 |
1511.08017
|
J. Ricardo Arias-Gonzalez
|
J. Ricardo Arias-Gonzalez
|
A general framework for microscopically reversible processes with memory
|
Former equation (21) has been re-expressed in a more elegant fashion,
in line with the theoretical framework. Furthermore, a sentence has been
added to the concluding paragraphs (p. 6, second column, first paragraph
after a proof) and minor amendments have been applied to the detected errata
| null | null | null |
cond-mat.stat-mech cond-mat.mes-hall physics.bio-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Statistical Mechanics deals with ensembles of microstates that are compatible
with fixed constraints and that on average define a thermodynamic macrostate.
The evolution of a small system is normally subjected to changing constraints
and involve a stochastic dependence on previous events. Here, we develop a
theory for reversible processes with memory that comprises equilibrium
statistics and that converges to the same physics in the limit of independent
events. This framework is based on the characterization of single phase-space
pathways and is used to derive ensemble-average dynamics in stochastic systems
driven by a protocol in the limit of no friction. We show that the state of a
system depends on its history to the extent of attaining a one-to-one
correspondence between states and pathways when memory covers all the previous
events. Equilibrium appears as the consequence of exploring all pathways that
connect two states by all procedures. This theory is useful to interpret
single-molecule experiments in Biophysics and other fields in Nanoscience and
an adequate platform for a general theory of irreversible processes.
|
[{'version': 'v1', 'created': 'Wed, 25 Nov 2015 11:14:47 GMT'}
{'version': 'v2', 'created': 'Tue, 25 Oct 2016 13:13:41 GMT'}]
|
2016-10-26
|
[array(['Arias-Gonzalez', 'J. Ricardo', ''], dtype=object)]
|
2,141 |
0801.2830
|
Kwokwai Chan
|
Kwokwai Chan and Naichung Conan Leung
|
Mirror symmetry for toric Fano manifolds via SYZ transformations
|
v4: final version, to appear in Adv. Math.; v3: 38 pages,
substantially revised and expanded, the role of tropical geometry clarified
in the newly added Subsection 2.2
|
Adv. Math. 223 (2010), no. 3, 797-839
|
10.1016/j.aim.2009.09.009
| null |
math.SG math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct and apply Strominger-Yau-Zaslow mirror transformations to
understand the geometry of the mirror symmetry between toric Fano manifolds and
Landau-Ginzburg models.
|
[{'version': 'v1', 'created': 'Fri, 18 Jan 2008 08:29:32 GMT'}
{'version': 'v2', 'created': 'Fri, 2 May 2008 05:06:35 GMT'}
{'version': 'v3', 'created': 'Tue, 30 Jun 2009 03:12:11 GMT'}
{'version': 'v4', 'created': 'Thu, 1 Oct 2009 03:05:43 GMT'}]
|
2014-02-19
|
[array(['Chan', 'Kwokwai', ''], dtype=object)
array(['Leung', 'Naichung Conan', ''], dtype=object)]
|
2,142 |
1110.3923
|
Rita Bernabei
|
P. Belli (1), R. Bernabei (1,2), F. Cappella (3,4), R. Cerulli (5),
F.A. Danevich (6), S. d'Angelo (1,2), A. Incicchitti (3,4), V.V. Kobychev
(6), D.V. Poda (5,6), V.I. Tretyak (6) ((1) INFN Roma Tor Vergata, (2) Univ.
Roma Tor Vergata, (3) INFN Roma, (4) Univ. Roma, (5) INFN LNGS, (6) INR Kiev)
|
Final results of an experiment to search for 2beta processes in zinc and
tungsten with the help of radiopure ZnWO4 crystal scintillators
|
This is an author-created, un-copyedited version of an article
published in J. Phys. G: Nucl. Part. Phys. IOP Publishing Ltd is not
responsible for any errors or omissions in this version of the manuscript or
any version derived from it. The definitive publisher authenticated version
is available online at doi: 10.1088/0954-3899/38/11/115107
|
J. Phys. G: Nucl. Part. Phys. 38 (2011) 115107
|
10.1088/0954-3899/38/11/115107
| null |
nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A search for the double beta decay of zinc and tungsten isotopes has been
performed with the help of radiopure ZnWO4 crystal scintillators (0.1-0.7 kg)
at the Gran Sasso National Laboratories of the INFN. The total exposure of the
low background measurements is 0.529 kg yr. New improved half-life limits on
the double beta decay modes of 64Zn, 70Zn, 180W, and 186W have been established
at the level of 10^{18}-10^{21} yr. In particular, limits on double electron
capture and electron capture with positron emission in 64Zn have been set:
T_{1/2}(2\nu 2K) > 1.1 10^{19} yr, T_{1/2} (0\nu 2\epsilon) > 3.2 10^{20} yr,
T_{1/2} (2\nu \epsilon \beta^+) > 9.4 10^{20} yr, and T_{1/2} (0\nu \epsilon
\beta^+) > 8.5 10^{20} yr, all at 90% C.L. Resonant neutrinoless double
electron capture in 180W has been restricted on the level of T_{1/2} (0\nu
2\epsilon) > 1.3 10^{18} yr. A new half-life limit on alpha transition of 183W
to the metastable excited level 1/2^- 375 keV of 179Hf has been established:
T_{1/2} > 6.7 10^{20} yr.
|
[{'version': 'v1', 'created': 'Tue, 18 Oct 2011 09:58:12 GMT'}]
|
2011-10-19
|
[array(['Belli', 'P.', ''], dtype=object)
array(['Bernabei', 'R.', ''], dtype=object)
array(['Cappella', 'F.', ''], dtype=object)
array(['Cerulli', 'R.', ''], dtype=object)
array(['Danevich', 'F. A.', ''], dtype=object)
array(["d'Angelo", 'S.', ''], dtype=object)
array(['Incicchitti', 'A.', ''], dtype=object)
array(['Kobychev', 'V. V.', ''], dtype=object)
array(['Poda', 'D. V.', ''], dtype=object)
array(['Tretyak', 'V. I.', ''], dtype=object)]
|
2,143 |
1912.05427
|
Jaume Carbonell
|
Jaume Carbonell, Emiko Hiyama, Rimantas Lazauskas and F. Miguel
Marqu\'es
|
Low-energy neutron scattering on light nuclei and $^{19}$B as a
$^{17}$B-$n$-$n$ three-body system in the unitary limit
|
Proceedings for the 24th edition of European Few Body Conference,
Surrey, UK, 2-4 September 2019
|
SciPost Physics Proceedings 2019
| null | null |
nucl-th nucl-ex quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the evolution of the neutron-nucleus scattering length for the
lightest nuclei. We show that, when increasing the number of neutrons in the
target nucleus, the strong Pauli repulsion is weakened and the balance with the
attractive nucleon-nucleon interaction results into a resonant virtual state in
$^{18}$B.
We describe $^{19}$B in terms of a $^{17}$B-$n$-$n$ three-body system where
the two-body subsystems $^{17}$B-$n$ and $n$-$n$ are unbound (virtual) states
close to the unitary limit. The energy of $^{19}$B ground state is well
reproduced and two low-lying resonances are predicted. Their eventual link with
the Efimov physics is discussed. This model can be extended to describe the
recently discovered resonant states in $^{20,21}$B.
|
[{'version': 'v1', 'created': 'Wed, 11 Dec 2019 16:34:34 GMT'}]
|
2019-12-12
|
[array(['Carbonell', 'Jaume', ''], dtype=object)
array(['Hiyama', 'Emiko', ''], dtype=object)
array(['Lazauskas', 'Rimantas', ''], dtype=object)
array(['Marqués', 'F. Miguel', ''], dtype=object)]
|
2,144 |
1404.3848
|
Zhang Yu
|
Jinzhong Liu and Yu Zhang
|
Gravitational-wave radiation from double compact objects with eLISA in
the Galaxy
| null | null |
10.1086/675721
| null |
astro-ph.SR astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The phase of in-spiral of double compact objects (DCOs: NS+WD, NS+NS, BH+NS,
and BH+BH binaries) in the disk field population of the Galaxy provides a
potential source in the frequency range from $10^{-4}$ to 0.1 Hz, which can be
detected by the European New Gravitational Observatory (NGO: eLISA is derived
from the previous LISA proposal) project. In this frequency range, much
stronger gravitational wave (GW) radiation can be obtained from DCO sources
because they possess more mass than other compact binaries (e.g., close double
white dwarfs). In this study, we aim to calculate the gravitational wave
signals from the resolvable DCO sources in the Galaxy using a binary population
synthesis approach, and to carry out physical properties of these binaries
using Monte Carlo simulations. Combining the sensitivity curve of the eLISA
detector and a confusion-limited noise floor of close double white dwarfs, we
find that only a handful of DCO sources can be detected by the eLISA detector.
The detectable number of DCO sources reaches 160, in the context of
low-frequency eLISA observations we find that the number of NS+WD, NS+NS,
BH+NS, and BH+BH are 132, 16, 3, and 6, respectively.
|
[{'version': 'v1', 'created': 'Tue, 15 Apr 2014 08:53:39 GMT'}
{'version': 'v2', 'created': 'Wed, 16 Apr 2014 09:17:26 GMT'}]
|
2014-04-17
|
[array(['Liu', 'Jinzhong', ''], dtype=object)
array(['Zhang', 'Yu', ''], dtype=object)]
|
2,145 |
nlin/0512012
|
Sibusiso Moyo
|
Sibusiso Moyo and P.G.L. Leach
|
Symmetry Properties of Autonomous Integrating Factors
|
Published in SIGMA (Symmetry, Integrability and Geometry: Methods and
Applications) at http://www.emis.de/journals/SIGMA/
|
SIGMA 1 (2005), 024, 12 pages
|
10.3842/SIGMA.2005.024
| null |
nlin.SI math-ph math.MP
| null |
We study the symmetry properties of autonomous integrating factors from an
algebraic point of view. The symmetries are delineated for the resulting
integrals treated as equations and symmetries of the integrals treated as
functions or configurational invariants. The succession of terms (pattern) is
noted. The general pattern for the solution symmetries for equations in the
simplest form of maximal order is given and the properties of the associated
integrals resulting from this analysis are given.
|
[{'version': 'v1', 'created': 'Tue, 6 Dec 2005 16:38:27 GMT'}]
|
2008-04-24
|
[array(['Moyo', 'Sibusiso', ''], dtype=object)
array(['Leach', 'P. G. L.', ''], dtype=object)]
|
2,146 |
2210.05977
|
Antonio Candelieri
|
Antonio Candelieri, Andrea Ponti, Francesco Archetti
|
BORA: Bayesian Optimization for Resource Allocation
|
31 pages, 12 figures
| null | null | null |
cs.LG cs.AI math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Optimal resource allocation is gaining a renewed interest due its relevance
as a core problem in managing, over time, cloud and high-performance computing
facilities. Semi-Bandit Feedback (SBF) is the reference method for efficiently
solving this problem. In this paper we propose (i) an extension of the optimal
resource allocation to a more general class of problems, specifically with
resources availability changing over time, and (ii) Bayesian Optimization as a
more efficient alternative to SBF. Three algorithms for Bayesian Optimization
for Resource Allocation, namely BORA, are presented, working on allocation
decisions represented as numerical vectors or distributions. The second option
required to consider the Wasserstein distance as a more suitable metric to use
into one of the BORA algorithms. Results on (i) the original SBF case study
proposed in the literature, and (ii) a real-life application (i.e., the
optimization of multi-channel marketing) empirically prove that BORA is a more
efficient and effective learning-and-optimization framework than SBF.
|
[{'version': 'v1', 'created': 'Wed, 12 Oct 2022 07:39:05 GMT'}]
|
2022-10-13
|
[array(['Candelieri', 'Antonio', ''], dtype=object)
array(['Ponti', 'Andrea', ''], dtype=object)
array(['Archetti', 'Francesco', ''], dtype=object)]
|
2,147 |
1903.02291
|
David Kalaj
|
David Kalaj, Jian-Feng Zhu
|
Neohookean deformations of annuli in the higher dimensional Euclidean
space
| null | null | null | null |
math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $n\ge 2$ be an integer and assume that
$\mathbb{A}=\{x\in\mathbf{R}^n:1<|x|<R\}$ and $\A_\ast = \{y \in \mathbf{R}^n:
1 < |y| < R_\ast\}$ be two annuli in Euclidean space $\mathbf{R}^n$. Assume
that $\mathcal{F}(\A, \A_\ast)$ (resp. $\mathcal{R}(\A, \A_\ast)$) be the class
of all orientation preserving (resp. radial) homeomorphisms $h : \A \mapsto
\A_\ast$ in the Sobolev space $\mathcal{W} ^{1,n}(\A, \A_\ast)$ which keep the
boundary circles in the same order. In this paper, we extended the
corresponding results of Iwaniec and Onninen which was published in {\it Math.
Ann.} Vol. 348, 2010.
|
[{'version': 'v1', 'created': 'Wed, 6 Mar 2019 10:26:44 GMT'}]
|
2019-03-07
|
[array(['Kalaj', 'David', ''], dtype=object)
array(['Zhu', 'Jian-Feng', ''], dtype=object)]
|
2,148 |
0808.2303
|
Yves Le Jan
|
Yves Le Jan (LM-Orsay)
|
Markov paths, loops and fields
| null | null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This is an extended version of a series of lectures given in St Flour. It
includes a discussion of relations between the occupation field of Markov loops
with the corresponding free field.
|
[{'version': 'v1', 'created': 'Sun, 17 Aug 2008 18:01:29 GMT'}
{'version': 'v2', 'created': 'Mon, 1 Dec 2008 15:52:15 GMT'}
{'version': 'v3', 'created': 'Tue, 24 Nov 2009 15:45:00 GMT'}
{'version': 'v4', 'created': 'Fri, 10 Sep 2010 13:27:05 GMT'}]
|
2010-09-13
|
[array(['Jan', 'Yves Le', '', 'LM-Orsay'], dtype=object)]
|
2,149 |
math/0303146
|
Daniel C. Reuman
|
Daniel C. Reuman
|
Formulas for the dimensions of some affine Deligne-Lusztig Varieties
|
16 pages, 10 figures
|
Michigan Math. J. 52 (2004), 435-451
| null | null |
math.RT
| null |
Rapoport and Kottwitz defined the affine Deligne-Lusztig varieties
$X_{\tilde{w}}^P(b\sigma)$ of a quasisplit connected reductive group $G$ over
$F = \mathbb{F}_q((t))$ for a parahoric subgroup $P$. They asked which pairs
$(b, \tilde{w})$ give non-empty varieties, and in these cases what dimensions
do these varieties have. This paper answers these questions for $P=I$ an
Iwahori subgroup, in the cases $b=1$, $G=SL_2$, $SL_3$, $Sp_4$. This
information is used to get a formula for the dimensions of the
$X_{\tilde{w}}^K(\sigma)$ (all shown to be non-empty by Rapoport and Kottwitz)
for the above $G$ that supports a general conjecture of Rapoport. Here $K$ is a
special maximal compact subgroup.
|
[{'version': 'v1', 'created': 'Wed, 12 Mar 2003 16:27:30 GMT'}]
|
2007-05-23
|
[array(['Reuman', 'Daniel C.', ''], dtype=object)]
|
2,150 |
0901.2111
|
Rakibur Rahman
|
Rakibur Rahman
|
Consequences of Gravity-Induced Couplings in Theories with Many Particle
Species
|
7 pages; feynman diagrams added, typos corrected; to appear in
Physics Letters B.
|
Phys.Lett.B688:71-74,2010
|
10.1016/j.physletb.2010.03.034
| null |
hep-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In theories with many copies of the Standard Model virtual black hole
exchange may produce effective higher dimensional operators that can be treated
below the cutoff scale as fundamental vertices of interspecies
non-gravitational interaction. We consider the vertex that couples fermions of
one species through magnetic moment to photons of other species, and study the
quantum corrections it generates. In particular, we find kinetic mixing between
photons of different species produced via fermion loops. Diagonalization of
gauge kinetic terms then renders the fermions millicharged under other species'
electromagnetism. We explore some phenomenological consequences of such effects
by considering possible observable signatures in collider experiments and
constraining the interaction strength. The derived bounds are in agreement with
non-democratic nature of micro black hole coupling.
|
[{'version': 'v1', 'created': 'Wed, 14 Jan 2009 21:00:05 GMT'}
{'version': 'v2', 'created': 'Tue, 9 Mar 2010 00:04:31 GMT'}]
|
2014-11-18
|
[array(['Rahman', 'Rakibur', ''], dtype=object)]
|
2,151 |
1403.6632
|
Nikolaos Kavvadias PhD
|
Nikolaos Kavvadias and Spiridon Nikolaidis
|
Design space exploration tools for the ByoRISC configurable processor
family
|
12 pages, 14 figures, 7 tables. Unpublished paper on ByoRISC, an
extensible RISC with MIMO CIs that can outperform most mid-range VLIWs.
Unfortunately Prof. Jorg Henkel destroyed the potential of this submission by
using immoral tactics (neglecting his conflict of interest, changing
reviewers accepting the paper, and requesting impossible additions for the
average lifetime of an Earthling
| null | null | null |
cs.AR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, the ByoRISC (Build your own RISC) configurable
application-specific instruction-set processor (ASIP) family is presented.
ByoRISCs, as vendor-independent cores, provide extensive architectural
parameters over a baseline processor, which can be customized by
application-specific hardware extensions (ASHEs). Such extensions realize
multi-input multi-output (MIMO) custom instructions with local state and
load/store accesses to the data memory. ByoRISCs incorporate a true multi-port
register file, zero-overhead custom instruction decoding, and scalable data
forwarding mechanisms. Given these design decisions, ByoRISCs provide a unique
combination of features that allow their use as architectural testbeds and the
seamless and rapid development of new high-performance ASIPs.
The performance characteristics of ByoRISCs, implemented as
vendor-independent cores, have been evaluated for both ASIC and FPGA
implementations, and it is proved that they provide a viable solution in
FPGA-based system-on-a-chip design. A case study of an image processing
pipeline is also presented to highlight the process of utilizing a ByoRISC
custom processor. A peak performance speedup of up to 8.5$\times$ can be
observed, whereas an average performance speedup of 4.4$\times$ on Xilinx
Virtex-4 targets is achieved. In addition, ByoRISC outperforms an experimental
VLIW architecture named VEX even in its 16-wide configuration for a number of
data-intensive application kernels.
|
[{'version': 'v1', 'created': 'Wed, 26 Mar 2014 11:24:19 GMT'}]
|
2014-03-27
|
[array(['Kavvadias', 'Nikolaos', ''], dtype=object)
array(['Nikolaidis', 'Spiridon', ''], dtype=object)]
|
2,152 |
astro-ph/0312617
|
Gregory Ryskin
|
Gregory Ryskin
|
Abrupt global events in the Earth's history: a physics perspective
|
Final journal version. New title, significant changes. Supersedes v.1
|
Reports on Progress in Physics 73, 122801 (2010)
|
10.1088/0034-4885/73/12/122801
| null |
astro-ph astro-ph.EP physics.geo-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The timeline of the Earth's history reveals quasi-periodicity of the
geological record over the last 542 Myr, on timescales close, in the order of
magnitude, to 1 Myr. What is the origin of this quasi-periodicity? What is the
nature of the global events that define the boundaries of the geological time
scale? I propose that a single mechanism is responsible for all three types of
such events: mass extinctions, geomagnetic polarity reversals, and sea-level
fluctuations. The mechanism is fast, and involves a significant energy release.
The mechanism is unlikely to have astronomical causes, both because of the
energies involved, and because it acts quasi-periodically. It must then be
sought within the Earth itself. And it must be capable of reversing the Earth's
magnetic field. The last requirement makes it incompatible with the consensus
model of the origin of the geomagnetic field - the hydromagnetic dynamo
operating in the Earth's fluid core. In the second part of the paper, I show
that a vast amount of seemingly unconnected geophysical and geological data can
be understood in a unified way if the source of the Earth's main magnetic field
is a ~200-km-thick lithosphere, repeatedly magnetized as a result of
methane-driven oceanic eruptions, which produce ocean flow capable of dynamo
action. The eruptions are driven by the interplay of buoyancy forces and
exsolution of dissolved gas, which accumulates in the oceanic water masses
prone to stagnation and anoxia. Polarity reversals, mass extinctions, and
sequence boundaries are consequences of these eruptions. Unlike the consensus
model of geomagnetism, this scenario is consistent with the paleomagnetic data
showing that "directional changes during a [geomagnetic polarity] reversal can
be astonishingly fast, possibly occurring as a nearly instantaneous jump from
one inclined dipolar state to another in the opposite hemisphere".
|
[{'version': 'v1', 'created': 'Wed, 24 Dec 2003 19:36:23 GMT'}
{'version': 'v2', 'created': 'Fri, 26 Oct 2018 15:03:16 GMT'}]
|
2019-03-04
|
[array(['Ryskin', 'Gregory', ''], dtype=object)]
|
2,153 |
1101.3563
|
Bo Yang
|
Bennett Chow, Peng Lu and Bo Yang
|
A necessary and sufficient condition for Ricci shrinkers to have
positive AVR
|
3 pages
| null | null | null |
math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this short note we observe that a recent result of C.-W. Chen meshes well
with earlier work of H.-D. Cao and D.-T. Zhou, O. Munteanu, J. Carrillo and L.
Ni, and S.-J. Zhang to give a necessary and sufficient condition for complete
noncompact shrinking gradient Ricci solitons to have positive asymptotic volume
ratio.
|
[{'version': 'v1', 'created': 'Tue, 18 Jan 2011 21:24:15 GMT'}]
|
2011-01-20
|
[array(['Chow', 'Bennett', ''], dtype=object)
array(['Lu', 'Peng', ''], dtype=object)
array(['Yang', 'Bo', ''], dtype=object)]
|
2,154 |
2110.03172
|
Joshua Guanzon
|
Joshua J. Guanzon, Matthew S. Winnel, Austin P. Lund, Timothy C. Ralph
|
Ideal Quantum Tele-amplification up to a Selected Energy Cut-off using
Linear Optics
|
6 pages (main) + 16 pages (supplementary), 5 figures (main) + 11
figures (supplementary). Main change is the addition of a new section
describing how our scheme still works well given experimental imperfections +
additional success probability paragraph
| null |
10.1103/PhysRevLett.128.160501
| null |
quant-ph physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a linear optical technique that can implement ideal quantum
tele-amplification up to the $n^\mathrm{th}$ Fock state, where $n$ can be any
positive integer. Here tele-amplification consists of both quantum
teleportation and noiseless linear amplification (NLA). This simple protocol
consists of a beam-splitter and an $(n+1)$-splitter, with $n$ ancillary photons
and detection of $n$ photons. For a given target fidelity, our technique
improves success probability and physical resource costs by orders of magnitude
over current alternative teleportation and NLA schemes. We show how this
protocol can also be used as a loss-tolerant quantum relay for entanglement
distribution and distillation.
|
[{'version': 'v1', 'created': 'Thu, 7 Oct 2021 03:53:47 GMT'}
{'version': 'v2', 'created': 'Thu, 21 Oct 2021 23:27:15 GMT'}
{'version': 'v3', 'created': 'Thu, 23 Dec 2021 00:43:30 GMT'}
{'version': 'v4', 'created': 'Thu, 10 Mar 2022 07:04:59 GMT'}]
|
2022-04-27
|
[array(['Guanzon', 'Joshua J.', ''], dtype=object)
array(['Winnel', 'Matthew S.', ''], dtype=object)
array(['Lund', 'Austin P.', ''], dtype=object)
array(['Ralph', 'Timothy C.', ''], dtype=object)]
|
2,155 |
2108.01171
|
Ali Naji
|
Mohammad Reza Shabanniya, Ali Naji
|
Active dipolar spheroids in shear flow and transverse field: Population
splitting, cross-stream migration and orientational pinning
|
23 pages, 15 figures
|
J. Chem. Phys. 152, 204903 (2020)
|
10.1063/5.0002757
| null |
cond-mat.soft cond-mat.stat-mech physics.bio-ph physics.flu-dyn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the steady-state behavior of active, dipolar, Brownian spheroids in
a planar channel subjected to an imposed Couette flow and an external
transverse field, applied in the 'downward' normal-to-flow direction. The
field-induced torque on active spheroids (swimmers) is taken to be of magnetic
form by assuming that they have a permanent magnetic dipole moment, pointing
along their self-propulsion (swim) direction. Using a continuum approach, we
show that a host of behaviors emerge over the parameter space spanned by the
particle aspect ratio, self-propulsion and shear/field strengths, and the
channel width. The cross-stream migration of the model swimmers is shown to
involve a regime of linear response (quantified by a linear-response factor) in
weak fields. For prolate swimmers, the weak-field behavior crosses over to a
regime of full swimmer migration to the bottom half of the channel in strong
fields. For oblate swimmers, a counterintuitive regime of reverse migration
arises in intermediate fields, where a macroscopic fraction of swimmers
reorient and swim to the top channel half at an acute `upward' angle relative
to the field axis. The diverse behaviors reported here are analyzed based on
the shear-induced population splitting (bimodality) of the swim orientation,
giving two distinct, oppositely polarized, swimmer subpopulations (albeit very
differently for prolate/oblate swimmers) in each channel half. In strong
fields, swimmers of both types exhibit net upstream currents relative to the
laboratory frame. The onsets of full migration and net upstream current depend
on the aspect ratio, enabling efficient particle separation strategies in
microfluidic setups.
|
[{'version': 'v1', 'created': 'Mon, 2 Aug 2021 21:02:24 GMT'}]
|
2021-08-04
|
[array(['Shabanniya', 'Mohammad Reza', ''], dtype=object)
array(['Naji', 'Ali', ''], dtype=object)]
|
2,156 |
1901.04585
|
Merim Dzaferagic
|
Merim Dzaferagic, M. Majid Butt, Maria Murphy, Nicholas Kaminski, and
Nicola Marchetti
|
Agent-Based Modelling Approach for Distributed Decision Support in an
IoT Network
| null | null | null | null |
cs.MA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An increasing number of emerging applications, e.g., internet of things,
vehicular communications, augmented reality, and the growing complexity due to
the interoperability requirements of these systems, lead to the need to change
the tools used for the modeling and analysis of those networks. Agent-Based
Modeling (ABM) as a bottom-up modeling approach considers a network of
autonomous agents interacting with each other, and therefore represents an
ideal framework to comprehend the interactions of heterogeneous nodes in a
complex environment. Here, we investigate the suitability of ABM to model the
communication aspects of a road traffic management system, as an example of an
Internet of Things (IoT) network. We model, analyze and compare various Medium
Access Control (MAC) layer protocols for two different scenarios, namely
uncoordinated and coordinated. Besides, we model the scheduling mechanisms for
the coordinated scenario as a high level MAC protocol by using three different
approaches: Centralized Decision Maker, DESYNC and decentralized learning MAC
(L-MAC). The results clearly show the importance of coordination between
multiple decision makers in order to improve the accuracy of information and
spectrum utilization of the system.
|
[{'version': 'v1', 'created': 'Wed, 9 Jan 2019 13:19:14 GMT'}]
|
2019-01-16
|
[array(['Dzaferagic', 'Merim', ''], dtype=object)
array(['Butt', 'M. Majid', ''], dtype=object)
array(['Murphy', 'Maria', ''], dtype=object)
array(['Kaminski', 'Nicholas', ''], dtype=object)
array(['Marchetti', 'Nicola', ''], dtype=object)]
|
2,157 |
1907.06322
|
S. Williams
|
P. Adamson and S. Williams
|
Effects of Microwave Irradiation on Multiwalled Carbon Nanotubes of
Different Diameters
| null |
Journal of Nanophotonics 12(4), 046014 (2018)
|
10.1117/1.JNP.12.046014
| null |
physics.app-ph cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We have studied the visible and infrared radiation emitted by multi-walled
carbon nano-tubes of different diameters when exposed to 2.45 GHz microwaves. A
comparison of the spectra suggests that multi-walled carbon nano-tubes with
larger diameters emit radiation of greater intensity than those with smaller
diameters. Furthermore, the multi-walled carbon nano-tubes continued to emit
visible and infrared radiation over the course of several microwave-irradiation
cycles, with no degradation in the intensity of the emitted radiation. A
comparison of Raman D- to G-band peak-intensity ratios revealed that
microwave-irradiation did not significantly impact the multi-walled carbon
nano-tubes' defect densities. The results of our experiments suggest that
multi-walled carbon nano-tubes may have the potential for use in lighting
technologies, and that ohmic heating caused by the polarization of the
multi-walled carbon nano-tubes in the microwave field is likely responsible for
the observed emissions of visible and infrared radiation.
|
[{'version': 'v1', 'created': 'Mon, 15 Jul 2019 03:28:39 GMT'}]
|
2019-07-16
|
[array(['Adamson', 'P.', ''], dtype=object)
array(['Williams', 'S.', ''], dtype=object)]
|
2,158 |
math/0603489
|
Henry De Thelin
|
Henry de Thelin
|
Construction of measures with dilation
|
6 pages
| null | null | null |
math.DS
| null |
We give a construction of measures with partial sum of Lyapunov exponents
bounded by below.
|
[{'version': 'v1', 'created': 'Tue, 21 Mar 2006 06:18:58 GMT'}]
|
2007-05-23
|
[array(['de Thelin', 'Henry', ''], dtype=object)]
|
2,159 |
1709.01364
|
Bernd Beschoten
|
Marc Dr\"ogeler, Luca Banszerus, Frank Volmer, Takashi Taniguchi,
Kenji Watanabe, Bernd Beschoten, and Christoph Stampfer
|
Dry-transferred CVD graphene for inverted spin valve devices
|
5 pages, 3 figures
|
Appl. Phys. Lett. 111, 152402 (2017)
|
10.1063/1.5000545
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Integrating high-mobility graphene grown by chemical vapor deposition (CVD)
into spin transport devices is one of the key tasks in graphene spintronics. We
use a van der Waals pickup technique to transfer CVD graphene by hexagonal
boron nitride (hBN) from the copper growth substrate onto predefined Co/MgO
electrodes to build inverted spin valve devices. Two approaches are presented:
(i) a process where the CVD-graphene/hBN stack is first patterned into a bar
and then transferred by a second larger hBN crystal onto spin valve electrodes
and (ii) a direct transfer of a CVD-graphene/hBN stack. We report record high
spin lifetimes in CVD graphene of up to 1.75 ns at room temperature. Overall,
the performances of our devices are comparable to devices fabricated from
exfoliated graphene also revealing nanosecond spin lifetimes. We expect that
our dry transfer methods pave the way towards more advanced device geometries
not only for spintronic applications but also for CVD-graphene-based
nanoelectronic devices in general where patterning of the CVD graphene is
required prior to the assembly of final van der Waals heterostructures.
|
[{'version': 'v1', 'created': 'Tue, 5 Sep 2017 13:00:52 GMT'}]
|
2017-10-11
|
[array(['Drögeler', 'Marc', ''], dtype=object)
array(['Banszerus', 'Luca', ''], dtype=object)
array(['Volmer', 'Frank', ''], dtype=object)
array(['Taniguchi', 'Takashi', ''], dtype=object)
array(['Watanabe', 'Kenji', ''], dtype=object)
array(['Beschoten', 'Bernd', ''], dtype=object)
array(['Stampfer', 'Christoph', ''], dtype=object)]
|
2,160 |
1112.2034
|
Hrvoje Nikolic
|
H. Nikolic
|
Solipsistic hidden variables
|
19 pages, version accepted for publication in Int. J. Quantum Inf
|
Int. J. Quantum Inf. 10 (2012) 1241016
| null | null |
quant-ph hep-th physics.hist-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We argue that it is logically possible to have a sort of both reality and
locality in quantum mechanics. To demonstrate this, we construct a new
quantitative model of hidden variables (HV's), dubbed solipsistic HV's, that
interpolates between the orthodox no-HV interpretation and nonlocal Bohmian
interpretation. In this model, the deterministic point-particle trajectories
are associated only with the essential degrees of freedom of the observer, and
not with the observed objects. In contrast with Bohmian HV's, nonlocality in
solipsistic HV's can be substantially reduced down to microscopic distances
inside the observer. Even if such HV's may look philosophically unappealing to
many, the mere fact that they are logically possible deserves attention.
|
[{'version': 'v1', 'created': 'Fri, 9 Dec 2011 07:42:01 GMT'}
{'version': 'v2', 'created': 'Mon, 7 Jan 2013 12:09:12 GMT'}]
|
2013-03-18
|
[array(['Nikolic', 'H.', ''], dtype=object)]
|
2,161 |
2012.08173
|
Mathieu Xhonneux
|
Mathieu Xhonneux, Joachim Tapparel, Orion Afisiadis, Alexios
Balatsoukas-Stimming and Andreas Burg
|
A Maximum-Likelihood-based Multi-User LoRa Receiver Implemented in GNU
Radio
|
2020 Asilomar Conference on Signals, Systems, and Computers, Pacific
Grove, CA, USA
| null | null | null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
LoRa is a popular low-power wide-area network (LPWAN) technology that uses
spread-spectrum to achieve long-range connectivity and resilience to noise and
interference. For energy efficiency reasons, LoRa adopts a pure ALOHA access
scheme, which leads to reduced network throughput due to packet collisions at
the gateways. To alleviate this issue, in this paper we analyze and implement a
LoRa receiver that is able to decode LoRa packets from two interfering users.
Our main contribution is a two-user detector derived in a maximum-likelihood
fashion using a detailed interference model. As the complexity of the
maximum-likelihood sequence estimation is prohibitive, a complexity-reduction
technique is introduced to enable a practical implementation of the proposed
two-user detector. This detector has been implemented along with an
interference-robust synchronization algorithm on the GNU Radio
Software-Defined-Radio (SDR) platform. The SDR implementation shows the
effectiveness of the proposed method and also allows its experimental
evaluation. Measurements indicate that our detector inherently leverages the
time offset between the two colliding users to separate and demodulate their
contributions.
|
[{'version': 'v1', 'created': 'Tue, 15 Dec 2020 09:48:29 GMT'}]
|
2020-12-16
|
[array(['Xhonneux', 'Mathieu', ''], dtype=object)
array(['Tapparel', 'Joachim', ''], dtype=object)
array(['Afisiadis', 'Orion', ''], dtype=object)
array(['Balatsoukas-Stimming', 'Alexios', ''], dtype=object)
array(['Burg', 'Andreas', ''], dtype=object)]
|
2,162 |
1310.2040
|
Rodney Van Meter
|
Rodney Van Meter
|
Quantum Computing's Classical Problem, Classical Computing's Quantum
Problem
|
Post-proceedings of Quantum Horizons, Taipei, Oct. 2012. 10 pages, no
figures
|
Foundations of Physics 44(8), 819-828, Aug. 2014
|
10.1007/s10701-014-9807-z
| null |
quant-ph cs.ET
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Tasked with the challenge to build better and better computers, quantum
computing and classical computing face the same conundrum: the success of
classical computing systems. Small quantum computing systems have been
demonstrated, and intermediate-scale systems are on the horizon, capable of
calculating numeric results or simulating physical systems far beyond what
humans can do by hand. However, to be commercially viable, they must surpass
what our wildly successful, highly advanced classical computers can already do.
At the same time, those classical computers continue to advance, but those
advances are now constrained by thermodynamics, and will soon be limited by the
discrete nature of atomic matter and ultimately quantum effects. Technological
advances benefit both quantum and classical machinery, altering the competitive
landscape. Can we build quantum computing systems that out-compute classical
systems capable of some $10^{30}$ logic gates per month? This article will
discuss the interplay in these competing and cooperating technological trends.
|
[{'version': 'v1', 'created': 'Tue, 8 Oct 2013 08:36:40 GMT'}]
|
2014-08-05
|
[array(['Van Meter', 'Rodney', ''], dtype=object)]
|
2,163 |
2108.09242
|
Aaron Lauda
|
Nathan Geer, Aaron D. Lauda, Bertrand Patureau-Mirand, Joshua Sussan
|
A Hermitian TQFT from a non-semisimple category of quantum sl(2)-modules
|
18 pages
|
Letters in Mathematical Physics (2022), 112:74
|
10.1007/s11005-022-01570-x
| null |
math.QA math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We endow a non-semisimple category of modules of unrolled quantum sl(2) with
a Hermitian structure. We also prove that the TQFT constructed in
arXiv:1202.3553 using this category is Hermitian. This gives rise to projective
representations of the mapping class group in the group of indefinite unitary
matrices.
|
[{'version': 'v1', 'created': 'Fri, 20 Aug 2021 16:03:51 GMT'}]
|
2022-08-03
|
[array(['Geer', 'Nathan', ''], dtype=object)
array(['Lauda', 'Aaron D.', ''], dtype=object)
array(['Patureau-Mirand', 'Bertrand', ''], dtype=object)
array(['Sussan', 'Joshua', ''], dtype=object)]
|
2,164 |
2004.02775
|
A.K. Srivastava Dr.
|
A.K. Srivastava, Yamini K. Rao, P. Konkol, K. Murawski, M.
Mathioudakis, Sanjiv K. Tiwari, E. Scullion, J.G. Doyle, B.N. Dwivedi
|
Velocity Response of the Observed Explosive Events in the Lower Solar
Atmosphere: I. Formation of the Flowing Cool Loop System
|
In Press; The Astrophysical Journal; 14 Pages; 9 Figures
| null |
10.3847/1538-4357/ab86bb
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We observe plasma flows in cool loops using the Slit-Jaw Imager (SJI) onboard
the Interface Region Imaging Spectrometer (IRIS). Huang et al. (2015) observed
unusually broadened Si IV 1403 angstrom line profiles at the footpoints of such
loops that were attributed to signatures of explosive events (EEs). We have
chosen one such uni-directional flowing cool loop system observed by IRIS where
one of the footpoints is associated with significantly broadened Si IV line
profiles. The line profile broadening indirectly indicates the occurrence of
numerous EEs below the transition region (TR), while it directly infers a large
velocity enhancement /perturbation further causing the plasma flows in the
observed loop system. The observed features are implemented in a model
atmosphere in which a low-lying bi-polar magnetic field system is perturbed in
the chromosphere by a velocity pulse with a maximum amplitude of 200 km/s. The
data-driven 2-D numerical simulation shows that the plasma motions evolve in a
similar manner as observed by IRIS in the form of flowing plasma filling the
skeleton of a cool loop system. We compare the spatio-temporal evolution of the
cool loop system in the framework of our model with the observations, and
conclude that their formation is mostly associated with the velocity response
of the transient energy release above their footpoints in the chromosphere/TR.
Our observations and modeling results suggest that the velocity responses most
likely associated to the EEs could be one of the main candidates for the
dynamics and energetics of the flowing cool loop systems in the lower solar
atmosphere.
|
[{'version': 'v1', 'created': 'Mon, 6 Apr 2020 16:06:40 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Apr 2020 12:00:26 GMT'}]
|
2020-05-27
|
[array(['Srivastava', 'A. K.', ''], dtype=object)
array(['Rao', 'Yamini K.', ''], dtype=object)
array(['Konkol', 'P.', ''], dtype=object)
array(['Murawski', 'K.', ''], dtype=object)
array(['Mathioudakis', 'M.', ''], dtype=object)
array(['Tiwari', 'Sanjiv K.', ''], dtype=object)
array(['Scullion', 'E.', ''], dtype=object)
array(['Doyle', 'J. G.', ''], dtype=object)
array(['Dwivedi', 'B. N.', ''], dtype=object)]
|
2,165 |
1502.02831
|
Yueyun Hu
|
Yueyun Hu and Zhan Shi
|
The most visited sites of biased random walks on trees
|
17 pages
| null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the slow movement of randomly biased random walk $(X_n)$ on a
supercritical Galton--Watson tree, and are interested in the sites on the tree
that are most visited by the biased random walk. Our main result implies
tightness of the distributions of the most visited sites under the annealed
measure. This is in contrast with the one-dimensional case, and provides, to
the best of our knowledge, the first non-trivial example of null recurrent
random walk whose most visited sites are not transient, a question originally
raised by Erd\H{o}s and R\'ev\'esz [11] for simple symmetric random walk on the
line.
|
[{'version': 'v1', 'created': 'Tue, 10 Feb 2015 09:57:41 GMT'}]
|
2015-02-11
|
[array(['Hu', 'Yueyun', ''], dtype=object)
array(['Shi', 'Zhan', ''], dtype=object)]
|
2,166 |
2010.08802
|
Jos\'e-Miguel P\'erez-\'Alvarez
|
Jos\'e Miguel P\'erez-\'Alvarez, Adrian Mos
|
Modeling Support for Domain-Specific Application Definition
| null | null | null | null |
cs.SE cs.PL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we present the modeling support infrastructure for
domain-specific application definition. This consists of a set of meta-models
and the associated generators to allow the definition of reusable and
domain-specific behavior blocks, which can later be used to compose complex
behaviors. In addition we also present the related visual languages that
facilitate the creation of these models.
|
[{'version': 'v1', 'created': 'Sat, 17 Oct 2020 14:41:24 GMT'}]
|
2020-10-20
|
[array(['Pérez-Álvarez', 'José Miguel', ''], dtype=object)
array(['Mos', 'Adrian', ''], dtype=object)]
|
2,167 |
1603.00191
|
Masha Vladimirova
|
F. Fedichkin, T. Guillet, P. Valvin, B. Jouault, C. Brimont, T.
Bretagnon, L. Lahourcade, N. Grandjean, P. Lefebvre, M. Vladimirova
|
Room-temperature transport of indirect excitons in (Al,Ga)N/GaN quantum
wells
|
16 pages, 5 figures
|
Phys. Rev. Applied 6, 014011 (2016)
|
10.1103/PhysRevApplied.6.014011
| null |
cond-mat.mes-hall cond-mat.quant-gas
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report on the exciton propagation in polar (Al,Ga)N/GaN quantum wells over
several micrometers and up to room temperature. The key ingredient to achieve
this result is the crystalline quality of GaN quantum wells (QWs) grown on GaN
template substrate. By comparing microphotoluminescence images of two identical
QWs grown on sapphire and on GaN, we reveal the twofold role played by GaN
substrate in the transport of excitons. First, the lower threading dislocation
densities in such structures yield higher exciton radiative efficiency, thus
limiting nonradiative losses of propagating excitons. Second, the absence of
the dielectric mismatch between the substrate and the epilayer strongly limits
the photon guiding effect in the plane of the structure,making exciton
transport easier to distinguish from photon propagation. Our results pave the
way towards room-temperature gate-controlled exciton transport in wide-bandgap
polar heterostructures.
|
[{'version': 'v1', 'created': 'Tue, 1 Mar 2016 09:09:20 GMT'}]
|
2016-07-27
|
[array(['Fedichkin', 'F.', ''], dtype=object)
array(['Guillet', 'T.', ''], dtype=object)
array(['Valvin', 'P.', ''], dtype=object)
array(['Jouault', 'B.', ''], dtype=object)
array(['Brimont', 'C.', ''], dtype=object)
array(['Bretagnon', 'T.', ''], dtype=object)
array(['Lahourcade', 'L.', ''], dtype=object)
array(['Grandjean', 'N.', ''], dtype=object)
array(['Lefebvre', 'P.', ''], dtype=object)
array(['Vladimirova', 'M.', ''], dtype=object)]
|
2,168 |
math/0409003
|
Federico Ardila
|
Federico Ardila
|
Semimatroids and their Tutte polynomials
|
27 pages, 3 figures
| null | null | null |
math.CO
| null |
We define and study "semimatroids", a class of objects which abstracts the
dependence properties of an affine hyperplane arrangement. We show that
geometric semilattices are precisely the posets of flats of semimatroids. We
define and investigate the Tutte polynomial of a semimatroid. We prove that it
is the universal Tutte-Grothendieck invariant for semimatroids, and we give a
combinatorial interpretation for its non-negative coefficients.
|
[{'version': 'v1', 'created': 'Tue, 31 Aug 2004 23:59:14 GMT'}]
|
2007-05-23
|
[array(['Ardila', 'Federico', ''], dtype=object)]
|
2,169 |
2003.00429
|
Xinwei Chen
|
Xinwei Chen, Ali Taleb Zadeh Kasgari and Walid Saad
|
Deep Learning for Content-based Personalized Viewport Prediction of
360-Degree VR Videos
| null | null |
10.1109/LNET.2020.2977124
| null |
cs.CV cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, the problem of head movement prediction for virtual reality
videos is studied. In the considered model, a deep learning network is
introduced to leverage position data as well as video frame content to predict
future head movement. For optimizing data input into this neural network, data
sample rate, reduced data, and long-period prediction length are also explored
for this model. Simulation results show that the proposed approach yields
16.1\% improvement in terms of prediction accuracy compared to a baseline
approach that relies only on the position data.
|
[{'version': 'v1', 'created': 'Sun, 1 Mar 2020 07:31:50 GMT'}]
|
2020-03-03
|
[array(['Chen', 'Xinwei', ''], dtype=object)
array(['Kasgari', 'Ali Taleb Zadeh', ''], dtype=object)
array(['Saad', 'Walid', ''], dtype=object)]
|
2,170 |
2305.16655
|
Shoko Miyake
|
O. Adriani, Y. Akaike, K. Asano, Y. Asaoka, E. Berti, G. Bigongiari,
W.R. Binns, M. Bongi, P. Brogi, A. Bruno, J.H. Buckley, N. Cannady, G.
Castellini, C. Checchia, M.L. Cherry, G. Collazuol, G.A. de Nolfo, K.
Ebisawa, A. W. Ficklin, H. Fuke, S. Gonzi, T.G. Guzik, T. Hams, K. Hibino, M.
Ichimura, K. Ioka, W. Ishizaki, M.H. Israel, K. Kasahara, J. Kataoka, R.
Kataoka, Y. Katayose, C. Kato, N. Kawanaka, Y. Kawakubo, K. Kobayashi, K.
Kohri, H.S. Krawczynski, J.F. Krizmanic, P. Maestro, P.S. Marrocchesi, A.M.
Messineo, J.W. Mitchell, S. Miyake, A.A. Moiseev, M. Mori, N. Mori, H.M.
Motz, K. Munakata, S. Nakahira, J. Nishimura, S. Okuno, J.F. Ormes, S. Ozawa,
L. Pacini, P. Papini, B.F. Rauch, S.B. Ricciarini, K. Sakai, T. Sakamoto, M.
Sasaki, Y. Shimizu, A. Shiomi, P. Spillantini, F. Stolzi, S. Sugita, A.
Sulaj, M. Takita, T. Tamura, T. Terasawa, S. Torii, Y. Tsunesada, Y.
Uchihori, E. Vannuccini, J.P. Wefel, K. Yamaoka, S. Yanagita, A. Yoshida, K.
Yoshida, W. V. Zober
|
Charge-Sign Dependent Cosmic-Ray Modulation Observed with the
Calorimetric Electron Telescope on the International Space Station
|
main text: 6 pages, 3 figures, supplemental material: 8 pages, 3
figures, 1 table
|
Phys. Rev. Lett. 130, 211001 (2023)
|
10.1103/PhysRevLett.130.211001
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the observation of a charge-sign dependent solar modulation of
galactic cosmic rays (GCRs) with the CALorimetric Electron Telescope onboard
the International Space Station over 6 yr, corresponding to the positive
polarity of the solar magnetic field. The observed variation of proton count
rate is consistent with the neutron monitor count rate, validating our methods
for determining the proton count rate. It is observed by the CALorimetric
Electron Telescope that both GCR electron and proton count rates at the same
average rigidity vary in anticorrelation with the tilt angle of the
heliospheric current sheet, while the amplitude of the variation is
significantly larger in the electron count rate than in the proton count rate.
We show that this observed charge-sign dependence is reproduced by a numerical
``drift model'' of the GCR transport in the heliosphere. This is a clear
signature of the drift effect on the long-term solar modulation observed with a
single detector.
|
[{'version': 'v1', 'created': 'Fri, 26 May 2023 05:56:19 GMT'}]
|
2023-05-29
|
[array(['Adriani', 'O.', ''], dtype=object)
array(['Akaike', 'Y.', ''], dtype=object)
array(['Asano', 'K.', ''], dtype=object)
array(['Asaoka', 'Y.', ''], dtype=object)
array(['Berti', 'E.', ''], dtype=object)
array(['Bigongiari', 'G.', ''], dtype=object)
array(['Binns', 'W. R.', ''], dtype=object)
array(['Bongi', 'M.', ''], dtype=object)
array(['Brogi', 'P.', ''], dtype=object)
array(['Bruno', 'A.', ''], dtype=object)
array(['Buckley', 'J. H.', ''], dtype=object)
array(['Cannady', 'N.', ''], dtype=object)
array(['Castellini', 'G.', ''], dtype=object)
array(['Checchia', 'C.', ''], dtype=object)
array(['Cherry', 'M. L.', ''], dtype=object)
array(['Collazuol', 'G.', ''], dtype=object)
array(['de Nolfo', 'G. A.', ''], dtype=object)
array(['Ebisawa', 'K.', ''], dtype=object)
array(['Ficklin', 'A. W.', ''], dtype=object)
array(['Fuke', 'H.', ''], dtype=object)
array(['Gonzi', 'S.', ''], dtype=object)
array(['Guzik', 'T. G.', ''], dtype=object)
array(['Hams', 'T.', ''], dtype=object)
array(['Hibino', 'K.', ''], dtype=object)
array(['Ichimura', 'M.', ''], dtype=object)
array(['Ioka', 'K.', ''], dtype=object)
array(['Ishizaki', 'W.', ''], dtype=object)
array(['Israel', 'M. H.', ''], dtype=object)
array(['Kasahara', 'K.', ''], dtype=object)
array(['Kataoka', 'J.', ''], dtype=object)
array(['Kataoka', 'R.', ''], dtype=object)
array(['Katayose', 'Y.', ''], dtype=object)
array(['Kato', 'C.', ''], dtype=object)
array(['Kawanaka', 'N.', ''], dtype=object)
array(['Kawakubo', 'Y.', ''], dtype=object)
array(['Kobayashi', 'K.', ''], dtype=object)
array(['Kohri', 'K.', ''], dtype=object)
array(['Krawczynski', 'H. S.', ''], dtype=object)
array(['Krizmanic', 'J. F.', ''], dtype=object)
array(['Maestro', 'P.', ''], dtype=object)
array(['Marrocchesi', 'P. S.', ''], dtype=object)
array(['Messineo', 'A. M.', ''], dtype=object)
array(['Mitchell', 'J. W.', ''], dtype=object)
array(['Miyake', 'S.', ''], dtype=object)
array(['Moiseev', 'A. A.', ''], dtype=object)
array(['Mori', 'M.', ''], dtype=object)
array(['Mori', 'N.', ''], dtype=object)
array(['Motz', 'H. M.', ''], dtype=object)
array(['Munakata', 'K.', ''], dtype=object)
array(['Nakahira', 'S.', ''], dtype=object)
array(['Nishimura', 'J.', ''], dtype=object)
array(['Okuno', 'S.', ''], dtype=object)
array(['Ormes', 'J. F.', ''], dtype=object)
array(['Ozawa', 'S.', ''], dtype=object)
array(['Pacini', 'L.', ''], dtype=object)
array(['Papini', 'P.', ''], dtype=object)
array(['Rauch', 'B. F.', ''], dtype=object)
array(['Ricciarini', 'S. B.', ''], dtype=object)
array(['Sakai', 'K.', ''], dtype=object)
array(['Sakamoto', 'T.', ''], dtype=object)
array(['Sasaki', 'M.', ''], dtype=object)
array(['Shimizu', 'Y.', ''], dtype=object)
array(['Shiomi', 'A.', ''], dtype=object)
array(['Spillantini', 'P.', ''], dtype=object)
array(['Stolzi', 'F.', ''], dtype=object)
array(['Sugita', 'S.', ''], dtype=object)
array(['Sulaj', 'A.', ''], dtype=object)
array(['Takita', 'M.', ''], dtype=object)
array(['Tamura', 'T.', ''], dtype=object)
array(['Terasawa', 'T.', ''], dtype=object)
array(['Torii', 'S.', ''], dtype=object)
array(['Tsunesada', 'Y.', ''], dtype=object)
array(['Uchihori', 'Y.', ''], dtype=object)
array(['Vannuccini', 'E.', ''], dtype=object)
array(['Wefel', 'J. P.', ''], dtype=object)
array(['Yamaoka', 'K.', ''], dtype=object)
array(['Yanagita', 'S.', ''], dtype=object)
array(['Yoshida', 'A.', ''], dtype=object)
array(['Yoshida', 'K.', ''], dtype=object)
array(['Zober', 'W. V.', ''], dtype=object)]
|
2,171 |
1311.0063
|
Giang Nguyen
|
Giang D. Nguyen, Yixiang Gan
|
A multiphase constitutive modeling framework for unsaturated soil
behavior
|
6 pages, 8 figures. Conference: UNSAT2014 Unsaturated Soils: Research
& Applications, Sydney, Australia, 2-4 July 2014
| null | null | null |
cond-mat.soft
|
http://creativecommons.org/licenses/by/3.0/
|
We develop a framework for constitutive modeling of unsaturated soils that
has the embedded elements of lower scale grain to grain contacts. Continuum
models developed from this framework will possess two different phases
idealizing the solid grains and their interactions. As a consequence, two
different constitutive relationships, corresponding to the grain to grain
contact and bulk behavior, co-exist in a constitutive model and govern the
response of the model. To be specific, grain to grain sliding under dry or wet
condition is idealized and appears as a simple contact law embedded in a
continuum framework. There is no need to define plastic strain, as this
quantity naturally emerges at the continuum scale as the consequence of
frictional sliding at the lower scale. In addition, the effective stress can be
naturally worked out from the grain to grain contact law embedded in the model
without being subjected to any interpretation. This, in our opinion, is a
closer representation of unsaturated soil behavior, compared to existing
continuum approaches that map everything onto a single stress-strain
relationship. In this paper, the framework is presented in its simplest form
that takes into account sliding on a single orientation. Grain to grain contact
law with capillary effects is used for the demonstration of the concept, and
the technical details behind it. Generalization of the framework for better
representation of unsaturated soil behavior will also be sketched out.
|
[{'version': 'v1', 'created': 'Thu, 31 Oct 2013 23:43:15 GMT'}
{'version': 'v2', 'created': 'Sun, 26 Jan 2014 00:59:36 GMT'}]
|
2014-01-28
|
[array(['Nguyen', 'Giang D.', ''], dtype=object)
array(['Gan', 'Yixiang', ''], dtype=object)]
|
2,172 |
1612.03216
|
Peter Potash
|
Peter Potash, Alexey Romanov, Anna Rumshisky
|
#HashtagWars: Learning a Sense of Humor
|
10 Pages
| null | null | null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we present a new dataset for computational humor, specifically
comparative humor ranking, which attempts to eschew the ubiquitous binary
approach to humor detection. The dataset consists of tweets that are humorous
responses to a given hashtag. We describe the motivation for this new dataset,
as well as the collection process, which includes a description of our
semi-automated system for data collection. We also present initial experiments
for this dataset using both unsupervised and supervised approaches. Our best
supervised system achieved 63.7% accuracy, suggesting that this task is much
more difficult than comparable humor detection tasks. Initial experiments
indicate that a character-level model is more suitable for this task than a
token-level model, likely due to a large amount of puns that can be captured by
a character-level model.
|
[{'version': 'v1', 'created': 'Fri, 9 Dec 2016 23:28:16 GMT'}
{'version': 'v2', 'created': 'Sat, 15 Apr 2017 18:41:44 GMT'}]
|
2017-04-18
|
[array(['Potash', 'Peter', ''], dtype=object)
array(['Romanov', 'Alexey', ''], dtype=object)
array(['Rumshisky', 'Anna', ''], dtype=object)]
|
2,173 |
1501.04751
|
Giuseppe Cannizzaro
|
Giuseppe Cannizzaro, Khalil Chouk
|
Multidimensional SDEs with singular drift and universal construction of
the polymer measure with white noise potential
|
We improved the presentation, corrected some of the proofs and added
the global existence for the polymer measure in dimension 3
| null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study existence and uniqueness of solution for stochastic differential
equations with distributional drift by giving a meaning to the Stroock-Varadhan
martingale problem associated such equations. The approach we exploit is the
one of paracontrolled distributions introduced in [13]. As a result we make
sense of the three dimensional polymer measure with white noise potential.
|
[{'version': 'v1', 'created': 'Tue, 20 Jan 2015 10:12:18 GMT'}
{'version': 'v2', 'created': 'Sun, 30 Jul 2017 21:13:03 GMT'}]
|
2017-08-01
|
[array(['Cannizzaro', 'Giuseppe', ''], dtype=object)
array(['Chouk', 'Khalil', ''], dtype=object)]
|
2,174 |
physics/0504023
|
Artem Astashenok V
|
A. Astashenok, A. Zaitsev
|
Influence of Coriolis force on propagation and reflection of long waves
| null | null | null | null |
physics.ao-ph
| null |
Influence of Coriolis force on propagation and reflection of the stimulated
long waves generated pulsing and harmonic concentrated sources is studied.
Geostrophic stream are found, is received asymptotics for transition mode. It
is established that in case of presence of rectilinear boundary as a result of
reflection Kelvin wave propagating along a boundary is formed.
|
[{'version': 'v1', 'created': 'Mon, 4 Apr 2005 10:56:13 GMT'}
{'version': 'v2', 'created': 'Thu, 7 Apr 2005 10:44:15 GMT'}]
|
2007-05-23
|
[array(['Astashenok', 'A.', ''], dtype=object)
array(['Zaitsev', 'A.', ''], dtype=object)]
|
2,175 |
2107.13051
|
Tori Hudgins
|
Lauren Engelthaler, Isaac Hellerman, Tori Hudgins
|
A combinatorial approach to counting primitive periodic and primitive
pseudo orbits on circulant graphs
|
36 pages, 2 figures
| null | null | null |
math.CO math-ph math.MP
|
http://creativecommons.org/licenses/by/4.0/
|
For families of 4-regular directed circulant graphs with $n$ vertices, we
count the number of primitive periodic orbits of length up to at least $n$. The
relevant counting techniques are then extended to count the number of primitive
pseudo orbits (sets of distinct primitive periodic orbits) of length up to at
least $n$ that lack self-intersections, or that self-intersect only at
individual vertices repeated exactly twice (2-encounters of length zero), for
two particular families of 4-regular directed circulant graphs. We then regard
these two families of graphs as families of quantum graphs and use the counting
results to compute the variance of the coefficients of the quantum graph's
characteristic polynomial.
|
[{'version': 'v1', 'created': 'Tue, 27 Jul 2021 19:33:55 GMT'}
{'version': 'v2', 'created': 'Tue, 28 Sep 2021 14:20:42 GMT'}]
|
2021-09-29
|
[array(['Engelthaler', 'Lauren', ''], dtype=object)
array(['Hellerman', 'Isaac', ''], dtype=object)
array(['Hudgins', 'Tori', ''], dtype=object)]
|
2,176 |
hep-ph/0105324
|
Matthias Burkardt
|
Matthias Burkardt (New Mexico State University)
|
Generalized Parton Distributions and Distribution of Partons in the
Transverse Plane
|
invited talk at `Workshop on Lepton Scattering, Hadrons and QCD',
Adelaide, March 26 - April 6, 2001, 8 pages, sprocl.sty
| null |
10.1142/9789812799708_0006
| null |
hep-ph
| null |
I discuss the physical interpretation of GPDs in the limit $\xi=0$, where the
$t$ dependence contains information about the distribution of partons in the
transverse plane. GPDs thus allow a simultaneous determination of the
longitudinal momentum and transverse position of partons in the infinite
momentum frame, which also provides a physical interpretation for Ji's angular
momentum sum rule.
|
[{'version': 'v1', 'created': 'Wed, 30 May 2001 16:57:51 GMT'}]
|
2017-08-23
|
[array(['Burkardt', 'Matthias', '', 'New Mexico State University'],
dtype=object) ]
|
2,177 |
0904.4323
|
Kasper Therkildsen
|
Ming He, Kasper T. Therkildsen, Brian B. Jensen, Anders Brusch, and
Jan W. Thomsen, Sergey G. Porsev
|
Isotope shifts of the (3s3p)$^3$P$_{0,1,2}$ - (3s4s)$^3$S$_1$ Mg I
transitions
|
4 pages, 4 figures submitted to PRA
| null |
10.1103/PhysRevA.80.024501
| null |
physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report measurements of the isotope shifts of the (3s3p)$^3$P$_{0,1,2}$ -
(3s4s)$^3$S$_1$ Mg I transitions for the stable isotopes $^{24}$Mg (I=0),
$^{25}$Mg (I=5/2) and $^{26}$Mg (I=0). Furthermore the $^{25}$Mg $^3$S$_1$
hyperfine coefficient A($^3$S$_1$) = (-321.6 $\pm$ 1.5) MHz is extracted and
found to be in excellent agreement with state-of-the-art theoretical
predictions giving A($^3$S$_1$) = -325 MHz and B($^3$S$_1$) $\simeq 10^{-5}$
MHz. Compared to previous measurements, the data presented in this work is
improved up to a factor of ten.
|
[{'version': 'v1', 'created': 'Tue, 28 Apr 2009 07:33:41 GMT'}]
|
2015-05-13
|
[array(['He', 'Ming', ''], dtype=object)
array(['Therkildsen', 'Kasper T.', ''], dtype=object)
array(['Jensen', 'Brian B.', ''], dtype=object)
array(['Brusch', 'Anders', ''], dtype=object)
array(['Thomsen', 'Jan W.', ''], dtype=object)
array(['Porsev', 'Sergey G.', ''], dtype=object)]
|
2,178 |
cond-mat/0301418
|
Ansgar Liebsch
|
A. Liebsch
|
Quasi-particle spectra of perovskites: Enhanced Coulomb correlations at
surfaces
| null | null |
10.1140/epjb/e2003-00122-7
| null |
cond-mat.str-el
| null |
Photoemission spectra of the perovskites Ca$_x$Sr$_{1-x}$VO$_3$,
Ca$_x$La$_{1-x}$VO$_3$, and SrRuO$_3$ indicate that Coulomb correlations are
more pronounced at the surface than in the bulk. To investigate this effect we
use the dynamical mean field theory combined with the Quantum Monte Carlo
technique and evaluate the multi-orbital self-energy. These systems exhibit
different degrees of band filling and range from metallic to insulating. The
key input in the calculations is the layer dependent local density of states
which we obtain from a tight-binding approach for semi-infinite cubic systems.
As a result of the planar character of the perovskite $t_{2g}$ bands near the
Fermi level, the reduced coordination number of surface atoms gives rise to a
significant narrowing of the surface density of those subbands which hybridize
preferentially in planes normal to the surface. Although the total band width
coincides with the one in the bulk, the effective band narrowing at the surface
leads to stronger correlation features in the quasi-particle spectra. In
particular, the weight of the quasi-particle peak near $E_F$ is reduced and the
amplitude of the lower and upper Hubbard bands is enhanced, in agreement with
experiments.
|
[{'version': 'v1', 'created': 'Wed, 22 Jan 2003 14:27:49 GMT'}]
|
2009-11-10
|
[array(['Liebsch', 'A.', ''], dtype=object)]
|
2,179 |
1608.03151
|
Arvind Ayyer
|
Arvind Ayyer
|
Squareness for the Monopole-Dimer model
|
21 pages, 7 figures, minor improvements, final version
|
Annals of Combinatorics, Volume 24, Issue 2 (2020), 237-255
|
10.1007/s00026-019-00480-5
| null |
math.CO cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The monopole-dimer model introduced recently is an exactly-solvable signed
generalisation of the dimer model. We show that the partition function of the
monopole-dimer model on a graph invariant under a fixed-point free involution
is a perfect square. We give a combinatorial interpretation of the square-root
of the partition function for such graphs in terms of a monopole-dimer model on
a new kind of graph with two types of edges which we call a dicot. The
partition function of the latter can be written as a determinant, this time of
a complex adjacency matrix. This formulation generalises T. T. Wu's assignment
of imaginary orientation for the grid graph to planar dicots. As an
application, we compute the partition function for a family of non-planar
dicots with positive weights.
|
[{'version': 'v1', 'created': 'Wed, 10 Aug 2016 12:35:53 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Jan 2020 11:02:40 GMT'}]
|
2020-06-16
|
[array(['Ayyer', 'Arvind', ''], dtype=object)]
|
2,180 |
2211.16207
|
Naoki Imai
|
Naoki Imai and Jean-Stefan Koskivirta
|
Weights of mod $p$ automorphic forms and partial Hasse invariants
|
47 pages, with an appendix by Wushi Goldring
| null | null | null |
math.NT math.AG math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For a connected, reductive group $G$ over a finite field endowed with a
cocharacter $\mu$, we define the zip cone of $(G,\mu)$ as the cone of all
possible weights of mod $p$ automorphic forms on the stack of $G$-zips. This
cone is conjectured to coincide with the cone of weights of characteristic $p$
automorphic forms for Hodge-type Shimura varieties of good reduction. We prove
in full generality that the cone of weights of characteristic $0$ automorphic
forms is contained in the zip cone, which gives further evidence to this
conjecture. Furthermore, we determine exactly when the zip cone is generated by
the weights of partial Hasse invariants, which is a group-theoretical
generalization of a result of Diamond--Kassaei and Goldring--Koskivirta.
|
[{'version': 'v1', 'created': 'Tue, 29 Nov 2022 13:43:09 GMT'}]
|
2022-11-30
|
[array(['Imai', 'Naoki', ''], dtype=object)
array(['Koskivirta', 'Jean-Stefan', ''], dtype=object)]
|
2,181 |
1403.0881
|
Turchin Victor
|
Natalia Dobrinskaya, Victor Tourtchine
|
Homology of non-$k$-overlapping discs
|
29 pages
| null | null | null |
math.AT math.CO math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we describe the homology and cohomology of some natural
bimodules over the little discs operad, whose components are configurations of
non-$k$-overlapping discs. At the end we briefly explain how this algebraic
structure intervenes in the study of spaces of non-$k$-equal immersions.
|
[{'version': 'v1', 'created': 'Tue, 4 Mar 2014 18:22:02 GMT'}]
|
2014-03-05
|
[array(['Dobrinskaya', 'Natalia', ''], dtype=object)
array(['Tourtchine', 'Victor', ''], dtype=object)]
|
2,182 |
hep-ph/0511331
|
Gilberto Tavares-Velasco
|
Adriana Cordero-Cid, G. Tavares-Velasco, J.J. Toscano
|
Implications of a very light pseudoscalar boson on lepton flavor
violation
|
6 pages, 3 figures, REVTEX style
|
Phys.Rev.D72:117701,2005
|
10.1103/PhysRevD.72.117701
| null |
hep-ph
| null |
A long-lived very light pseudoscalar boson would favor lepton flavor
violating transitions of charged leptons. Its implications on the l_i --> l_j
\gamma \gamma, and l_i --> l_j e^+ e^- transitions are investigated. Assuming 2
m_e < m_\phi <m_\mu, it is found that the inequality B(l_i --> l_j \gamma
\gamma)<B(l_i --> l_j e^+ e^-) is hold. The experimental constraints on the
decays l_i --> l_j \gamma, l_i --> l_j l_k l_k, and l_i --> l_j \gamma \gamma
are used to bound the \phi l_i l_j couplings.
|
[{'version': 'v1', 'created': 'Tue, 29 Nov 2005 19:12:20 GMT'}]
|
2011-03-31
|
[array(['Cordero-Cid', 'Adriana', ''], dtype=object)
array(['Tavares-Velasco', 'G.', ''], dtype=object)
array(['Toscano', 'J. J.', ''], dtype=object)]
|
2,183 |
0809.1839
|
Tam\'as Temesv\'ari
|
Tam\'as Temesv\'ari
|
Almeida-Thouless transition below six dimensions
|
5 pages, 1 figure
|
Phys. Rev. B 78, 220401(R) (2008)
|
10.1103/PhysRevB.78.220401
| null |
cond-mat.dis-nn cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The existence of an Almeida-Thouless (AT) instability surface below the upper
critical dimension 6 is demonstrated in the generic replica symmetric field
theory. Renormalization flows from around the zero-field fixed point are
investigated. By introducing the temperature and magnetic field dependence of
the bare parameters, the fate of the AT line can be followed from mean field
(infinite dimensions) down to d<6.
|
[{'version': 'v1', 'created': 'Wed, 10 Sep 2008 16:58:56 GMT'}]
|
2008-12-04
|
[array(['Temesvári', 'Tamás', ''], dtype=object)]
|
2,184 |
1111.5973
|
Fernand Pelletier
|
Fernand Pelletier, Rebiha Saffidine
|
Snakes and articulated arms in an Hilbert space
| null | null | null | null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The purpose of this paper is to give an illustration of results on
integrability of distributions and orbits of vector fields on Banach manifolds
obtained in [Pe] and [LaPe]. Using arguments and results of these papers, in
the context of a separable Hilbert space, we give a generalization of a Theorem
of accessibility contained in [Ha], [Ro] and proved for a finite dimensional
Hilbert space
|
[{'version': 'v1', 'created': 'Fri, 25 Nov 2011 13:01:25 GMT'}]
|
2011-11-28
|
[array(['Pelletier', 'Fernand', ''], dtype=object)
array(['Saffidine', 'Rebiha', ''], dtype=object)]
|
2,185 |
2010.03304
|
Aristides Kontogeorgis
|
Aristides Kontogeorgis, Ioannis Tsouknidas
|
A generating set for the canonical ideal of HKG-curves
|
17 pages
| null | null | null |
math.AG math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The canonical ideal for Harbater Katz Gabber covers satisfying the conditions
of Petri's theorem is studied and an explicit non-singular model of the above
curves is given.
|
[{'version': 'v1', 'created': 'Wed, 7 Oct 2020 09:31:11 GMT'}]
|
2020-10-08
|
[array(['Kontogeorgis', 'Aristides', ''], dtype=object)
array(['Tsouknidas', 'Ioannis', ''], dtype=object)]
|
2,186 |
2305.12869
|
Bauyrzhan Sartayev
|
B.K. Sartayev
|
Some generalizations of the variety of transposed Poisson algebras
|
7 p, changed the title
| null | null | null |
math.RA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is shown that the variety of transposed Poisson algebras coincides with
the variety of Gelfand-Dorfman algebras in which the Novikov multiplication is
commutative. The Grobner-Shirshov basis for the transposed Poisson operad is
calculated up to degree 4. Furthermore, we demonstrate that transposed Poisson
algebras are F-manifolds. We verify that the special identities of the variety
of GD-algebras hold in transposed Poisson algebras. Finally, we propose a
conjecture stating that transposed Poisson algebras are special, i.e., can be
embedded into a differential Poisson algebra.
|
[{'version': 'v1', 'created': 'Mon, 22 May 2023 09:48:58 GMT'}
{'version': 'v2', 'created': 'Mon, 29 May 2023 14:16:59 GMT'}]
|
2023-05-30
|
[array(['Sartayev', 'B. K.', ''], dtype=object)]
|
2,187 |
0803.2671
|
Megan McClure
|
M. L. McClure, Kaem Anderson, Kirk Bardahl
|
Non-isolated dynamic black holes and white holes
|
To appear in Physical Review D
|
Phys.Rev.D77:104008,2008
|
10.1103/PhysRevD.77.104008
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Modifying the Kerr-Schild transformation used to generate black and white
hole spacetimes, new dynamic black and white holes are obtained using a
time-dependent Kerr-Schild scalar field. Physical solutions are found for black
holes that shrink with time and for white holes that expand with time. The
black hole spacetimes are physical only in the vicinity of the black hole, with
the physical region increasing in radius with time. The white hole spacetimes
are physical throughout. Unlike the standard Schwarzschild solution the
singularities are non-isolated, since the time-dependence introduces a
mass-energy distribution. The surfaces in the metrics where g_{tt}=g^{rr}=0 are
dynamic, moving inward with time for the black holes and outward for the white
holes, which leads to a question of whether these spacetimes truly have event
horizons--a problem shared with Vaidya's cosmological black hole spacetimes. By
finding a surface that shrinks or expands at the same rate as the null
geodesics move, and within which null geodesics move inward or outward faster
than the surfaces shrink or expand respectively, it is verified that these do
in fact behave like black and white holes.
|
[{'version': 'v1', 'created': 'Tue, 18 Mar 2008 16:37:46 GMT'}]
|
2008-11-26
|
[array(['McClure', 'M. L.', ''], dtype=object)
array(['Anderson', 'Kaem', ''], dtype=object)
array(['Bardahl', 'Kirk', ''], dtype=object)]
|
2,188 |
1709.01393
|
Serhii Bardyla
|
Serhii Bardyla
|
On universal objects in the class of graph inverse semigroups
| null | null | null | null |
math.GN math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we show that polycyclic monoids are universal objects in the
class of graph inverse semigroups. In particular, we prove that a graph inverse
semigroup $G(E)$ over a directed graph $E$ embeds into the polycyclic monoid
$\mathcal{P}_{\lambda}$ where $\lambda=|G(E)|$. We show that each graph inverse
semigroup $G(E)$ admits the coarsest inverse semigroup topology $\tau$.
Moreover, each injective homomorphism from $(G(E),\tau)$ to the
$(\mathcal{P}_{|G(E)|},\tau)$ is a topological embedding.
|
[{'version': 'v1', 'created': 'Wed, 30 Aug 2017 19:31:03 GMT'}
{'version': 'v2', 'created': 'Thu, 1 Mar 2018 20:52:04 GMT'}
{'version': 'v3', 'created': 'Tue, 9 Oct 2018 20:25:39 GMT'}]
|
2018-10-11
|
[array(['Bardyla', 'Serhii', ''], dtype=object)]
|
2,189 |
astro-ph/0409380
|
Keith Vanderlinde
|
D. Barkats, C. Bischoff, P. Farese, L. Fitzpatrick, T. Gaier, J. O.
Gundersen, M. M. Hedman, L. Hyatt, J. J. McMahon, D. Samtleben, S. T. Staggs,
K. Vanderlinde, B. Winstein
|
First measurements of the polarization of the cosmic microwave
background radiation at small angular scales from CAPMAP
|
4 pages, 2 figures; corrected formatting and comments of second
version, identical in substance. In the first version the wrong concordance
model was used, results (fit to multiplier to concordance model) and figures
have been updated to the proper one. In the first version the central 68%
regions were quoted, while now the 68% confidence intervals of highest
posterior density are given
|
Astrophys.J.619:L127-L130,2005
|
10.1086/428285
| null |
astro-ph
| null |
Polarization results from the Cosmic Anisotropy Polarization MAPper (CAPMAP)
experiment are reported. These are based upon 433 hours, after cuts, observing
a 2 square degree patch around the North Celestial Pole (NCP) with four 90 GHz
correlation polarimeters coupled to optics defining $4\arcmin$ beams. The
E-mode flat bandpower anisotropy within $\ell=940^{+330}_{-300}$ is measured as
66$^{+69}_{-29} \mu$K$^2$; the 95% Confidence level upper limit for B-mode
power within $\ell=1050^{+590}_{-520}$ is measured as 38 $\mu$K$^2$.
|
[{'version': 'v1', 'created': 'Wed, 15 Sep 2004 19:36:57 GMT'}
{'version': 'v2', 'created': 'Sat, 26 Feb 2005 18:19:05 GMT'}
{'version': 'v3', 'created': 'Wed, 2 Mar 2005 22:08:17 GMT'}]
|
2011-05-12
|
[array(['Barkats', 'D.', ''], dtype=object)
array(['Bischoff', 'C.', ''], dtype=object)
array(['Farese', 'P.', ''], dtype=object)
array(['Fitzpatrick', 'L.', ''], dtype=object)
array(['Gaier', 'T.', ''], dtype=object)
array(['Gundersen', 'J. O.', ''], dtype=object)
array(['Hedman', 'M. M.', ''], dtype=object)
array(['Hyatt', 'L.', ''], dtype=object)
array(['McMahon', 'J. J.', ''], dtype=object)
array(['Samtleben', 'D.', ''], dtype=object)
array(['Staggs', 'S. T.', ''], dtype=object)
array(['Vanderlinde', 'K.', ''], dtype=object)
array(['Winstein', 'B.', ''], dtype=object)]
|
2,190 |
2211.09033
|
Alessio Bottini
|
Alessio Bottini
|
Towards a modular construction of OG10
|
36 pages
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct the first example of a stable hyperholomorphic vector bundle of
rank five on every hyper-K\"ahler manifold of $\mathrm{K3}^{[2]}$-type whose
deformation space is smooth of dimension ten. Its moduli space is birational to
a hyper-K\"ahler manifold of type OG10. This provides evidence for the
expectation that moduli spaces of sheaves on a hyper-K\"ahler could lead to new
examples of hyper-K\"ahler manifolds.
|
[{'version': 'v1', 'created': 'Wed, 16 Nov 2022 16:41:59 GMT'}]
|
2022-11-17
|
[array(['Bottini', 'Alessio', ''], dtype=object)]
|
2,191 |
2001.06808
|
Daichi Nishio
|
Daichi Nishio, Daiki Kuyoshi, Toi Tsuneda and Satoshi Yamane
|
Discriminator Soft Actor Critic without Extrinsic Rewards
| null | null | null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is difficult to be able to imitate well in unknown states from a small
amount of expert data and sampling data. Supervised learning methods such as
Behavioral Cloning do not require sampling data, but usually suffer from
distribution shift. The methods based on reinforcement learning, such as
inverse reinforcement learning and generative adversarial imitation learning
(GAIL), can learn from only a few expert data. However, they often need to
interact with the environment. Soft Q imitation learning addressed the
problems, and it was shown that it could learn efficiently by combining
Behavioral Cloning and soft Q-learning with constant rewards. In order to make
this algorithm more robust to distribution shift, we propose Discriminator Soft
Actor Critic (DSAC). It uses a reward function based on adversarial inverse
reinforcement learning instead of constant rewards. We evaluated it on PyBullet
environments with only four expert trajectories.
|
[{'version': 'v1', 'created': 'Sun, 19 Jan 2020 10:45:35 GMT'}
{'version': 'v2', 'created': 'Thu, 30 Jan 2020 15:39:22 GMT'}
{'version': 'v3', 'created': 'Fri, 31 Jan 2020 12:39:52 GMT'}]
|
2020-02-03
|
[array(['Nishio', 'Daichi', ''], dtype=object)
array(['Kuyoshi', 'Daiki', ''], dtype=object)
array(['Tsuneda', 'Toi', ''], dtype=object)
array(['Yamane', 'Satoshi', ''], dtype=object)]
|
2,192 |
2006.03930
|
Christopher Deloglos
|
Christopher Deloglos, Carl Elks, and Ashraf Tantawy
|
An Attacker Modeling Framework for the Assessment of Cyber-Physical
Systems Security
| null | null |
10.1007/978-3-030-54549-9_10
| null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Characterizing attacker behavior with respect to Cyber-Physical Systems is
important to assuring the security posture and resilience of these systems.
Classical cyber vulnerability assessment approaches rely on the knowledge and
experience of cyber-security experts to conduct security analyses and can be
inconsistent where the experts' knowledge and experience are lacking. This
paper proposes a flexible attacker modeling framework that aids in the security
analysis process by simulating a diverse set of attacker behaviors to predict
attack progression and provide consistent system vulnerability analysis. The
model proposes an expanded architecture of vulnerability databases to maximize
its effectiveness and consistency in detecting CPS vulnerabilities while being
compatible with existing vulnerability databases. The model has the power to be
implemented and simulated against an actual or virtual CPS. Execution of the
attacker model is demonstrated against a simulated industrial control system
architecture, resulting in a probabilistic prediction of attacker behavior.
|
[{'version': 'v1', 'created': 'Sat, 6 Jun 2020 18:16:36 GMT'}
{'version': 'v2', 'created': 'Tue, 16 Mar 2021 21:17:51 GMT'}]
|
2021-03-18
|
[array(['Deloglos', 'Christopher', ''], dtype=object)
array(['Elks', 'Carl', ''], dtype=object)
array(['Tantawy', 'Ashraf', ''], dtype=object)]
|
2,193 |
1610.00327
|
Chen Hajaj
|
Chen Hajaj, Noam Hazon and David Sarne
|
Improving Comparison Shopping Agents' Competence through Selective Price
Disclosure
|
20 pages, 20 figures, 4 tables, Electronic Commerce Research and
Applications 2015
|
Electronic Commerce Research and Applications Volume 14, Issue 6,
October-November 2015, Pages 563-581
|
10.1016/j.elerap.2015.08.006
| null |
cs.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The plethora of comparison shopping agents (CSAs) in today's markets enables
buyers to query more than a single CSA when shopping, and an inter-CSAs
competition naturally arises. We suggest a new approach, termed "selective
price disclosure", which improves the attractiveness of a CSA by removing some
of the prices in the outputted list. The underlying idea behind this approach
is to affect the buyer's beliefs regarding the chance of obtaining more
attractive prices. The paper presents two methods, which are suitable for
fully-rational buyers, for deciding which prices among those known to the CSA
should be disclosed. The effectiveness and efficiency of the methods are
evaluated using real data collected from five CSAs. The methods are also
evaluated with human subjects, showing that selective price disclosure can be
highly effective in this case as well, however, the disclosed subset of prices
should be extracted in a different (simplistic) manner.
|
[{'version': 'v1', 'created': 'Sun, 2 Oct 2016 18:15:10 GMT'}]
|
2016-11-08
|
[array(['Hajaj', 'Chen', ''], dtype=object)
array(['Hazon', 'Noam', ''], dtype=object)
array(['Sarne', 'David', ''], dtype=object)]
|
2,194 |
dg-ga/9701005
|
Chen Qing
|
Qing Chen
|
On the total curvature of minimal annuli in $R^3$ and Nitsche's
conjecture
|
Amstex, 9 pages
| null | null | null |
dg-ga math.DG
| null |
We present a proof of the generalized Nitsche's conjecture proposed by
W.H.Meeks III and H. Rosenberg: For $t\ge 0$, let $P_t$ denote the horizontal
plane of height $t$ over the $x_1,x_2$ plane. Suppose that $M \subset R^3$ is a
minimal annulus with the boundary contains in $P_0$ and that $M$ intersects
every $P_t$ in a simple closed curve. Then $M$ has finite total curvature. As a
consequence, we show that every properly embedded minimal surface of finite
topology in $R^3$ with more than one end has finite total curvature.
|
[{'version': 'v1', 'created': 'Thu, 16 Jan 1997 07:45:28 GMT'}]
|
2008-02-03
|
[array(['Chen', 'Qing', ''], dtype=object)]
|
2,195 |
2005.02841
|
Silvia Gremes-Cordero PhD
|
S Gremes Cordero, E. Rogers, Y. Fan
|
Improvement of Wavewatch III output through a wind speed modification
based in boundary layer temperature variability
|
21 pages, 7 figures, 1 table
| null | null | null |
physics.ao-ph physics.flu-dyn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present here an empirical method aimed at decreasing the error in the
significant wave height calculated through the Wave Watch model. The errors are
calculated as the difference between the modeled and the locally observed
measurement. We hypothesize that this error would be reduced if the model used
a well calibrated method to account for thermal variations within the surface
boundary layer. We compared then this error for 2015 to the air sea temperature
difference in order to find a potential relationship among them. The
statistical analysis performed show a clear correlation between these
variables, hinting for the need of introducing a correction for stability based
on a linear relationship between the error and the air ocean temperature
difference.
|
[{'version': 'v1', 'created': 'Fri, 24 Apr 2020 16:07:11 GMT'}]
|
2020-05-07
|
[array(['Cordero', 'S Gremes', ''], dtype=object)
array(['Rogers', 'E.', ''], dtype=object)
array(['Fan', 'Y.', ''], dtype=object)]
|
2,196 |
2108.02515
|
Federica Lago
|
Sebastiano Verde, Cecilia Pasquini, Federica Lago, Alessandro Goller,
Francesco GB De Natale, Alessandro Piva, and Giulia Boato
|
Multi-clue reconstruction of sharing chains for social media images
| null | null | null | null |
cs.MM
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
The amount of multimedia content shared everyday, combined with the level of
realism reached by recent fake-generating technologies, threatens to impair the
trustworthiness of online information sources. The process of uploading and
sharing data tends to hinder standard media forensic analyses, since multiple
re-sharing steps progressively hide the traces of past manipulations. At the
same time though, new traces are introduced by the platforms themselves,
enabling the reconstruction of the sharing history of digital objects, with
possible applications in information flow monitoring and source identification.
In this work, we propose a supervised framework for the reconstruction of image
sharing chains on social media platforms. The system is structured as a cascade
of backtracking blocks, each of them tracing back one step of the sharing chain
at a time. Blocks are designed as ensembles of classifiers trained to analyse
the input image independently from one another by leveraging different feature
representations that describe both content and container of the media object.
Individual decisions are then properly combined by a late fusion strategy.
Results highlight the advantages of employing multiple clues, which allow
accurately tracing back up to three steps along the sharing chain.
|
[{'version': 'v1', 'created': 'Thu, 5 Aug 2021 10:52:46 GMT'}]
|
2021-08-06
|
[array(['Verde', 'Sebastiano', ''], dtype=object)
array(['Pasquini', 'Cecilia', ''], dtype=object)
array(['Lago', 'Federica', ''], dtype=object)
array(['Goller', 'Alessandro', ''], dtype=object)
array(['De Natale', 'Francesco GB', ''], dtype=object)
array(['Piva', 'Alessandro', ''], dtype=object)
array(['Boato', 'Giulia', ''], dtype=object)]
|
2,197 |
1705.00388
|
Min Sha
|
Florian Luca, Min Sha and Igor E. Shparlinski
|
On two functions arising in the study of the Euler and Carmichael
quotients
| null | null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate two arithmetic functions naturally occurring in the study of
the Euler and Carmichael quotients. The functions are related to the frequency
of vanishing of the Euler and Carmichael quotients. We obtain several results
concerning the relations between these functions as well as their typical and
extreme values.
|
[{'version': 'v1', 'created': 'Sun, 30 Apr 2017 23:43:18 GMT'}]
|
2017-05-02
|
[array(['Luca', 'Florian', ''], dtype=object)
array(['Sha', 'Min', ''], dtype=object)
array(['Shparlinski', 'Igor E.', ''], dtype=object)]
|
2,198 |
2009.10367
|
Ping-En Lu
|
Ping-En Lu and Cheng-Shang Chang
|
Explainable, Stable, and Scalable Graph Convolutional Networks for
Learning Graph Representation
|
This manuscript was submitted to IEEE Transactions on Neural Networks
and Learning Systems (IEEE TNNLS) on September 22, 2020, and is being under
reviewed. This work was supported by the Ministry of Science and Technology
(MOST) of Taiwan (R.O.C.) under Project MOST108-2221-E007-016-MY3.
(Corresponding author: Ping-En Lu.)
| null | null | null |
cs.LG cs.SI stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The network embedding problem that maps nodes in a graph to vectors in
Euclidean space can be very useful for addressing several important tasks on a
graph. Recently, graph neural networks (GNNs) have been proposed for solving
such a problem. However, most embedding algorithms and GNNs are difficult to
interpret and do not scale well to handle millions of nodes. In this paper, we
tackle the problem from a new perspective based on the equivalence of three
constrained optimization problems: the network embedding problem, the trace
maximization problem of the modularity matrix in a sampled graph, and the
matrix factorization problem of the modularity matrix in a sampled graph. The
optimal solutions to these three problems are the dominant eigenvectors of the
modularity matrix. We proposed two algorithms that belong to a special class of
graph convolutional networks (GCNs) for solving these problems: (i) Clustering
As Feature Embedding GCN (CAFE-GCN) and (ii) sphere-GCN. Both algorithms are
stable trace maximization algorithms, and they yield good approximations of
dominant eigenvectors. Moreover, there are linear-time implementations for
sparse graphs. In addition to solving the network embedding problem, both
proposed GCNs are capable of performing dimensionality reduction. Various
experiments are conducted to evaluate our proposed GCNs and show that our
proposed GCNs outperform almost all the baseline methods. Moreover, CAFE-GCN
could be benefited from the labeled data and have tremendous improvements in
various performance metrics.
|
[{'version': 'v1', 'created': 'Tue, 22 Sep 2020 07:49:46 GMT'}]
|
2020-09-23
|
[array(['Lu', 'Ping-En', ''], dtype=object)
array(['Chang', 'Cheng-Shang', ''], dtype=object)]
|
2,199 |
1009.5071
|
Jihn E. Kim
|
Jihn E. Kim
|
Self-tuning of the cosmological constant
|
12 pages with 8 figures
|
J.Phys.Conf.Ser.259:012005,2010
|
10.1088/1742-6596/259/1/012005
| null |
hep-th astro-ph.CO hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Here, I discuss the cosmological constant (CC) problems, in particular paying
attention to the vanishing cosmological constant. There are three cosmological
constant problems in particle physics. Hawking's idea of calculating the
probability amplitude for our Universe is peaked at CC = 0 which I try to
obtain after the initial inflationary period using a self-tuning model. I
review what has been discussed on the Hawking type calculation, and present a
(probably) correct way to calculate the amplitude, and show that the
Kim-Kyae-Lee self-tuning model allows a finite range of parameters for the CC =
0 to have a singularly large probability, approached from the AdS side.
|
[{'version': 'v1', 'created': 'Sun, 26 Sep 2010 08:22:58 GMT'}]
|
2011-01-04
|
[array(['Kim', 'Jihn E.', ''], dtype=object)]
|
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