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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
18,900 |
1705.07561
|
Rakshith Jagannath
|
Rakshith Jagannath
|
Detection Estimation and Grid matching of Multiple Targets with Single
Snapshot Measurements
| null | null | null | null |
stat.AP cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we explore the problems of detecting the number of narrow-band,
far-field targets and estimating their corresponding directions from single
snapshot measurements. The principles of sparse signal recovery (SSR) are used
for the single snapshot detection and estimation of multiple targets. In the
SSR framework, the DoA estimation problem is grid based and can be posed as the
lasso optimization problem. However, the SSR framework for DoA estimation gives
rise to the grid mismatch problem, when the unknown targets (sources) are not
matched with the estimation grid chosen for the construction of the array
steering matrix at the receiver. The block sparse recovery framework is known
to mitigate the grid mismatch problem by jointly estimating the targets and
their corresponding offsets from the estimation grid using the group lasso
estimator. The corresponding detection problem reduces to estimating the
optimal regularization parameter ($\tau$) of the lasso (in case of perfect
grid-matching) or group-lasso estimation problem for achieving the required
probability of correct detection ($P_c$). We propose asymptotic and finite
sample test statistics for detecting the number of sources with the required
$P_c$ at moderate to high signal to noise ratios. Once the number of sources
are detected, or equivalently the optimal $\hat{\tau}$ is estimated, the
corresponding estimation and grid matching of the DoAs can be performed by
solving the lasso or group-lasso problem at $\hat{\tau}$
|
[{'version': 'v1', 'created': 'Mon, 22 May 2017 05:32:39 GMT'}]
|
2017-05-23
|
[array(['Jagannath', 'Rakshith', ''], dtype=object)]
|
18,901 |
1205.5900
|
Masud Mansuripur
|
Masud Mansuripur
|
Spin and Orbital Angular Momenta of Electromagnetic Waves in Free Space
|
10 pages, 2 figures, 18 equations, 27 references
|
Physical Review A 84, 033838 (2011)
|
10.1103/PhysRevA.84.033838
| null |
physics.optics math-ph math.MP physics.class-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We derive exact expressions, in the form of Fourier integrals over the (k,w)
domain, for the energy, momentum, and angular momentum of a light pulse
propagating in free space. The angular momentum is seen to split naturally into
two parts. The spin contribution of each plane-wave constituent of the pulse,
representing the difference between its right- and left-circular polarization
content, is aligned with the corresponding k-vector. In contrast, the orbital
angular momentum associated with each plane-wave is orthogonal to its k-vector.
In general, the orbital angular momentum content of the wavepacket is the sum
of an intrinsic part, due, for example, to phase vorticity, and an extrinsic
part, r_CM x p, produced by the linear motion of the center-of-mass r_CM of the
light pulse in the direction of its linear momentum p.
|
[{'version': 'v1', 'created': 'Sat, 26 May 2012 17:38:40 GMT'}]
|
2012-05-29
|
[array(['Mansuripur', 'Masud', ''], dtype=object)]
|
18,902 |
1402.4183
|
Zizhuo Wang
|
Dongdong Ge, Zizhuo Wang, Lai Wei, Jiawei Zhang
|
An Improved Algorithm for Fixed-Hub Single Allocation Problem
| null | null | null | null |
cs.DS cs.CC math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper discusses the fixed-hub single allocation problem (FHSAP). In this
problem, a network consists of hub nodes and terminal nodes. Hubs are fixed and
fully connected; each terminal node is connected to a single hub which routes
all its traffic. The goal is to minimize the cost of routing the traffic in the
network. In this paper, we propose a linear programming (LP)-based rounding
algorithm. The algorithm is based on two ideas. First, we modify the LP
relaxation formulation introduced in Ernst and Krishnamoorthy (1996, 1999) by
incorporating a set of validity constraints. Then, after obtaining a fractional
solution to the LP relaxation, we make use of a geometric rounding algorithm to
obtain an integral solution. We show that by incorporating the validity
constraints, the strengthened LP often provides much tighter upper bounds than
the previous methods with a little more computational effort, and the solution
obtained often has a much smaller gap with the optimal solution. We also
formulate a robust version of the FHSAP and show that it can guard against data
uncertainty with little cost.
|
[{'version': 'v1', 'created': 'Mon, 17 Feb 2014 23:42:50 GMT'}]
|
2014-02-19
|
[array(['Ge', 'Dongdong', ''], dtype=object)
array(['Wang', 'Zizhuo', ''], dtype=object)
array(['Wei', 'Lai', ''], dtype=object)
array(['Zhang', 'Jiawei', ''], dtype=object)]
|
18,903 |
2104.06215
|
Robin Corbet
|
Laurence Arcadias, Robin H.D. Corbet, Declan McKenna, Isabella
Potenziani
|
Astro-animation - A Case Study of Art and Science Education
|
Accepted for publication in Animation Practice, Process & Production
| null | null | null |
physics.ed-ph astro-ph.HE physics.pop-ph
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Art and science are different ways of exploring the world, but together they
have the potential to be thought-provoking, facilitate a science-society
dialogue, raise public awareness of science, and develop an understanding of
art. For several years, we have been teaching an astro-animation class at the
Maryland Institute College of Art as a collaboration between students and NASA
scientists. Working in small groups, the students create short animations based
on the research of the scientists who are going to follow the projects as
mentors. By creating these animations, students bring the power of their
imagination to see the research of the scientists through a different lens.
Astro-animation is an undergraduate-level course jointly taught by an
astrophysicist and an animator. In this paper we present the motivation behind
the class, describe the details of how it is carried out, and discuss the
interactions between artists and scientists. We describe how such a program
offers an effective way for art students, not only to learn about science but
to have a glimpse of "science in action". The students have the opportunity to
become involved in the process of science as artists, as observers first and
potentially through their own art research. Every year, one or more internships
at NASA Goddard Space Flight Center have been available for our students in the
summer. Two students describe their experiences undertaking these internships
and how science affects their creation of animations for this program and in
general. We also explain the genesis of our astro-animation program, how it is
taught in our animation department, and we present the highlights of an
investigation of the effectiveness of this program we carried out with the
support of an NEA research grant. In conclusion we discuss how the program may
grow in new directions, such as contributing to informal STE(A)M learning.
|
[{'version': 'v1', 'created': 'Tue, 13 Apr 2021 14:09:26 GMT'}]
|
2021-04-14
|
[array(['Arcadias', 'Laurence', ''], dtype=object)
array(['Corbet', 'Robin H. D.', ''], dtype=object)
array(['McKenna', 'Declan', ''], dtype=object)
array(['Potenziani', 'Isabella', ''], dtype=object)]
|
18,904 |
1501.00585
|
Paul Klevgard
|
Paul A. Klevgard
|
The Paradigm of Projectile Motion and its Consequences for Special
Relativity. Making Sense of Physics
|
Deprecated: Duplicates ideas in new paper: "Minkowski and Special
Relativity: Does His Spacetime Geometry Explain Space Contraction?"
[arXiv:1602.02829]
| null | null | null |
physics.hist-ph
|
http://creativecommons.org/licenses/by/4.0/
|
A new explanation for space contraction and time dilation in special
relativity is offered based on kinetic energy differences between observers
rather than velocity differences.
The classical (Newtonian) concept of projectile motion underwent a series of
seemingly minor changes and adjustments between the discovery of the quantum
(Planck, 1900) and the early codification of quantum theory (Dirac, 1928). The
goal of physicists in this period was to keep change to a minimum and preserve
as much as possible of the traditional projectile paradigm (TPP). These
adjustments were successful in masking an all-out projectile paradigm crisis,
but they have left us with a conceptual muddle. This has been especially
deleterious for special relativity and our understanding of space contraction
and time dilation. A reinterpretation of projectile motion focusing on kinetic
energy permits a new understanding of relativistic space contraction and time
dilation.
|
[{'version': 'v1', 'created': 'Sat, 3 Jan 2015 17:50:50 GMT'}
{'version': 'v2', 'created': 'Wed, 23 Dec 2015 23:31:31 GMT'}
{'version': 'v3', 'created': 'Mon, 5 Dec 2016 18:22:09 GMT'}
{'version': 'v4', 'created': 'Mon, 15 Jan 2018 17:20:05 GMT'}]
|
2018-01-16
|
[array(['Klevgard', 'Paul A.', ''], dtype=object)]
|
18,905 |
2104.05830
|
Javier Alejandro Ahumada
|
J. A. Ahumada, A. Arellano Ferro, I. Bustos Fierro, C. L\'azaro, M. A.
Yepez, K. P. Schroeder, J. Calder\'on
|
A time-series VI study of the variable stars of the globular cluster NGC
6397
|
19 pages, 9 figures
| null |
10.1016/j.newast.2021.101607
| null |
astro-ph.SR astro-ph.GA
|
http://creativecommons.org/licenses/by/4.0/
|
We present a new time-series VI CCD photometry of the globular cluster NGC
6397, from which we obtained and analysed the light curves of 35 variables
carefully identified in the cluster field. We assessed the membership of the
variables with an astrometric analysis based on \emph{Gaia} DR2 data. The
cluster colour-magnitude diagram was differentially dereddened and cleaned of
non members, which allowed us to fit isochrones for [Fe/H]$ = -2.0$ dex in the
range 13.0--13.5 Gyr, for a mean reddening $E(B-V)=0.19$, and a distance of 2.5
kpc. This distance was confirmed using the period-luminosity relation for the
cluster's five SX Phoenicis variables (V10, V11, V15, V21, and V23) present
among its blue stragglers, yielding $2.24\pm0.13$ kpc. We also modelled the
light curves of four eclipsing binaries (V4, V5, V7, and V8), and gave the
parameters of the systems; the contact binaries V7 and V8 have distances
consistent with that of the cluster. NGC 6397 appears to harbour no RR Lyrae
stars, being its horizontal branch remarkably blue, much like that of its
analogous cluster, M10. To match the blue tail of the horizontal branch
population, models of 0.64--0.66 $M_\odot$ with mass loss at the RGB are
required, indicating rather thin shell masses for the HB stars.
|
[{'version': 'v1', 'created': 'Mon, 12 Apr 2021 21:32:14 GMT'}]
|
2021-06-02
|
[array(['Ahumada', 'J. A.', ''], dtype=object)
array(['Ferro', 'A. Arellano', ''], dtype=object)
array(['Fierro', 'I. Bustos', ''], dtype=object)
array(['Lázaro', 'C.', ''], dtype=object)
array(['Yepez', 'M. A.', ''], dtype=object)
array(['Schroeder', 'K. P.', ''], dtype=object)
array(['Calderón', 'J.', ''], dtype=object)]
|
18,906 |
1810.06236
|
Utkarsh Mishra
|
Utkarsh Mishra, R. Jafari, and Alireza Akbari
|
Disordered Kitaev chain with long-range pairing: Loschmidt echo revivals
and dynamical phase transitions
|
13+ pages, 8 figures, new results added
|
J. Phys. A: Math. Theor.53 (2020) 375301
|
10.1088/1751-8121/ab97de
| null |
cond-mat.stat-mech cond-mat.str-el quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We explore the dynamics of long-range Kitaev chain by varying pairing
interaction exponent, $\alpha$. It is well known that distinctive
characteristics on the nonequilibrium dynamics of a closed quantum system are
closely related to the equilibrium phase transitions. Specifically, the return
probability of the system to its initial state (Loschmidt echo), in the finite
size system, is expected to exhibit very nice periodicity after a sudden quench
to a quantum critical point. Where the periodicity of the revivals scales
inversely with the maximum of the group velocity. We show that, contrary to
expectations, the periodicity of the return probability breaks for a sudden
quench to the non-trivial quantum critical point. Further, We find that, the
periodicity of return probability scales inversely with the group velocity at
the gap closing point for a quench to the trivial critical point of truly
long-range pairing case, $\alpha < 1$. In addition, analyzing the effect of
averaging quenched disorder shows that the revivals in the short range pairing
cases are more robust against disorder than that of the long rang pairing case.
We also study the effect of disorder on the non-analyticities of rate function
of the return probability which introduced as a witness of the dynamical phase
transition. We exhibit that, the non-analyticities in the rate function of
return probability are washed out in the presence of strong disorders.
|
[{'version': 'v1', 'created': 'Mon, 15 Oct 2018 09:14:35 GMT'}
{'version': 'v2', 'created': 'Sun, 2 Jun 2019 22:51:34 GMT'}]
|
2020-08-28
|
[array(['Mishra', 'Utkarsh', ''], dtype=object)
array(['Jafari', 'R.', ''], dtype=object)
array(['Akbari', 'Alireza', ''], dtype=object)]
|
18,907 |
0908.4346
|
Kamal Saha
|
Kamal K. Saha, Wenchang Lu, J. Bernholc, and Vincent Meunier
|
Electron transport in multi-terminal molecular device
|
4 figures
| null | null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The electron transport properties of a four-terminal molecular device are
computed within the framework of density functional theory and non-equilibrium
Keldysh theory. The additional two terminals lead to new properties, including
a pronounced negative differential resistance not present in a two-terminal
setup, and a pseudo-gating effect. In general, quantum interference between the
four terminals and the central molecule leads to a complex non-linear behavior,
dependent on the alignment of individual molecular states under bias and their
coupling to the leads.
|
[{'version': 'v1', 'created': 'Sat, 29 Aug 2009 17:03:06 GMT'}]
|
2009-09-01
|
[array(['Saha', 'Kamal K.', ''], dtype=object)
array(['Lu', 'Wenchang', ''], dtype=object)
array(['Bernholc', 'J.', ''], dtype=object)
array(['Meunier', 'Vincent', ''], dtype=object)]
|
18,908 |
1609.05301
|
Mohammad Marabeh
|
A. Ayd{\i}n, E.Yu. Emelyanov, N. Erkur\c{s}un \"Ozcan, M.A.A. Marabeh
|
Unbounded $p$-convergence in Lattice-Normed Vector Lattices
| null | null | null | null |
math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A net $x_\alpha$ in a lattice-normed vector lattice $(X,p,E)$ is unbounded
$p$-convergent to $x\in X$ if $p(|x_\alpha-x|\wedge u)\xrightarrow{o} 0$ for
every $u\in X_+$. This convergence has been investigated recently for
$(X,p,E)=(X,\lvert\cdot \rvert,X)$ under the name of $uo$-convergence, for
$(X,p,E)=(X,\lVert\cdot\rVert,{\mathbb R})$ under the name of $un$-convergence,
and also for $(X,p,{\mathbb R}^{X^*})$, where $p(x)[f]:=|f|(|x|)$, under the
name $uaw$-convergence. In this paper we study general properties of the
unbounded $p$-convergence.
|
[{'version': 'v1', 'created': 'Sat, 17 Sep 2016 08:53:18 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Oct 2016 14:39:23 GMT'}
{'version': 'v3', 'created': 'Wed, 15 Nov 2017 05:19:25 GMT'}]
|
2017-11-16
|
[array(['Aydın', 'A.', ''], dtype=object)
array(['Emelyanov', 'E. Yu.', ''], dtype=object)
array(['Özcan', 'N. Erkurşun', ''], dtype=object)
array(['Marabeh', 'M. A. A.', ''], dtype=object)]
|
18,909 |
hep-ph/0111055
|
Sergei V. Semenov
|
V. V. Khruschev (1 and 3), V. I. Savrin (2) and S. V. Semenov (3) ((1)
Center for Gravitation and Fundamental Metrology, VNIIMS, Moscow, (2)
Institute of Nuclear Physics, Moscow State University, (3) Russian Research
Center "Kurchatov Institute", Moscow)
|
On the Parameters of the QCD-Motivated Potential in the Relativistic
Independent Quark Model
|
10 pages, LaTex; added references for the beginning, changed the last
paragraph at the end, made a few stylistic corrections
|
Phys.Lett. B525 (2002) 283-288
|
10.1016/S0370-2693(01)01456-3
| null |
hep-ph
| null |
In the framework of the relativistic independent quark model the parameters
of the QCD-motivated static potential and the quark masses are calculated on
the basis of the $1^{--}$ meson mass spectra. The value of the confining
potential coefficient is found to be ($0.197\pm 0.005) GeV${}^2$. for quark-
antiquark interaction independently on their flavours. The dependence of the
quasi-Coulombic potential strength on the interaction distance are consistent
with the QCD-motivated behaviour. The $q\bar q$-separations are evaluated and
the $e^+e^-$ decay widths are estimated with the help of relativistic
modification of the Van Royen-Weisskopf formula.
|
[{'version': 'v1', 'created': 'Tue, 6 Nov 2001 14:29:01 GMT'}
{'version': 'v2', 'created': 'Fri, 30 Nov 2001 16:11:54 GMT'}]
|
2009-11-07
|
[array(['Khruschev', 'V. V.', '', '1 and 3'], dtype=object)
array(['Savrin', 'V. I.', ''], dtype=object)
array(['Semenov', 'S. V.', ''], dtype=object)]
|
18,910 |
cond-mat/0310011
|
Danijel Djurek PhD
|
D. Djurek, Z. Medunic, M. Paljevic and A. Tonejc
|
Colossal Electric Conductivity in Ag-defect Ag5Pb2O6
|
13 pages, 7 figures
|
Phys.stat.sol. (a) 201, 544 (2004)
|
10.1002/pssa.200306738
| null |
cond-mat.supr-con cond-mat.mtrl-sci
| null |
Bystroem-Evers compound Ag5 Pb2O6 has been annealed at 500-540 K under flow
of electric current which results in a textured structure and anisotropic
colossal electric conductivity (> 10^9 ohm-1cm-1) between 210-525 K. The
related physical properties are primarly governed by dissociation of Ag from
c-axis channels and lattice strains which in turn depend upon electric current.
|
[{'version': 'v1', 'created': 'Wed, 1 Oct 2003 07:42:05 GMT'}
{'version': 'v2', 'created': 'Thu, 2 Oct 2003 11:20:11 GMT'}]
|
2009-11-10
|
[array(['Djurek', 'D.', ''], dtype=object)
array(['Medunic', 'Z.', ''], dtype=object)
array(['Paljevic', 'M.', ''], dtype=object)
array(['Tonejc', 'A.', ''], dtype=object)]
|
18,911 |
1307.3791
|
Sameh Sorour
|
Sameh Sorour, Ahmed Douik, Shahrokh Valaee, Tareq Y. Al-Naffouri and
Mohamed-Slim Alouini
|
Partially Blind Instantly Decodable Network Codes for Lossy Feedback
Environment
| null | null | null | null |
cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we study the multicast completion and decoding delay
minimization problems of instantly decodable network coding (IDNC) in the case
of lossy feedback. In such environments, the sender falls into uncertainties
about packet reception at the different receivers, which forces it to perform
partially blind selections of packet combinations in subsequent transmissions.
To determine efficient partially blind policies that handle the completion and
decoding delays of IDNC in such environment, we first extend the perfect
feedback formulation in [2], [3] to the lossy feedback environment, by
incorporating the uncertainties resulting from unheard feedback events in these
formulations. For the completion delay problem, we use this formulation to
identify the maximum likelihood state of the network in events of unheard
feedback, and employ it to design a partially blind graph update extension to
the multicast IDNC algorithm in [3]. For the decoding delay problem, we derive
an expression for the expected decoding delay increment for any arbitrary
transmission. This expression is then used to derive the optimal policy to
reduce the decoding delay in such lossy feedback environment. Results show that
our proposed solution both outperforms other approaches and achieves a
tolerable degradation even at relatively high feedback loss rates.
|
[{'version': 'v1', 'created': 'Sun, 14 Jul 2013 22:57:55 GMT'}]
|
2013-07-16
|
[array(['Sorour', 'Sameh', ''], dtype=object)
array(['Douik', 'Ahmed', ''], dtype=object)
array(['Valaee', 'Shahrokh', ''], dtype=object)
array(['Al-Naffouri', 'Tareq Y.', ''], dtype=object)
array(['Alouini', 'Mohamed-Slim', ''], dtype=object)]
|
18,912 |
2205.06312
|
Ramandeep Gill
|
Ramandeep Gill and Jonathan Granot
|
Gamma-Ray Bursts at TeV Energies: Theoretical Considerations
|
29 pages, 7 figures, invited review for the journal Galaxies as part
of the special issue on Extragalactic TeV Astronomy. Accepted for publication
| null | null | null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Gamma-ray bursts (GRBs) are the most luminous explosions in the Universe and
are powered by ultra-relativistic jets. Their prompt $\gamma$-ray emission
briefly outshines the rest of the $\gamma$-ray sky making them detectable from
cosmological distances. It is followed by, and sometimes partially overlaps
with, a similarly energetic but very broadband and longer-lasting afterglow
emission. While most GRBs are detected below a few MeV, over a hundred were
detected at high ($\gtrsim0.1\;$GeV) energies and several have now been
observed up to tens of GeV with the \textit{Fermi} Large Area Telescope (LAT).
A new electromagnetic window in the very high energy (VHE) domain
($\gtrsim0.1\;$TeV) was recently opened with the detection of afterglow
emission in the $(0.1$\textendash$1)\,$TeV energy band by ground-based imaging
atmospheric Cherenkov telescopes. The emission mechanism for the VHE spectral
component is not fully understood, and its detection offers important
constraints for GRB physics. This review provides a brief overview of the
different leptonic and hadronic mechanisms capable of producing VHE emission in
GRBs. The same mechanisms possibly give rise to the high-energy spectral
component seen during the prompt emission of many \textit{Fermi}-LAT GRBs.
Possible origins of its delayed onset and long duration, well into the
afterglow phase, with implications for the emission region and relativistic
collisionless shock physics are discussed. Key results for using GRBs as ideal
probes for constraining models of extra-galactic background light and
intergalactic magnetic fields, as well as for testing Lorentz invariance
violation, are presented.
|
[{'version': 'v1', 'created': 'Thu, 12 May 2022 18:51:07 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Jun 2022 15:36:22 GMT'}]
|
2022-06-07
|
[array(['Gill', 'Ramandeep', ''], dtype=object)
array(['Granot', 'Jonathan', ''], dtype=object)]
|
18,913 |
2107.13249
|
Bang Xiang Yong
|
Bang Xiang Yong, Yasmin Fathy, Alexandra Brintrup
|
Bayesian Autoencoders for Drift Detection in Industrial Environments
|
Published in 2020 IEEE International Workshop on Metrology for
Industry 4.0 & IoT
| null |
10.1109/MetroInd4.0IoT48571.2020.9138306
| null |
cs.LG
|
http://creativecommons.org/licenses/by/4.0/
|
Autoencoders are unsupervised models which have been used for detecting
anomalies in multi-sensor environments. A typical use includes training a
predictive model with data from sensors operating under normal conditions and
using the model to detect anomalies. Anomalies can come either from real
changes in the environment (real drift) or from faulty sensory devices (virtual
drift); however, the use of Autoencoders to distinguish between different
anomalies has not yet been considered. To this end, we first propose the
development of Bayesian Autoencoders to quantify epistemic and aleatoric
uncertainties. We then test the Bayesian Autoencoder using a real-world
industrial dataset for hydraulic condition monitoring. The system is injected
with noise and drifts, and we have found the epistemic uncertainty to be less
sensitive to sensor perturbations as compared to the reconstruction loss. By
observing the reconstructed signals with the uncertainties, we gain
interpretable insights, and these uncertainties offer a potential avenue for
distinguishing real and virtual drifts.
|
[{'version': 'v1', 'created': 'Wed, 28 Jul 2021 10:19:58 GMT'}]
|
2021-07-29
|
[array(['Yong', 'Bang Xiang', ''], dtype=object)
array(['Fathy', 'Yasmin', ''], dtype=object)
array(['Brintrup', 'Alexandra', ''], dtype=object)]
|
18,914 |
1212.0501
|
Luca Fabrizio Di Cerbo
|
Gabriele Di Cerbo and Luca F. Di Cerbo
|
Effective results for complex hyperbolic manifolds
|
Some changes according the comments of the referee and references
updated
| null |
10.1112/jlms/jdu065
| null |
math.DG math.AG math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The goal of this paper is to study the geometry of cusped complex hyperbolic
manifolds through their compactifications. We characterize toroidal
compactifications with non-nef canonical divisor. We derive effective very
ampleness results for toroidal compactifications of finite volume complex
hyperbolic manifolds. We estimate the number of ends of such manifolds in terms
of their volume. We give effective bounds on the number of complex hyperbolic
manifolds with given upper bounds on the volume. Moreover, we give two sided
bounds on their Picard numbers in terms of the volume and the number of cusps.
|
[{'version': 'v1', 'created': 'Mon, 3 Dec 2012 19:31:37 GMT'}
{'version': 'v2', 'created': 'Wed, 12 Jun 2013 20:05:57 GMT'}
{'version': 'v3', 'created': 'Wed, 11 Sep 2013 18:56:02 GMT'}
{'version': 'v4', 'created': 'Fri, 22 Nov 2013 20:49:45 GMT'}
{'version': 'v5', 'created': 'Tue, 4 Feb 2014 17:00:36 GMT'}]
|
2015-06-12
|
[array(['Di Cerbo', 'Gabriele', ''], dtype=object)
array(['Di Cerbo', 'Luca F.', ''], dtype=object)]
|
18,915 |
hep-ph/0301040
|
Heather E. Logan
|
Tao Han, Heather E. Logan, Bob McElrath, and Lian-Tao Wang
|
Phenomenology of the Little Higgs Model
|
43 pages, 6 figures; v2: discussion clarified, typos corrected; v3:
version to appear in PRD; v4: typos fixed in Feynman rules
|
Phys.Rev. D67 (2003) 095004
|
10.1103/PhysRevD.67.095004
|
MADPH-02-1317
|
hep-ph
| null |
We study the low energy phenomenology of the little Higgs model. We first
discuss the linearized effective theory of the "littlest Higgs model" and study
the low energy constraints on the model parameters. We identify sources of the
corrections to low energy observables, discuss model-dependent arbitrariness,
and outline some possible directions of extensions of the model in order to
evade the precision electroweak constraints. We then explore the characteristic
signatures to test the model in the current and future collider experiments. We
find that the LHC has great potential to discover the new SU(2) gauge bosons
and the possible new U(1) gauge boson to the multi-TeV mass scale. Other states
such as the colored vector-like quark T and doubly-charged Higgs boson Phi^{++}
may also provide interesting signals. At a linear collider, precision
measurements on the triple gauge boson couplings could be sensitive to the new
physics scale of a few TeV. We provide a comprehensive list of the linearized
interactions and vertices for the littlest Higgs model in the appendices.
|
[{'version': 'v1', 'created': 'Wed, 8 Jan 2003 18:18:47 GMT'}
{'version': 'v2', 'created': 'Sun, 2 Feb 2003 17:38:53 GMT'}
{'version': 'v3', 'created': 'Wed, 26 Mar 2003 17:17:05 GMT'}
{'version': 'v4', 'created': 'Fri, 2 Apr 2004 19:20:46 GMT'}]
|
2009-11-10
|
[array(['Han', 'Tao', ''], dtype=object)
array(['Logan', 'Heather E.', ''], dtype=object)
array(['McElrath', 'Bob', ''], dtype=object)
array(['Wang', 'Lian-Tao', ''], dtype=object)]
|
18,916 |
1601.06538
|
Dinh Cong Nguyen
|
N.D. Cong, T.S. Doan and H.T. Tuan
|
Asymptotic stability of linear fractional systems with constant
coefficients and small time dependent perturbations
| null |
Vietnam Journal of Mathematics 2018
|
10.1007/s10013-018-0272-4
| null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Our aim in this paper is to investigate the asymptotic behavior of solutions
of the perturbed linear fractional differential system. We show that if the
original linear autonomous system is asymptotically stable then under the
action of small (either linear or nonlinear) nonautonomous perturbations the
trivial solution of the perturbed system is also asymptotically stable.
|
[{'version': 'v1', 'created': 'Mon, 25 Jan 2016 10:03:36 GMT'}]
|
2018-08-24
|
[array(['Cong', 'N. D.', ''], dtype=object)
array(['Doan', 'T. S.', ''], dtype=object)
array(['Tuan', 'H. T.', ''], dtype=object)]
|
18,917 |
2111.03178
|
Maurice L. Wilson
|
Maurice L. Wilson (1), John C. Raymond (1), Susan T. Lepri (2),
Roberto Lionello (1 and 3), Nicholas A. Murphy (1), Katharine K. Reeves (1),
and Chengcai Shen (1) ((1) Harvard & Smithsonian Center for Astrophysics, (2)
University of Michigan, (3) Predictive Science Inc)
|
Constraining the CME Core Heating and Energy Budget with SOHO/UVCS
| null | null |
10.3847/1538-4357/ac4d35
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We describe the energy budget of a coronal mass ejection (CME) observed on
1999 May 17 with the Ultraviolet Coronagraph Spectrometer (UVCS). We constrain
the physical properties of the CME's core material as a function of height
along the corona by using the spectra taken by the single-slit coronagraph
spectrometer at heliocentric distances of 2.6 and 3.1 solar radii. We use
plasma diagnostics from intensity ratios, such as the O VI doublet lines, to
determine the velocity, density, temperature, and non-equilibrium ionization
states. We find that the CME core's velocity is approximately 250 km/s, and its
cumulative heating energy is comparable to its kinetic energy for all of the
plasma heating parameterizations that we investigated. Therefore, the CME's
unknown heating mechanisms have the energy to significantly affect the CME's
eruption and evolution. To understand which parameters might influence the
unknown heating mechanism, we constrain our model heating rates with the
observed data and compare them to the rate of heating generated within a
similar CME that was constructed by the MAS code's 3D MHD simulation. The rate
of heating from the simulated CME agrees with our observationally constrained
heating rates when we assume a quadratic power law to describe a self-similar
CME expansion. Furthermore, the heating rates agree when we apply a heating
parameterization that accounts for the CME flux rope's magnetic energy being
converted directly into thermal energy. This UVCS analysis serves as a case
study for the importance of multi-slit coronagraph spectrometers for CME
studies.
|
[{'version': 'v1', 'created': 'Thu, 4 Nov 2021 21:59:48 GMT'}
{'version': 'v2', 'created': 'Fri, 21 Jan 2022 01:31:22 GMT'}]
|
2022-03-14
|
[array(['Wilson', 'Maurice L.', '', '1 and 3'], dtype=object)
array(['Raymond', 'John C.', '', '1 and 3'], dtype=object)
array(['Lepri', 'Susan T.', '', '1 and 3'], dtype=object)
array(['Lionello', 'Roberto', '', '1 and 3'], dtype=object)
array(['Murphy', 'Nicholas A.', ''], dtype=object)
array(['Reeves', 'Katharine K.', ''], dtype=object)
array(['Shen', 'Chengcai', ''], dtype=object)]
|
18,918 |
hep-ph/9506377
| null |
Yu-Qi Chen and Robert J. Oakes
|
The Hyperfine Spin Splittings In Heavy Quarkonia
|
17 pages
|
Phys.Rev.D53:5051-5057,1996
|
10.1103/PhysRevD.53.5051
|
NUHEPTH-95-05
|
hep-ph
| null |
The hyperfine spin splittings in heavy quarkonia are studied using the
recently developed renormalization group improved spin-spin potential which is
independent of the scale parameter $\mu$. The calculated energy difference
between the $J/\psi$ and the $\eta_c$ fits the experimental data well, while
the predicted energy difference $\Delta M_p$ between the center of the gravity
of $1^3P_{0,1,2}$ states and the $1^1P_1$ state of charmonium has the correct
sign but is somewhat larger than the experimental data. This is not surprising
since there are several other contributions to $\Delta M_p$, which we discuss,
that are of comparable size ($\sim 1$ MeV) that should be included, before
precise agreement with the data can be expected. The mass differences of the
$\psi'-\eta_c'$, $\Upsilon(1S)-\eta_b$, $\Upsilon(2S)-\eta_b'$, and $B_c^*-B_c$
are also predicted.
|
[{'version': 'v1', 'created': 'Tue, 20 Jun 1995 18:27:04 GMT'}]
|
2014-11-17
|
[array(['Chen', 'Yu-Qi', ''], dtype=object)
array(['Oakes', 'Robert J.', ''], dtype=object)]
|
18,919 |
2212.09338
|
Simone Ciarella
|
Simone Ciarella, Massimiliano Chiappini, Emanuele Boattini, Marjolein
Dijkstra and Liesbeth M. C. Janssen
|
Dynamics of supercooled liquids from static averaged quantities using
machine learning
| null | null | null | null |
cond-mat.dis-nn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a machine-learning approach to predict the complex non-Markovian
dynamics of supercooled liquids from static averaged quantities. Compared to
techniques based on particle propensity, our method is built upon a theoretical
framework that uses as input and output system-averaged quantities, thus being
easier to apply in an experimental context where particle resolved information
is not available. In this work, we train a deep neural network to predict the
self intermediate scattering function of binary mixtures using their static
structure factor as input. While its performance is excellent for the
temperature range of the training data, the model also retains some
transferability in making decent predictions at temperatures lower than the
ones it was trained for, or when we use it for similar systems. We also develop
an evolutionary strategy that is able to construct a realistic memory function
underlying the observed non-Markovian dynamics. This method lets us conclude
that the memory function of supercooled liquids can be effectively
parameterized as the sum of two stretched exponentials, which physically
corresponds to two dominant relaxation modes.
|
[{'version': 'v1', 'created': 'Mon, 19 Dec 2022 10:07:44 GMT'}
{'version': 'v2', 'created': 'Thu, 16 Mar 2023 09:31:22 GMT'}]
|
2023-03-17
|
[array(['Ciarella', 'Simone', ''], dtype=object)
array(['Chiappini', 'Massimiliano', ''], dtype=object)
array(['Boattini', 'Emanuele', ''], dtype=object)
array(['Dijkstra', 'Marjolein', ''], dtype=object)
array(['Janssen', 'Liesbeth M. C.', ''], dtype=object)]
|
18,920 |
0711.0187
|
Mohamad Ali Gomshi Nobary
|
M.A. Gomshi Nobary and R. Sepahvand
|
Ground state heavy baryon production in a relativistic quark-diquark
model
|
8 pages, 4 figures. To appear in Phys. Rev. D
|
Phys.Rev.D76:114006,2007
|
10.1103/PhysRevD.76.114006
|
Razi-Hep 133
|
hep-ph
| null |
We use current-current interaction to calculate the fragmentation functions
to describe the production of spin-1/2, spin-1/2$'$ and spin-3/2 baryons with
massive constituents in a relativistic quark-diquark model. Our results are in
their analytic forms and are applicable for singly, doubly and triply heavy
baryons. We discuss the production of $\Omega_{bbc}$, $\Omega_{bcc}$ and
$\Omega_{ccc}$ baryons in some detail. The results are satisfactorily compared
with those obtained for triply heavy baryons calculated in a perturbative
regime within reasonable values of the parameters involved.
|
[{'version': 'v1', 'created': 'Thu, 1 Nov 2007 18:59:12 GMT'}]
|
2008-11-26
|
[array(['Nobary', 'M. A. Gomshi', ''], dtype=object)
array(['Sepahvand', 'R.', ''], dtype=object)]
|
18,921 |
astro-ph/0411654
|
Eduardo Rubio-Herrera E. Rubio-Herrera
|
Eduardo Rubio-Herrera & William H. Lee (Instituto de Astronomia - UNAM
Mexico)
|
Oscillations of Thick Accretion Discs Around Black Holes
|
4 pages, 4 figures, accepted for publication as a letter in the
Monthly Notices of the Royal Astronomical Society
|
Mon.Not.Roy.Astron.Soc. 357 (2005) L31-L34
|
10.1111/j.1745-3933.2005.00011.x
| null |
astro-ph
| null |
We present a numerical study of the response of a thick accretion disc to a
localized, external perturbation with the aim of exciting internal modes of
oscillation. We find that the perturbations efficiently excite global modes
recently identified as acoustic p--modes, and closely related to the epicyclic
oscillations of test particles. The two strongest modes occur at
eigenfrequencies which are in a 3:2 ratio. We have assumed a constant specific
angular momentum distribution within the disc. Our models are in principle
scale--free and can be used to simulate accretion tori around stellar or super
massive black holes.
|
[{'version': 'v1', 'created': 'Tue, 23 Nov 2004 23:14:21 GMT'}]
|
2007-05-23
|
[array(['Rubio-Herrera', 'Eduardo', '',
'Instituto de Astronomia - UNAM\n Mexico'], dtype=object)
array(['Lee', 'William H.', '',
'Instituto de Astronomia - UNAM\n Mexico'], dtype=object)]
|
18,922 |
hep-lat/0209014
|
Oliver Baer
|
O. Baer
|
On Witten's global anomaly for higher SU(2) representations
|
Lattice 2002 (chiral fermions), 3 pages, 4 figures
| null | null | null |
hep-lat
| null |
The spectral flow of the overlap operator is computed numerically along a
path connecting two gauge fields which differ by a topologically non-trivial
gauge transformation. The calculation is performed for SU(2) in the 3/2 and 5/2
representation. An even-odd pattern for the spectral flow as predicted by
Witten is verified. The results are, however, more complicated than naively
expected.
|
[{'version': 'v1', 'created': 'Mon, 2 Sep 2002 17:42:05 GMT'}]
|
2007-05-23
|
[array(['Baer', 'O.', ''], dtype=object)]
|
18,923 |
2206.00247
|
Sirui Li
|
Sirui Li, Chenchen Wang, Jie Xu
|
Uniqueness of global weak solutions to the frame hydrodynamics for
biaxial nematic phases in $\mathbb{R}^2$
|
26 pages
| null | null | null |
math.AP
|
http://creativecommons.org/licenses/by/4.0/
|
We consider the hydrodynamics for biaxial nematic phases described by a field
of orthonormal frame, which can be derived from a molecular-theory-based tensor
model. We prove the uniqueness of global weak solutions to the Cauchy problem
of the frame hydrodynamics in dimensional two. The proof is mainly based on the
suitable weaker energy estimates within the Littlewood--Paley analysis. We take
full advantage of the estimates of nonlinear terms with rotational derivatives
on $SO(3)$, together with cancellation relations and dissipative structures of
the biaxial frame system.
|
[{'version': 'v1', 'created': 'Wed, 1 Jun 2022 06:08:14 GMT'}
{'version': 'v2', 'created': 'Tue, 5 Jul 2022 05:58:16 GMT'}]
|
2022-07-06
|
[array(['Li', 'Sirui', ''], dtype=object)
array(['Wang', 'Chenchen', ''], dtype=object)
array(['Xu', 'Jie', ''], dtype=object)]
|
18,924 |
1004.2355
|
Lyonell S. Boulton
|
Lyonell Boulton, Michael Levitin, Marco Marletta
|
On a class of non-self-adjoint periodic boundary value problems with
discrete real spectrum
|
8 pages.
| null | null | null |
math.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In [arXiv:0801.0172] we examined a family of periodic Sturm-Liouville
problems with boundary and interior singularities which are highly
non-self-adjoint but have only real eigenvalues. We now establish Schatten
class properties of the associated resolvent operator.
|
[{'version': 'v1', 'created': 'Wed, 14 Apr 2010 08:57:15 GMT'}]
|
2010-04-15
|
[array(['Boulton', 'Lyonell', ''], dtype=object)
array(['Levitin', 'Michael', ''], dtype=object)
array(['Marletta', 'Marco', ''], dtype=object)]
|
18,925 |
2212.06912
|
Carlos Eduardo Munoz-Romero
|
Carlos E. Mu\~noz-Romero, Karin I. \"Oberg, Charles J. Law, Richard
Teague, Yuri Aikawa, Jennifer B. Bergner, David J. Wilner, Jane Huang,
Viviana V. Guzm\'an and L. Ilsedore Cleeves
|
Cold Deuterium Fractionation in the Nearest Planet-Forming Disk
|
Fixed author information
| null |
10.3847/1538-4357/aca765
| null |
astro-ph.EP astro-ph.SR
|
http://creativecommons.org/licenses/by/4.0/
|
Deuterium fractionation provides a window to the thermal history of volatiles
in the solar system and protoplanetary disks. While evidence of active
molecular deuteration has been observed towards a handful of disks, it remains
unclear whether this chemistry affects the composition of forming planetesimals
due to limited observational constraints on the radial and vertical
distribution of deuterated molecules. To shed light on this question, we
introduce new ALMA observations of DCO$^+$ and DCN $J=2-1$ at an angular
resolution of $0.5"$ (30 au) and combine them with archival data of higher
energy transitions towards the protoplanetary disk around TW Hya. We carry out
a radial excitation analysis assuming both LTE and non-LTE to localize the
physical conditions traced by DCO$^+$ and DCN emission in the disk, thus
assessing deuterium fractionation efficiencies and pathways at different disk
locations. We find similar disk-averaged column densities of $1.9\times10^{12}$
and $9.8\times10^{11}$ cm$^{-2}$ for DCO$^{+}$ and DCN, with typical kinetic
temperatures for both molecules of 20-30K, indicating a common origin near the
comet- and planet-forming midplane. The observed DCO$^+$/DCN abundance ratio,
combined with recent modeling results, provide tentative evidence of a gas
phase C/O enhancement within $<40$ au. Observations of DCO$^+$ and DCN in other
disks, as well as HCN and HCO$^+$, will be necessary to place the trends
exhibited by TW Hya in context, and fully constrain the main deuteration
mechanisms in disks.
|
[{'version': 'v1', 'created': 'Tue, 13 Dec 2022 21:32:04 GMT'}
{'version': 'v2', 'created': 'Thu, 5 Jan 2023 22:04:05 GMT'}]
|
2023-02-01
|
[array(['Muñoz-Romero', 'Carlos E.', ''], dtype=object)
array(['Öberg', 'Karin I.', ''], dtype=object)
array(['Law', 'Charles J.', ''], dtype=object)
array(['Teague', 'Richard', ''], dtype=object)
array(['Aikawa', 'Yuri', ''], dtype=object)
array(['Bergner', 'Jennifer B.', ''], dtype=object)
array(['Wilner', 'David J.', ''], dtype=object)
array(['Huang', 'Jane', ''], dtype=object)
array(['Guzmán', 'Viviana V.', ''], dtype=object)
array(['Cleeves', 'L. Ilsedore', ''], dtype=object)]
|
18,926 |
1611.08574
|
Abbas Bazzi
|
Ashkan Norouzi-Fard, Abbas Bazzi, Marwa El Halabi, Ilija Bogunovic,
Ya-Ping Hsieh, Volkan Cevher
|
An Efficient Streaming Algorithm for the Submodular Cover Problem
|
To appear in NIPS'16
| null | null | null |
cs.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We initiate the study of the classical Submodular Cover (SC) problem in the
data streaming model which we refer to as the Streaming Submodular Cover (SSC).
We show that any single pass streaming algorithm using sublinear memory in the
size of the stream will fail to provide any non-trivial approximation
guarantees for SSC. Hence, we consider a relaxed version of SSC, where we only
seek to find a partial cover.
We design the first Efficient bicriteria Submodular Cover Streaming
(ESC-Streaming) algorithm for this problem, and provide theoretical guarantees
for its performance supported by numerical evidence. Our algorithm finds
solutions that are competitive with the near-optimal offline greedy algorithm
despite requiring only a single pass over the data stream. In our numerical
experiments, we evaluate the performance of ESC-Streaming on active set
selection and large-scale graph cover problems.
|
[{'version': 'v1', 'created': 'Fri, 25 Nov 2016 20:12:24 GMT'}]
|
2016-11-28
|
[array(['Norouzi-Fard', 'Ashkan', ''], dtype=object)
array(['Bazzi', 'Abbas', ''], dtype=object)
array(['Halabi', 'Marwa El', ''], dtype=object)
array(['Bogunovic', 'Ilija', ''], dtype=object)
array(['Hsieh', 'Ya-Ping', ''], dtype=object)
array(['Cevher', 'Volkan', ''], dtype=object)]
|
18,927 |
1709.02870
|
Botong Wang
|
Yongqiang Liu, Laurentiu Maxim and Botong Wang
|
Mellin transformation, propagation, and abelian duality spaces
|
Last section added, major revision on the introduction. 25 pages
| null | null | null |
math.AT math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For arbitrary field coefficients $\mathbb{K}$, we show that
$\mathbb{K}$-perverse sheaves on a complex affine torus satisfy the so-called
propagation package, i.e., the generic vanishing property and the signed Euler
characteristic property hold, and the corresponding cohomology jump loci
satisfy the propagation property and codimension lower bound. The main
ingredient used in the proof is Gabber-Loeser's Mellin transformation functor
for $\mathbb{K}$-constructible complexes on a complex affine torus, and the
fact that it behaves well with respect to perverse sheaves.
As a concrete topological application of our sheaf-theoretic results, we
study homological duality properties of complex algebraic varieties, via
abelian duality spaces. We provide new obstructions on abelian duality spaces
by showing that their cohomology jump loci satisfy a propagation package. This
is then used to prove that complex abelian varieties are the only complex
projective manifolds which are abelian duality spaces. We also construct new
examples of abelian duality spaces. For example, we show that if a smooth
quasi-projective variety $X$ satisfies a certain Hodge-theoretic condition and
it admits a proper semi-small map (e.g., a closed embedding or a finite map) to
a complex affine torus, then $X$ is an abelian duality space.
|
[{'version': 'v1', 'created': 'Fri, 8 Sep 2017 22:23:49 GMT'}
{'version': 'v2', 'created': 'Wed, 25 Oct 2017 22:02:01 GMT'}]
|
2017-10-27
|
[array(['Liu', 'Yongqiang', ''], dtype=object)
array(['Maxim', 'Laurentiu', ''], dtype=object)
array(['Wang', 'Botong', ''], dtype=object)]
|
18,928 |
1806.06150
|
Ana Fernandes
|
Ana Fernandes, Nuno Cruz, Bruno Santos, Paulo F. Carvalho, Jorge
Sousa, Bruno Gon\c{c}alves, Marco Riva, Fabio Pollastrone, Cristina Centioli,
Daniele Marocco, Basilio Esposito, Carlos M.B.A. Correia and Rita C. Pereira
|
FPGA code for the data acquisition and real-time processing prototype of
the ITER Radial Neutron Camera
|
6 pages, 10 figures, 21st IEEE Real Time Conference (RT-2018),
Colonial Williamsburg, 9-15 June 2018
| null |
10.1109/TNS.2019.2903646
| null |
physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The main role of the ITER Radial Neutron Camera (RNC) diagnostic is to
measure in real-time the plasma neutron emissivity profile at high peak count
rates for a time duration up to 500 s. Due to the unprecedented high
performance conditions and after the identification of critical problems, a set
of activities have been selected, focused on the development of high priority
prototypes, capable to deliver answers to those problems before the final RNC
design. This paper presents one of the selected activities: the design,
development and testing of a dedicated FPGA code for the RNC Data Acquisition
prototype. The FPGA code aims to acquire, process and store in real-time the
neutron and gamma pulses from the detectors located in collimated lines of
sight viewing a poloidal plasma section from the ITER Equatorial Port Plug 1.
The hardware platform used was an evaluation board from Xilinx (KC705) carrying
an IPFN FPGA Mezzanine Card (FMC-AD2-1600) with 2 digitizer channels of 12-bit
resolution sampling up to 1.6 GSamples/s. The code performs the proper input
signal conditioning using a down-sampled configuration to 400 MSamples/s, apply
dedicated algorithms for pulse detection, filtering and pileup detection, and
includes two distinct data paths operating simultaneously: i) the event-based
data-path for pulse storage; and ii) the real-time processing, with dedicated
algorithms for pulse shape discrimination and pulse height spectra. For
continuous data throughput both data-paths are streamed to the host through two
distinct PCIe x8 Direct Memory Access (DMA) channels.
|
[{'version': 'v1', 'created': 'Fri, 15 Jun 2018 23:40:19 GMT'}]
|
2019-09-04
|
[array(['Fernandes', 'Ana', ''], dtype=object)
array(['Cruz', 'Nuno', ''], dtype=object)
array(['Santos', 'Bruno', ''], dtype=object)
array(['Carvalho', 'Paulo F.', ''], dtype=object)
array(['Sousa', 'Jorge', ''], dtype=object)
array(['Gonçalves', 'Bruno', ''], dtype=object)
array(['Riva', 'Marco', ''], dtype=object)
array(['Pollastrone', 'Fabio', ''], dtype=object)
array(['Centioli', 'Cristina', ''], dtype=object)
array(['Marocco', 'Daniele', ''], dtype=object)
array(['Esposito', 'Basilio', ''], dtype=object)
array(['Correia', 'Carlos M. B. A.', ''], dtype=object)
array(['Pereira', 'Rita C.', ''], dtype=object)]
|
18,929 |
1805.08487
|
Christoph S\"underhauf
|
Christoph S\"underhauf, David P\'erez-Garc\'ia, David A. Huse, Norbert
Schuch, J. Ignacio Cirac
|
Localization with random time-periodic quantum circuits
| null |
Phys. Rev. B 98, 134204 (2018)
|
10.1103/PhysRevB.98.134204
| null |
cond-mat.stat-mech cond-mat.str-el quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a random time evolution operator composed of a circuit of random
unitaries coupling even and odd neighboring spins on a chain in turn. In spirit
of Floquet evolution, the circuit is time-periodic; each timestep is repeated
with the same random instances. We obtain analytical results for arbitrary
local Hilbert space dimension d: On a single site, average time evolution acts
as a depolarising channel. In the spin 1/2 (d=2) case, this is further
quantified numerically. For that, we develop a new numerical method that
reduces complexity by an exponential factor. Haar-distributed unitaries lead to
full depolarization after many timesteps, i.e. local thermalization. A unitary
probability distribution with tunable coupling strength allows us to observe a
many-body localization transition. In addition to a spin chain under a unitary
circuit, we consider the analogous problem with Gaussian circuits. We can make
stronger statements about the entire covariance matrix instead of single sites
only, and find that the dynamics is localising. For a random time evolution
operator homogeneous in space, however, the system delocalizes.
|
[{'version': 'v1', 'created': 'Tue, 22 May 2018 10:33:41 GMT'}
{'version': 'v2', 'created': 'Tue, 30 Oct 2018 14:23:49 GMT'}]
|
2018-10-31
|
[array(['Sünderhauf', 'Christoph', ''], dtype=object)
array(['Pérez-García', 'David', ''], dtype=object)
array(['Huse', 'David A.', ''], dtype=object)
array(['Schuch', 'Norbert', ''], dtype=object)
array(['Cirac', 'J. Ignacio', ''], dtype=object)]
|
18,930 |
1908.06772
|
Genya Kobayashi Mr.
|
Genya Kobayashi, Yuta Yamauchi, Kazuhiko Kakamu, Yuki Kawakubo,
Shonosuke Sugasawa
|
Bayesian approach to Lorenz curve using time series grouped data
| null | null | null | null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This study is concerned with estimating the inequality measures associated
with the underlying hypothetical income distribution from the times series
grouped data on the Lorenz curve. We adopt the Dirichlet pseudo likelihood
approach where the parameters of the Dirichlet likelihood are set to the
differences between the Lorenz curve of the hypothetical income distribution
for the consecutive income classes and propose a state space model which
combines the transformed parameters of the Lorenz curve through a time series
structure. Furthermore, the information on the sample size in each survey is
introduced into the originally nuisance Dirichlet precision parameter to take
into account the variability from the sampling. From the simulated data and
real data on the Japanese monthly income survey, it is confirmed that the
proposed model produces more efficient estimates on the inequality measures
than the existing models without time series structures.
|
[{'version': 'v1', 'created': 'Mon, 19 Aug 2019 12:55:55 GMT'}]
|
2019-08-20
|
[array(['Kobayashi', 'Genya', ''], dtype=object)
array(['Yamauchi', 'Yuta', ''], dtype=object)
array(['Kakamu', 'Kazuhiko', ''], dtype=object)
array(['Kawakubo', 'Yuki', ''], dtype=object)
array(['Sugasawa', 'Shonosuke', ''], dtype=object)]
|
18,931 |
1202.4864
|
Giada Valle
|
M. Dell'Omodarme, G. Valle, S. Degl'Innocenti, P. G. Prada Moroni
|
The Pisa Stellar Evolution Data Base for low-mass stars
|
Accepted for publication in A&A
|
A&A, 540, A26 (2012)
|
10.1051/0004-6361/201118632
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The last decade showed an impressive observational effort from the
photometric and spectroscopic point of view for ancient stellar clusters in our
Galaxy and beyond. The theoretical interpretation of these new observational
results requires updated evolutionary models and isochrones spanning a wide
range of chemical composition. With this aim we built the new "Pisa Stellar
Evolution Database" of stellar models and isochrones by adopting a well-tested
evolutionary code (FRANEC) implemented with updated physical and chemical
inputs. In particular, our code adopts realistic atmosphere models and an
updated equation of state, nuclear reaction rates and opacities calculated with
recent solar elements mixture. A total of 32646 models have been computed in
the range of initial masses 0.30 - 1.10 Msun for a grid of 216 chemical
compositions with the fractional metal abundance in mass, Z, ranging from
0.0001 to 0.01, and the original helium content, Y, from 0.25 to 0.42. Models
were computed for both solar-scaled and alpha-enhanced abundances with
different external convection efficiencies. Correspondingly, 9720 isochrones
were computed in the age range 8 - 15 Gyr, in time steps of 0.5 Gyr. The whole
database is available to the scientific community on the web. Models and
isochrones were compared with recent calculations available in the literature
and with the color-magnitude diagram of selected Galactic globular clusters.
The dependence of relevant evolutionary quantities on the chemical composition
and convection efficiency were analyzed in a quantitative statistical way and
analytical formulations were made available for reader's convenience.
|
[{'version': 'v1', 'created': 'Wed, 22 Feb 2012 09:12:16 GMT'}]
|
2013-06-06
|
[array(["Dell'Omodarme", 'M.', ''], dtype=object)
array(['Valle', 'G.', ''], dtype=object)
array(["Degl'Innocenti", 'S.', ''], dtype=object)
array(['Moroni', 'P. G. Prada', ''], dtype=object)]
|
18,932 |
1804.11243
|
Shih-Feng Yang
|
Shih-Feng Yang and Julia Taylor Rayz
|
An Event Detection Approach Based On Twitter Hashtags
|
The 18th International Conference on Computational Linguistics and
Intelligent Text Processing, 2017
| null | null | null |
cs.SI cs.CL cs.IR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Twitter is one of the most popular microblogging services in the world. The
great amount of information within Twitter makes it an important information
channel for people to learn and share news. Twitter hashtag is an popular
feature that can be viewed as human-labeled information which people use to
identify the topic of a tweet. Many researchers have proposed event-detection
approaches that can monitor Twitter data and determine whether special events,
such as accidents, extreme weather, earthquakes, or crimes take place. Although
many approaches use hashtags as one of their features, few of them explicitly
focus on the effectiveness of using hashtags on event detection. In this study,
we proposed an event detection approach that utilizes hashtags in tweets. We
adopted the feature extraction used in STREAMCUBE and applied a clustering
K-means approach to it. The experiments demonstrated that the K-means approach
performed better than STREAMCUBE in the clustering results. A discussion on
optimal K values for the K-means approach is also provided.
|
[{'version': 'v1', 'created': 'Mon, 2 Apr 2018 19:57:29 GMT'}]
|
2018-05-01
|
[array(['Yang', 'Shih-Feng', ''], dtype=object)
array(['Rayz', 'Julia Taylor', ''], dtype=object)]
|
18,933 |
2105.06865
|
Jianhua Zhu
|
Jianhua Zhu, Wei Wu, Andrew J. Fisher
|
Multi-hole models for deterministically placed acceptor arrays in
silicon
|
18 pages, 17 figures
|
Phys. Rev. B 104, 125415 (2021)
|
10.1103/PhysRevB.104.125415
| null |
cond-mat.mes-hall
|
http://creativecommons.org/licenses/by/4.0/
|
We compute the electronic structure of acceptor clusters in silicon by using
three methods to include electron correlations: the full configuration
interaction, the Heitler-London approximation, and the unrestricted
Hartree-Fock method. We show both the HL approach and the UHF method are good
approximations to the ground state of the full CI calculation for a pair of
acceptors and for finite linear chains. The total energies for finite linear
chains show the formation of a 4-fold degenerate ground state when there is a
weak bond at the end of the chain, which is shown to be a manifold of
topological edge states. We identify a change in the angular momentum
composition of the ground state at a critical pattern of bond lengths and show
it is related to a crossing in the Fock matrix eigenvalues. We also test the
symmetry of the UHF solution and compare it to the full CI; the symmetry is
broken under almost all the arrangements by the formation of a magnetic state
in UHF, and we find further broken symmetries for some particular arrangements
related to crossings or potential crossings between the Fock-matrix
eigenvalues. We also compute the charge distributions across the acceptors
obtained from the eigenvectors of the Fock matrix: with weak bonds at the chain
ends, two holes are localized at either end of the chain while the others have
a nearly uniform distribution over the middle; this implies the existence of
the non-trivial edge states. We apply the UHF method to treat an infinite
linear chain with periodic boundary conditions. We find the band structures in
the UHF approximation and compute the Zak phases for the occupied Fock-matrix
eigenvalues; we find they do not correctly predict the topological edge states
in this interacting system. We find direct study of the quantum numbers
characterising the edge states provides a better insight into their topological
nature.
|
[{'version': 'v1', 'created': 'Fri, 14 May 2021 14:50:26 GMT'}
{'version': 'v2', 'created': 'Tue, 25 May 2021 16:57:53 GMT'}
{'version': 'v3', 'created': 'Mon, 9 Aug 2021 15:29:16 GMT'}]
|
2021-09-15
|
[array(['Zhu', 'Jianhua', ''], dtype=object)
array(['Wu', 'Wei', ''], dtype=object)
array(['Fisher', 'Andrew J.', ''], dtype=object)]
|
18,934 |
math/0702812
|
Hwai-Chung Ho
|
Hwai-Chung Ho
|
Estimation errors of the Sharpe ratio for long-memory stochastic
volatility models
|
Published at http://dx.doi.org/10.1214/074921706000001021 in the IMS
Lecture Notes Monograph Series
(http://www.imstat.org/publications/lecnotes.htm) by the Institute of
Mathematical Statistics (http://www.imstat.org)
|
IMS Lecture Notes Monograph Series 2006, Vol. 52, 165-172
|
10.1214/074921706000001021
|
IMS-LNMS52-LNMS5211
|
math.ST q-fin.ST stat.TH
| null |
The Sharpe ratio, which is defined as the ratio of the excess expected return
of an investment to its standard deviation, has been widely cited in the
financial literature by researchers and practitioners. However, very little
attention has been paid to the statistical properties of the estimation of the
ratio. Lo (2002) derived the $\sqrt{n}$-normality of the ratio's estimation
errors for returns which are iid or stationary with serial correlations, and
pointed out that to make inference on the accuracy of the estimation, the
serial correlation among the returns needs to be taken into account. In the
present paper a class of time series models for returns is introduced to
demonstrate that there exists a factor other than the serial correlation of the
returns that dominates the asymptotic behavior of the Sharpe ratio statistics.
The model under consideration is a linear process whose innovation sequence has
summable coefficients and contains a latent volatility component which is
long-memory. It is proved that the estimation errors of the ratio are
asymptotically normal with a convergence rate slower than $\sqrt{n}$ and that
the estimation deviation of the expected return makes no contribution to the
limiting distribution.
|
[{'version': 'v1', 'created': 'Tue, 27 Feb 2007 07:50:51 GMT'}]
|
2008-12-02
|
[array(['Ho', 'Hwai-Chung', ''], dtype=object)]
|
18,935 |
1511.04709
|
Lionel Darondeau
|
Damian Brotbek and Lionel Darondeau
|
Complete intersection varieties with ample cotangent bundles
|
Reader-friendly version, to appear in Inventiones Mathematicae
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Any smooth projective variety contains many complete intersection
subvarieties with ample cotangent bundles, of each dimension up to half its own
dimension.
|
[{'version': 'v1', 'created': 'Sun, 15 Nov 2015 15:10:14 GMT'}
{'version': 'v2', 'created': 'Fri, 8 Dec 2017 18:20:33 GMT'}]
|
2017-12-11
|
[array(['Brotbek', 'Damian', ''], dtype=object)
array(['Darondeau', 'Lionel', ''], dtype=object)]
|
18,936 |
quant-ph/9904010
|
Hans J. Briegel
|
H.-J. Briegel, T. Calarco, D. Jaksch, J. I. Cirac, and P. Zoller
|
Quantum computing with neutral atoms
|
21 pages, 19 figures
| null |
10.1080/09500340008244052
| null |
quant-ph
| null |
We develop a method to entangle neutral atoms using cold controlled
collisions. We analyze this method in two particular set-ups: optical lattices
and magnetic micro-traps. Both offer the possibility of performing certain
multi-particle operations in parallel. Using this fact, we show how to
implement efficient quantum error correction and schemes for fault-tolerant
computing.
|
[{'version': 'v1', 'created': 'Fri, 2 Apr 1999 13:11:49 GMT'}]
|
2015-06-26
|
[array(['Briegel', 'H. -J.', ''], dtype=object)
array(['Calarco', 'T.', ''], dtype=object)
array(['Jaksch', 'D.', ''], dtype=object)
array(['Cirac', 'J. I.', ''], dtype=object)
array(['Zoller', 'P.', ''], dtype=object)]
|
18,937 |
2011.06849
|
Georgios M. Nikolopoulos Ph. D
|
Georgios M. Nikolopoulos and Marc Fischlin
|
Information-theoretically secure data origin authentication with quantum
and classical resources
|
close to the version to be published in Cryptography
|
Cryptography 4 (4), 31 (2020)
|
10.3390/cryptography4040031
| null |
quant-ph cs.CR
|
http://creativecommons.org/licenses/by/4.0/
|
In conventional cryptography, information-theoretically secure message
authentication can be achieved by means of universal hash functions, and
requires that the two legitimate users share a random secret key, which is
twice as long as the message. We address the question as of whether quantum
resources can offer any advantage over classical unconditionally secure message
authentication codes. It is shown that passive prepare-and-measure quantum
message-authentication schemes cannot do better than their classical
counterparts. Subsequently we present an interactive entanglement-assisted
scheme, which ideally allows for the authentication of classical messages with
a classical key, which is as long as the message.
|
[{'version': 'v1', 'created': 'Fri, 13 Nov 2020 10:33:29 GMT'}]
|
2020-11-16
|
[array(['Nikolopoulos', 'Georgios M.', ''], dtype=object)
array(['Fischlin', 'Marc', ''], dtype=object)]
|
18,938 |
2302.14184
|
Dan Liyanage
|
Dananjaya Liyanage, \"Ozge S\"urer, Matthew Plumlee, Stefan M. Wild,
Ulrich Heinz
|
Bayesian calibration of viscous anisotropic hydrodynamic simulations of
heavy-ion collisions
| null | null | null | null |
nucl-th
|
http://creativecommons.org/licenses/by/4.0/
|
Due to large pressure gradients at early times, standard hydrodynamic model
simulations of relativistic heavy-ion collisions do not become reliable until
$O(1)$\,fm/$c$ after the collision. To address this one often introduces a
pre-hydrodynamic stage that models the early evolution microscopically,
typically as a conformal, weakly interacting gas. In such an approach the
transition from the pre-hydrodynamic to the hydrodynamic stage is
discontinuous, introducing considerable theoretical model ambiguity.
Alternatively, fluids with large anisotropic pressure gradients can be handled
macroscopically using the recently developed Viscous Anisotropic Hydrodynamics
(VAH). In high-energy heavy-ion collisions VAH is applicable already at very
early times, and at later times transitions smoothly into conventional
second-order viscous hydrodynamics (VH). We present a Bayesian calibration of
the VAH model with experimental data for Pb--Pb collisions at the LHC at
$\sqrt{s_\textrm{NN}}=2.76$\,TeV. We find that the VAH model has the unique
capability of constraining the specific viscosities of the QGP at higher
temperatures than other previously used models.
|
[{'version': 'v1', 'created': 'Mon, 27 Feb 2023 22:49:42 GMT'}
{'version': 'v2', 'created': 'Fri, 3 Mar 2023 18:58:05 GMT'}
{'version': 'v3', 'created': 'Thu, 9 Mar 2023 17:43:54 GMT'}]
|
2023-03-10
|
[array(['Liyanage', 'Dananjaya', ''], dtype=object)
array(['Sürer', 'Özge', ''], dtype=object)
array(['Plumlee', 'Matthew', ''], dtype=object)
array(['Wild', 'Stefan M.', ''], dtype=object)
array(['Heinz', 'Ulrich', ''], dtype=object)]
|
18,939 |
2101.04535
|
Milad Nasr
|
Milad Nasr, Shuang Song, Abhradeep Thakurta, Nicolas Papernot and
Nicholas Carlini
|
Adversary Instantiation: Lower Bounds for Differentially Private Machine
Learning
| null | null | null | null |
cs.LG cs.CR
|
http://creativecommons.org/licenses/by/4.0/
|
Differentially private (DP) machine learning allows us to train models on
private data while limiting data leakage. DP formalizes this data leakage
through a cryptographic game, where an adversary must predict if a model was
trained on a dataset D, or a dataset D' that differs in just one example.If
observing the training algorithm does not meaningfully increase the adversary's
odds of successfully guessing which dataset the model was trained on, then the
algorithm is said to be differentially private. Hence, the purpose of privacy
analysis is to upper bound the probability that any adversary could
successfully guess which dataset the model was trained on.In our paper, we
instantiate this hypothetical adversary in order to establish lower bounds on
the probability that this distinguishing game can be won. We use this adversary
to evaluate the importance of the adversary capabilities allowed in the privacy
analysis of DP training algorithms.For DP-SGD, the most common method for
training neural networks with differential privacy, our lower bounds are tight
and match the theoretical upper bound. This implies that in order to prove
better upper bounds, it will be necessary to make use of additional
assumptions. Fortunately, we find that our attacks are significantly weaker
when additional (realistic)restrictions are put in place on the adversary's
capabilities.Thus, in the practical setting common to many real-world
deployments, there is a gap between our lower bounds and the upper bounds
provided by the analysis: differential privacy is conservative and adversaries
may not be able to leak as much information as suggested by the theoretical
bound.
|
[{'version': 'v1', 'created': 'Mon, 11 Jan 2021 18:47:11 GMT'}]
|
2021-01-13
|
[array(['Nasr', 'Milad', ''], dtype=object)
array(['Song', 'Shuang', ''], dtype=object)
array(['Thakurta', 'Abhradeep', ''], dtype=object)
array(['Papernot', 'Nicolas', ''], dtype=object)
array(['Carlini', 'Nicholas', ''], dtype=object)]
|
18,940 |
1410.7204
|
George Tephnadze
|
George Tephnadze
|
On The maximal operators of Vilenkin-Fej\'er means on Hardy spaces
|
Vilenkin system, Fej\'er means, martingale Hardy space. arXiv admin
note: substantial text overlap with arXiv:1410.6416, arXiv:1410.7075
|
Mathematical Inequalities & Applications, 16 (2), (2013), 301-312
| null | null |
math.CA math.FA
|
http://creativecommons.org/licenses/publicdomain/
|
The main aim of this paper is to prove that when $0<p<1/2$ the maximal
operator $\overset{\sim }{\sigma }_{p}^{\ast }f:=\underset{n\in \mathbb{N}}{%
\sup }\frac{\left\vert \sigma_{n}f\right\vert }{\left( n+1\right) ^{1/p-2}}$ is
bounded from the martingale Hardy space $H_{p}$ to the space $L_{p},$ where
$\sigma_{n}$ is $n$-th Fej\'er mean with respect to bounded Vilenkin system.
|
[{'version': 'v1', 'created': 'Sun, 5 Oct 2014 02:34:40 GMT'}]
|
2014-10-28
|
[array(['Tephnadze', 'George', ''], dtype=object)]
|
18,941 |
math/0112085
|
Julia Gordon
|
Evgeny Abakumov, Julia Gordon
|
Common hypercyclic vectors for multiples of backward shift
|
10 pages
| null | null | null |
math.FA
| null |
We prove that the space $l^2$ contains a dense set of vectors which are
hypercyclic simultaneously for all multiples of the backward shift operator by
constants of absolute value greater than 1.
|
[{'version': 'v1', 'created': 'Sat, 8 Dec 2001 19:07:15 GMT'}]
|
2016-09-07
|
[array(['Abakumov', 'Evgeny', ''], dtype=object)
array(['Gordon', 'Julia', ''], dtype=object)]
|
18,942 |
1209.1300
|
Nisheeth Joshi
|
Nisheeth Joshi, Iti Mathur
|
Input Scheme for Hindi Using Phonetic Mapping
|
Proceedings of National Conference on ICT: Theory, Practice and
Applications. SPSU Press. Organized by Sir Padampat Singhania University,
Udaipur. Sponsored by CSIR, New Delhi. March, 2010
| null | null | null |
cs.CL
|
http://creativecommons.org/licenses/by/3.0/
|
Written Communication on Computers requires knowledge of writing text for the
desired language using Computer. Mostly people do not use any other language
besides English. This creates a barrier. To resolve this issue we have
developed a scheme to input text in Hindi using phonetic mapping scheme. Using
this scheme we generate intermediate code strings and match them with
pronunciations of input text. Our system show significant success over other
input systems available.
|
[{'version': 'v1', 'created': 'Sun, 19 Aug 2012 02:38:12 GMT'}]
|
2012-09-07
|
[array(['Joshi', 'Nisheeth', ''], dtype=object)
array(['Mathur', 'Iti', ''], dtype=object)]
|
18,943 |
cond-mat/0303254
|
Hans A. Weidenmueller
|
Hans A. Weidenmueller
|
Crossing of two Coulomb-Blockade Resonances
|
15 pages, 1 figure
|
Phys. Rev. B 68 (2003) 125326
|
10.1103/PhysRevB.68.125326
| null |
cond-mat.dis-nn
| null |
We investigate theoretically the transport of non--interacting electrons
through an Aharanov--Bohm (AB) interferometer with two quantum dots (QD)
embedded into its arms. In the Coulomb-blockade regime, transport through each
QD proceeds via a single resonance. The resonances are coupled through the arms
of the AB device but may also be coupled directly. In the framework of the
Landauer--Buttiker approach, we present expressions for the scattering matrix
which depend explicitly on the energies of the two resonances and on the AB
phase. We pay particular attention to the crossing of the two resonances.
|
[{'version': 'v1', 'created': 'Thu, 13 Mar 2003 16:06:09 GMT'}]
|
2009-11-10
|
[array(['Weidenmueller', 'Hans A.', ''], dtype=object)]
|
18,944 |
1912.11021
|
Alexandre Gavrilik
|
A. M. Gavrilik, Yu. A. Mishchenko
|
Composite Fermions as Deformed Oscillators: Wavefunctions and
Entanglement
|
9 pages,4 figures, based on the results presented at the XI
Bolyai--Gauss--Lobachevskii (BGL-2019) Conference: Non--Euclidean,
Noncommutative Geometry and Quantum Physics
|
Ukr. J. Phys. Vol. 64, No.12 (2019), pp. 1134-1142
|
10.15407/ujpe64.12.1134
| null |
quant-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Composite structure of particles somewhat modifies their statistics, compared
to the pure Bose- or Fermi-ones. The spin-statistics theorem, so, is not valid
anymore. Say, $\pi$-mesons, excitons, Cooper pairs are not ideal bosons, and,
likewise, baryons are not pure fermions. In our preceding papers, we studied
bipartite composite boson (i.e. quasiboson) systems via a realization by
deformed oscillators. Therein, the interconstituent entanglement
characteristics such as entanglement entropy and purity were found in terms of
the parameter of deformation. Herein, we perform an analogous study of
composite Fermi-type particles, and explore them in two major cases: (i) "boson
+ fermion" composite fermions (or cofermions, or CFs); (ii) "deformed boson +
fermion" CFs. As we show, cofermions in both cases admit only the realization
by ordinary fermions. Case (i) is solved explicitly, and admissible
wavefunctions are found along with entanglement measures. Case (ii) is treated
within few modes both for CFs and constituents. The entanglement entropy and
purity of CFs are obtained via the relevant parameters and illustrated
graphically.
|
[{'version': 'v1', 'created': 'Mon, 23 Dec 2019 18:37:27 GMT'}]
|
2019-12-24
|
[array(['Gavrilik', 'A. M.', ''], dtype=object)
array(['Mishchenko', 'Yu. A.', ''], dtype=object)]
|
18,945 |
hep-ph/0208277
|
Howie Baer
|
Howard Baer and Tadas Krupovnickas
|
Radiative Neutralino Decay in Supersymmetric Models
|
19 page JHEP file with 8 PS figures; previous version contained
figure misplacement
|
JHEP 0209 (2002) 038
|
10.1088/1126-6708/2002/09/038
|
FSU-HEP-020829
|
hep-ph
| null |
The radiative decay Z2-> Z1 gamma proceeds at the one-loop level in the MSSM.
It can be the dominant decay mode for the second lightest neutralino Z2 in
certain regions of parameter space of supersymmetric models, where either a
dynamical and/or kinematic enhancement of the branching fraction occurs. We
perform an updated numerical study of this decay mode in both the minimal
supergravity model (mSUGRA) and in the more general MSSM framework. In mSUGRA,
the largest rates are found in the ``focus point'' region, where the mu
parameter becomes small, and the lightest neutralinos become higgsino-like; in
this case, radiative branching fraction can reach the 1% level. Our MSSM
analysis includes a scan over independent positive and negative gaugino masses.
We show branching fractions can reach the 10-100% level even for large values
of the parameter tan(beta). These regions of parameter space are realized in
supergravity models with non-universal gaugino masses. Measurement of the
radiative neutralino branching fraction may help pin down underlying parameters
of the fundamental supersymmetric model.
|
[{'version': 'v1', 'created': 'Fri, 30 Aug 2002 17:40:56 GMT'}
{'version': 'v2', 'created': 'Tue, 17 Sep 2002 13:38:24 GMT'}
{'version': 'v3', 'created': 'Thu, 19 Sep 2002 15:45:04 GMT'}]
|
2009-11-07
|
[array(['Baer', 'Howard', ''], dtype=object)
array(['Krupovnickas', 'Tadas', ''], dtype=object)]
|
18,946 |
1910.08181
|
Yi Ouyang
|
Huidong Gao, Yi Ouyang, Masayoshi Tomizuka
|
Online Learning in Planar Pushing with Combined Prediction Model
| null | null | null | null |
cs.RO cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Pushing is a useful robotic capability for positioning and reorienting
objects. The ability to accurately predict the effect of pushes can enable
efficient trajectory planning and complicated object manipulation. Physical
prediction models for planar pushing have long been established, but their
assumptions and requirements usually don't hold in most practical settings.
Data-driven approaches can provide accurate predictions for offline data, but
they often have generalizability issues. In this paper, we propose a combined
prediction model and an online learning framework for planar push prediction.
The combined model consists of a neural network module and analytical
components with a low-dimensional parameter. We train the neural network
offline using pre-collected pushing data. In online situations, the
low-dimensional analytical parameter is learned directly from online pushes to
quickly adapt to the new environments. We test our combined model and learning
framework on real pushing experiments. Our experimental results show that our
model is able to quickly adapt to new environments while achieving similar
final prediction performance as that of pure neural network models.
|
[{'version': 'v1', 'created': 'Thu, 17 Oct 2019 21:43:56 GMT'}]
|
2019-10-21
|
[array(['Gao', 'Huidong', ''], dtype=object)
array(['Ouyang', 'Yi', ''], dtype=object)
array(['Tomizuka', 'Masayoshi', ''], dtype=object)]
|
18,947 |
hep-ph/9909450
|
A. Khodjamirian
|
A. Khodjamirian
|
Pion Form Factors from QCD Light-Cone Sum Rules
|
9 pages, 3 figures, Latex, epsfig, sprocl.sty, talk presented at the
6th INT/Jlab Workshop on Exclusive and Semiexclusive Processes at High
Momentum Transfer, Jefferson Laboratory, May 1999
| null | null |
WUE-ITP-99-021
|
hep-ph
| null |
Light-cone sum rules have proved to be very useful in calculating hadronic
matrix elements for exclusive processes. I present recent applications of this
method to the pion electromagnetic form factor and to the form factors of
$\gamma^* \rho \to \pi$ and $\gamma^*\gamma \to \pi^0$ transitions.
|
[{'version': 'v1', 'created': 'Tue, 21 Sep 1999 10:44:32 GMT'}]
|
2007-05-23
|
[array(['Khodjamirian', 'A.', ''], dtype=object)]
|
18,948 |
1412.3888
|
Jnanadeva Maharana
|
Jnanaveda Maharana
|
Scattering of Stringy States in Compactified Closed Bosonic String
|
25 pages
| null |
10.1016/j.nuclphysb.2015.05.008
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present scattering of stringy states of closed bosonic string compactified
on d-dimensional torus. We focus our attention on scattering of moduli and
gauge bosons. These states appear when massless excitations such as graviton
and antisymmetric tensor field of the uncompactified theory are dimensionally
reduced to lower dimension. The toroidally compactified theory is endowed with
the T-duality symmetry, O(d,d). Therefore, it is expected that the amplitude
for scattering of such states will be $T$-duality invariant. The formalism of
Kawai-Llewelen-Tye is adopted and appropriately tailored to construct the
vertex operators of moduli and gauge bosons. It is shown, in our approach, that
N-point amplitude is T-duality invariant. We present illustrative examples for
the four point amplitude to explicitly demonstrate the economy of our formalism
when three spatial dimensions are compactified on three dimensional torus. It
is also shown that if we construct an amplitude with a set of 'initial'
backgrounds, the T-duality operation transforms it to an amplitude associated
with another set backgrounds. We propose a modified version of KLT approach to
construct vertex operators for nonabelian massless gauge bosons which appear in
certain compactification schemes.
|
[{'version': 'v1', 'created': 'Fri, 12 Dec 2014 05:03:26 GMT'}]
|
2015-12-09
|
[array(['Maharana', 'Jnanaveda', ''], dtype=object)]
|
18,949 |
1204.1778
|
Zhang-qi Yin
|
W. L. Yang, Zhang-qi Yin, Z. X. Chen, Su-Peng Kou, M. Feng, C. H. Oh
|
Quantum simulation of artificial Abelian gauge field using
nitrogen-vacancy center ensembles coupled to superconducting resonators
|
6 papes+supplementary material
|
Phys. Rev. A 86, 012307 (2012)
|
10.1103/PhysRevA.86.012307
| null |
quant-ph cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a potentially practical scheme to simulate artificial Abelian
gauge field for polaritons using a hybrid quantum system consisting of
nitrogen-vacancy center ensembles (NVEs) and superconducting transmission line
resonators (TLR). In our case, the collective excitations of NVEs play the role
of bosonic particles, and our multiport device tends to circulate polaritons in
a behavior like a charged particle in an external magnetic field. We discuss
the possibility of identifying signatures of the Hofstadter "butterfly" in the
optical spectra of the resonators, and analyze the ground state crossover for
different gauge fields. Our work opens new perspectives in quantum simulation
of condensed matter and many-body physics using hybrid spin-ensemble circuit
quantum electrodynamics system. The experimental feasibility and challenge are
justified using currently available technology.
|
[{'version': 'v1', 'created': 'Mon, 9 Apr 2012 01:12:56 GMT'}]
|
2012-08-31
|
[array(['Yang', 'W. L.', ''], dtype=object)
array(['Yin', 'Zhang-qi', ''], dtype=object)
array(['Chen', 'Z. X.', ''], dtype=object)
array(['Kou', 'Su-Peng', ''], dtype=object)
array(['Feng', 'M.', ''], dtype=object)
array(['Oh', 'C. H.', ''], dtype=object)]
|
18,950 |
2008.06419
|
Maximilian Amsler
|
Duncan R. Sutherland, Aine Boyer Connolly, Maximilian Amsler,
Ming-Chiang Chang, Katie Rose Gann, Vidit Gupta, Sebastian Ament, Dan
Guevarra, John M. Gregoire, Carla P. Gomes, R. B. van Dover, Michael O.
Thompson
|
Optical Identification of Materials Transformations in Oxide Thin Films
| null | null | null | null |
cond-mat.mtrl-sci physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recent advances in high-throughput experimentation for combinatorial studies
have accelerated the discovery and analysis of materials across a wide range of
compositions and synthesis conditions. However, many of the more powerful
characterization methods are limited by speed, cost, availability, and/or
resolution. To make efficient use of these methods, there is value in
developing approaches for identifying critical compositions and conditions to
be used as a-priori knowledge for follow-up characterization with
high-precision techniques, such as micron-scale synchrotron based X-ray
diffraction (XRD). Here we demonstrate the use of optical microscopy and
reflectance spectroscopy to identify likely phase-change boundaries in thin
film libraries. These methods are used to delineate possible metastable phase
boundaries following lateral-gradient Laser Spike Annealing (lg-LSA) of oxide
materials. The set of boundaries are then compared with definitive
determinations of structural transformations obtained using high-resolution
XRD. We demonstrate that the optical methods detect more than 95% of the
structural transformations in a composition-gradient La-Mn-O library and a
Ga$_2$O$_3$ sample, both subject to an extensive set of lg-LSA anneals. Our
results provide quantitative support for the value of optically-detected
transformations as a priori data to guide subsequent structural
characterization, ultimately accelerating and enhancing the efficient
implementation of $\mu$m-resolution XRD experiments.
|
[{'version': 'v1', 'created': 'Fri, 14 Aug 2020 15:29:33 GMT'}]
|
2020-08-17
|
[array(['Sutherland', 'Duncan R.', ''], dtype=object)
array(['Connolly', 'Aine Boyer', ''], dtype=object)
array(['Amsler', 'Maximilian', ''], dtype=object)
array(['Chang', 'Ming-Chiang', ''], dtype=object)
array(['Gann', 'Katie Rose', ''], dtype=object)
array(['Gupta', 'Vidit', ''], dtype=object)
array(['Ament', 'Sebastian', ''], dtype=object)
array(['Guevarra', 'Dan', ''], dtype=object)
array(['Gregoire', 'John M.', ''], dtype=object)
array(['Gomes', 'Carla P.', ''], dtype=object)
array(['van Dover', 'R. B.', ''], dtype=object)
array(['Thompson', 'Michael O.', ''], dtype=object)]
|
18,951 |
1010.2093
|
Marcelino Agundez
|
Marcelino Agundez, Jose Cernicharo, and Michel Guelin
|
Photochemistry in the inner layers of clumpy circumstellar envelopes:
formation of water in C-rich objects and of C-bearing molecules in O-rich
objects
|
5 pages, 3 figures; accepted for publication in ApJ Letters
| null |
10.1088/2041-8205/724/2/L133
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A mechanism based on the penetration of interstellar ultraviolet photons into
the inner layers of clumpy circumstellar envelopes around AGB stars is proposed
to explain the non-equilibrium chemistry observed in such objects. We show
through a simple modelling approach that in circumstellar envelopes with a
certain degree of clumpiness or with moderately low mass loss rates (a few
10^(-7) solar masses per year) a photochemistry can take place in the warm and
dense inner layers inducing important changes in the chemical composition. In
carbon-rich objects water vapor and ammonia would be formed with abundances of
10^(-8) - 10(^-6) relative to H2, while in oxygen-rich envelopes ammonia and
carbon-bearing molecules such as HCN and CS would form with abundances of
10^(-9) - 10^(-7) relative to H2. The proposed mechanism would explain the
recent observation of warm water vapor in the carbon-rich envelope IRC +10216
with the Herschel Space Observatory, and predict that H2O should be detectable
in other carbon-rich objects.
|
[{'version': 'v1', 'created': 'Mon, 11 Oct 2010 13:07:46 GMT'}]
|
2015-05-20
|
[array(['Agundez', 'Marcelino', ''], dtype=object)
array(['Cernicharo', 'Jose', ''], dtype=object)
array(['Guelin', 'Michel', ''], dtype=object)]
|
18,952 |
2304.11643
|
Chengyuan Mai
|
Chuan Chen, Yuecheng Li, Zhenpeng Wu, Chengyuan Mai, Youming Liu,
Yanming Hu, Zibin Zheng, Jiawen Kang
|
Privacy Computing Meets Metaverse: Necessity, Taxonomy and Challenges
|
14 pages, 3 figures; Submitted to: IEEE INTERNET OF THINGS JOURNAL
| null | null | null |
cs.CR cs.CY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Metaverse, the core of the next-generation Internet, is a computer-generated
holographic digital environment that simultaneously combines spatio-temporal,
immersive, real-time, sustainable, interoperable, and data-sensitive
characteristics. It cleverly blends the virtual and real worlds, allowing users
to create, communicate, and transact in virtual form. With the rapid
development of emerging technologies including augmented reality, virtual
reality and blockchain, the metaverse system is becoming more and more
sophisticated and widely used in various fields such as social, tourism,
industry and economy. However, the high level of interaction with the real
world also means a huge risk of privacy leakage both for individuals and
enterprises, which has hindered the wide deployment of metaverse. Then, it is
inevitable to apply privacy computing techniques in the framework of metaverse,
which is a current research hotspot. In this paper, we conduct a comprehensive
research of the necessity, taxonomy and challenges when privacy computing meets
metaverse. Specifically, we first introduce the underlying technologies and
various applications of metaverse, on which we analyze the challenges of data
usage in metaverse, especially data privacy. Next, we review and summarize
state-of-the-art solutions based on federated learning, differential privacy,
homomorphic encryption, and zero-knowledge proofs for different privacy
problems in metaverse. Finally, we show the current security and privacy
challenges in the development of metaverse and provide open directions for
building a well-established privacy-preserving metaverse system.
|
[{'version': 'v1', 'created': 'Sun, 23 Apr 2023 13:05:58 GMT'}]
|
2023-04-25
|
[array(['Chen', 'Chuan', ''], dtype=object)
array(['Li', 'Yuecheng', ''], dtype=object)
array(['Wu', 'Zhenpeng', ''], dtype=object)
array(['Mai', 'Chengyuan', ''], dtype=object)
array(['Liu', 'Youming', ''], dtype=object)
array(['Hu', 'Yanming', ''], dtype=object)
array(['Zheng', 'Zibin', ''], dtype=object)
array(['Kang', 'Jiawen', ''], dtype=object)]
|
18,953 |
1804.00034
|
Fang Han
|
Fang Han and Tianchen Qian
|
On inference validity of weighted U-statistics under data heterogeneity
|
64 pages
| null | null | null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Motivated by challenges on studying a new correlation measurement being
popularized in evaluating online ranking algorithms' performance, this
manuscript explores the validity of uncertainty assessment for weighted
U-statistics. Without any commonly adopted assumption, we verify Efron's
bootstrap and a new resampling procedure's inference validity. Specifically, in
its full generality, our theory allows both kernels and weights asymmetric and
data points not identically distributed, which are all new issues that
historically have not been addressed. For achieving strict generalization, for
example, we have to carefully control the order of the "degenerate" term in
U-statistics which are no longer degenerate under the empirical measure for
non-i.i.d. data. Our result applies to the motivating task, giving the region
at which solid statistical inference can be made.
|
[{'version': 'v1', 'created': 'Fri, 30 Mar 2018 19:08:18 GMT'}]
|
2018-04-03
|
[array(['Han', 'Fang', ''], dtype=object)
array(['Qian', 'Tianchen', ''], dtype=object)]
|
18,954 |
1611.01837
|
Xiucai Ding
|
Xiucai Ding
|
Singular vector distribution of sample covariance matrices
| null |
Adv. Appl. Probab. 51 (2019) 236-267
|
10.1017/apr.2019.10
| null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a class of sample covariance matrices of the form $Q=TXX^{*}T^*,$
where $X=(x_{ij})$ is an $M \times N$ rectangular matrix consisting of i.i.d
entries and $T$ is a deterministic matrix satisfying $T^*T$ is diagonal.
Assuming $M$ is comparable to $N$, we prove that the distribution of the
components of the singular vectors close to the edge singular values agrees
with that of Gaussian ensembles provided the first two moments of $x_{ij}$
coincide with the Gaussian random variables. For the singular vectors
associated with the bulk singular values, the same conclusion holds if the
first four moments of $x_{ij}$ match with those of Gaussian random variables.
Similar results have been proved for Wigner matrices by Knowles and Yin.
|
[{'version': 'v1', 'created': 'Sun, 6 Nov 2016 20:21:55 GMT'}
{'version': 'v2', 'created': 'Mon, 14 Aug 2017 20:31:11 GMT'}
{'version': 'v3', 'created': 'Sat, 16 Sep 2017 15:53:24 GMT'}]
|
2019-07-24
|
[array(['Ding', 'Xiucai', ''], dtype=object)]
|
18,955 |
1502.07775
|
Samuel Walsh
|
Robin Ming Chen, Samuel Walsh
|
Reconstruction of stratified steady water waves from pressure readings
on the ocean bed
|
33 pages, 1 figure
| null | null | null |
physics.flu-dyn math-ph math.AP math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Consider a two-dimensional stratified solitary wave propagating through a
body of water that is bounded below by an impermeable ocean bed. In this work,
we study how such a wave can be reconstructed from data consisting of the wave
speed, upstream and downstream density profile, and the trace of the pressure
on the bed. First, we prove that this data uniquely determines the wave, both
in the (real) analytic and Sobolev regimes. Second, for waves that consist of
multiple layers of constant density immiscible fluids, we provide an exact
formula describing each of the interfaces in terms of the data. Finally, for
continuously stratified fluids, we detail a reconstruction scheme based on
approximation by layer-wise constant density flows.
|
[{'version': 'v1', 'created': 'Thu, 26 Feb 2015 21:54:14 GMT'}]
|
2015-03-02
|
[array(['Chen', 'Robin Ming', ''], dtype=object)
array(['Walsh', 'Samuel', ''], dtype=object)]
|
18,956 |
2108.03933
|
Wei Xie
|
Wei Xie, Yu-Hao Liu, and Hai-Hu Wen
|
A generalized phenomenological model for the magnetic field penetration
and magnetization hysteresis loops of a type-II superconductor
|
13 pages,11 figures
|
Phys. Rev. B 105, 014505 (2022)
|
10.1103/PhysRevB.105.014505
| null |
cond-mat.supr-con
|
http://creativecommons.org/licenses/by/4.0/
|
A generalized phenomenological model for the critical state of type-II
superconductors with magnetic field parallel to the superconducting plate is
proposed. This model considers the global magnetization including both the
equilibrium magnetization from surface screening current and the
non-equilibrium magnetization from bulk pinning in a self-consistent way. Our
model can be used to simulate the magnetization-hysteresis-loops (MHLs) and
flux penetrating process of different type-II superconductors, from low- to
high-kappa values. Here we take an optimally doped Ba0.6K0.4Fe2As2 single
crystal as a testing example. The model can fit the data quite well and several
important parameters can be extracted from the fitting. Thus, the model can be
extended to a general case for studying the magnetization and flux penetration
in other type-II superconductors.
|
[{'version': 'v1', 'created': 'Mon, 9 Aug 2021 10:52:57 GMT'}
{'version': 'v2', 'created': 'Tue, 18 Jan 2022 14:43:58 GMT'}]
|
2022-01-19
|
[array(['Xie', 'Wei', ''], dtype=object)
array(['Liu', 'Yu-Hao', ''], dtype=object)
array(['Wen', 'Hai-Hu', ''], dtype=object)]
|
18,957 |
2112.04455
|
Tatyana Shcherbina
|
Mariya Shcherbina, Tatyana Shcherbina
|
Finite-rank complex deformations of random band matrices: sigma-model
approximation
|
30 pp. arXiv admin note: substantial text overlap with
arXiv:1802.03813
| null | null | null |
math-ph math.MP
|
http://creativecommons.org/licenses/by/4.0/
|
We study the distribution of complex eigenvalues $z_1,\ldots, z_N$ of random
Hermitian $N\times N$ block band matrices with a complex deformation of a
finite rank. Assuming that the width of the band $W$ grows faster than
$\sqrt{N}$, we proved that the limiting density of $\Im z_1,\ldots, \Im z_N$ in
a sigma-model approximation coincides with that for the Gaussian Unitary
Ensemble. The method follows the techniques of arXiv:1802.03813
|
[{'version': 'v1', 'created': 'Wed, 8 Dec 2021 18:28:22 GMT'}]
|
2021-12-09
|
[array(['Shcherbina', 'Mariya', ''], dtype=object)
array(['Shcherbina', 'Tatyana', ''], dtype=object)]
|
18,958 |
1907.06284
|
Tatsuya Yanagisawa
|
T. Yanagisawa, H. Hidaka, H. Amitsuka, S. Zherlitsyn, J. Wosnitza, Y.
Yamane, and T. Onimaru
|
Evidence for the Single-Site Quadrupolar Kondo Effect in the Dilute
non-Kramers System Y$_{1-x}$Pr$_x$Ir$_2$Zn$_{20}$
|
5 pages, 4 figures (+ Supplemental Material: 5 pages, 4 figures)
|
Phys. Rev. Lett. 123 067201 (2019)
|
10.1103/PhysRevLett.123.067201
| null |
cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Acoustic signatures of the single-site quadrupolar Kondo effect in
Y$_{0.966}$Pr$_{0.034}$Ir$_2$Zn$_{20}$ are presented. The elastic constant
($C_{11}-C_{12}$)/2, corresponding to the $\Gamma_3$(E)-symmetry
electric-quadrupolar response, reveals a logarithmic temperature dependence of
the quadrupolar susceptibility in the low-magnetic-field region below $\sim$0.3
K. Furthermore, the Curie-type divergence of the elastic constant down to
$\sim$1 K indicates that the Pr ions in this diluted system have a non-Kramers
ground-state doublet. These observations evidence the single-site quadrupolar
Kondo effect, as previously suggested based on specific-heat and electrical
resistivity data.
|
[{'version': 'v1', 'created': 'Sun, 14 Jul 2019 21:23:16 GMT'}]
|
2019-08-08
|
[array(['Yanagisawa', 'T.', ''], dtype=object)
array(['Hidaka', 'H.', ''], dtype=object)
array(['Amitsuka', 'H.', ''], dtype=object)
array(['Zherlitsyn', 'S.', ''], dtype=object)
array(['Wosnitza', 'J.', ''], dtype=object)
array(['Yamane', 'Y.', ''], dtype=object)
array(['Onimaru', 'T.', ''], dtype=object)]
|
18,959 |
1709.03074
|
Abhiram Kaushik Badrinarayanan
|
Rohini M. Godbole, Abhiram Kaushik and Anuradha Misra
|
Transverse single-spin asymmetry in the low-virtuality leptoproduction
of open charm as a probe of the gluon Sivers function
|
24 pages, 8 figures, v4: To appear in Physical Review D. Added
results for SSA in quasi-real photoproduction obtained using the QED result
for the TMD distribution of photons in a lepton (from Phys. Rev. D 93,
013005, arXiv:1508.06964). Also added details of how the SSA in terms of
$D$-mesons is converted into SSA in open-charm decay muons, using the narrow
width approximation
|
Phys. Rev. D 97, 076001 (2018)
|
10.1103/PhysRevD.97.076001
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the low-virtuality inclusive leptoproduction of open charm,
$p^\uparrow l\rightarrow D^0+X$ as a probe of the gluon Sivers function. We
perform the analysis in a generalised parton model framework. At leading order,
this process is sensitive only to the gluon content of the proton. Hence any
detection of a transverse single-spin asymmetry in this process would be clear
indication of a non-zero gluon Sivers function (GSF). Considering COMPASS and a
future Electron-Ion Collider (EIC), we present predictions for asymmetry using
fits for the GSF available in literature. Predictions for peak asymmetry values
lie in the range of 0.8\% to 13\%. We also present estimates of the upper bound
on the asymmetry as obtained with a maximal gluon Sivers function. Further, for
the case of the Electron-Ion Collider, we evaluate the asymmetry in the muons
decaying from the $D$-meson and find that the asymmetry is well preserved in
the kinematics of the muons. Peak values of the muon asymmetry are close to
those obtained for the $D$-meson and lie in the range $0.75\%$ to 11\%.
|
[{'version': 'v1', 'created': 'Sun, 10 Sep 2017 09:16:59 GMT'}
{'version': 'v2', 'created': 'Wed, 13 Sep 2017 11:17:26 GMT'}
{'version': 'v3', 'created': 'Sun, 17 Dec 2017 08:01:27 GMT'}
{'version': 'v4', 'created': 'Fri, 30 Mar 2018 04:31:01 GMT'}]
|
2018-04-11
|
[array(['Godbole', 'Rohini M.', ''], dtype=object)
array(['Kaushik', 'Abhiram', ''], dtype=object)
array(['Misra', 'Anuradha', ''], dtype=object)]
|
18,960 |
1905.03936
|
Frithjof Karsch
|
Frithjof Karsch
|
Critical behavior and net-charge fluctuations from lattice QCD
|
10 pages, 9 figures; Based on talks given at the conference "The
Critical Point and Onset of Deconfinement" (CPOD 2018) Corfu, Greece and the
EMMI workshop "Probing the Phase Structure of Strongly Interacting Matter:
Theory and Experiment", GSI-Darmstadt, Germany
| null | null | null |
hep-lat hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present recent results on the critical and pseudo-critical temperatures in
(2+1)-flavor QCD with a physical strange quark mass and two degenerate light
quark masses extrapolated to the chiral limit and tuned to the physical value,
respectively. We furthermore discuss implication of the observed low chiral
phase transition temperature, Tc0=132_{-6}^{+3} MeV, for the structure of
cumulants of conserved charge fluctuations at vanishing baryon chemical
potential and consequences for the possible location of the QCD critical
endpoint in the QCD phase diagram at non-zero baryon chemical potential.
|
[{'version': 'v1', 'created': 'Fri, 10 May 2019 04:48:21 GMT'}]
|
2019-05-13
|
[array(['Karsch', 'Frithjof', ''], dtype=object)]
|
18,961 |
2009.09771
|
Miguel G\'omez-Garrido
|
Miguel G\'omez-Garrido, Valent\'in Bujarrabal, Javier Alcolea, Rebeca
Soria-Ruiz, Pablo de Vicente and Jean-Fran\c{c}ois Desmurs
|
Very fast variations of SiO maser emission in evolved stars
| null |
A&A 642, A213 (2020)
|
10.1051/0004-6361/202037499
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Context. Stars on the asymptotic giant branch (AGB) are long-period variables
that present strong flux variations at almost all wavelengths, including the
SiO maser lines. The periods of these variations are of 300-500 days in
Mira-type stars and somewhat shorter in semi-regular variables. The variability
of the SiO lines on short timescales has been investigated, but the data are
inconclusive. Aims. We aim to study the time evolution of the SiO maser lines
in Mira-type and semi-regular variables at short timescales. We also discuss
the origin of the observed fast variations. Methods. We observed the SiO maser
lines at 7 mm (28SiO v=1,2 J=1-0) and 3 mm (28SiO v=1 J=2-1) using the 40 m
Yebes antenna and the 30 m IRAM telescope, respectively, with a minimum spacing
of 1 day. We studied the semi-regular variables RX Boo and RT Vir and the
Mira-type variables U Her, R LMi, R Leo, and $\chi$ Cyg. We performed a
detailed statistical analysis of the variations on different timescales.
Results. RX Boo shows strong and fast variations in the intensity of the
different spectral features of the SiO lines at 7 mm and 3 mm. On a timescale
of one day, we find variations of >10% in 25% of the cases. Variations of
greater than $\sim$50% are often found when the observations are separated by 2
or 3 days. A similar variation rate of the SiO lines at 7 mm is found for RT
Vir, but the observations of this object are less complete. On the contrary,
the variations of the SiO maser line intensity in the Mira-type variables are
moderate, with typical variation rates around <10% in 7 days. This phenomenon
can be explained by the presence of particularly small maser-emitting clumps in
semi-regular variables, which would lead to a strong dependence of the
intensity on the density variations due to the passage of shocks.
|
[{'version': 'v1', 'created': 'Mon, 21 Sep 2020 11:48:17 GMT'}]
|
2020-10-28
|
[array(['Gómez-Garrido', 'Miguel', ''], dtype=object)
array(['Bujarrabal', 'Valentín', ''], dtype=object)
array(['Alcolea', 'Javier', ''], dtype=object)
array(['Soria-Ruiz', 'Rebeca', ''], dtype=object)
array(['de Vicente', 'Pablo', ''], dtype=object)
array(['Desmurs', 'Jean-François', ''], dtype=object)]
|
18,962 |
1611.01637
|
K. Drisya
|
Drisya Karinkuzhi (1), Aruna Goswami (1), Thomas Masseron (2) ((1)
Indian Institute of Astrophysics, Koramangala, Bangalore 560034, (2)
Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK)
|
Chemical analysis of a carbon-enhanced very metal-poor star: CD-27 14351
|
23 pages, 10 figures, Accepted for publication in ApJ
| null |
10.3847/1538-4357/834/1/61
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the first time abundance analysis of a very metal-poor
carbon-enhanced star CD-27 14351 based on a high resolution (R ~ 48000) FEROS
spectrum. Our abundance analysis performed using Local Thermodynamic
Equilibrium (LTE) model atmospheres shows that the object is a cool star with
stellar atmospheric parameters, effective temperature Teff = 4335 K, surface
gravity log g = 0.5, microturbulence = 2.42 km/s, and, metallicity [Fe/H] =
-2.6. The star exhibits high carbon and nitrogen abundances with [C/Fe] = 2.89
and [N/Fe] = 1.89. Overabundances of neutron-capture elements are evident in
Ba, La, Ce, and Nd with estimated [X/Fe] > 1, the largest enhancement being
seen in Ce with [Ce/Fe] = 2.63. While the first peak s-process elements Sr and
Y are found to be enhanced with respect to Fe, ([Sr/Fe] = 1.73 and [Y/Fe] =
1.91) the third peak s-process element Pb could not be detected in our spectrum
at the given resolution. Europium, primarily a r-process element also shows an
enhancement with [Eu/Fe] = 1.65. With [Ba/Eu] = 0.12 the object CD-27 14351
satisfies the classification criterion for CEMP-r/s star. The elemental
abundance distributions observed in this star is discussed in light of chemical
abundances observed in other CEMP stars from literature.
|
[{'version': 'v1', 'created': 'Sat, 5 Nov 2016 12:11:48 GMT'}]
|
2017-01-11
|
[array(['Karinkuzhi', 'Drisya', ''], dtype=object)
array(['Goswami', 'Aruna', ''], dtype=object)
array(['Masseron', 'Thomas', ''], dtype=object)]
|
18,963 |
1812.10009
|
Zhi Ren
|
Jifeng Wu, Bin Liu, Yanwei Cui, Hangdong Wang, Zhicheng Wang, Zhi Ren,
Guanghan Cao
|
Type-II superconductivity in W5Si3-type Nb5Sn2Al
|
Accepted for publication in Supercond. Sci. Technol
| null |
10.1088/1361-6668/ab0453
| null |
cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the discovery of superconductivity in the ternary aluminide
Nb$_{5}$Sn$_{2}$Al, which crystallizes in the W$_{5}$Si$_{3}$-type structure
with one-dimensional Nb chains along the $c$-axis. It is found that the
compound has a multiband nature and becomes a weakly coupled, type-II
superconductor below 2.0 K. The bulk nature of superconductivity is confirmed
by the specific heat jump, whose temperature dependence shows apparent
deviation from a single isotropic gap behavior. The lower and upper critical
fields are estimated to be 2.0 mT and 0.3 T, respectively. From these values,
we derive the penetration depth, coherence length and Ginzburg-Landau parameter
to be 516 nm, 32.8 nm and 15.6, respectively. By contrast, the isostructural
compound Ti$_{5}$Sn$_{2}$Al dose not superconduct above 0.5 K. A comparison of
these results with other W$_{5}$Si$_{3}$-type superconductors suggests that
$T_{\rm c}$ of these compounds correlates with the average number of valence
electrons per atom.
|
[{'version': 'v1', 'created': 'Tue, 25 Dec 2018 01:28:14 GMT'}
{'version': 'v2', 'created': 'Mon, 11 Feb 2019 02:28:06 GMT'}]
|
2019-02-12
|
[array(['Wu', 'Jifeng', ''], dtype=object)
array(['Liu', 'Bin', ''], dtype=object)
array(['Cui', 'Yanwei', ''], dtype=object)
array(['Wang', 'Hangdong', ''], dtype=object)
array(['Wang', 'Zhicheng', ''], dtype=object)
array(['Ren', 'Zhi', ''], dtype=object)
array(['Cao', 'Guanghan', ''], dtype=object)]
|
18,964 |
2001.00917
|
Zakaria El Mrabet
|
Zakaria El Mrabet, Hassan El Ghazi, Naima Kaabouch
|
A Performance Comparison of Data Mining Algorithms Based Intrusion
Detection System for Smart Grid
|
6 pages, 6 Figures
|
2019 IEEE International Conference on Electro Information
Technology (EIT)
|
10.1109/EIT.2019.8834255
| null |
cs.CR cs.LG eess.SP stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Smart grid is an emerging and promising technology. It uses the power of
information technologies to deliver intelligently the electrical power to
customers, and it allows the integration of the green technology to meet the
environmental requirements. Unfortunately, information technologies have its
inherent vulnerabilities and weaknesses that expose the smart grid to a wide
variety of security risks. The Intrusion detection system (IDS) plays an
important role in securing smart grid networks and detecting malicious
activity, yet it suffers from several limitations. Many research papers have
been published to address these issues using several algorithms and techniques.
Therefore, a detailed comparison between these algorithms is needed. This paper
presents an overview of four data mining algorithms used by IDS in Smart Grid.
An evaluation of performance of these algorithms is conducted based on several
metrics including the probability of detection, probability of false alarm,
probability of miss detection, efficiency, and processing time. Results show
that Random Forest outperforms the other three algorithms in detecting attacks
with higher probability of detection, lower probability of false alarm, lower
probability of miss detection, and higher accuracy.
|
[{'version': 'v1', 'created': 'Tue, 31 Dec 2019 20:48:13 GMT'}]
|
2020-01-06
|
[array(['Mrabet', 'Zakaria El', ''], dtype=object)
array(['Ghazi', 'Hassan El', ''], dtype=object)
array(['Kaabouch', 'Naima', ''], dtype=object)]
|
18,965 |
1407.8365
|
Mohammad Dehghan
|
Mohammad Dehghan Bahabadi, Alireza Hashemi Golpayegani, Leila Esmaeili
|
A Novel C2C E-Commerce Recommender System Based on Link Prediction:
Applying Social Network Analysis
|
7 pages, 5 figures
|
International Journal of Advanced Studies in Computer Science &
Engineering (ijascse), Vol 3, Issue 7, July 2014
| null | null |
cs.SI cs.IR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Social network analysis emerged as an important research topic in sociology
decades ago, and it has also attracted scientists from various fields of study
like psychology, anthropology, geography and economics. In recent years, a
significant number of researches has been conducted on using social network
analysis to design e-commerce recommender systems. Most of the current
recommender systems are designed for B2C e-commerce websites. This paper
focuses on building a recommendation algorithm for C2C e-commerce business
model by considering special features of C2C e-commerce websites. In this
paper, we consider users and their transactions as a network; by this mapping,
link prediction technique which is an important task in social network analysis
could be used to build the recommender system. The proposed tow-level
recommendation algorithm, rather than topology of the network, uses nodes
features like: category of items, ratings of users, and reputation of sellers.
The results show that the proposed model can be used to predict a portion of
future trades between users in a C2C commercial network.
|
[{'version': 'v1', 'created': 'Thu, 31 Jul 2014 11:45:05 GMT'}]
|
2014-08-01
|
[array(['Bahabadi', 'Mohammad Dehghan', ''], dtype=object)
array(['Golpayegani', 'Alireza Hashemi', ''], dtype=object)
array(['Esmaeili', 'Leila', ''], dtype=object)]
|
18,966 |
1910.05272
|
Saeid Alikhani
|
Somayeh Jahari and Saeid Alikhani
|
Counting independent dominating sets in linear polymers
|
12 pages, 6 figures
| null | null | null |
math.GM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A vertex subset $W\subseteq V$ of the graph $G = (V,E)$ is an independent
dominating set if every vertex in $V\setminus W$ is adjacent to at least one
vertex in $W$ and the vertices of $W$ are pairwise non-adjacent. We enumerate
independent dominating sets in several classes of graphs made by a linear or
cyclic concatenation of basic building blocks. Explicit recurrences are derived
for the number of independent dominating sets of these kind of graphs.
Generating functions for the number of independent dominating sets of
triangular and squares cacti chain are also computed.
|
[{'version': 'v1', 'created': 'Sun, 29 Sep 2019 05:16:49 GMT'}]
|
2019-10-14
|
[array(['Jahari', 'Somayeh', ''], dtype=object)
array(['Alikhani', 'Saeid', ''], dtype=object)]
|
18,967 |
1001.5471
|
Guillaume Theyssier
|
Marianne Delorme (LIP), Jacques Mazoyer (LIP), Nicolas Ollinger (LIF),
Guillaume Theyssier (LAMA)
|
Bulking II: Classifications of Cellular Automata
| null | null | null | null |
cs.FL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper is the second part of a series of two papers dealing with bulking:
a way to define quasi-order on cellular automata by comparing space-time
diagrams up to rescaling. In the present paper, we introduce three notions of
simulation between cellular automata and study the quasi-order structures
induced by these simulation relations on the whole set of cellular automata.
Various aspects of these quasi-orders are considered (induced equivalence
relations, maximum elements, induced orders, etc) providing several formal
tools allowing to classify cellular automata.
|
[{'version': 'v1', 'created': 'Fri, 29 Jan 2010 20:15:23 GMT'}
{'version': 'v2', 'created': 'Fri, 24 Sep 2010 14:19:04 GMT'}]
|
2010-09-27
|
[array(['Delorme', 'Marianne', '', 'LIP'], dtype=object)
array(['Mazoyer', 'Jacques', '', 'LIP'], dtype=object)
array(['Ollinger', 'Nicolas', '', 'LIF'], dtype=object)
array(['Theyssier', 'Guillaume', '', 'LAMA'], dtype=object)]
|
18,968 |
1204.2495
|
Diego Figueira
|
Diego Figueira
|
Satisfiability for two-variable logic with two successor relations on
finite linear orders
| null | null | null | null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the finitary satisfiability problem for first order logic with two
variables and two binary relations, corresponding to the induced successor
relations of two finite linear orders. We show that the problem is decidable in
NEXPTIME.
|
[{'version': 'v1', 'created': 'Wed, 11 Apr 2012 16:50:39 GMT'}
{'version': 'v2', 'created': 'Wed, 12 Sep 2012 17:45:56 GMT'}
{'version': 'v3', 'created': 'Fri, 18 Oct 2013 08:43:07 GMT'}]
|
2015-03-20
|
[array(['Figueira', 'Diego', ''], dtype=object)]
|
18,969 |
1502.06381
|
Markus Zimmermann
|
Markus Zimmermann (for the ALICE collaboration)
|
The ALICE analysis train system
|
5 pages, 3 figures, proceedings of the conference ACAT 2014 (Advanced
Computing and Analysis Techniques in physics), Prague, Czech Republic,
September 2014
| null | null | null |
hep-ex cs.DC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the ALICE experiment hundreds of users are analyzing big datasets on a
Grid system. High throughput and short turn-around times are achieved by a
centralized system called the LEGO trains. This system combines analysis from
different users in so-called analysis trains which are then executed within the
same Grid jobs thereby reducing the number of times the data needs to be read
from the storage systems. The centralized trains improve the performance, the
usability for users and the bookkeeping in comparison to single user analysis.
The train system builds upon the already existing ALICE tools, i.e. the
analysis framework as well as the Grid submission and monitoring
infrastructure. The entry point to the train system is a web interface which is
used to configure the analysis and the desired datasets as well as to test and
submit the train. Several measures have been implemented to reduce the time a
train needs to finish and to increase the CPU efficiency.
|
[{'version': 'v1', 'created': 'Mon, 23 Feb 2015 10:53:06 GMT'}]
|
2019-08-13
|
[array(['Zimmermann', 'Markus', '', 'for the ALICE collaboration'],
dtype=object) ]
|
18,970 |
1810.03022
|
The CMS Collaboration
|
CMS Collaboration
|
Measurement of B$^0_\mathrm{s}$ meson production in pp and PbPb
collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV
|
Replaced with the published version. Added the journal reference and
the DOI. All the figures and tables can be found at
http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-17-008
(CMS Public Pages)
|
Phys. Lett. B 796 (2019) 168
|
10.1016/j.physletb.2019.07.014
|
CMS-HIN-17-008, CERN-EP-2018-257
|
hep-ex nucl-ex
|
http://creativecommons.org/licenses/by/4.0/
|
The production cross sections of B$^0_\mathrm{s}$ mesons and charge
conjugates are measured in proton-proton (pp) and PbPb collisions via the
exclusive decay channel B$^0_\mathrm{s}$ $\to$ $\mu^+\mu^-$K$^+$K$^-$ at a
centre-of-mass energy of 5.02 TeV per nucleon pair and within the rapidity
range $|y|$ $\lt$ 2.4 using the CMS detector at the LHC. The pp measurement is
performed as a function of transverse momentum (p$_\mathrm{T}$) of the
B$^0_\mathrm{s}$ meson in the range of 7 to 50 GeV/$c$ and is compared to the
predictions of perturbative QCD calculations. The B$^0_\mathrm{s}$ production
yield in PbPb collisions is measured in two p$_\mathrm{T}$ intervals, 7 to 15
and 15 to 50 GeV/$c$, and compared to the yield in pp collisions in the same
kinematic region. The nuclear modification factor ($R_\mathrm{AA}$) is found to
be 1.5 $\pm$ 0.6 (stat) $\pm$ 0.5 (syst) for 7-15 GeV/$c$, and 0.87 $\pm$ 0.30
(stat) $\pm$ 0.17 (syst) for 15-50 GeV/$c$, respectively. Within current
uncertainties, the results are consistent with models of strangeness
enhancement and a suppression as observed for the B$^+$ mesons.
|
[{'version': 'v1', 'created': 'Sat, 6 Oct 2018 16:55:16 GMT'}
{'version': 'v2', 'created': 'Wed, 7 Aug 2019 14:55:35 GMT'}]
|
2019-08-08
|
[array(['CMS Collaboration', '', ''], dtype=object)]
|
18,971 |
1611.04328
|
Dirk Heinze
|
Dirk Heinze and Artur Zrenner and Stefan Schumacher
|
Polarization-entangled twin photons from two-photon quantum-dot emission
| null |
Phys. Rev. B 95, 245306 (2017)
|
10.1103/PhysRevB.95.245306
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Semiconductor quantum dots are promising sources for polarization-entangled
photons. As an alternative to the usual cascaded biexciton-exciton emission,
direct two-photon emission from the biexciton can be used. With a high-quality
optical resonator tuned to half the biexciton energy, a large proportion of the
photons can be steered into the two-photon emission channel. In this case the
degree of polarization entanglement is inherently insensitive to the exciton
fine-structure splitting. In the present work we analyze the biexciton emission
with particular emphasis on the influence of coupling of the quantum-dot cavity
system to its environment. Especially for a high-quality cavity, the coupling
to the surrounding semiconductor material can open up additional
phonon-assisted decay channels. Our analysis demonstrates that with the cavity
tuned to half the biexciton energy, the potentially detrimental influence of
the phonons on the polarization entanglement is strongly suppressed -- high
degrees of entanglement can still be achieved. We further discuss spectral
properties and statistics of the emitted twin photons.
|
[{'version': 'v1', 'created': 'Mon, 14 Nov 2016 10:42:41 GMT'}
{'version': 'v2', 'created': 'Fri, 26 May 2017 11:59:09 GMT'}]
|
2017-06-14
|
[array(['Heinze', 'Dirk', ''], dtype=object)
array(['Zrenner', 'Artur', ''], dtype=object)
array(['Schumacher', 'Stefan', ''], dtype=object)]
|
18,972 |
2003.11601
|
Nicolas Martin
|
D. A. Salamatin, N. Martin, V. A. Sidorov, N. M. Chtchelkatchev, M. V.
Magnitskaya, A. E. Petrova, I. P. Zibrov, L. N. Fomicheva, Jing Guo, Cheng
Huang, Liling Sun, A. V. Tsvyashchenko
|
Dualism of the 4f electrons and high-temperature antiferromagnetism of
the heavy-fermion compound YbCoC$_{2}$
|
25 pages, 8 figures, includes supplement
|
Physical Review B 101, 100406(R) (2020)
|
10.1103/PhysRevB.101.100406
| null |
cond-mat.str-el cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report on the first study of the noncentrosymmetric ternary carbide
YbCoC$_{2}$. Our magnetization, specific heat, resistivity and neutron
diffraction measurements consistently show that the system behaves as a
heavy-fermion compound, displaying an amplitude-modulated magnetic structure
below the N\'eel temperature reaching $T_{N}$ = 33 K under pressure. Such a
large value, being the highest among the Yb-based systems, is explained in the
light of our ab initio calculations, which show that the 4f electronic states
of Yb have a dual nature -- i.e., due to their strong hybridization with the 3d
states of Co, 4f states expose both localized and itinerant properties.
|
[{'version': 'v1', 'created': 'Wed, 25 Mar 2020 19:49:06 GMT'}]
|
2020-03-27
|
[array(['Salamatin', 'D. A.', ''], dtype=object)
array(['Martin', 'N.', ''], dtype=object)
array(['Sidorov', 'V. A.', ''], dtype=object)
array(['Chtchelkatchev', 'N. M.', ''], dtype=object)
array(['Magnitskaya', 'M. V.', ''], dtype=object)
array(['Petrova', 'A. E.', ''], dtype=object)
array(['Zibrov', 'I. P.', ''], dtype=object)
array(['Fomicheva', 'L. N.', ''], dtype=object)
array(['Guo', 'Jing', ''], dtype=object)
array(['Huang', 'Cheng', ''], dtype=object)
array(['Sun', 'Liling', ''], dtype=object)
array(['Tsvyashchenko', 'A. V.', ''], dtype=object)]
|
18,973 |
2112.09367
|
Jonghyun Kim
|
Jonghyun Kim, Gen Li, Cheolkon Jung, Joongkyu Kim
|
SuperStyleNet: Deep Image Synthesis with Superpixel Based Style Encoder
|
Accepted to BMVC 2021. Codes are available at
https://github.com/BenjaminJonghyun/SuperStyleNet
| null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Existing methods for image synthesis utilized a style encoder based on stacks
of convolutions and pooling layers to generate style codes from input images.
However, the encoded vectors do not necessarily contain local information of
the corresponding images since small-scale objects are tended to "wash away"
through such downscaling procedures. In this paper, we propose deep image
synthesis with superpixel based style encoder, named as SuperStyleNet. First,
we directly extract the style codes from the original image based on
superpixels to consider local objects. Second, we recover spatial relationships
in vectorized style codes based on graphical analysis. Thus, the proposed
network achieves high-quality image synthesis by mapping the style codes into
semantic labels. Experimental results show that the proposed method outperforms
state-of-the-art ones in terms of visual quality and quantitative measurements.
Furthermore, we achieve elaborate spatial style editing by adjusting style
codes.
|
[{'version': 'v1', 'created': 'Fri, 17 Dec 2021 07:53:01 GMT'}]
|
2021-12-20
|
[array(['Kim', 'Jonghyun', ''], dtype=object)
array(['Li', 'Gen', ''], dtype=object)
array(['Jung', 'Cheolkon', ''], dtype=object)
array(['Kim', 'Joongkyu', ''], dtype=object)]
|
18,974 |
2010.03084
|
Xiaoyu Yang
|
Xiaoyu Yang, Feng Nie, Yufei Feng, Quan Liu, Zhigang Chen, Xiaodan Zhu
|
Program Enhanced Fact Verification with Verbalization and Graph
Attention Network
|
16 pages (Accepted by EMNLP 2020 as a long paper)
| null | null | null |
cs.AI cs.CL cs.LG
|
http://creativecommons.org/licenses/by/4.0/
|
Performing fact verification based on structured data is important for many
real-life applications and is a challenging research problem, particularly when
it involves both symbolic operations and informal inference based on language
understanding. In this paper, we present a Program-enhanced Verbalization and
Graph Attention Network (ProgVGAT) to integrate programs and execution into
textual inference models. Specifically, a verbalization with program execution
model is proposed to accumulate evidences that are embedded in operations over
the tables. Built on that, we construct the graph attention verification
networks, which are designed to fuse different sources of evidences from
verbalized program execution, program structures, and the original statements
and tables, to make the final verification decision. To support the above
framework, we propose a program selection module optimized with a new training
strategy based on margin loss, to produce more accurate programs, which is
shown to be effective in enhancing the final verification results. Experimental
results show that the proposed framework achieves the new state-of-the-art
performance, a 74.4% accuracy, on the benchmark dataset TABFACT.
|
[{'version': 'v1', 'created': 'Tue, 6 Oct 2020 23:29:08 GMT'}
{'version': 'v2', 'created': 'Tue, 13 Oct 2020 16:43:38 GMT'}
{'version': 'v3', 'created': 'Wed, 14 Oct 2020 00:49:15 GMT'}
{'version': 'v4', 'created': 'Wed, 4 Nov 2020 16:35:19 GMT'}
{'version': 'v5', 'created': 'Thu, 26 Nov 2020 20:27:59 GMT'}
{'version': 'v6', 'created': 'Sun, 12 Sep 2021 02:16:57 GMT'}]
|
2021-09-14
|
[array(['Yang', 'Xiaoyu', ''], dtype=object)
array(['Nie', 'Feng', ''], dtype=object)
array(['Feng', 'Yufei', ''], dtype=object)
array(['Liu', 'Quan', ''], dtype=object)
array(['Chen', 'Zhigang', ''], dtype=object)
array(['Zhu', 'Xiaodan', ''], dtype=object)]
|
18,975 |
1805.00136
|
Nandeesh Hiremath
|
Nandeesh Hiremath, Dhwanil Shukla, Narayanan Komerath
|
Physics of Reverse Flow on Rotors at High Advance Ratios
|
This draft is a private copy
| null | null | null |
physics.flu-dyn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
When a rotor blade encounters reverse flow in edgewise flight at high advance
ratio, a strong vortical structure forms on the leeside of the sharp blade
edge. This has unexpected effects on blade aerodynamics. A differential onset
velocity gradient due to rotor rotation creates an envelope of reverse flow
extending from the hub. A Sharp Edge Vortex (SEV) is observed at the geometric
trailing edge, forming soon after the blade enters the retreating-blade side.
The SEV grows radially inwards in size and strength as the blade retreats. The
SEV convects and evolves along with the rotor blade until dissipation. In this
paper, a coherent vortex is observed at 240 degrees azimuth. Vortex size and
strength increase as the blade retreats, ceasing to grow before 270 degrees.
The reverse flow envelope increases at higher advance ratios with increased
vortical strength. The solid body rotation core of the vortex stretches at
lower advance ratios and shows the signs of a burst vortex in the dissipation
phase. The proximity of the SEV to the blade causes large excursions in surface
static pressures which in turn generates significant negative lift on the
retreating blade. The attached, coherent sharp edge vortex shows similar
morphological features as the leading edge vortex on a delta wing.
|
[{'version': 'v1', 'created': 'Mon, 30 Apr 2018 23:53:55 GMT'}
{'version': 'v2', 'created': 'Tue, 23 Apr 2019 02:55:48 GMT'}]
|
2019-04-24
|
[array(['Hiremath', 'Nandeesh', ''], dtype=object)
array(['Shukla', 'Dhwanil', ''], dtype=object)
array(['Komerath', 'Narayanan', ''], dtype=object)]
|
18,976 |
quant-ph/0510109
|
Hong Shen
|
S. Yang, Z. Song and C.P. Sun
|
Quantum state swapping via qubit network with Hubbard interaction
|
4 pages, 3 figures
|
Phys. Rev. B 73, 195122 (2006)
|
10.1103/PhysRevB.73.195122
| null |
quant-ph cond-mat.str-el
| null |
We study the quantum state transfer (QST) in a class of qubit network with
on-site interaction, which is described by the generalized Hubbard model with
engineered couplings. It is proved that the system of two electrons with
opposite spins in this quantum network of $N$ sites can be rigorously reduced
into $N$ one dimensional engineered single Bloch electron models with central
potential barrier. With this observation we find that such system can perform a
perfect QST, the quantum swapping between two distant electrons with opposite
spins. Numerical results show such QST and the resonant-tunnelling for the
optimal on-site interaction strengths.
|
[{'version': 'v1', 'created': 'Fri, 14 Oct 2005 08:13:55 GMT'}]
|
2011-11-09
|
[array(['Yang', 'S.', ''], dtype=object)
array(['Song', 'Z.', ''], dtype=object)
array(['Sun', 'C. P.', ''], dtype=object)]
|
18,977 |
2010.08208
|
George Zahariade
|
Maulik Parikh, Frank Wilczek, George Zahariade
|
Signatures of the Quantization of Gravity at Gravitational Wave
Detectors
|
34 pages, 1 figure
|
Phys. Rev. D 104, 046021 (2021)
|
10.1103/PhysRevD.104.046021
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We develop a formalism to calculate the response of a model gravitational
wave detector to a quantized gravitational field. Coupling a detector to a
quantum field induces stochastic fluctuations ("noise") in the length of the
detector arm. The statistical properties of this noise depend on the choice of
quantum state of the gravitational field. We characterize the noise for vacuum,
coherent, thermal, and squeezed states. For coherent states, corresponding to
classical gravitational configurations, we find that the effect of
gravitational field quantization is small. However, the standard deviation in
the arm length can be enhanced -- possibly significantly -- when the
gravitational field is in a non-coherent state. The detection of this
fundamental noise could provide direct evidence for the quantization of gravity
and for the existence of gravitons.
|
[{'version': 'v1', 'created': 'Fri, 16 Oct 2020 07:35:56 GMT'}]
|
2021-08-25
|
[array(['Parikh', 'Maulik', ''], dtype=object)
array(['Wilczek', 'Frank', ''], dtype=object)
array(['Zahariade', 'George', ''], dtype=object)]
|
18,978 |
2103.16453
|
Sierra Grant
|
Sierra L. Grant, Catherine C. Espaillat, John Wendeborn, John J.
Tobin, Enrique Mac\'ias, Anneliese Rilinger, \'Alvaro Ribas, S. Thomas
Megeath, William J. Fischer, Nuria Calvet, Kyoung Hee Kim
|
An ALMA Survey of Protoplanetary Disks in Lynds 1641
|
21 pages, 15 figures, 3 tables
| null |
10.3847/1538-4357/abf432
| null |
astro-ph.SR astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present ALMA observations of 101 protoplanetary disks within the
star-forming region Lynds 1641 in the Orion Molecular Cloud A. Our observations
include 1.33 mm continuum emission and spectral windows covering the J=2-1
transition of $^{12}$CO, $^{13}$CO, and C$^{18}$O. We detect 89 protoplanetary
disks in the dust continuum at the 4$\sigma$ level ($\sim$88% detection rate)
and 31 in $^{12}$CO, 13 in $^{13}$CO, and 4 in C$^{18}$O. Our sample contains
23 transitional disks, 20 of which are detected in the continuum. We target
infrared-bright Class II objects, which biases our sample towards massive
disks. We determine dust masses or upper limits for all sources in our sample
and compare our sample to protostars in this region. We find a decrease in dust
mass with evolutionary state. We also compare this sample to other regions
surveyed in the (sub-)millimeter and find that Lynds 1641 has a relatively
massive dust disk population compared to regions of similar and older ages,
with a median dust mass of 11.1$^{+32.9}_{-4.6}$ $M_\oplus$ and 27% with dust
masses equal to or greater than the minimum solar nebula dust mass value of
$\sim$30 $M_\oplus$. We analyze the disk mass-accretion rate relationship in
this sample and find that the viscous disk lifetimes are similar to the age of
the region, however with a large spread. One object, [MGM2012] 512, shows
large-scale ($>$5000 AU) structure in both the dust continuum and the three gas
lines. We discuss potential origins for this emission, including an accretion
streamer with large dust grains.
|
[{'version': 'v1', 'created': 'Tue, 30 Mar 2021 15:58:29 GMT'}]
|
2021-06-09
|
[array(['Grant', 'Sierra L.', ''], dtype=object)
array(['Espaillat', 'Catherine C.', ''], dtype=object)
array(['Wendeborn', 'John', ''], dtype=object)
array(['Tobin', 'John J.', ''], dtype=object)
array(['Macías', 'Enrique', ''], dtype=object)
array(['Rilinger', 'Anneliese', ''], dtype=object)
array(['Ribas', 'Álvaro', ''], dtype=object)
array(['Megeath', 'S. Thomas', ''], dtype=object)
array(['Fischer', 'William J.', ''], dtype=object)
array(['Calvet', 'Nuria', ''], dtype=object)
array(['Kim', 'Kyoung Hee', ''], dtype=object)]
|
18,979 |
2005.11005
|
Teruaki Hayashi
|
Teruaki Hayashi and Gensei Ishimura and Yukio Ohsawa
|
Modeling Stakeholder-centric Value Chain of Data to Understand Data
Exchange Ecosystem
| null | null | null | null |
cs.CY
|
http://creativecommons.org/licenses/by/4.0/
|
In recent years, the expectation that new businesses and economic value can
be created by combining/exchanging data from different fields has risen.
However, value creation by data exchange involves not only data, but also
technologies and a variety of stakeholders that are integrated and in
competition with one another. This makes the data exchange ecosystem a
challenging subject to study. In this paper, we propose a model describing the
stakeholder-centric value chain (SVC) of data by focusing on the relationships
among stakeholders in data businesses and discussing creative ways to use them.
The SVC model enables the analysis and understanding of the structural
characteristics of the data exchange ecosystem. We identified stakeholders who
carry potential risk, those who play central roles in the ecosystem, and the
distribution of profit among them using business models collected by the SVC.
|
[{'version': 'v1', 'created': 'Fri, 22 May 2020 05:04:08 GMT'}]
|
2020-05-25
|
[array(['Hayashi', 'Teruaki', ''], dtype=object)
array(['Ishimura', 'Gensei', ''], dtype=object)
array(['Ohsawa', 'Yukio', ''], dtype=object)]
|
18,980 |
2203.03403
|
Jiefeng Liu
|
Shilong Zhang and Jiefeng Liu
|
Rota-Baxter Lie $2$-algebras
|
19 pages. arXiv admin note: text overlap with arXiv:1403.2144 by
other authors
| null | null | null |
math.CT
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
In this paper, we introduce the notion of Rota-Baxter Lie $2$-algebras, which
is a categorification of Rota-Baxter Lie algebras. We prove that the category
of Rota-Baxter Lie $2$-algebras and the category of $2$-term Rota-Baxter
$L_\infty$-algebras are equivalent. We introduce the notion of a crossed module
of Rota-Baxter Lie algebras and show that there is a one-to-one correspondence
between strict $2$-term Rota-Baxter $L_\infty$-algebras and crossed modules of
Rota-Baxter Lie algebras. We give the construction of crossed modules of Lie
algebras from crossed modules of Rota-Baxter Lie algebras.
|
[{'version': 'v1', 'created': 'Mon, 7 Mar 2022 13:56:40 GMT'}]
|
2022-03-08
|
[array(['Zhang', 'Shilong', ''], dtype=object)
array(['Liu', 'Jiefeng', ''], dtype=object)]
|
18,981 |
2302.05178
|
Soham Gokhale
|
Soham Gokhale and Utpal Manna
|
Well-posedness and large deviations for the stochastic Landau Lifshitz
Bloch equation
|
45 pages
| null | null | null |
math.PR math.AP
|
http://creativecommons.org/licenses/by/4.0/
|
The stochastic Landau-Lifshitz-Bloch equation in dimensions 1; 2; and 3
perturbed by pure jump noise is considered in the Marcus canonical form. A
proof for existence of a martingale solution is given. The proof uses the
Faedo-Galerkin approximation; which is followed by compactness and tightness
arguments. This is followed by use of the Jakubowski's version of the Skorohod
Theorem. Pathwise uniqueness and the theory of Yamada and Watanabe give the
existence of a strong solution for dimensions 1 and 2. A weak convergence
method is later used to establish a Wentzell-Freidlin type large deviation
principle for the small noise asymptotic of solutions for dimensions 1 and 2.
|
[{'version': 'v1', 'created': 'Fri, 10 Feb 2023 11:12:51 GMT'}]
|
2023-02-13
|
[array(['Gokhale', 'Soham', ''], dtype=object)
array(['Manna', 'Utpal', ''], dtype=object)]
|
18,982 |
2004.09371
|
Aashia Rahman Dr
|
Aashia Rahman, Kalaga Madhav, and Martin M. Roth
|
Complex phase masks for fabricating OH-suppression filters for astronomy
|
4 Pages, 4 figures, to be submitted to IEEE Photonics Technology
Letters
| null | null | null |
astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The design of a complex phase mask (CPM) for inscribing aperiodic filters in
fibers is presented. The complex structure of the mask surface relief consists
of discrete aperiodic phase-steps at periodic intervals. We show that the
diffraction of the inscribing laser beam from the phase-step locations of the
CPM produces periodically located half phase-steps along the fiber. The
accumulated phase, along with controlled index modulation, generates the
desired aperiodic reflection spectrum. Compared to a complex 'running-light'
interferometry based inscription method, CPM offers the well known convenience
and reproducibility of the standard phase mask inscription technique. The
complexity of an aperiodic grating is encoded into the structure of the CPM.
Complex filters fabricated with CPM can be used for suppressing the near
infrared (NIR) OH- emission lines generated in the upper atmosphere, improving
the performance of ground based telescopes.
|
[{'version': 'v1', 'created': 'Mon, 20 Apr 2020 15:17:44 GMT'}]
|
2020-04-21
|
[array(['Rahman', 'Aashia', ''], dtype=object)
array(['Madhav', 'Kalaga', ''], dtype=object)
array(['Roth', 'Martin M.', ''], dtype=object)]
|
18,983 |
0705.0887
|
Elina Nieppola
|
E. Nieppola, M. Tornikoski, A. L\"ahteenm\"aki, E. Valtaoja, T.
Hakala, T. Hovatta, M. Kotiranta, S. Nummila, T. Ojala, M. Parviainen, M.
Ranta, P.-M. Saloranta, I. Torniainen, M. Tr\"oller
|
37 GHz observations of a large sample of BL Lacertae objects
|
12 pages, 5 figures + 5 tables. Published in Astronomical Journal
|
Astron.J.133:1947-1953,2007
|
10.1086/512609
| null |
astro-ph
| null |
We present 37 GHz data obtained at Metsahovi Radio Observatory in 2001
December - 2005 April for a large sample of BL Lacertae objects. We also report
the mean variability indices and radio spectral indices in frequency intervals
5 - 37 GHz and 37 - 90 GHz. Approximately 34 % of the sample was detected at 37
GHz, 136 BL Lacertae objects in all. A large majority of the detected sources
were low-energy BL Lacs (LBLs). The variability index values of the sample were
diverse, the mean fractional variability of the sample being \Delta S_2 = 0.31.
The spectral indices also varied widely, but the average radio spectrum of the
sample sources is flat. Our observations show that many of the high-energy BL
Lacs (HBL), which are usually considered radio-quiet, can at times be detected
at 37 GHz.
|
[{'version': 'v1', 'created': 'Mon, 7 May 2007 11:48:53 GMT'}]
|
2010-11-05
|
[array(['Nieppola', 'E.', ''], dtype=object)
array(['Tornikoski', 'M.', ''], dtype=object)
array(['Lähteenmäki', 'A.', ''], dtype=object)
array(['Valtaoja', 'E.', ''], dtype=object)
array(['Hakala', 'T.', ''], dtype=object)
array(['Hovatta', 'T.', ''], dtype=object)
array(['Kotiranta', 'M.', ''], dtype=object)
array(['Nummila', 'S.', ''], dtype=object)
array(['Ojala', 'T.', ''], dtype=object)
array(['Parviainen', 'M.', ''], dtype=object)
array(['Ranta', 'M.', ''], dtype=object)
array(['Saloranta', 'P. -M.', ''], dtype=object)
array(['Torniainen', 'I.', ''], dtype=object)
array(['Tröller', 'M.', ''], dtype=object)]
|
18,984 |
cond-mat/0206308
|
Kavoulakis Georgios
|
J. M. Kailasvuori, T. H. Hansson, and G. M. Kavoulakis
|
Bose-Einstein condensates in strong electric fields -- effective gauge
potentials and rotating states
|
5 pages, 2 ps figures, RevTex
|
Phys. Rev. A, 66 (2002) 053603
|
10.1103/PhysRevA.66.053603
| null |
cond-mat
| null |
Magnetically-trapped atoms in Bose-Einstein condensates are spin polarized.
Since the magnetic field is inhomogeneous, the atoms aquire Berry phases of the
Aharonov-Bohm type during adiabatic motion. In the presence of an eletric field
there is an additional Aharonov-Casher effect. Taking into account the
limitations on the strength of the electric fields due to the polarizability of
the atoms, we investigate the extent to which these effects can be used to
induce rotation in a Bose-Einstein condensate.
|
[{'version': 'v1', 'created': 'Mon, 17 Jun 2002 11:37:39 GMT'}]
|
2009-11-07
|
[array(['Kailasvuori', 'J. M.', ''], dtype=object)
array(['Hansson', 'T. H.', ''], dtype=object)
array(['Kavoulakis', 'G. M.', ''], dtype=object)]
|
18,985 |
cond-mat/0306096
|
Ralf Everaers
|
R. Everaers and M.R. Ejtehadi
|
Interaction potentials for soft and hard ellipsoids
|
8 pages, 4 figures
|
Phys. Rev. E 67, 041710 (2003)
|
10.1103/PhysRevE.67.041710
| null |
cond-mat.soft
| null |
Using results from colloid science we derive interaction potentials for
computer simulations of mixtures of soft or hard ellipsoids of arbitrary shape
and size. Our results are in many respects reminicent of potentials of the
Gay-Berne type but have a well-defined microscopic interpretation and no
adjustable parameters. Since our potentials require the calculation of similar
variables, the modification of existing simulation codes for Gay-Berne
potentials is straightforward. The computational performance should remain
unaffected.
|
[{'version': 'v1', 'created': 'Wed, 4 Jun 2003 15:34:30 GMT'}]
|
2009-11-10
|
[array(['Everaers', 'R.', ''], dtype=object)
array(['Ejtehadi', 'M. R.', ''], dtype=object)]
|
18,986 |
cond-mat/0408525
|
Hiroyuki Kimura
|
H. Kimura, Y. Noda, H. Goka, M. Fujita, K. Yamada, M. Mizumaki, N.
Ikeda, and H. Ohsumi
|
Relationship between charge stripe order and structural phase
transitions in La$_{1.875}$Ba$_{0.125-x}$Sr$_{x}$CuO$_{4}$
|
8 pages, 9 figures, Accepted for publication in PRB
| null |
10.1103/PhysRevB.70.134512
| null |
cond-mat.supr-con
| null |
The nature of charge stripe order and its relationship with structural phase
transitions were studied using synchrotron X-ray diffraction in
La$_{1.875}$Ba$_{0.125-x}$Sr$_{x}$CuO$_{4}$ ($0.05\leq x\leq 0.10$). For
$x=0.05$, as temperature increased, incommensurate superlattice peaks
associated with the charge order disappeared just at the structural phase
transition temperature, $T_{\rm d2}$. However, for $x=0.075$ and 0.09, the
superlattice peaks still existed as a short range correlation even above
$T_{\rm d2}$, indicating a precursor of charge ordering. Furthermore,
temperature dependences of the superlattice peak intensity, correlation length,
and incommensurability for $x=0.05$ are different from those for $x=0.075$ and
0.09. These results suggest that the transition process into the charge stripe
order strongly correlates with the order of the structural phase transitions. A
quantitative comparison of the structure factor associated with the charge
order have been also made for all the samples.
|
[{'version': 'v1', 'created': 'Wed, 25 Aug 2004 00:49:28 GMT'}]
|
2009-11-10
|
[array(['Kimura', 'H.', ''], dtype=object)
array(['Noda', 'Y.', ''], dtype=object)
array(['Goka', 'H.', ''], dtype=object)
array(['Fujita', 'M.', ''], dtype=object)
array(['Yamada', 'K.', ''], dtype=object)
array(['Mizumaki', 'M.', ''], dtype=object)
array(['Ikeda', 'N.', ''], dtype=object)
array(['Ohsumi', 'H.', ''], dtype=object)]
|
18,987 |
0807.2640
|
Gabriele Ghisellini
|
G. Ghisellini (Oss. Astron. di Brera)
|
Extragalactic jets: a new perspective
|
6 pages, 6 figures. Invited talk at the 52 SAIt Congress, Teramo,
Italy, May 2008
| null | null | null |
astro-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The power carried by the jet of blazars is large, compared to the luminosity
produced by their accretion disk, and is probably in the form of kinetic energy
of a normal electron-proton plasma. The Poynting flux is modest, as suggested
by the inconspicuous synchrotron luminosity when compared to the high energy
(hard X-rays and gamma-ray) one, assumed to be produced by the inverse Compton
process. It is suggested that the jet power and the SED (Spectral Energy
Distribution) of its emission are linked to the mass of the black hole M and
the accretion rate dot M. This corresponds to a new "blazar sequence" based on
M and dot M instead of only the observed blazar luminosity. These ideas can be
tested quite easily once the AGILE and especially the GLAST satellite
observations, coupled with information in the optical/X-ray band from Swift,
will allow the knowledge of the entire SED of hundreds blazars.
|
[{'version': 'v1', 'created': 'Wed, 16 Jul 2008 20:00:17 GMT'}]
|
2008-07-18
|
[array(['Ghisellini', 'G.', '', 'Oss. Astron. di Brera'], dtype=object)]
|
18,988 |
1608.01986
|
Alberto Barchielli
|
Alberto Barchielli, Matteo Gregoratti, Alessandro Toigo
|
Measurement uncertainty relations for discrete observables: Relative
entropy formulation
|
45 pages, 3 figures. A couple of formulae have been corrected
|
Commun. Math. Phys. 357 (2018) 1253-1304
|
10.1007/s00220-017-3075-7
| null |
math-ph math.MP quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a new information-theoretic formulation of quantum measurement
uncertainty relations, based on the notion of relative entropy between
measurement probabilities. In the case of a finite-dimensional system and for
any approximate joint measurement of two target discrete observables, we define
the entropic divergence as the maximal total loss of information occurring in
the approximation at hand. For fixed target observables, we study the joint
measurements minimizing the entropic divergence, and we prove the general
properties of its minimum value. Such a minimum is our uncertainty lower bound:
the total information lost by replacing the target observables with their
optimal approximations, evaluated at the worst possible state. The bound turns
out to be also an entropic incompatibility degree, that is, a good
information-theoretic measure of incompatibility: indeed, it vanishes if and
only if the target observables are compatible, it is state-independent, and it
enjoys all the invariance properties which are desirable for such a measure. In
this context, we point out the difference between general approximate joint
measurements and sequential approximate joint measurements; to do this, we
introduce a separate index for the tradeoff between the error of the first
measurement and the disturbance of the second one. By exploiting the symmetry
properties of the target observables, exact values, lower bounds and optimal
approximations are evaluated in two different concrete examples: (1) a couple
of spin-1/2 components (not necessarily orthogonal); (2) two Fourier conjugate
mutually unbiased bases in prime power dimension. Finally, the entropic
incompatibility degree straightforwardly generalizes to the case of many
observables, still maintaining all its relevant properties; we explicitly
compute it for three orthogonal spin-1/2 components.
|
[{'version': 'v1', 'created': 'Fri, 5 Aug 2016 19:52:17 GMT'}
{'version': 'v2', 'created': 'Thu, 16 Nov 2017 13:12:46 GMT'}
{'version': 'v3', 'created': 'Tue, 9 Jan 2018 11:57:10 GMT'}]
|
2018-03-02
|
[array(['Barchielli', 'Alberto', ''], dtype=object)
array(['Gregoratti', 'Matteo', ''], dtype=object)
array(['Toigo', 'Alessandro', ''], dtype=object)]
|
18,989 |
1201.2975
|
Vera Montalbano
|
Vera Montalbano
|
The problem of positivity in 1+1 dimensions and Krein spaces
|
8 pages, presented to Accadem. dei Fisioc. Siena
|
ATTI DELL'ACCADEMIA DEI FISIOCRITICI IN SIENA, vol. XVIII, p.
129-134, (1999) ISSN: 0390-7783
| null | null |
math-ph hep-th math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The possibility of introducing a positive metric on the states of the
massless scalar field in 1+1 dimensions by mean of Krein spaces is examined.
Two different realisations in Krein spaces for the massless scalar field are
compared. It is proved that one is a particular case of the other. The
peculiarities and advantages of both realisations are discussed.
|
[{'version': 'v1', 'created': 'Sat, 14 Jan 2012 01:03:58 GMT'}]
|
2013-10-11
|
[array(['Montalbano', 'Vera', ''], dtype=object)]
|
18,990 |
2006.00586
|
Akond Rahman
|
Akond Rahman and Effat Farhana
|
An Exploratory Characterization of Bugs in COVID-19 Software Projects
|
Full paper on COVID-19 software bugs submitted at the Empirical
Software Engineering Journal. The paper is under review
| null | null | null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Context: The dire consequences of the COVID-19 pandemic has influenced
development of COVID-19 software i.e., software used for analysis and
mitigation of COVID-19. Bugs in COVID-19 software can be consequential, as
COVID-19 software projects can impact public health policy and user data
privacy. Objective: The goal of this paper is to help practitioners and
researchers improve the quality of COVID-19 software through an empirical study
of open source software projects related to COVID-19. Methodology: We use 129
open source COVID-19 software projects hosted on GitHub to conduct our
empirical study. Next, we apply qualitative analysis on 550 bug reports from
the collected projects to identify bug categories. Findings: We identify 8 bug
categories, which include data bugs i.e., bugs that occur during mining and
storage of COVID-19 data. The identified bug categories appear for 7 categories
of software projects including (i) projects that use statistical modeling to
perform predictions related to COVID-19, and (ii) medical equipment software
that are used to design and implement medical equipment, such as ventilators.
Conclusion: Based on our findings, we advocate for robust statistical model
construction through better synergies between data science practitioners and
public health experts. Existence of security bugs in user tracking software
necessitates development of tools that will detect data privacy violations and
security weaknesses.
|
[{'version': 'v1', 'created': 'Sun, 31 May 2020 19:11:25 GMT'}]
|
2020-06-02
|
[array(['Rahman', 'Akond', ''], dtype=object)
array(['Farhana', 'Effat', ''], dtype=object)]
|
18,991 |
0912.2297
|
Rafal Walczak
|
Boguslaw Hajduk, Rafal Walczak
|
Presymplectic manifolds
|
some changes and improvements
| null | null | null |
math.SG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A presymplectic structure on odd dimensional manifold is given by a closed
2-form which is nondegenerate, i.e., of maximal rank. We investigate geometry
of presymplectic manifolds. Some basic theorems analogous to those in
symplectic and contact topology are given and applied to study constructions of
presymplectic manifolds. In particular, we describe how to glue presymplectic
manifolds along a presymplectic submanifold, including surgery along a
presymplectic circles.
|
[{'version': 'v1', 'created': 'Fri, 11 Dec 2009 18:06:43 GMT'}
{'version': 'v2', 'created': 'Sat, 20 Feb 2010 19:53:52 GMT'}]
|
2010-02-20
|
[array(['Hajduk', 'Boguslaw', ''], dtype=object)
array(['Walczak', 'Rafal', ''], dtype=object)]
|
18,992 |
2204.14090
|
Ekaterina Ilin
|
Ekaterina Ilin and Katja Poppenh\"ager
|
Searching for flaring star-planet interactions in AU Mic TESS
observations
|
9 pages, 4 figures. Accepted to MNRAS
| null |
10.1093/mnras/stac1232
| null |
astro-ph.SR astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Planets that closely orbit magnetically active stars are thought to be able
to interact with their magnetic fields in a way that modulates stellar
activity. This modulation in phase with the planetary orbit, such as enhanced
X-ray activity, chromospheric spots, radio emission, or flares, is considered
the clearest sign of magnetic star-planet interaction (SPI). However, the
magnitude of this interaction is poorly constrained, and the intermittent
nature of the interaction is a challenge for observers. AU Mic is an early M
dwarf, and the most actively flaring planet host detected to date. Its
innermost companion, AU Mic b, is a promising target for magnetic SPI
observations. We used optical light curves of AU Mic obtained by the Transiting
Exoplanet Survey Satellite to search for signs of flaring SPI with AU Mic b
using a customized Anderson-Darling test. In the about $50$ days of
observations, the flare distributions with orbital, rotational, and synodic
periods were generally consistent with intrinsic stellar flaring. We found the
strongest deviation ($p=0.07,\;n=71$) from intrinsic flaring with the orbital
period of AU Mic b, in the high energy half of our sample ($ED>1$ s). If it
reflects the true SPI signal from AU Mic b, extending the observing time by a
factor of $2-3$ will yield a $>3\sigma$ detection. Continued monitoring of AU
Mic may therefore reveal flaring SPI with orbital phase, while rotational
modulation will smear out due to the star's strong differential rotation.
|
[{'version': 'v1', 'created': 'Fri, 29 Apr 2022 13:35:58 GMT'}]
|
2022-05-25
|
[array(['Ilin', 'Ekaterina', ''], dtype=object)
array(['Poppenhäger', 'Katja', ''], dtype=object)]
|
18,993 |
2211.08931
|
Peter Massopust
|
D. Kumar, A. K. B. Chand, P. R. Massopust
|
Multivariate Zipper Fractal Functions
| null | null | null | null |
math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A novel approach to zipper fractal interpolation theory for functions of
several variables is proposed. We develop multivariate zipper fractal functions
in a constructive manner. We then perturb a multivariate function to construct
its zipper $\alpha$-fractal varieties through free choices of base functions,
scaling functions, and a binary matrix called signature. In particular, we
propose a multivariate Bernstein zipper fractal function and study its
approximation properties such as shape preserving aspects, non-negativity, and
coordinate-wise monotonicity. In addition, we derive bounds for the graph of
multivariate zipper fractal functions by imposing conditions on the scaling
factors and the H\"older exponent of the associated germ function and base
function. The Lipschitz continuity of multivariate Bernstein functions is also
studied in order to obtain estimates for the box dimension of multivariate
Bernstein zipper fractal functions.
|
[{'version': 'v1', 'created': 'Wed, 16 Nov 2022 14:21:37 GMT'}
{'version': 'v2', 'created': 'Wed, 7 Dec 2022 14:02:25 GMT'}]
|
2022-12-08
|
[array(['Kumar', 'D.', ''], dtype=object)
array(['Chand', 'A. K. B.', ''], dtype=object)
array(['Massopust', 'P. R.', ''], dtype=object)]
|
18,994 |
2306.00693
|
Ning Ding
|
Ning Ding, Yehui Tang, Zhongqian Fu, Chao Xu, Kai Han, Yunhe Wang
|
GPT4Image: Can Large Pre-trained Models Help Vision Models on Perception
Tasks?
|
GitHub:
https://github.com/huawei-noah/Efficient-Computing/tree/master/GPT4Image/
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The recent upsurge in pre-trained large models (e.g. GPT-4) has swept across
the entire deep learning community. Such powerful large language models (LLMs)
demonstrate advanced generative ability and multimodal understanding
capability, which quickly achieve new state-of-the-art performances on a
variety of benchmarks. The pre-trained LLM usually plays the role as a
universal AI model that can conduct various tasks, including context reasoning,
article analysis and image content comprehension. However, considering the
prohibitively high memory and computational cost for implementing such a large
model, the conventional models (such as CNN and ViT), are still essential for
many visual perception tasks. In this paper, we propose to enhance the
representation ability of ordinary vision models for perception tasks (e.g.
image classification) by taking advantage of large pre-trained models. We
present a new learning paradigm in which the knowledge extracted from large
pre-trained models are utilized to help models like CNN and ViT learn enhanced
representations and achieve better performance. Firstly, we curate a high
quality description set by prompting a multimodal LLM to generate descriptive
text for all training images. Furthermore, we feed these detailed descriptions
into a pre-trained encoder to extract text embeddings with rich semantic
information that encodes the content of images. During training, text
embeddings will serve as extra supervising signals and be aligned with image
representations learned by vision models. The alignment process helps vision
models learn better and achieve higher accuracy with the assistance of
pre-trained LLMs. We conduct extensive experiments to verify that the proposed
algorithm consistently improves the performance for various vision models with
heterogeneous architectures.
|
[{'version': 'v1', 'created': 'Thu, 1 Jun 2023 14:02:45 GMT'}
{'version': 'v2', 'created': 'Wed, 7 Jun 2023 13:59:25 GMT'}]
|
2023-06-08
|
[array(['Ding', 'Ning', ''], dtype=object)
array(['Tang', 'Yehui', ''], dtype=object)
array(['Fu', 'Zhongqian', ''], dtype=object)
array(['Xu', 'Chao', ''], dtype=object)
array(['Han', 'Kai', ''], dtype=object)
array(['Wang', 'Yunhe', ''], dtype=object)]
|
18,995 |
1603.09350
|
Jeff Asaf Dror
|
Jack H. Collins, Csaba Csaki, Jeff Asaf Dror, Salvator Lombardo
|
Novel kinematics from a custodially protected diphoton resonance
|
24 pages, 10 figures; matches version published in PRD
|
Phys. Rev. D 93, 115001 (2016)
|
10.1103/PhysRevD.93.115001
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a simple, well-motivated model based on a custodial symmetry which
describes the tree-level production of a 750 GeV diphoton resonance from a
decay of a singly produced vector-like quark. The model has several novel
features. The identification of the resonance as an SU(2)$_R$ triplet provides
a symmetry explanation for suppression of its decays to hh, WW, and gg.
Moreover, the ratio of the 13 TeV to 8 TeV cross sections can be larger than
single production of a 750 GeV resonance, reaching ratios of up to 7 for TeV
scale vector-like quark masses. This eliminates any tension between the results
from Run I and Run II diphoton searches. Lastly, we study the kinematics of our
signal and conclude that the new production mechanism is consistent with
available experimental distributions in large regions of parameter space but,
depending on the mass of the new vector-like quarks, can be differentiated from
the background with more statistics.
|
[{'version': 'v1', 'created': 'Wed, 30 Mar 2016 20:00:04 GMT'}
{'version': 'v2', 'created': 'Tue, 12 Jul 2016 13:31:53 GMT'}]
|
2016-07-13
|
[array(['Collins', 'Jack H.', ''], dtype=object)
array(['Csaki', 'Csaba', ''], dtype=object)
array(['Dror', 'Jeff Asaf', ''], dtype=object)
array(['Lombardo', 'Salvator', ''], dtype=object)]
|
18,996 |
2107.14482
|
Wolfgang Sch\"afer
|
Izabela Babiarz, Roman Pasechnik, Wolfgang Sch\"afer, Antoni Szczurek
|
Central exclusive production of $\eta_c$ and $\chi_{c0}$ in the
light-front k$_{\perp}$-factorization approach
|
6 pages, 3 figures, submision to SciPost, talk given by I. Babiarz at
the XXVIII International Workshop on Depp-Inelastic Scattering and Related
Subjects (DIS2021)
| null | null | null |
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We study the exclusive production of $J^{PC}=0^{++}, 0^{--}$ charmonium
states in proton-proton collisions at the LHC energies The $pp \to pp\eta_c$
reaction is discussed for the first time. We observe a substantial contribution
from the nonperturbative domain of gluon virtualities, especially for $\eta_c$
production. To model the nonperturbative region better, we utilize models of
the unintegrated gluon distribution based on parametrizations of the color
dipole cross-section.
|
[{'version': 'v1', 'created': 'Fri, 30 Jul 2021 08:15:50 GMT'}]
|
2021-08-02
|
[array(['Babiarz', 'Izabela', ''], dtype=object)
array(['Pasechnik', 'Roman', ''], dtype=object)
array(['Schäfer', 'Wolfgang', ''], dtype=object)
array(['Szczurek', 'Antoni', ''], dtype=object)]
|
18,997 |
1603.07854
|
Masanori Hirai
|
Masanori Hirai
|
Update of HKN Nuclear PDFs
|
8 pages, 6 eps files, JPS Conference Proceedings in press,
International workshop on Neutrino-Nucleus Interactions in the Few-GeV Region
(NuInt15), Osaka, Japan, November 16-21, 2015
| null |
10.7566/JPSCP.12.010024
| null |
hep-ph hep-ex nucl-ex nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We discuss consistency of the nuclear effects between the electromagnetic and
weak interactions. In order to study a possibility of different nuclear effects
in the neutrino DIS process, double differential cross section data are
compared with these values obtained by the HKN07 nuclear parton distribution
functions (nPDFs). Discrepancies are found in the small and large-$x$ regions,
and difference of kinematical value $y$ dependence exists between the $\nu$ and
$\bar{\nu}$ data around $x=0.35$. Moreover, we study statistical significance
of the neutrino DIS data in each $x$ bin and discuss about the possibility of
the different nuclear modifications.
|
[{'version': 'v1', 'created': 'Fri, 25 Mar 2016 09:04:42 GMT'}]
|
2016-12-21
|
[array(['Hirai', 'Masanori', ''], dtype=object)]
|
18,998 |
1509.08661
|
Sebastian Heidenreich
|
Sebastian Heidenreich and J\"orn Dunkel and Sabine H. L. Klapp and
Markus B\"ar
|
Hydrodynamic length-scale selection and effective viscosity in
microswimmer suspensions
|
5 pages, 4 figures
|
Phys. Rev. E 94, 020601 (2016)
|
10.1103/PhysRevE.94.020601
| null |
cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A universal characteristic of mesoscale turbulence in active suspensions is
the emergence of a typical vortex length scale, distinctly different from the
scale-invariance of turbulent high-Reynolds number flows. Collective
length-scale selection has been observed in bacterial fluids, endothelial
tissue and active colloides, yet the physical origins of this phenomenon remain
elusive. Here, we systematically derive an effective fourth-order field theory
from a generic microscopic model that allows us to predict the typical vortex
size in microswimmer suspensions. Building on a self-consistent closure
condition, the derivation shows that the vortex length scale is determined by
the competition between local alignment forces and intermediate-range
hydrodynamic interactions. Vortex structures found in simulations of the theory
agree with recent measurements in Bacillus subtilis suspensions. Moreover, our
approach correctly predicts an effective viscosity enhancement (reduction), as
reported experimentally for puller (pusher) microorganisms.
|
[{'version': 'v1', 'created': 'Tue, 29 Sep 2015 09:43:07 GMT'}
{'version': 'v2', 'created': 'Wed, 30 Sep 2015 15:07:29 GMT'}]
|
2016-08-17
|
[array(['Heidenreich', 'Sebastian', ''], dtype=object)
array(['Dunkel', 'Jörn', ''], dtype=object)
array(['Klapp', 'Sabine H. L.', ''], dtype=object)
array(['Bär', 'Markus', ''], dtype=object)]
|
18,999 |
1810.09374
|
Phan Th\`anh Nam
|
Phan Th\`anh Nam and Robert Salzmann
|
Derivation of 3D energy-critical nonlinear Schr\"odinger equation and
Bogoliubov excitations for Bose gases
|
66 pages, final version to appear in Commun. Math. Phys
| null | null | null |
math-ph math.AP math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We derive the 3D quintic NLS as the mean field limit of a Bose gas with
three-body interactions. The quintic NLS is energy-critical, leading to several
new difficulties in comparison with the cubic NLS which emerges from Bose gases
with pair-interactions. Our method is based on Bogoliubov's approximation,
which also provides the information on the fluctuations around the condensate
in terms of a norm approximation for the N-body wave function.
|
[{'version': 'v1', 'created': 'Mon, 22 Oct 2018 15:43:51 GMT'}
{'version': 'v2', 'created': 'Sun, 18 Nov 2018 10:56:12 GMT'}
{'version': 'v3', 'created': 'Thu, 25 Apr 2019 08:57:28 GMT'}]
|
2019-04-26
|
[array(['Nam', 'Phan Thành', ''], dtype=object)
array(['Salzmann', 'Robert', ''], dtype=object)]
|
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