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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
16,600 |
1610.08308
|
Michal Gulka Michal Gulka
|
Michal Gulka, Emilie Bourgeois, Jaroslav Hruby, Peter Siyushev, Georg
Wachter, Friedrich Aumayr, Philip R. Hemmer, Adam Gali, Fedor Jelezko,
Michael Trupke, Milos Nesladek
|
Pulsed photoelectric coherent manipulation and detection of NV centre
spins in diamond
| null |
Phys. Rev. Applied 7, 044032 (2017)
|
10.1103/PhysRevApplied.7.044032
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Hybrid photoelectric detection of NV magnetic resonances (PDMR) is
anticipated to lead to scalable quantum chip technology. To achieve this goal,
it is crucial to prove that PDMR readout is compatible with the coherent spin
control. Here we present PDMR MW pulse protocols that filter background
currents related to ionization of NS0 defects and achieve a high contrast and
S/N ratio. We demonstrate Rabi and Ramsey protocols on shallow
nitrogen-implanted electronic grade diamond and the coherent readout of ~ 5 NV
spins, as a first step towards the fabrication of scalable photoelectric
quantum devices.
|
[{'version': 'v1', 'created': 'Wed, 26 Oct 2016 13:02:49 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Nov 2016 22:28:32 GMT'}]
|
2017-05-03
|
[array(['Gulka', 'Michal', ''], dtype=object)
array(['Bourgeois', 'Emilie', ''], dtype=object)
array(['Hruby', 'Jaroslav', ''], dtype=object)
array(['Siyushev', 'Peter', ''], dtype=object)
array(['Wachter', 'Georg', ''], dtype=object)
array(['Aumayr', 'Friedrich', ''], dtype=object)
array(['Hemmer', 'Philip R.', ''], dtype=object)
array(['Gali', 'Adam', ''], dtype=object)
array(['Jelezko', 'Fedor', ''], dtype=object)
array(['Trupke', 'Michael', ''], dtype=object)
array(['Nesladek', 'Milos', ''], dtype=object)]
|
16,601 |
1811.01953
|
Vasilii Gvaramadze
|
V.V. Gvaramadze
|
Circumstellar structures around high-mass X-ray binaries
|
7 pages, 8 figures, to appear in Proceed. of the IAU Symp. 346
| null |
10.1017/S1743921318008013
| null |
astro-ph.SR astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Many high-mass X-ray binaries (HMXBs) are runaways. Stellar wind and
radiation of donor stars in HMXBs along with outflows and jets from accretors
interact with the local interstellar medium and produce curious circumstellar
structures. Several such structures are presented and discussed in this
contribution.
|
[{'version': 'v1', 'created': 'Mon, 5 Nov 2018 19:00:01 GMT'}
{'version': 'v2', 'created': 'Wed, 21 Nov 2018 15:08:20 GMT'}]
|
2020-10-06
|
[array(['Gvaramadze', 'V. V.', ''], dtype=object)]
|
16,602 |
1907.13111
|
Stephen Hogan
|
A. Deller and S. D. Hogan
|
Microwave spectroscopy of the $1\mathrm{s}n\mathrm{p}\,^3\mathrm{P}_J$
fine structure of high Rydberg states in $^4$He
|
9 pages, 8 figures
|
Phys. Rev. A 97, 012505 (2018)
|
10.1103/PhysRevA.97.012505
| null |
physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The $1\mathrm{s}n\mathrm{p}\,^3\mathrm{P}_J$ fine structure of high Rydberg
states in helium has been measured by microwave spectroscopy of single-photon
transitions from $1\mathrm{s}n\mathrm{s}\,^3\mathrm{S}_1$ levels in pulsed
supersonic beams. For states with principal quantum numbers in the range from
$n=34$ to 36, the $J = 0 \rightarrow 2$ and $J = 1 \rightarrow 2$ fine
structure intervals were both observed. For values of $n$ between 45 and 51
only the larger $J = 0 \rightarrow 2$ interval was resolved. The experimental
results are in good agreement with theoretical predictions. Detailed
characterization of residual uncancelled electric and magnetic fields in the
experimental apparatus, and calculations of the Stark and Zeeman structures of
the Rydberg states in weak fields, were used to quantify systematic
contributions to the uncertainties in the measurements.
|
[{'version': 'v1', 'created': 'Tue, 30 Jul 2019 17:52:55 GMT'}]
|
2019-07-31
|
[array(['Deller', 'A.', ''], dtype=object)
array(['Hogan', 'S. D.', ''], dtype=object)]
|
16,603 |
2103.14900
|
Jun Song
|
Hai-hong Li, Feng-lan Shao, and Jun Song
|
Production of light flavor and single-charmed hadrons in $pp$ collisions
at $\sqrt{s}=5.02$ TeV in an equal-velocity quark combination model
|
11 pages, 9 figures
| null |
10.1088/1674-1137/ac1ef9
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We apply an equal-velocity quark combination model to study the production of
light-flavor hadrons and single-charmed hadrons at midrapidity in $pp$
collisions at $\sqrt{s}=5.02$ TeV. We find experimental data for $p_{T}$
spectra of $\Omega$ and $\phi$ exhibit a quark number scaling property, which
is a clear signal of quark combination mechanism at hadronization. Experimental
data for $p_T$ spectra of $p$, $\Lambda$, $\Xi$, $\Omega$, $\phi$ and $K^{*0}$
are systematically described by the model. The non-monotonic $p_{T}$ dependence
of $\Omega/\phi$ ratio is naturally explained and we find it is closely related
to the shape of the logarithm of strange quark $p_{T}$ distribution. Using
$p_{T}$ spectra of light-flavor quarks obtained from light-flavor hadrons and a
$p_T$ spectrum of charm quarks which is consistent with perturbative QCD
calculations, the experimental data for differential cross-sections of
$D^{0,+}$, $D_{s}^{+}$ and $\Lambda_{c}^{+}$ as the function of $p_{T}$ are
systematically described. We predict the differential cross-sections of
$\Xi_{c}^{0,+}$ and $\Omega_{c}^{0}$. The ratio $\Xi_{c}^{0,+}/D^{0}$ in our
model is about 0.16 and $\Omega_{c}^{0}/D^{0}$ is about 0.012 due to the
cascade suppression of strangeness. In addition, the predicted
$\Xi_{c}^{0,+}/D^{0}$ and $\Omega_{c}^{0}/D^{0}$ ratios exhibit the
non-monotonic dependence on $p_{T}$ in the low $p_{T}$ range.
|
[{'version': 'v1', 'created': 'Sat, 27 Mar 2021 13:06:53 GMT'}
{'version': 'v2', 'created': 'Sun, 22 Aug 2021 12:17:06 GMT'}]
|
2021-11-17
|
[array(['Li', 'Hai-hong', ''], dtype=object)
array(['Shao', 'Feng-lan', ''], dtype=object)
array(['Song', 'Jun', ''], dtype=object)]
|
16,604 |
math/0312127
|
Emmanuel Dufraine
|
Emmanuel Dufraine
|
Classes d'homotopie de champs de vecteurs Morse-Smale sans singularit\'e
sur les fibr\'es de Seifert
|
Paper in French with a one page english summary. 21 pages
| null | null |
Warwick 19/2003
|
math.DS math.GT
| null |
In the first part of this paper, we consider smooth maps from a compact
orientable 3-manifold without boundary to the 2-sphere. We give a geometric
criterion to decide whether two given maps are homotopic, based on the sets of
points where the maps are equal or antipodal. We extend this criterion to
non-singular vector fields (and co-oriented plane fields) on 3-manifolds.
In the second part, we make use of this criterion to study non-singular
Morse-Smale vector fields on Seifert manifolds, giving a simple proof of a
result of Yano.
|
[{'version': 'v1', 'created': 'Fri, 5 Dec 2003 17:47:01 GMT'}]
|
2007-05-23
|
[array(['Dufraine', 'Emmanuel', ''], dtype=object)]
|
16,605 |
2306.06629
|
Shicheng Tan
|
Shicheng Tan, Weng Lam Tam, Yuanchun Wang, Wenwen Gong, Yang Yang,
Hongyin Tang, Keqing He, Jiahao Liu, Jingang Wang, Shu Zhao, Peng Zhang, Jie
Tang
|
GKD: A General Knowledge Distillation Framework for Large-scale
Pre-trained Language Model
|
accepted for ACL 2023 industry track
| null | null | null |
cs.CL cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Currently, the reduction in the parameter scale of large-scale pre-trained
language models (PLMs) through knowledge distillation has greatly facilitated
their widespread deployment on various devices. However, the deployment of
knowledge distillation systems faces great challenges in real-world
industrial-strength applications, which require the use of complex distillation
methods on even larger-scale PLMs (over 10B), limited by memory on GPUs and the
switching of methods. To overcome these challenges, we propose GKD, a general
knowledge distillation framework that supports distillation on larger-scale
PLMs using various distillation methods. With GKD, developers can build larger
distillation models on memory-limited GPUs and easily switch and combine
different distillation methods within a single framework. Experimental results
show that GKD can support the distillation of at least 100B-scale PLMs and 25
mainstream methods on 8 NVIDIA A100 (40GB) GPUs.
|
[{'version': 'v1', 'created': 'Sun, 11 Jun 2023 09:17:21 GMT'}]
|
2023-06-13
|
[array(['Tan', 'Shicheng', ''], dtype=object)
array(['Tam', 'Weng Lam', ''], dtype=object)
array(['Wang', 'Yuanchun', ''], dtype=object)
array(['Gong', 'Wenwen', ''], dtype=object)
array(['Yang', 'Yang', ''], dtype=object)
array(['Tang', 'Hongyin', ''], dtype=object)
array(['He', 'Keqing', ''], dtype=object)
array(['Liu', 'Jiahao', ''], dtype=object)
array(['Wang', 'Jingang', ''], dtype=object)
array(['Zhao', 'Shu', ''], dtype=object)
array(['Zhang', 'Peng', ''], dtype=object)
array(['Tang', 'Jie', ''], dtype=object)]
|
16,606 |
2301.06592
|
Abolfazl Dinmohammadi
|
Abolfazl Dinmohammadi, Matti Heikinheimo, Nader Mirabolfathi, Kai
Nordlund, Hossein Safari, Sebastian Sassi and Kimmo Tuominen
|
Daily and annual modulation rate of low mass dark matter in silicon
detectors
|
6 pages, 7 figures
| null | null | null |
hep-ph
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Low threshold detectors with single-electron excitation sensitivity to
nuclear recoil events in solid-state detectors are also sensitive to the
crystalline structure of the target and, therefore, to the recoil direction via
the anisotropic energy threshold for defect creation in the detector material.
We investigate this effect and the resulting daily and annual modulation of the
observable event rate for dark matter mass range from 0.2 to 5 GeV/c$^{2}$ in a
silicon detector. We show that the directional dependence of the threshold
energy and the motion of the laboratory result in modulation of the event rate
which can be utilized to enhance the sensitivity of the experiment. We
demonstrate that the spin-independent interaction rate in silicon is
significant for both high and low dark matter masses. For low-mass dark matter,
we show that the average interaction rate in silicon is larger than germanium,
making silicon an important target for identifying dark matter from
backgrounds. We find 8 and 12 hours periodicity in the time series of event
rates for silicon detector due to the 45-degree symmetry in the silicon crystal
structure.
|
[{'version': 'v1', 'created': 'Mon, 16 Jan 2023 20:18:18 GMT'}]
|
2023-01-18
|
[array(['Dinmohammadi', 'Abolfazl', ''], dtype=object)
array(['Heikinheimo', 'Matti', ''], dtype=object)
array(['Mirabolfathi', 'Nader', ''], dtype=object)
array(['Nordlund', 'Kai', ''], dtype=object)
array(['Safari', 'Hossein', ''], dtype=object)
array(['Sassi', 'Sebastian', ''], dtype=object)
array(['Tuominen', 'Kimmo', ''], dtype=object)]
|
16,607 |
1711.07707
|
Anna Dyrdal
|
L. Karwacki, A. Dyrdal, J. Berakdar, J. Barnas
|
Current-induced spin polarization in isotropic k-cubed Rashba model:
Theoretical study for p-doped semiconductor heterostructures and perovskite
oxides interfaces
|
10 pages, 6 figures
|
Phys. Rev. B 97, 235302 (2018)
|
10.1103/PhysRevB.97.235302
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using the Matsubara Green's function formalism we calculate the temperature
dependence of the nonequilibrium spin polarization induced by an external
electric field in the presence of spin-orbit coupling. The model Hamiltonian
includes an isotropic k-cubed form of the Rashba spin-orbit interaction. Such a
Hamiltonian captures the electronic and spin properties of two-dimensional
electron (hole) gas at the surfaces or interfaces of transition metal oxides or
in p-doped semiconductor heterostructures. The induced spin polarization is
calculated for the nonmagnetic as well as magnetic electron/hole gas. Relation
of the spin polarization to the Berry curvature is also discussed.
|
[{'version': 'v1', 'created': 'Tue, 21 Nov 2017 10:40:21 GMT'}]
|
2018-06-13
|
[array(['Karwacki', 'L.', ''], dtype=object)
array(['Dyrdal', 'A.', ''], dtype=object)
array(['Berakdar', 'J.', ''], dtype=object)
array(['Barnas', 'J.', ''], dtype=object)]
|
16,608 |
1605.04396
|
Guang-Han Cao
|
Yi Liu, Ya-Bin Liu, Zhang-Tu Tang, Hao Jiang, Zhi-Cheng Wang, Abduweli
Ablimit, Wen-He Jiao, Qian Tao, Chun-Mu Feng, Zhu-An Xu and Guang-Han Cao
|
Superconductivity and Ferromagnetism in Hole-Doped RbEuFe$_4$As$_4$
|
9 pages, 6 figures,the crystal structure parameters in Table 1 were
corrected
|
Phys. Rev. B 93, 214503 (2016)
|
10.1103/PhysRevB.93.214503
| null |
cond-mat.supr-con cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We discover a robust coexistence of superconductivity and ferromagnetism in
an iron arsenide RbEuFe$_4$As$_4$. The new material crystallizes in an
intergrowth structure of RbFe$_2$As$_2$ and EuFe$_2$As$_2$, such that the Eu
sublattice turns out to be primitive instead of being body-centered in
EuFe$_2$As$_2$. The FeAs layers, featured by asymmetric As coordinations, are
hole doped due to charge homogenization. Our combined measurements of
electrical transport, magnetization and heat capacity unambiguously and
consistently indicate bulk superconductivity at 36.5 K in the FeAs layers and
ferromagnetism at 15 K in the Eu sublattice. Interestingly, the Eu-spin
ferromagnetic ordering belongs to a rare third-order transition, according to
the Ehrenfest classification of phase transition. We also identify an
additional anomaly at $\sim$ 5 K, which is possibly associated with the
interplay between superconductivity and ferromagnetism.
|
[{'version': 'v1', 'created': 'Sat, 14 May 2016 09:08:09 GMT'}
{'version': 'v2', 'created': 'Mon, 23 May 2016 03:50:12 GMT'}
{'version': 'v3', 'created': 'Sat, 28 May 2016 08:01:09 GMT'}]
|
2016-06-15
|
[array(['Liu', 'Yi', ''], dtype=object)
array(['Liu', 'Ya-Bin', ''], dtype=object)
array(['Tang', 'Zhang-Tu', ''], dtype=object)
array(['Jiang', 'Hao', ''], dtype=object)
array(['Wang', 'Zhi-Cheng', ''], dtype=object)
array(['Ablimit', 'Abduweli', ''], dtype=object)
array(['Jiao', 'Wen-He', ''], dtype=object)
array(['Tao', 'Qian', ''], dtype=object)
array(['Feng', 'Chun-Mu', ''], dtype=object)
array(['Xu', 'Zhu-An', ''], dtype=object)
array(['Cao', 'Guang-Han', ''], dtype=object)]
|
16,609 |
1010.1829
|
Andrea Piccolroaz
|
Andrea Piccolroaz, Davide Bigoni, Alessandro Gajo
|
An elastoplastic framework for granular materials becoming cohesive
through mechanical densification. Part I - small strain formulation
|
42 pages, 27 figures
|
European Journal of Mechanics A/Solids 25, 334-357, 2006
|
10.1016/j.euromechsol.2005.10.001
| null |
math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Mechanical densification of granular bodies is a process in which a loose
material becomes increasingly cohesive as the applied pressure increases. A
constitutive description of this process faces the formidable problem that
granular and dense materials have completely different mechanical behaviours
(nonlinear elastic properties, yield limit, plastic flow and hardening laws),
which must both be, in a sense, included in the formulation. A treatment of
this problem is provided here, so that a new phenomenological, elastoplastic
constitutive model is formulated, calibrated by experimental data, implemented
and tested, that is capable of describing the transition between granular and
fully dense states of a given material. The formulation involves a novel use of
elastoplastic coupling to describe the dependence of cohesion and elastic
properties on the plastic strain. The treatment falls within small strain
theory, which is thought to be appropriate in several situations; however, a
generalization of the model to large strain is provided in Part II of this
paper.
|
[{'version': 'v1', 'created': 'Sat, 9 Oct 2010 10:26:49 GMT'}]
|
2015-05-20
|
[array(['Piccolroaz', 'Andrea', ''], dtype=object)
array(['Bigoni', 'Davide', ''], dtype=object)
array(['Gajo', 'Alessandro', ''], dtype=object)]
|
16,610 |
1110.6916
|
Yeow-Khiang Chia
|
Yeow-Khiang Chia, Himanshu Asnani, Tsachy Weissman
|
Multi-Terminal Source Coding With Action Dependent Side Information
|
23 pages
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider multi-terminal source coding with a single encoder and multiple
decoders where either the encoder or the decoders can take cost constrained
actions which affect the quality of the side information present at the
decoders. For the scenario where decoders take actions, we characterize the
rate-cost trade-off region for lossless source coding, and give an
achievability scheme for lossy source coding for two decoders which is optimum
for a variety of special cases of interest. For the case where the encoder
takes actions, we characterize the rate-cost trade-off for a class of lossless
source coding scenarios with multiple decoders. Finally, we also consider
extensions to other multi-terminal source coding settings with actions, and
characterize the rate -distortion-cost tradeoff for a case of successive
refinement with actions.
|
[{'version': 'v1', 'created': 'Mon, 31 Oct 2011 19:46:51 GMT'}]
|
2011-11-01
|
[array(['Chia', 'Yeow-Khiang', ''], dtype=object)
array(['Asnani', 'Himanshu', ''], dtype=object)
array(['Weissman', 'Tsachy', ''], dtype=object)]
|
16,611 |
1002.0848
|
Timothy Brandt
|
Timothy D. Brandt, Rita Tojeiro, \'Eric Aubourg, Alan Heavens, Raul
Jimenez, and Michael A. Strauss
|
The Ages of Type Ia Supernova Progenitors
|
15 pages, 8 figures, 3 tables, AJ accepted. Moderate changes to match
accepted version, including a table of all SNe used
|
Astronomical Journal 140 (2010) 804-816
|
10.1088/0004-6256/140/3/804
| null |
astro-ph.GA astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using light curves and host galaxy spectra of 101 Type Ia supernovae (SNe Ia)
with redshift $z \lesssim 0.3$ from the SDSS Supernova Survey (SDSS-SN), we
derive the SN Ia rate as a function of progenitor age (the delay time
distribution, or DTD). We use the VESPA stellar population synthesis algorithm
to analyze the SDSS spectra of all galaxies in the field searched by SDSS-SN,
giving us a reference sample of 77,000 galaxies for our SN Ia hosts. Our method
does not assume any a priori shape for the DTD and therefore is minimally
parametric. We present the DTD in physical units for high stretch (luminous,
slow declining) and low stretch (subluminous, fast declining) supernovae in
three progenitor age bins. We find strong evidence of two progenitor channels:
one that produces high stretch SNe Ia $\lesssim 400$ Myr after the birth of the
progenitor system, and one that produces low stretch SNe Ia with a delay
$\gtrsim 2.4$ Gyr. We find that each channel contributes roughly half of the
Type Ia rate in our reference sample. We also construct the average spectra of
high stretch and low stretch SN Ia host galaxies, and find that the difference
of these spectra looks like a main sequence B star with nebular emission lines
indicative of star formation. This supports our finding that there are two
populations of SNe Ia, and indicates that the progenitors of high stretch SNe
are at the least associated with very recent star formation in the last few
tens of Myr. Our results provide valuable constraints for models of Type Ia
progenitors and may help improve the calibration of SNe Ia as standard candles.
|
[{'version': 'v1', 'created': 'Wed, 3 Feb 2010 21:22:28 GMT'}
{'version': 'v2', 'created': 'Tue, 27 Jul 2010 20:05:32 GMT'}]
|
2015-03-13
|
[array(['Brandt', 'Timothy D.', ''], dtype=object)
array(['Tojeiro', 'Rita', ''], dtype=object)
array(['Aubourg', 'Éric', ''], dtype=object)
array(['Heavens', 'Alan', ''], dtype=object)
array(['Jimenez', 'Raul', ''], dtype=object)
array(['Strauss', 'Michael A.', ''], dtype=object)]
|
16,612 |
2207.06356
|
Novanto Yudistira
|
Rizki Ramadhan Fitra, Novanto Yudistira, Wayan Firdaus Mahmudy
|
Deep Transformer Model with Pre-Layer Normalization for COVID-19 Growth
Prediction
| null | null | null | null |
cs.LG cs.AI
|
http://creativecommons.org/licenses/by/4.0/
|
Coronavirus disease or COVID-19 is an infectious disease caused by the
SARS-CoV-2 virus. The first confirmed case caused by this virus was found at
the end of December 2019 in Wuhan City, China. This case then spread throughout
the world, including Indonesia. Therefore, the COVID-19 case was designated as
a global pandemic by WHO. The growth of COVID-19 cases, especially in
Indonesia, can be predicted using several approaches, such as the Deep Neural
Network (DNN). One of the DNN models that can be used is Deep Transformer which
can predict time series. The model is trained with several test scenarios to
get the best model. The evaluation is finding the best hyperparameters. Then,
further evaluation was carried out using the best hyperparameters setting of
the number of prediction days, the optimizer, the number of features, and
comparison with the former models of the Long Short-Term Memory (LSTM) and
Recurrent Neural Network (RNN). All evaluations used metric of the Mean
Absolute Percentage Error (MAPE). Based on the results of the evaluations, Deep
Transformer produces the best results when using the Pre-Layer Normalization
and predicting one day ahead with a MAPE value of 18.83. Furthermore, the model
trained with the Adamax optimizer obtains the best performance among other
tested optimizers. The performance of the Deep Transformer also exceeds other
test models, which are LSTM and RNN.
|
[{'version': 'v1', 'created': 'Sun, 10 Jul 2022 03:48:45 GMT'}]
|
2022-07-14
|
[array(['Fitra', 'Rizki Ramadhan', ''], dtype=object)
array(['Yudistira', 'Novanto', ''], dtype=object)
array(['Mahmudy', 'Wayan Firdaus', ''], dtype=object)]
|
16,613 |
math/9406217
|
Haskell P. Rosenthal
|
Haskell P. Rosenthal
|
Differences of bounded semi-continuous functions, I
| null | null | null |
Banach Archive 6/20/94
|
math.FA
| null |
Structural properties are given for $D(K)$, the Banach algebra of (complex)
differences of bounded semi-continuous functons on a metric space $K$. For
example, it is proved that if all finite derived sets of $K$ are non-empty,
then a complex function $\varphi$ operates on $D(K)$ (i.e., $\varphi\circ f\in
D(K)$ for all $f\in D(K)$) if and only if $\varphi$ is locally Lipschitz.
Another example: if $W\subset K$ and $g\in D(W)$ is real-valued, then it is
proved that $g$ extends to a $\tilde g$ in $D(K)$ with $\|\tilde g\|_{D(K)} =
\|g\|_{D(W)}$. Considerable attention is devoted to $SD(K)$, the closure in
$D(K)$ of the set of simple functions in $D(K)$. Thus it is proved that every
member of $SD(K)$ is a (complex) difference of semi-continuous functions in
$SD(K)$, and that $|f|$ belongs to $SD(K)$ if $f$ does. An intrinsic
characterization of $SD(K)$ is given, in terms of transfinite oscillation sets.
Using the transfinite oscillations, alternate proofs are given of the results
of Chaatit, Mascioni and Rosenthal that functions of finite Baire-index belong
to $SD(K)$, and that $SD(K)\ne D(K)$ for interesting $K$. It is proved that the
``variable oscillation criterion'' characterizes functions belonging to
$B_{1/4}(K)$, thus answering an open problem raised in earlier work of Haydon,
Odell and Rosenthal. It is also proved that $f$ belongs to $B_{1/4}(K)$ (if
and) only if $f$ is a uniform limit of simple $D$-functions of uniformly
bounded $D$-norm iff $\osc_\omega f$ is bounded; the last equivalence has also
been obtained by V.~Farmaki, using other methods.
|
[{'version': 'v1', 'created': 'Mon, 20 Jun 1994 17:26:30 GMT'}]
|
2016-09-06
|
[array(['Rosenthal', 'Haskell P.', ''], dtype=object)]
|
16,614 |
1901.02318
|
Camillo De Lellis
|
camillo De Lellis and L\'aszl\'o Sz\'ekelyhidi Jr
|
On turbulence and geometry: from Nash to Onsager
| null | null | null | null |
math.AP math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This article is a short nontechnical survey of recent progresses in fluid
dynamics and differential geometry, relating a conjecture of Lars Onsager to
the work of Nash on isometric embeddings.
|
[{'version': 'v1', 'created': 'Tue, 8 Jan 2019 14:23:30 GMT'}]
|
2019-01-09
|
[array(['De Lellis', 'camillo', ''], dtype=object)
array(['Székelyhidi', 'László', 'Jr'], dtype=object)]
|
16,615 |
1411.0618
|
Dmitri Kharzeev
|
Koji Hashimoto and Dmitri E. Kharzeev
|
Entropic destruction of heavy quarkonium in non-Abelian plasma from
holography
|
11 pages, 4 figures
|
Phys. Rev. D 90, 125012 (2014)
|
10.1103/PhysRevD.90.125012
|
OU-HET-837, RIKEN-MP-95
|
hep-th hep-lat hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Lattice QCD indicates a large amount of entropy associated with the heavy
quark-antiquark pair immersed in the quark-gluon plasma. This entropy grows as
a function of the inter-quark distance giving rise to an entropic force that
can be very effective in dissociating the bound quarkonium states. In addition,
the lattice data show a very sharp peak in the heavy quark-antiquark entropy at
the deconfinement transition. Since the quark-gluon plasma around the
deconfinement transition is strongly coupled, we employ the holographic
correspondence to study the entropy associated with the heavy quark-antiquark
pair in two theories: i) ${\cal{N}}=4$ supersymmetric Yang-Mills and ii) a
confining Yang-Mills theory obtained by compactification on a Kaluza-Klein
circle. In both cases we find the entropy growing with the inter-quark distance
and evaluate the effect of the corresponding entropic forces. In the case ii),
we find a sharp peak in the entropy near the deconfinement transition, in
agreement with the lattice QCD results. This peak in our holographic
description arises because the heavy quark pair acts as an eyewitness of the
black hole formation in the bulk -- the process that describes the
deconfinement transition. In terms of the boundary theory, this entropy likely
emerges from the entanglement of a "long string" connecting the quark and
antiquark with the rest of the system.
|
[{'version': 'v1', 'created': 'Mon, 3 Nov 2014 19:25:34 GMT'}]
|
2014-12-24
|
[array(['Hashimoto', 'Koji', ''], dtype=object)
array(['Kharzeev', 'Dmitri E.', ''], dtype=object)]
|
16,616 |
hep-ex/0408062
|
Wouter Hulsbergen
|
The BABAR Collaboration, B. Aubert, et al
|
Measurements of the Branching Fraction and CP-Violating Asymmetries of
B0 --> K0S Pi0 Decays
|
18 pages, 6 postscript figures, submitted to ICHEP2004
| null | null |
BABAR-CONF-04/30, SLAC-PUB-10617
|
hep-ex
| null |
We present measurements of the branching fraction and time-dependent
CP-violating (CPV) asymmetries in B0 --> K0S Pi0 decays based on 227 million
Y(4S) --> BBbar decays collected with the BaBar detector at the PEP-II
asymmetric-energy B factory at SLAC. We obtain a branching fraction B(B0 --> K0
Pi0) = (11.4 +/- 0.9 +/- 0.6) x 10^{-6}, the magnitude of the direct CPV
asymmetry C = 0.06 +/- 0.18 +/- 0.06 and the magnitude of the CPV asymmetry in
the interference between mixing and decay S = 0.35 +0.30/-0.33 +/- 0.04, where
the first error is statistical and the second systematic. All results are
preliminary.
|
[{'version': 'v1', 'created': 'Sat, 14 Aug 2004 22:21:09 GMT'}]
|
2007-05-23
|
[array(['The BABAR Collaboration', '', ''], dtype=object)
array(['Aubert', 'B.', ''], dtype=object)]
|
16,617 |
astro-ph/0207477
|
Michael C. Liu
|
Michael C. Liu (IfA/Hawaii)
|
Disks around Young Brown Dwarfs
|
4 pages; to appear in Proceedings of IAU 211: Brown Dwarfs, in press
| null | null | null |
astro-ph
| null |
We present some results from a systematic survey for disks around
spectroscopically identified young brown dwarfs and very low mass stars. We
find that ~75% of our sample show intrinsic IR excesses, indicative of
circum(sub)stellar disks. The observed excesses are correlated with Halpha
emission, consistent with a common disk accretion origin. Because the excesses
are modest, conventional analyses using only IR colors would have missed most
of the sources with disks. In the same star-forming regions, we find that disks
around brown dwarfs and T Tauri stars are contemporaneous; assuming coevality,
this demonstrates that substellar disks are at least as long-lived as stellar
disks. Altogether, the frequency and properties of circumstellar disks are
similar from the stellar regime down to the substellar and planetary-mass
regime. This offers compelling evidence of a common origin for most stars and
brown dwarfs.
|
[{'version': 'v1', 'created': 'Mon, 22 Jul 2002 20:01:42 GMT'}]
|
2007-05-23
|
[array(['Liu', 'Michael C.', '', 'IfA/Hawaii'], dtype=object)]
|
16,618 |
1808.08315
|
Wenbin Zhang
|
Wenbin Zhang, Jianwu Wang, Daeho Jin, Lazaros Oreopoulos, Zhibo Zhang
|
A Deterministic Self-Organizing Map Approach and its Application on
Satellite Data based Cloud Type Classification
|
Accepted to IEEE Big Data 2018
| null | null | null |
cs.LG stat.ML
|
http://creativecommons.org/publicdomain/zero/1.0/
|
A self-organizing map (SOM) is a type of competitive artificial neural
network, which projects the high-dimensional input space of the training
samples into a low-dimensional space with the topology relations preserved.
This makes SOMs supportive of organizing and visualizing complex data sets and
have been pervasively used among numerous disciplines with different
applications. Notwithstanding its wide applications, the self-organizing map is
perplexed by its inherent randomness, which produces dissimilar SOM patterns
even when being trained on identical training samples with the same parameters
every time, and thus causes usability concerns for other domain practitioners
and precludes more potential users from exploring SOM based applications in a
broader spectrum. Motivated by this practical concern, we propose a
deterministic approach as a supplement to the standard self-organizing map. In
accordance with the theoretical design, the experimental results with satellite
cloud data demonstrate the effective and efficient organization as well as
simplification capabilities of the proposed approach.
|
[{'version': 'v1', 'created': 'Fri, 24 Aug 2018 21:28:36 GMT'}
{'version': 'v2', 'created': 'Wed, 31 Oct 2018 19:02:57 GMT'}]
|
2018-11-02
|
[array(['Zhang', 'Wenbin', ''], dtype=object)
array(['Wang', 'Jianwu', ''], dtype=object)
array(['Jin', 'Daeho', ''], dtype=object)
array(['Oreopoulos', 'Lazaros', ''], dtype=object)
array(['Zhang', 'Zhibo', ''], dtype=object)]
|
16,619 |
hep-th/0003139
|
T. Damour
|
Thibault Damour and Marc Henneaux
|
Chaos in Superstring Cosmology
|
Revtex, 4 pages, submitted to PRL
|
Phys.Rev.Lett. 85 (2000) 920-923
|
10.1103/PhysRevLett.85.920
|
IHES/P/00/20, ULB-TH-00/07, NSF-ITP-0019
|
hep-th astro-ph gr-qc hep-ph
| null |
It is shown that the general solution near a spacelike singularity of the
Einstein-dilaton-p-form field equations relevant to superstring theories and
M-theory exhibits an oscillatory behaviour of the
Belinskii-Khalatnikov-Lifshitz type. String dualities play a significant role
in the analysis.
|
[{'version': 'v1', 'created': 'Thu, 16 Mar 2000 12:04:00 GMT'}]
|
2009-10-31
|
[array(['Damour', 'Thibault', ''], dtype=object)
array(['Henneaux', 'Marc', ''], dtype=object)]
|
16,620 |
1105.5260
|
Rahul Mishra
|
Rahul Mishra, Bahniman Ghosh
|
Non Equilibrium Green's Function Analysis of Double Gate SiGe and GaAs
Tunnel FETs
| null | null | null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In recent past extensive device simulation work has already been done on
TFETs. Various ways have been suggested to model TFETs. In our paper we look at
one such particular way to model these devices. The Non equilibrium green's
formalism has proved effective in modeling nano scale devices. We model
complete SiGe and GaAs tunnel FET for the first time using the NEGF formalism,
also taking acoustic phonon scattering into account. We analyze them on the
grounds of I-V curve, Ion-Ioff ration and subthreshold slope. The poisson
equation and the equilibrium statistical mechanical equation has been solved by
providing the potential profile.
|
[{'version': 'v1', 'created': 'Thu, 26 May 2011 11:31:33 GMT'}]
|
2011-05-27
|
[array(['Mishra', 'Rahul', ''], dtype=object)
array(['Ghosh', 'Bahniman', ''], dtype=object)]
|
16,621 |
2112.09937
|
Ang\`ele Foley
|
Ang\`ele M. Foley, Joshua Kazdan, Larissa Kr\"oll, Sof\'ia Mart\'inez
Alberga, Oleksii Melnyk, Alexander Tenenbaum
|
Transplanting Trees: Chromatic Symmetric Function Results through the
Group Algebra of $S_n$
|
10 pages; small typos corrected
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
One of the major outstanding conjectures in the study of chromatic symmetric
functions (CSF's) states that trees are uniquely determined by their CSF's.
Though verified on graphs of order up to twenty-nine, this result has been
proved only for certain subclasses of trees. Using the definition of the CSF
that emerges via the Frobenius character map applied to $\mathbb{C}[S_n]$, we
offer new algebraic proofs of several results about the CSF's of trees.
Additionally, we prove that a "parent function" of the CSF defined in the group
ring of $S_n$ can uniquely determine trees, providing further support for
Stanley's conjecture.
|
[{'version': 'v1', 'created': 'Sat, 18 Dec 2021 13:59:18 GMT'}
{'version': 'v2', 'created': 'Thu, 20 Jan 2022 20:14:17 GMT'}]
|
2022-01-24
|
[array(['Foley', 'Angèle M.', ''], dtype=object)
array(['Kazdan', 'Joshua', ''], dtype=object)
array(['Kröll', 'Larissa', ''], dtype=object)
array(['Alberga', 'Sofía Martínez', ''], dtype=object)
array(['Melnyk', 'Oleksii', ''], dtype=object)
array(['Tenenbaum', 'Alexander', ''], dtype=object)]
|
16,622 |
math/0310050
|
Eric Katz
|
Eric Edward Katz
|
Topological Recursion Relations by Localization
|
14 pages, 15 Postscript figures, 3 pictex figures; not to be
published; the June 2012 update fixes the annoying spelling error in the
title and nothing else
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let M_{g,n} be the moduli space of stable genus g curves with n marked
points. M_{g,n} has boundary strata consisting of nodal curves. The fundamental
classes of these boundary strata may be linearly dependent in the Chow group
A_*(M_{g,n}). Relations among these boundary strata can be found by exploiting
a localization trick involving stable maps to P^1. This note explains this
trick and applies it to give a new derivation of Getzler's relation among
codimension 2 boundary strata in M_{1,4}.
|
[{'version': 'v1', 'created': 'Fri, 3 Oct 2003 23:30:23 GMT'}
{'version': 'v2', 'created': 'Fri, 15 Jun 2012 19:54:33 GMT'}]
|
2012-06-18
|
[array(['Katz', 'Eric Edward', ''], dtype=object)]
|
16,623 |
2108.07801
|
Ghulam Mustafa
|
G. Mustafa, Ibrar Hussain, Wu-Ming Liu
|
Quasi Periodic Oscillations of Test Particles and Red-Blue Shifts of the
Photons Emitted By the Charged Test Particles Orbiting the Charged Black Hole
in the Presence of Quintessence and Clouds of Strings
|
20 pages, 14 figures
| null | null | null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Here we examine the circular motion of test particles and photons in the
spacetime geometry of charged black hole surrounded by quintessence and clouds
of strings for the equation of state parameter $\omega_q=-2/3$. We observe that
there exist stable circular orbits in this geometry for very small values of
the quintessence and string cloud parameters, i.e., $0<\gamma<<1$ and
$0<\alpha<<1$. We observe that if the values of $\gamma$ and $\alpha$ increase,
the test particle can more easily escape the gravitational field of the black
hole. While the effect of the charge $Q$ of the black hole on the effective
potential is just opposite to that of the $\gamma$ and $\alpha$. Further, we
investigate the quasi-periodic oscillations of test particles near the stable
circular orbits. With the increasing values of $Q$, the stable circular orbits
get away from the central object; therefore, one can observe lower epicyclic
frequencies away from the central gravitating source with the increase in the
values of $Q$. The redshift parameter $z$ of the photons emitted by the charged
test particles moving in the stable circular orbits around the central source
increases with an increase in the parameter $\alpha$ and decreases with an
increase in the values of the charge $Q$. In the Banados-Silk-West (BSW)
process study, we note that the centre of mass-energy at the horizon of this
Riessner-Nordstrom black hole with quintessence and string clouds increases
indefinitely if the charge of one of the colliding particles attains its
critical value. For a better understanding of the study, we show the dependence
of the radii of the circular orbits, energy and angular momentum of the
particles, effective potential, effective force, quasi-periodic oscillations
and red-blue shifts of photons of the test particles in the circular orbits on
the parameters $\alpha$, $\gamma$ and $Q$ graphically.
|
[{'version': 'v1', 'created': 'Mon, 16 Aug 2021 20:10:39 GMT'}]
|
2021-08-19
|
[array(['Mustafa', 'G.', ''], dtype=object)
array(['Hussain', 'Ibrar', ''], dtype=object)
array(['Liu', 'Wu-Ming', ''], dtype=object)]
|
16,624 |
2003.01548
|
Thi Kim Thoa Thieu
|
Emilio N. M. Cirillo and Matteo Colangeli and Adrian Muntean and T. K.
Thoa Thieu
|
When diffusion faces drift: consequences of exclusion processes for
bi--directional pedestrian flows
|
19 pages, 12 figures
| null |
10.1016/j.physd.2020.132651
| null |
cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Stochastic particle--based models are useful tools for describing the
collective movement of large crowds of pedestrians in crowded confined
environments. Using descriptions based on the simple exclusion process, two
populations of particles, mimicking pedestrians walking in a built environment,
enter a room from two opposite sides. One population is passive -- being
unaware of the local environment; particles belonging to this group perform a
symmetric random walk. The other population has information on the local
geometry in the sense that as soon as particles enter a visibility zone, a
drift activates them. Their self-propulsion leads them towards the exit. This
second type of species is referred here as active. The assumed crowdedness
corresponds to a near--jammed scenario. The main question we ask in this paper
is: Can we induce modifications of the dynamics of the active particles to
improve the outgoing current of the passive particles? To address this
question, we compute occupation number profiles and currents for both
populations in selected parameter ranges. Besides observing the more classical
faster--is--slower effect, new features appear as prominent like the
non--monotonicity of currents, self--induced phase separation within the active
population, as well as acceleration of passive particles for large--drift
regimes of active particles.
|
[{'version': 'v1', 'created': 'Mon, 2 Mar 2020 13:54:30 GMT'}]
|
2020-08-26
|
[array(['Cirillo', 'Emilio N. M.', ''], dtype=object)
array(['Colangeli', 'Matteo', ''], dtype=object)
array(['Muntean', 'Adrian', ''], dtype=object)
array(['Thieu', 'T. K. Thoa', ''], dtype=object)]
|
16,625 |
1605.02776
|
Karl Dieter Reinartz KDR
|
Karl Dieter Reinartz
|
Chebychev interpolations of the Gamma and Polygamma Functions and their
analytical properties
|
13 pages, 7 figures, 5 tables
| null | null | null |
math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Chebychev approximations are given for the Gamma and the Polygamma functions
in only one contiguous intervall [1..inf] with a definable maximal relative
error. The approximations need about three coefficients per decimal until a
checked precision of 100 decimal digits.
|
[{'version': 'v1', 'created': 'Mon, 2 May 2016 11:57:31 GMT'}]
|
2016-05-11
|
[array(['Reinartz', 'Karl Dieter', ''], dtype=object)]
|
16,626 |
1003.3257
|
Brian Lacki
|
Brian C. Lacki, Todd A. Thompson, Eliot Quataert, Abraham Loeb, Eli
Waxman
|
On The GeV & TeV Detections of the Starburst Galaxies M82 & NGC 253
|
15 pages, emulateapj format, accepted to ApJ, Table 1 fixed
|
ApJ (2011), 734, 107
|
10.1088/0004-637X/734/2/107
| null |
astro-ph.HE astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The GeV and TeV emission from M82 and NGC 253 observed by Fermi, HESS, and
VERITAS constrains the physics of cosmic rays (CRs) in these dense starbursts.
We argue that the gamma rays are predominantly hadronic in origin, as expected
by previous studies. The measured fluxes imply that pionic losses are efficient
for CR protons in both galaxies: we show that a fraction F_cal ~ 0.2 - 0.4 of
the energy injected in high energy primary CR protons is lost to inelastic
proton-proton collisions (pion production) before escape, producing gamma rays,
neutrinos, and secondary electrons and positrons. We discuss the factor ~2
uncertainties in this estimate, including supernova rate and leptonic
contributions to the GeV-TeV emission. We argue that gamma-ray data on ULIRGs
like Arp 220 can test whether M82 and NGC 253 are truly calorimetric, and we
present upper limits on Arp 220 from the Fermi data. We show that the observed
ratio of the GeV to GHz fluxes of the starbursts suggests that non-synchrotron
cooling processes are important for cooling the CR electron/positron
population. We briefly reconsider previous predictions in light of the
gamma-ray detections, including the starburst contribution to the gamma-ray
background and CR energy densities. Finally, as a guide for future studies, we
list the brightest star-forming galaxies on the sky and present updated
predictions for their gamma-ray and neutrino fluxes.
|
[{'version': 'v1', 'created': 'Tue, 16 Mar 2010 21:32:06 GMT'}
{'version': 'v2', 'created': 'Sat, 23 Apr 2011 00:57:22 GMT'}
{'version': 'v3', 'created': 'Fri, 29 Apr 2011 18:40:20 GMT'}]
|
2015-05-18
|
[array(['Lacki', 'Brian C.', ''], dtype=object)
array(['Thompson', 'Todd A.', ''], dtype=object)
array(['Quataert', 'Eliot', ''], dtype=object)
array(['Loeb', 'Abraham', ''], dtype=object)
array(['Waxman', 'Eli', ''], dtype=object)]
|
16,627 |
hep-ph/0305171
|
Peter Landshoff
|
A. Donnachie and P. V. Landshoff
|
Evolution at small x
|
To appear in the special issue of Acta Physica Polonica to celebrate
the 65th Birthday of Professor Jan Kwiecinski. 12 pages with 9 figures
|
Acta Phys.Polon.B34:2989-3000,2003
| null | null |
hep-ph
| null |
At present there is no correct theory of evolution of F_2(x,Q^2) at small x.
It is a mixture of hard and soft pomeron exchange and perturbative QCD very
successfully describes the evolution of the hard-pomeron component. This allows
the gluon density to be calculated. It is somewhat different from what is
conventionally supposed, but it leads to a clean PQCD description of the data
for the charm structure function. Perturbative QCD breaks down for the
evolution of the soft-pomeron component of F_2(x,Q^2).
|
[{'version': 'v1', 'created': 'Thu, 15 May 2003 19:11:59 GMT'}
{'version': 'v2', 'created': 'Thu, 15 May 2003 20:52:42 GMT'}]
|
2014-11-17
|
[array(['Donnachie', 'A.', ''], dtype=object)
array(['Landshoff', 'P. V.', ''], dtype=object)]
|
16,628 |
1909.12975
|
Tao Yin
|
Oscar P. Bruno, Tao Yin
|
Regularized integral equation methods for elastic scattering problems in
three dimensions
|
27 pages, 14 figures, 3 tables
| null |
10.1016/j.jcp.2020.109350
| null |
physics.comp-ph cs.NA math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents novel methodologies for the numerical simulation of
scattering of elastic waves by both closed and open surfaces in
three-dimensional space. The proposed approach utilizes new integral
formulations as well as an extension to the elastic context of the efficient
high-order singular-integration methods~\cite{BG18} introduced recently for the
acoustic case. In order to obtain formulations leading to iterative solvers
(GMRES) which converge in small numbers of iterations we investigate,
theoretically and computationally, the character of the spectra of various
operators associated with the elastic-wave Calder\'on relation---including some
of their possible compositions and combinations. In particular, by relying on
the fact that the eigenvalues of the composite operator $NS$ are bounded away
from zero and infinity, new uniquely-solvable, low-GMRES-iteration integral
formulation for the closed-surface case are presented. The introduction of
corresponding low-GMRES-iteration equations for the open-surface equations
additionally requires, for both spectral quality as well as accuracy and
efficiency, use of weighted versions of the classical integral operators to
match the singularity of the unknown density at edges. Several numerical
examples demonstrate the accuracy and efficiency of the proposed methodology.
|
[{'version': 'v1', 'created': 'Fri, 27 Sep 2019 22:30:11 GMT'}]
|
2020-04-22
|
[array(['Bruno', 'Oscar P.', ''], dtype=object)
array(['Yin', 'Tao', ''], dtype=object)]
|
16,629 |
1105.1139
|
Shaun Ault
|
Shaun V. Ault and William Singer
|
On the Homology of Elementary Abelian Groups as Modules over the
Steenrod Algebra
|
6 pages + references
|
Shaun V. Ault and William Singer. On the homology of elementary
Abelian groups as modules over the Steenrod algebra. Journal of Pure and
Applied Algebra 215 (2011), 2847-2852
| null | null |
math.AT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We examine the dual of the so-called "hit problem", the latter being the
problem of determining a minimal generating set for the cohomology of products
of infinite projective spaces as module over the Steenrod Algebra $\mathcal{A}$
at the prime 2. The dual problem is to determine the set of $\mathcal
{A}$-annihilated elements in homology. The set of $\mathcal{A}$-annihilateds
has been shown by David Anick to be a free associative algebra. In this note we
prove that, for each $k \geq 0$, the set of {\it $k$ partially
$\mathcal{A}$-annihilateds}, the set of elements that are annihilated by $Sq^i$
for each $i\leq 2^k$, itself forms a free associative algebra.
|
[{'version': 'v1', 'created': 'Thu, 5 May 2011 18:27:49 GMT'}]
|
2014-07-09
|
[array(['Ault', 'Shaun V.', ''], dtype=object)
array(['Singer', 'William', ''], dtype=object)]
|
16,630 |
1705.03447
|
Patrick Tunney
|
John Ellis, Malcolm Fairbairn and Patrick Tunney
|
Anomaly-Free Models for Flavour Anomalies
|
18 pages, 1 figure; v2 to match version accepted by EPJ C, note added
extending discussion of experimental constraints and appendix added with an
additional scenario for anomaly cancellation
| null |
10.1140/epjc/s10052-018-5725-0
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We explore the constraints imposed by the cancellation of triangle anomalies
on models in which the flavour anomalies reported by LHCb and other experiments
are due to an extra U(1)' gauge boson Z'. We assume universal and rational
U(1)' charges for the first two generations of left-handed quarks and of
right-handed up-type quarks but allow different charges for their
third-generation counterparts. If the right-handed charges vanish, cancellation
of the triangle anomalies requires all the quark U(1)' charges to vanish, if
there are either no exotic fermions or there is only one Standard Model singlet
dark matter (DM) fermion. There are non-trivial anomaly-free models with more
than one such `dark' fermion, or with a single DM fermion if right-handed
up-type quarks have non-zero U(1)' charges. In some of the latter models the
U(1)' couplings of the first- and second-generation quarks all vanish,
weakening the LHC Z' constraint, and in some other models the DM particle has
purely axial couplings, weakening the direct DM scattering constraint. We also
consider models in which anomalies are cancelled via extra vector-like leptons,
showing how the prospective LHC Z' constraint may be weakened because the
$Z^\prime \to \mu^+ \mu^-$ branching ratio is suppressed relative to other
decay modes.
|
[{'version': 'v1', 'created': 'Tue, 9 May 2017 17:49:43 GMT'}
{'version': 'v2', 'created': 'Mon, 12 Mar 2018 13:09:43 GMT'}]
|
2018-04-18
|
[array(['Ellis', 'John', ''], dtype=object)
array(['Fairbairn', 'Malcolm', ''], dtype=object)
array(['Tunney', 'Patrick', ''], dtype=object)]
|
16,631 |
1903.00643
|
Nan Li
|
Nan Li, Ilya Kolmanovsky, Anouck Girard
|
An analytical safe approximation to joint chance-constrained programming
with additive Gaussian noises
|
7 pages, 3 figures
| null | null | null |
math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a safe approximation to joint chance-constrained programming where
the constraint functions are additively dependent on a normally-distributed
random vector. The approximation is analytical, meaning that it requires
neither numerical integrations nor sampling-based probability approximations.
Under mild assumptions, the approximation is a standard nonlinear program. We
compare this new safe approximation to another analytical safe approximation
for joint chance-constrained programming based on Boole's inequality through
two examples representing the constrained control of linear Gaussian-Markov
models. It is shown that our proposed safe approximation has a lower degree of
conservatism compared to the one based on Boole's inequality.
|
[{'version': 'v1', 'created': 'Sat, 2 Mar 2019 07:19:04 GMT'}]
|
2019-03-05
|
[array(['Li', 'Nan', ''], dtype=object)
array(['Kolmanovsky', 'Ilya', ''], dtype=object)
array(['Girard', 'Anouck', ''], dtype=object)]
|
16,632 |
0912.4795
|
Paul Woon Yin Lee
|
Paul W.Y. Lee
|
New Computable Necessary Conditions for the Regularity Theory of Optimal
Transportation
|
28 pages
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give new computable necessary conditions for a class of optimal
transportation problems to have smooth solutions.
|
[{'version': 'v1', 'created': 'Thu, 24 Dec 2009 05:38:05 GMT'}
{'version': 'v2', 'created': 'Sat, 22 May 2010 04:32:15 GMT'}]
|
2010-05-25
|
[array(['Lee', 'Paul W. Y.', ''], dtype=object)]
|
16,633 |
nlin/0307004
|
Ilya V. Pogorelov
|
Ilya V. Pogorelov and Henry E. Kandrup
|
Energy Trapping in Loaded String Models with Long- and Short-Range
Couplings
|
11 pages, 7 figures; high-resolution, color versions of the figures
are available at http://www.astro.ufl.edu/~galaxy/papers/
| null |
10.1196/annals.1350.007
| null |
nlin.CD astro-ph physics.acc-ph
| null |
This note illustrates the possibility in simple loaded string models of
trapping most of the system energy in a single degree of freedom for very long
times, demonstrating in particular that the robustness of the trapping is
enhanced by increasing the `connectance' of the system, i.e., the extent to
which many degrees of freedom are coupled directly by the interaction
Hamiltonian, and/or the strength of the couplings.
|
[{'version': 'v1', 'created': 'Wed, 2 Jul 2003 00:20:08 GMT'}]
|
2016-03-23
|
[array(['Pogorelov', 'Ilya V.', ''], dtype=object)
array(['Kandrup', 'Henry E.', ''], dtype=object)]
|
16,634 |
gr-qc/0312055
|
Campo David
|
David Campo and Renaud Parentani
|
Space-time correlations in inflationary spectra, a wave packet analysis
|
revised version, accepted for publication in PRD ; the
complementarity and the usefullness of wave packet analysis have been
emphasized ; 32 pages, 6 figures
|
Phys.Rev. D70 (2004) 105020
|
10.1103/PhysRevD.70.105020
| null |
gr-qc astro-ph hep-th
| null |
The inflationary mechanism of mode amplification predicts that the state of
each mode with a given wave vector is correlated to that of its partner mode
with the opposite vector. This implies nonlocal correlations which leave their
imprint on temperature anisotropies in the cosmic microwave background. Their
spatial properties are best revealed by using local wave packets. This analysis
shows that all density fluctuations giving rise the large scale structures
originate in pairs which are born near the reheating. In fact each local
density fluctuation is paired with an oppositely moving partner with opposite
amplitude. To obtain these results we first apply a ``wave packet
transformation'' with respect to one argument of the two point correlation
function. A finer understanding of the correlations is then reached by making
use of coherent states. The knowledge of the velocity field is required to
extract the contribution of a single pair of wave packets. Otherwise, there is
a two-folded degeneracy which gives three aligned wave packets arising from two
pairs. The applicability of these methods to observational data is briefly
discussed.
|
[{'version': 'v1', 'created': 'Tue, 9 Dec 2003 17:01:55 GMT'}
{'version': 'v2', 'created': 'Mon, 12 Jul 2004 14:26:22 GMT'}]
|
2009-11-10
|
[array(['Campo', 'David', ''], dtype=object)
array(['Parentani', 'Renaud', ''], dtype=object)]
|
16,635 |
2112.14226
|
Marc Illa
|
Marc Illa (for the NPLQCD Collaboration)
|
Towards robust constraints on nuclear effective field theory from
lattice QCD
|
9 pages, 3 figures. Talk presented at the 38th International
Symposium on Lattice Field Theory, LATTICE2021 26th-30th July, 2021
Zoom/Gather@Massachusetts Institute of Technology
| null |
10.22323/1.396.0378
| null |
hep-lat hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We will discuss several new results from the NPLQCD Collaboration that
combine lattice QCD results on (hyper)nuclear systems at unphysical pion masses
together with nuclear effective field theories. Two-baryon channels with
strangeness $0$ to $-4$ are analyzed, with findings that point to interesting
symmetries observed in hypernuclear forces as predicted in the limit of QCD
with a large number of colors. Also, several matrix elements of light nuclei
are studied. The tritium axial charge, related to the Gamow-Teller matrix
element, and the longitudinal momentum fraction of $^3$He that is carried by
the isovector combination of $u$ and $d$ are extracted and extrapolated to the
physical point. For this latter case, it can be seen how including lattice
results to experimental determinations can have imminent potential to enable
more precise determinations and to reveal the QCD origins of the EMC effect.
|
[{'version': 'v1', 'created': 'Tue, 28 Dec 2021 17:21:14 GMT'}]
|
2022-09-21
|
[array(['Illa', 'Marc', '', 'for the NPLQCD Collaboration'], dtype=object)]
|
16,636 |
nucl-th/0204066
|
Egle Tomasi-Gustafsson
|
Michail P. Rekalo and Egle Tomasi-Gustafsson
|
Threshold $J/\psi-$ production in nucleon-nucleon collisions
|
17 pages, 6 figures
|
NewJ.Phys.4:68,2002
|
10.1088/1367-2630/4/1/368
| null |
nucl-th
| null |
We analyze $J/\psi-$ production in nucleon-nucleon collisions near threshold
in the framework of a general model independent formalism, which can be applied
to any reaction $N+N\to N+N+V^0$, where $V^0=\omega$, $\phi$, or $J/\psi$. Such
reactions show large isotopic effects: a large difference for $pp$- and
$pn$-collisions, which is due to the different spin structure of the
corresponding matrix elements. The analysis of the spin structure and of the
polarization observables is based on symmetry properties of the strong
interaction. Using existing experimental data on the different decays of
$J/\psi-$meson, we suggest a model for $N+N\to N+N+J/\psi$, based on
$t-$channel $\eta+\pi$-exchanges. We predict polarization phenomena for the
$n+p\to n+p+J/\psi$-reaction and the ratio of cross sections for $np$ and
$pp$-collisions. For the processes $\eta(\pi)+N\to N+J/\psi$ we apply two
different approaches: vector meson exchange and local four-particle
interaction. In both cases we find larger $J/\psi$-production in
$np$-collisions, with respect to $pp$-collisions.
|
[{'version': 'v1', 'created': 'Fri, 26 Apr 2002 07:44:04 GMT'}]
|
2008-11-26
|
[array(['Rekalo', 'Michail P.', ''], dtype=object)
array(['Tomasi-Gustafsson', 'Egle', ''], dtype=object)]
|
16,637 |
1105.2321
|
Emily Rauscher
|
Emily Rauscher (1) and Kristen Menou (2) ((1) University of Arizona,
(2) Columbia University)
|
The Role of Drag in the Energetics of Strongly Forced Exoplanet
Atmospheres
|
25 pages, 3 figures, 1 table, ApJ accepted; minor revisions
| null |
10.1088/0004-637X/745/1/78
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In contrast to the Earth, where frictional heating is typically negligible,
we show that drag mechanisms could act as an important heat source in the
strongly-forced atmospheres of some exoplanets, with the potential to alter the
circulation. We modify the standard formalism of the atmospheric energy cycle
to explicitly track the loss of kinetic energy and the associated frictional
(re)heating, for application to exoplanets such as the asymmetrically heated
"hot Jupiters" and gas giants on highly eccentric orbits. We establish that an
understanding of the dominant drag mechanisms and their dependence on local
atmospheric conditions is critical for accurate modeling, not just in their
ability to limit wind speeds, but also because they could possibly change the
energetics of the circulation enough to alter the nature of the flow. We
discuss possible sources of drag and estimate the strength necessary to
significantly influence the atmospheric energetics. As we show, the frictional
heating depends on the magnitude of kinetic energy dissipation as well as its
spatial variation, so that the more localized a drag mechanism is, the weaker
it can be and still affect the circulation. We also use the derived formalism
to estimate the rate of numerical loss of kinetic energy in a few previously
published hot Jupiter models with and without magnetic drag and find it to be
surprisingly large, at 5-10% of the incident stellar irradiation.
|
[{'version': 'v1', 'created': 'Wed, 11 May 2011 21:01:54 GMT'}
{'version': 'v2', 'created': 'Wed, 19 Oct 2011 02:38:51 GMT'}]
|
2015-05-28
|
[array(['Rauscher', 'Emily', ''], dtype=object)
array(['Menou', 'Kristen', ''], dtype=object)]
|
16,638 |
1804.02242
|
Christos Kalaitzis
|
Fabrizio Grandoni and Christos Kalaitzis and Rico Zenklusen
|
Improved Approximation for Tree Augmentation: Saving by Rewiring
| null | null | null | null |
cs.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Tree Augmentation Problem (TAP) is a fundamental network design problem
in which we are given a tree and a set of additional edges, also called
\emph{links}. The task is to find a set of links, of minimum size, whose
addition to the tree leads to a $2$-edge-connected graph. A long line of
results on TAP culminated in the previously best known approximation guarantee
of $1.5$ achieved by a combinatorial approach due to Kortsarz and Nutov [ACM
Transactions on Algorithms 2016], and also by an SDP-based approach by Cheriyan
and Gao [Algorithmica 2017]. Moreover, an elegant LP-based
$(1.5+\epsilon)$-approximation has also been found very recently by Fiorini,
Gro\ss, K\"onemann, and Sanit\'a [SODA 2018]. In this paper, we show that an
approximation factor below $1.5$ can be achieved, by presenting a
$1.458$-approximation that is based on several new techniques.
|
[{'version': 'v1', 'created': 'Fri, 6 Apr 2018 12:58:31 GMT'}]
|
2018-04-09
|
[array(['Grandoni', 'Fabrizio', ''], dtype=object)
array(['Kalaitzis', 'Christos', ''], dtype=object)
array(['Zenklusen', 'Rico', ''], dtype=object)]
|
16,639 |
cond-mat/0207332
|
Adrian Huerta
|
Adrian Huerta, Gerardo G. Naumis
|
Evidence of a glass transition induced by rigidity self-organization in
a network forming fluid
|
7 pages, 8 figures
| null |
10.1103/PhysRevB.66.184204
| null |
cond-mat.dis-nn cond-mat.stat-mech
| null |
A Monte Carlo method is used in order to simulate the competition between the
molecular relaxation and crystallization times in the formation of a glass. The
results show that nucleation is avoided during supercooling and produce
self-organization in the sense of the rigidity theory, where the number of
geometrical constraints due to bonding and excluded volume are compared with
the degress of freedom available to the system. Following this idea, glass
transitions were obtained by producing self-organization, and in the case of
geometrical frustration, self-organization is naturally observed.
|
[{'version': 'v1', 'created': 'Fri, 12 Jul 2002 22:24:56 GMT'}]
|
2009-11-07
|
[array(['Huerta', 'Adrian', ''], dtype=object)
array(['Naumis', 'Gerardo G.', ''], dtype=object)]
|
16,640 |
2303.14358
|
Vincent S. Tseng
|
Ying-Chen Lin, Vincent S. Tseng
|
Multi-view knowledge distillation transformer for human action
recognition
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recently, Transformer-based methods have been utilized to improve the
performance of human action recognition. However, most of these studies assume
that multi-view data is complete, which may not always be the case in
real-world scenarios. Therefore, this paper presents a novel Multi-view
Knowledge Distillation Transformer (MKDT) framework that consists of a teacher
network and a student network. This framework aims to handle incomplete human
action problems in real-world applications. Specifically, the multi-view
knowledge distillation transformer uses a hierarchical vision transformer with
shifted windows to capture more spatial-temporal information. Experimental
results demonstrate that our framework outperforms the CNN-based method on
three public datasets.
|
[{'version': 'v1', 'created': 'Sat, 25 Mar 2023 04:47:31 GMT'}]
|
2023-03-28
|
[array(['Lin', 'Ying-Chen', ''], dtype=object)
array(['Tseng', 'Vincent S.', ''], dtype=object)]
|
16,641 |
1209.3546
|
Seth Marvel
|
Seth A. Marvel, Hyunsuk Hong, Anna Papush, Steven H. Strogatz
|
Encouraging moderation: Clues from a simple model of ideological
conflict
|
9 pages, 5 figures
|
Phys. Rev. Lett. 109, 118702 (2012)
|
10.1103/PhysRevLett.109.118702
| null |
nlin.AO math.DS physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Some of the most pivotal moments in intellectual history occur when a new
ideology sweeps through a society, supplanting an established system of beliefs
in a rapid revolution of thought. Yet in many cases the new ideology is as
extreme as the old. Why is it then that moderate positions so rarely prevail?
Here, in the context of a simple model of opinion spreading, we test seven
plausible strategies for deradicalizing a society and find that only one of
them significantly expands the moderate subpopulation without risking its
extinction in the process.
|
[{'version': 'v1', 'created': 'Mon, 17 Sep 2012 04:14:34 GMT'}]
|
2015-06-11
|
[array(['Marvel', 'Seth A.', ''], dtype=object)
array(['Hong', 'Hyunsuk', ''], dtype=object)
array(['Papush', 'Anna', ''], dtype=object)
array(['Strogatz', 'Steven H.', ''], dtype=object)]
|
16,642 |
1603.00392
|
Brian Jackson
|
Brian Jackson, Emily Jensen, Sarah Peacock, Phil Arras, and Kaloyan
Penev
|
Tidal Decay and Stable Roche-Lobe Overflow of Short-Period Gaseous
Exoplanets
|
Accepted to "Celestial Mechanics and Dynamical Astronomy" special
issue on tides. Several changes based on referee comments, including to the
title of the paper. Some new analysis of non-conservative (but still stable)
mass transfer as well. Article repository and data files linked to here --
http://www.astrojack.com/research/
| null |
10.1007/s10569-016-9704-1
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Many gaseous exoplanets in short-period orbits are on the verge or are in the
process of Roche-lobe overflow (RLO). Moreover, orbital stability analysis
shows tides can drive many hot Jupiters to spiral inevitably toward their host
stars. Thus, the coupled processes of orbital evolution and RLO likely shape
the observed distribution of close-in exoplanets and may even be responsible
for producing some of the short-period rocky planets. However, the exact
outcome for an overflowing planet depends on its internal response to mass
loss, and the accompanying orbital evolution can act to enhance or inhibit RLO.
In this study, we apply the fully-featured and robust Modules for Experiments
in Stellar Astrophysics (MESA) suite to model RLO of short-period gaseous
planets. We show that, although the detailed evolution may depend on several
properties of the planetary system, it is largely determined by the core mass
of the overflowing gas giant. In particular, we find that the orbital expansion
that accompanies RLO often stops and reverses at a specific maximum period that
depends on the core mass. We suggest that RLO may often strand the remnant of a
gas giant near this orbital period, which provides an observational prediction
that can corroborate the hypothesis that short-period gas giants undergo RLO.
We conduct a preliminary comparison of this prediction to the observed
population of small, short-period planets and find some planets in orbits that
may be consistent with this picture. To the extent that we can establish some
short-period planets are indeed the remnants of gas giants, that population can
elucidate the properties of gas giant cores, the properties of which remain
largely unconstrained.
|
[{'version': 'v1', 'created': 'Tue, 1 Mar 2016 18:30:41 GMT'}
{'version': 'v2', 'created': 'Mon, 23 May 2016 18:00:27 GMT'}]
|
2016-07-06
|
[array(['Jackson', 'Brian', ''], dtype=object)
array(['Jensen', 'Emily', ''], dtype=object)
array(['Peacock', 'Sarah', ''], dtype=object)
array(['Arras', 'Phil', ''], dtype=object)
array(['Penev', 'Kaloyan', ''], dtype=object)]
|
16,643 |
2005.07018
|
Sa Wang
|
Sa Wang, Wei Dai, Ben-Wei Zhang, and Enke Wang
|
$Z^0$ boson associated b-jet production in high-energy nuclear
collisions
|
13 pages, 12 figures, 1 table. The version to appear in CPC
|
Chin.Phys.C 47 (2023) 5, 054102
|
10.1088/1674-1137/acc1ca
| null |
hep-ph nucl-ex nucl-th
|
http://creativecommons.org/licenses/by/4.0/
|
The production of vector boson tagged heavy quark jets potentially provides
new tools to probe the jet quenching effect. In this paper, we present the
first theoretical study on the angular correlations ($\Delta\phi_{bZ}$),
transverse momentum imbalance ($x_{bZ}$), and nuclear modification factor
($I_{AA}$) of $Z^0$ boson tagged b-jets in heavy-ion collisions, which was
performed using a Monte Carlo transport model. We find that the medium
modification of the $\Delta\phi_{bZ}$ for $Z^0\,+\,$b-jet has a weaker
dependence on $\Delta\phi_{bZ}$ than that for $Z^0\,+\,$jet, and the
modification patterns are sensitive to the initial jet $p_T$ distribution.
Additionally, with the high purity of the quark jet in $Z^0\,+\,$(b-)jet
production, we calculate the momentum imbalance $x_{bZ}$ and the nuclear
modification factor $I_{AA}$ of $Z^0\,+\,$b-jet in Pb+Pb collisions. We observe
a smaller $\Delta \left\langle x_{jZ} \right\rangle$ and larger $I_{AA}$ of
$Z^0\,+\,$b-jet in Pb+Pb collisions relative to those of $Z^0\,+\,$jet, which
may be an indication of the mass effect of jet quenching and can be tested in
future measurements.
|
[{'version': 'v1', 'created': 'Thu, 14 May 2020 14:33:25 GMT'}
{'version': 'v2', 'created': 'Thu, 30 Mar 2023 08:56:50 GMT'}]
|
2023-04-07
|
[array(['Wang', 'Sa', ''], dtype=object)
array(['Dai', 'Wei', ''], dtype=object)
array(['Zhang', 'Ben-Wei', ''], dtype=object)
array(['Wang', 'Enke', ''], dtype=object)]
|
16,644 |
2208.11960
|
Bao Yiming
|
Yiming Bao, Xu Zhao and Dahong Qian
|
FusePose: IMU-Vision Sensor Fusion in Kinematic Space for Parametric
Human Pose Estimation
|
11 pages,8 figures
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
There exist challenging problems in 3D human pose estimation mission, such as
poor performance caused by occlusion and self-occlusion. Recently, IMU-vision
sensor fusion is regarded as valuable for solving these problems. However,
previous researches on the fusion of IMU and vision data, which is
heterogeneous, fail to adequately utilize either IMU raw data or reliable
high-level vision features. To facilitate a more efficient sensor fusion, in
this work we propose a framework called \emph{FusePose} under a parametric
human kinematic model. Specifically, we aggregate different information of IMU
or vision data and introduce three distinctive sensor fusion approaches:
NaiveFuse, KineFuse and AdaDeepFuse. NaiveFuse servers as a basic approach that
only fuses simplified IMU data and estimated 3D pose in euclidean space. While
in kinematic space, KineFuse is able to integrate the calibrated and aligned
IMU raw data with converted 3D pose parameters. AdaDeepFuse further develops
this kinematical fusion process to an adaptive and end-to-end trainable manner.
Comprehensive experiments with ablation studies demonstrate the rationality and
superiority of the proposed framework. The performance of 3D human pose
estimation is improved compared to the baseline result. On Total Capture
dataset, KineFuse surpasses previous state-of-the-art which uses IMU only for
testing by 8.6\%. AdaDeepFuse surpasses state-of-the-art which uses IMU for
both training and testing by 8.5\%. Moreover, we validate the generalization
capability of our framework through experiments on Human3.6M dataset.
|
[{'version': 'v1', 'created': 'Thu, 25 Aug 2022 09:35:27 GMT'}]
|
2022-08-26
|
[array(['Bao', 'Yiming', ''], dtype=object)
array(['Zhao', 'Xu', ''], dtype=object)
array(['Qian', 'Dahong', ''], dtype=object)]
|
16,645 |
1410.8432
|
Zhijian Wang
|
Zhijian Wang and Bin Xu
|
Cycling in stochastic general equilibrium
|
16 pages, 8 figures, keywords: general equilibrium; time reversal
symmetry; entanglement of deviations; angular momentum; macroeconomic
engineering
| null | null | null |
nlin.AO q-fin.GN
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
By generalizing the measurements on the game experiments of mixed strategy
Nash equilibrium, we study the dynamical pattern in a representative dynamic
stochastic general equilibrium (DSGE). The DSGE model describes the
entanglements of the three variables (output gap [$y$], inflation [$\pi$] and
nominal interest rate [$r$]) which can be presented in 3D phase space. We find
that, even though the trajectory of $\pi\!-\!y\!-\!r$ in phase space appears
highly stochastic, it can be visualized and quantified. It exhibits as
clockwise cycles, counterclockwise cycles and weak cycles, respectively, when
projected onto $\pi\!-\!y$, $y\!-\!r$ and $r\!-\!\pi$ phase planes. We find
also that empirical data of United State (1960-2013) significantly exhibit same
cycles. The resemblance between the cycles in general equilibrium and the
cycles in mixed strategy Nash equilibrium suggest that, there generally exists
dynamical fine structures accompanying with equilibrium. The fine structure,
describing the entanglement of the non-equilibrium (the constantly deviating
from the equilibrium), displays as endless cycles.
|
[{'version': 'v1', 'created': 'Thu, 30 Oct 2014 16:36:31 GMT'}]
|
2014-10-31
|
[array(['Wang', 'Zhijian', ''], dtype=object)
array(['Xu', 'Bin', ''], dtype=object)]
|
16,646 |
1807.06945
|
Taposh Banerjee
|
Taposh Banerjee, Gene Whipps, Prudhvi Gurram and Vahid Tarokh
|
Cyclostationary Statistical Models and Algorithms for Anomaly Detection
Using Multi-Modal Data
| null | null | null | null |
eess.SP cs.LG stat.ME stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A framework is proposed to detect anomalies in multi-modal data. A deep
neural network-based object detector is employed to extract counts of objects
and sub-events from the data. A cyclostationary model is proposed to model
regular patterns of behavior in the count sequences. The anomaly detection
problem is formulated as a problem of detecting deviations from learned
cyclostationary behavior. Sequential algorithms are proposed to detect
anomalies using the proposed model. The proposed algorithms are shown to be
asymptotically efficient in a well-defined sense. The developed algorithms are
applied to a multi-modal data consisting of CCTV imagery and social media posts
to detect a 5K run in New York City.
|
[{'version': 'v1', 'created': 'Mon, 2 Jul 2018 14:56:37 GMT'}]
|
2018-07-19
|
[array(['Banerjee', 'Taposh', ''], dtype=object)
array(['Whipps', 'Gene', ''], dtype=object)
array(['Gurram', 'Prudhvi', ''], dtype=object)
array(['Tarokh', 'Vahid', ''], dtype=object)]
|
16,647 |
1806.05341
|
Qingqiu Huang
|
Qingqiu Huang, Yuanjun Xiong, Yu Xiong, Yuqi Zhang, Dahua Lin
|
From Trailers to Storylines: An Efficient Way to Learn from Movies
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The millions of movies produced in the human history are valuable resources
for computer vision research. However, learning a vision model from movie data
would meet with serious difficulties. A major obstacle is the computational
cost -- the length of a movie is often over one hour, which is substantially
longer than the short video clips that previous study mostly focuses on. In
this paper, we explore an alternative approach to learning vision models from
movies. Specifically, we consider a framework comprised of a visual module and
a temporal analysis module. Unlike conventional learning methods, the proposed
approach learns these modules from different sets of data -- the former from
trailers while the latter from movies. This allows distinctive visual features
to be learned within a reasonable budget while still preserving long-term
temporal structures across an entire movie. We construct a large-scale dataset
for this study and define a series of tasks on top. Experiments on this dataset
showed that the proposed method can substantially reduce the training time
while obtaining highly effective features and coherent temporal structures.
|
[{'version': 'v1', 'created': 'Thu, 14 Jun 2018 02:52:09 GMT'}]
|
2018-06-15
|
[array(['Huang', 'Qingqiu', ''], dtype=object)
array(['Xiong', 'Yuanjun', ''], dtype=object)
array(['Xiong', 'Yu', ''], dtype=object)
array(['Zhang', 'Yuqi', ''], dtype=object)
array(['Lin', 'Dahua', ''], dtype=object)]
|
16,648 |
2106.12176
|
Bao-Xuan Zhu
|
Ming-Jian Ding, Bao-Xuan Zhu
|
Stability of combinatorial polynomials and its applications
|
We delete original Proposition 4.16 and adjust the order of some
References. We also correct some typos
| null | null | null |
math.CO math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The aim of this paper is to make a systematical study on the stability of
polynomials in combinatorics.
Applying the characterizations of Borcea and Br\"and\'en concerning linear
operators preserving stability, we present criteria for real stability and
Hurwitz stability. We also give a criterion for Hurwitz stability of the
Tur\'{a}n expressions. As applications, we derive some stability results
occurred in the literature in a unified manner. In addition, we obtain the
Hurwitz stability of Tur\'{a}n expressions for alternating runs polynomials of
types $A$ and $B$ and solve a conjecture concerning Hurwitz stability of
alternating runs polynomials defined on a dual set of Stirling permutations.
Furthermore, we prove that the Hurwitz stability of any symmetric polynomial
implies its semi-$\gamma$-positivity. We study a class of symmetric polynomials
and derive many nice properties including Hurwitz stability,
semi-$\gamma$-positivity, non $\gamma$-positivity, unimodality, strong
$q$-log-convexity, the Jacobi continued fraction expansion and the relation
with derivative polynomials. In particular, these properties of the alternating
descents polynomials of types $A$ and $B$ can be obtained in a unified
approach.
Finally, we use real stability to prove a criterion for zeros interlacing
between a polynomial and its reciprocal polynomial, which implies the
alternatingly increasing property. This criterion extends a result of
Br\"and\'en and Solus and unifies such properties for many combinatorial
polynomials, including ascent polynomials for $k$-ary words, descent
polynomials on signed Stirling permutations and $q$-analog of descent
polynomials on colored permutations, and so on. We prove the alternatingly
increasing property and zeros interlacing for two kinds of peak polynomials on
the dual set of Stirling permutations.
|
[{'version': 'v1', 'created': 'Wed, 23 Jun 2021 05:52:11 GMT'}
{'version': 'v2', 'created': 'Thu, 24 Jun 2021 11:11:42 GMT'}]
|
2021-06-25
|
[array(['Ding', 'Ming-Jian', ''], dtype=object)
array(['Zhu', 'Bao-Xuan', ''], dtype=object)]
|
16,649 |
2109.08892
|
Masato Okado
|
Masato Okado, Ryo Takenaka
|
Parafermionic bases of standard modules for twisted affine Lie algebras
of type $A_{2l-1}^{(2)}$, $D_{l+1}^{(2)}$, $E_6^{(2)}$ and $D_4^{(3)}$
|
16 pages, 2 figures
| null | null | null |
math.RT math.QA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using the bases of principal subspaces for twisted affine Lie algebras except
$A_{2l}^{(2)}$ by Butorac and Sadowski, we construct bases of the highest
weight modules of highest weight $k\Lambda_0$ and parafermionic spases for the
same affine Lie algebras. As a result, we obtain their character formulas
conjectured in arXiv:math/0102113.
|
[{'version': 'v1', 'created': 'Sat, 18 Sep 2021 10:00:17 GMT'}]
|
2021-09-21
|
[array(['Okado', 'Masato', ''], dtype=object)
array(['Takenaka', 'Ryo', ''], dtype=object)]
|
16,650 |
hep-ph/0305301
|
Jeffrey Bowers
|
Jeffrey A. Bowers (MIT)
|
Color Superconducting Phases of Cold Dense Quark Matter
|
Ph.D. thesis, submitted to the MIT Department of Physics, May 2003.
Five chapters and two appendices (180 pages, 30 figures). Chapters 1 and 5
are new: chapter 1 is a detailed review of previous work, and chapter 5
discusses applications of the crystalline phase for the physics of pulsar
spin glitches and cold trapped atoms
| null |
10.1103/PhysRevA.68.063818
| null |
hep-ph
| null |
We investigate color superconducting phases of cold quark matter at densities
relevant for the interiors of compact stars. At these densities, electrically
neutral and weak-equilibrated quark matter can have unequal numbers of up,
down, and strange quarks. The QCD interaction favors Cooper pairs that are
antisymmetric in color and in flavor, and a crystalline color superconducting
phase can occur which accommodates pairing between flavors with unequal number
densities. In the crystalline color superconductor, quarks of different flavor
form Cooper pairs with nonzero total momentum, yielding a condensate that
varies in space like a sum of plane waves. Rotational and translational
symmetry are spontaneously broken. We use a Ginzburg-Landau method to evaluate
candidate crystal structures and predict that the favored structure is
face-centered-cubic. We predict a robust crystalline phase with gaps comparable
in magnitude to those of the color-flavor-locked phase that occurs when the
flavor number densities are equal. Crystalline color superconductivity will be
a generic feature of the QCD phase diagram, occurring wherever quark matter
that is not color-flavor locked is to be found. If a very large flavor
asymmetry forbids even the crystalline state, single-flavor pairing will occur;
we investigate this and other spin-one color superconductors in a survey of
generic color, flavor, and spin pairing channels. Our predictions for the
crystalline phase may be tested in an ultracold gas of fermionic atoms, where a
similar crystalline superfluid state can occur. If a layer of crystalline quark
matter occurs inside of a compact star, it could pin rotational vortices,
leading to observable pulsar glitches.
|
[{'version': 'v1', 'created': 'Tue, 27 May 2003 20:32:31 GMT'}]
|
2013-05-29
|
[array(['Bowers', 'Jeffrey A.', '', 'MIT'], dtype=object)]
|
16,651 |
1705.07263
|
Nicholas Carlini
|
Nicholas Carlini, David Wagner
|
Adversarial Examples Are Not Easily Detected: Bypassing Ten Detection
Methods
| null | null | null | null |
cs.LG cs.CR cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Neural networks are known to be vulnerable to adversarial examples: inputs
that are close to natural inputs but classified incorrectly. In order to better
understand the space of adversarial examples, we survey ten recent proposals
that are designed for detection and compare their efficacy. We show that all
can be defeated by constructing new loss functions. We conclude that
adversarial examples are significantly harder to detect than previously
appreciated, and the properties believed to be intrinsic to adversarial
examples are in fact not. Finally, we propose several simple guidelines for
evaluating future proposed defenses.
|
[{'version': 'v1', 'created': 'Sat, 20 May 2017 05:59:23 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Nov 2017 04:07:05 GMT'}]
|
2017-11-02
|
[array(['Carlini', 'Nicholas', ''], dtype=object)
array(['Wagner', 'David', ''], dtype=object)]
|
16,652 |
1511.07232
|
Joel R\"ontynen
|
Joel R\"ontynen and Teemu Ojanen
|
Chern mosaic - topology of chiral superconductivity on ferromagnetic
adatom lattices
|
9 pages, 8 figures
|
Phys. Rev. B 93, 094521 (2016)
|
10.1103/PhysRevB.93.094521
| null |
cond-mat.mes-hall cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work we will explore the properties of superconducting surfaces
decorated by two-dimensional ferromagnetic adatom lattices. As discovered
recently [R\"ontynen and Ojanen, Phys. Rev. Lett. \textbf{114}, 236803 (2015)],
in the presence of a Rashba spin-orbit coupling these systems may support
topological superconductivity with complex phase diagrams and high Chern
numbers. We show how the long-range hopping nature of the effective low-energy
theory generically gives rise to a phase diagram covered by a \emph{Chern
mosaic} -- a rich pattern of topological phases with large Chern numbers. We
study different lattice geometries and the dependence of energy gaps and
abundance of different phases as a function of system parameters. Our findings
establish the studied system as one of the richest platforms for topological
matter known to date.
|
[{'version': 'v1', 'created': 'Mon, 23 Nov 2015 14:20:38 GMT'}
{'version': 'v2', 'created': 'Wed, 2 Mar 2016 11:54:17 GMT'}]
|
2016-03-30
|
[array(['Röntynen', 'Joel', ''], dtype=object)
array(['Ojanen', 'Teemu', ''], dtype=object)]
|
16,653 |
1603.09211
|
I. T. Drummond
|
I. T. Drummond
|
Bimetric QED
|
39 pages, 4 figures
|
Phys. Rev. D 95, 025006 (2017)
|
10.1103/PhysRevD.95.025006
|
DAMTP-2016-26
|
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study, as a model of Lorentz symmetry breaking, the quantisation and
renormalisation of an extension of QED in a flat spacetime where the photons
and electrons propagate differently and do not share the same lightcone. We
will refer to this model as Bimetric QED (BIMQED). As a preliminary we discuss
the formulation of electrodynamics in a pre-metric formalism showing
nevertheless that there is, on the basis of a simple criteron, a preferred
metric. Arising from this choice of metric is a Weyl-like tensor (WLT). The
Petrov classification of the WLT gives rise to a corresponding classification
of Lorentz symmetry breaking. We do not impose any constraint on the strength
of the symmetry breaking and are able to obtain explicit dispersion relations
for photon propagation in each of the Petrov classes. The associated
birefringence appears in some cases as two distinct polarisation dependent
lightcones and in other cases as a a more complicated structure that cannot be
disentangled in a simple way.
We show how in BIMQED the renormalisation procedure can, in addition to its
effect on standard parameters such as charge and mass, force the
renormalisation of the metrics and the WLT. Two particularly tractable cases
are studied in detail for which we can obtain renormalisation group flows for
the parameters of the model together with an analysis of fixed point structure.
Of course these results are consistent with previous studies but we are not
constrained to treat Lorentz symmetry breaking as necessarily weak. As we found
in a previous study of a scalar field theory model an acceptable causal
structure for the model imposes constraints on relationship between the various
lightcones in BIMQED.
|
[{'version': 'v1', 'created': 'Wed, 30 Mar 2016 14:27:47 GMT'}]
|
2017-01-11
|
[array(['Drummond', 'I. T.', ''], dtype=object)]
|
16,654 |
0806.3250
|
Juan Antonio Nieto
|
J. A. Nieto, E. A. Leon
|
Issues of duality in Abelian Gauge Theory and in Linearized Gravity
|
18 pages, Latex, minor changes, references added
|
Rev. Mex. Fis. 55 (2009) 262-269
| null | null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We start by describing two of the main proposals for duality in Abelian gauge
theories, namely $F$(ield strength)-duality approach and the $S$% -duality
formalism. We then discuss how $F$-duality and $S$-duality can be applied to
the case of linearized gravity. By emphasizing the similarities and differences
between these two type of dualities we explore the possibility of combining
them in just one duality formalism.
|
[{'version': 'v1', 'created': 'Thu, 19 Jun 2008 17:38:30 GMT'}
{'version': 'v2', 'created': 'Thu, 2 Oct 2008 15:29:02 GMT'}
{'version': 'v3', 'created': 'Thu, 7 May 2009 16:48:49 GMT'}]
|
2014-05-27
|
[array(['Nieto', 'J. A.', ''], dtype=object)
array(['Leon', 'E. A.', ''], dtype=object)]
|
16,655 |
1910.00224
|
Luigi Garziano
|
Luigi Garziano, Alessandro Ridolfo, Adam Miranowicz, Giuseppe Falci,
Salvatore Savasta, Franco Nori
|
Atoms in separated resonators can jointly absorb a single photon
| null |
Sci. Rep. 10, 21660 (2020) 1-16
|
10.1038/s41598-020-78299-x
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The coherent nonlinear process where a single photon simultaneously excites
two or more two-level systems (qubits) in a single-mode resonator has recently
been theoretically predicted. Here we explore the case where the two qubits are
placed in different resonators in an array of two or three weakly coupled
resonators. Investigating different setups and excitation schemes, we show that
this process can still occur with a probability approaching one under specific
conditions. The obtained results provide interesting insights into subtle
causality issues underlying the simultaneous excitation processes of qubits
placed in different resonators.
|
[{'version': 'v1', 'created': 'Tue, 1 Oct 2019 06:58:22 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Jul 2020 09:53:04 GMT'}
{'version': 'v3', 'created': 'Tue, 23 Mar 2021 12:48:41 GMT'}]
|
2021-03-24
|
[array(['Garziano', 'Luigi', ''], dtype=object)
array(['Ridolfo', 'Alessandro', ''], dtype=object)
array(['Miranowicz', 'Adam', ''], dtype=object)
array(['Falci', 'Giuseppe', ''], dtype=object)
array(['Savasta', 'Salvatore', ''], dtype=object)
array(['Nori', 'Franco', ''], dtype=object)]
|
16,656 |
1011.1333
|
Kazuya Yuasa
|
Mauro Iazzi, Kazuya Yuasa
|
Relevance of Bose-Einstein Condensation to the Interference of Two
Independent Bose Gases
|
13 pages, 2 figures
|
Phys. Rev. A 83, 033611 (2011)
|
10.1103/PhysRevA.83.033611
| null |
cond-mat.quant-gas quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Interference of two independently prepared ideal Bose gases is discussed, on
the basis of the idea of measurement-induced interference: even if the number
of each gas is individually fixed finite and the symmetry of the system is not
broken, an interference pattern is observed on each single snapshot. The key
role is played by the Hanbury Brown and Twiss effect, which leads to an
oscillating pattern of the cloud of identical atoms. Then, how essential is the
Bose-Einstein condensation to the interference? We describe the ideal Bose
gases trapped respectively in two spatially separated 3D harmonic traps at a
finite temperature as canonical ensembles with fixed numbers of atoms, and
compute the full statistics of the snapshot profiles of the expanding and
overlapping gases released from the traps. We obtain a simple formula, which
shows that the average fringe spectrum (average fringe contrast) is given by
the purity of each gas. The purity is known to be a good measure of
condensation, and this result clarifies the relevance of the condensation to
the interference. The fluctuation of the interference spectrum is also studied,
and it is shown that the fluctuation is vanishingly small below the critical
temperature, while it is nonvanishing above. This implies that interference
pattern is certainly observed on every snapshot below the critical temperature.
The fact that the number of atoms is fixed in the canonical ensemble is crucial
to this vanishing fluctuation.
|
[{'version': 'v1', 'created': 'Fri, 5 Nov 2010 07:24:03 GMT'}
{'version': 'v2', 'created': 'Mon, 14 Mar 2011 22:10:05 GMT'}]
|
2011-03-16
|
[array(['Iazzi', 'Mauro', ''], dtype=object)
array(['Yuasa', 'Kazuya', ''], dtype=object)]
|
16,657 |
1511.05063
|
Xiang Liu
|
Xiang Liu and Jingfan Chang and Zheng Wang and Lei Fan
|
Prototype of Readout Electronics for the ED in LHAASO KM2A
|
6 pages, 12 figures
| null | null | null |
physics.ins-det hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The KM2A(one kilometer square extensive air shower array) is the largest
detector array in the LHAA- SO(Large High Altitude Air Shower Observatory)
project. The KM2A consists of 5635 EDs(Electromagnetic particle Detectors) and
1221 MDs(Muon Detectors). The EDs are distributed and exposed in the wild. Two
channels, Anode and Dynode, are employed for the PMT(photomultiplier tube)
signal readout. The readout electronics proposed in this paper aims at the
accurate charge and arrival time measurement of the PMT signals, which cover a
large amplitude range from 20P.E(photoelectrons) to 2x10^5 P.E. By using the
Trigger-less architecture, we digitize signals close to the PMTs. All digitized
data is transmitted to DAQ(Data Acquisition) via the simplified WR(White
Rabbit) protocol. Compared with traditional high energy experiments,
high-precision of time measurement in such a large area and suppression of
temperature effects in the wild become the key techniques. Experiments show
that the design has fulfilled the requirements in this project.
|
[{'version': 'v1', 'created': 'Thu, 12 Nov 2015 08:39:28 GMT'}]
|
2016-10-23
|
[array(['Liu', 'Xiang', ''], dtype=object)
array(['Chang', 'Jingfan', ''], dtype=object)
array(['Wang', 'Zheng', ''], dtype=object)
array(['Fan', 'Lei', ''], dtype=object)]
|
16,658 |
2304.06536
|
Hsian-Hua Tseng
|
Deniz Genlik, Hsian-Hua Tseng
|
On Hilb/Sym correspondence for K3 surfaces
|
9 pages
| null | null | null |
math.AG math.SG
|
http://creativecommons.org/licenses/by/4.0/
|
We derive a crepant resolution correspondence for some genus zero reduced
Gromov-Witten invariants of Hilbert schemes of points on a K3 surface.
|
[{'version': 'v1', 'created': 'Thu, 13 Apr 2023 13:48:17 GMT'}]
|
2023-04-14
|
[array(['Genlik', 'Deniz', ''], dtype=object)
array(['Tseng', 'Hsian-Hua', ''], dtype=object)]
|
16,659 |
1001.1518
|
Boris I. Belevtsev
|
B. I. Belevtsev, N. V. Dalakova, A. S. Panfilov, E. Yu. Beliayev
|
Anomalies of conductivity behavior near the
paramagnetic-antiferromagnetic transition in single-crystals
La_{2}CuO_{4+\delta}
|
11 pages, 6 figures, submitted to Physica B
|
Physica B 405 (2010) 1307-1311
|
10.1016/j.physb.2009.11.074
| null |
cond-mat.mtrl-sci cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The temperature dependences of resistance, R(T), of two single-crystals
La_{2}CuO_{4+\delta} samples have been studied with the aim to detect a
possible change in the R(T) behavior induced by paramagnetic-antiferromagnetic
(PM-AFM) transition. One of the samples with \delta \lesssim 0.01, was fairly
homogeneous in oxygen distribution (not phase-separated) with Neel temperature
T_{N}\approx 266 K. Conductivity of this sample has been determined by Mott's
variable-range hopping below T_N. The other, far less resistive, sample with
\delta \approx 0.05, was inhomogeneous (phase-separated) showing both PM-AFM
(T_N\approx 205 K) and superconducting (T_c\approx 25 K) transitions. It is
found that for the homogeneous sample the resistivity decreases above T_N far
faster with temperature than below it (for both directions of measuring
current, parallel and perpendicular to basal CuO_2 planes). A similar behavior
of conductivity near PM-AFM transition is also found for the phase-separated
and less resistive sample. In this case a clear kink in R(T) curve near
T_N\approx 205 K can be seen. Furthermore, a transition to metallic (dR/dT>0)
behavior occurs far enough above T_N. The observed behavior of the samples
studied is related to increased delocalization of charge carriers above T_N.
This is in accordance with decrease in the AFM correlation length and
corresponding enhancement of the hole mobility above T_N known for low-doped
lanthanum cuprates.
|
[{'version': 'v1', 'created': 'Sun, 10 Jan 2010 14:04:41 GMT'}]
|
2010-01-29
|
[array(['Belevtsev', 'B. I.', ''], dtype=object)
array(['Dalakova', 'N. V.', ''], dtype=object)
array(['Panfilov', 'A. S.', ''], dtype=object)
array(['Beliayev', 'E. Yu.', ''], dtype=object)]
|
16,660 |
1512.07509
|
Christoph Rauch
|
C. Rauch, E. Ros, T. P. Krichbaum, A. Eckart, J. A. Zensus, B.
Shahzamanian and K. Muzic
|
Wisps in the Galactic center: NIR triggered observations of the radio
source Sgr A* at 43 GHz
| null |
A&A 587, A37 (2016)
|
10.1051/0004-6361/201527286
| null |
astro-ph.GA astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Context. The compact radio and near-infrared (NIR) source Sagittarius A* (Sgr
A*) associated with the supermassive black hole in the Galactic center was
observed at 7 mm in the context of a NIR triggered global Very Long Baseline
Array (VLBA) campaign. Aims. Sgr A* shows variable flux densities ranging from
radio through X-rays. These variations sometimes appear in spontaneous
outbursts that are referred to as flares. Multi-frequency observations of Sgr
A* provide access to easily observable parameters that can test the currently
accepted models that try to explain these intensity outbursts. Methods. On May
16-18, 2012 Sgr A* has been observed with the VLBA at 7 mm (43 GHz) for 6 hours
each day during a global multi-wavelength campaign. These observations were
triggered by a NIR flare observed at the Very Large Telescope (VLT). Accurate
flux densities and source morphologies were acquired. Results. The total 7 mm
flux of Sgr A* shows only minor variations during its quiescent states on a
daily basis of 0.06 Jy. An observed NIR flare on May 17 was followed 4.5 hours
later by an increase in flux density of 0.22 Jy at 43 GHz. This agrees well
with the expected time delay of events that are casually connected by adiabatic
expansion. Shortly before the peak of the radio flare, Sgr A* developed a
secondary radio off-core feature at 1.5 mas toward the southeast. Even though
the closure phases are too noisy to place actual constraints on this feature, a
component at this scale together with a time delay of 4.5 +- 0.5 hours between
the NIR and radio flare provide evidence for an adiabatically expanding jet
feature.
|
[{'version': 'v1', 'created': 'Wed, 23 Dec 2015 15:09:15 GMT'}
{'version': 'v2', 'created': 'Mon, 28 Dec 2015 09:53:56 GMT'}]
|
2016-02-17
|
[array(['Rauch', 'C.', ''], dtype=object)
array(['Ros', 'E.', ''], dtype=object)
array(['Krichbaum', 'T. P.', ''], dtype=object)
array(['Eckart', 'A.', ''], dtype=object)
array(['Zensus', 'J. A.', ''], dtype=object)
array(['Shahzamanian', 'B.', ''], dtype=object)
array(['Muzic', 'K.', ''], dtype=object)]
|
16,661 |
1810.02030
|
Chao Gao
|
Chao Gao, Jiyi Liu, Yuan Yao, Weizhi Zhu
|
Robust Estimation and Generative Adversarial Nets
| null | null | null | null |
stat.ML cs.LG math.ST stat.CO stat.ME stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Robust estimation under Huber's $\epsilon$-contamination model has become an
important topic in statistics and theoretical computer science. Statistically
optimal procedures such as Tukey's median and other estimators based on depth
functions are impractical because of their computational intractability. In
this paper, we establish an intriguing connection between $f$-GANs and various
depth functions through the lens of $f$-Learning. Similar to the derivation of
$f$-GANs, we show that these depth functions that lead to statistically optimal
robust estimators can all be viewed as variational lower bounds of the total
variation distance in the framework of $f$-Learning. This connection opens the
door of computing robust estimators using tools developed for training GANs. In
particular, we show in both theory and experiments that some appropriate
structures of discriminator networks with hidden layers in GANs lead to
statistically optimal robust location estimators for both Gaussian distribution
and general elliptical distributions where first moment may not exist.
|
[{'version': 'v1', 'created': 'Thu, 4 Oct 2018 02:37:16 GMT'}
{'version': 'v2', 'created': 'Sun, 7 Oct 2018 01:47:46 GMT'}
{'version': 'v3', 'created': 'Mon, 25 Feb 2019 20:09:43 GMT'}]
|
2019-02-27
|
[array(['Gao', 'Chao', ''], dtype=object)
array(['Liu', 'Jiyi', ''], dtype=object)
array(['Yao', 'Yuan', ''], dtype=object)
array(['Zhu', 'Weizhi', ''], dtype=object)]
|
16,662 |
1103.3860
|
Andrzej Kup\'s\'c Dr
|
Andrzej Kupsc and Andreas Wirzba
|
Tests of the fundamental symmetries in eta meson decays
|
9 pages, 2 figures, proceedings of Symposium on Prospects in the
Physics of Discrete Symmetries, DISCRETE 2010, 6 - 11 December, Rome; v2:
added references
|
J. Phys. Conf. Ser. 335, 012017 (2011)
|
10.1088/1742-6596/335/1/012017
|
FZJ-IKP-TH-2011-3
|
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Patterns of chiral symmetry violation and tests of the conservation of the
fundamental C, P and CP symmetries are key physics issues in studies of the
pi0, eta and eta' meson decays. These tests include searches for rare or
forbidden decays and searches for asymmetries among the decay products in the
not-so-rare decays. Some examples for the rare decays are eta-->2pi, eta-->4pi0
(CP tests), decays into an odd number of photons (e.g., eta-->3g) and the decay
eta-->pi0e+e- (C tests). The experimental studies of the pi0, eta and eta'
meson decays are carried out at four European accelerator research facilities:
KLOE/KLOE-2 at DAFNE (Frascati), Crystal Ball at MAMI (Mainz), WASA at COSY
(J\"ulich), Crystal Barrel at ELSA (Bonn).
|
[{'version': 'v1', 'created': 'Sun, 20 Mar 2011 16:23:17 GMT'}
{'version': 'v2', 'created': 'Thu, 28 Apr 2011 14:31:47 GMT'}]
|
2011-12-30
|
[array(['Kupsc', 'Andrzej', ''], dtype=object)
array(['Wirzba', 'Andreas', ''], dtype=object)]
|
16,663 |
2203.03317
|
Fang Xianze
|
Xianze Fang, Yunkai Wang, Zexi Chen, Yue Wang, Rong Xiong
|
Depth-Independent Depth Completion via Least Square Estimation
| null | null | null | null |
cs.CV cs.RO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The depth completion task aims to complete a per-pixel dense depth map from a
sparse depth map. In this paper, we propose an efficient least square based
depth-independent method to complete the sparse depth map utilizing the RGB
image and the sparse depth map in two independent stages. In this way can we
decouple the neural network and the sparse depth input, so that when some
features of the sparse depth map change, such as the sparsity, our method can
still produce a promising result. Moreover, due to the positional encoding and
linear procession in our pipeline, we can easily produce a super-resolution
dense depth map of high quality. We also test the generalization of our method
on different datasets compared to some state-of-the-art algorithms. Experiments
on the benchmark show that our method produces competitive performance.
|
[{'version': 'v1', 'created': 'Mon, 7 Mar 2022 11:52:57 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Jun 2022 06:24:06 GMT'}]
|
2022-06-07
|
[array(['Fang', 'Xianze', ''], dtype=object)
array(['Wang', 'Yunkai', ''], dtype=object)
array(['Chen', 'Zexi', ''], dtype=object)
array(['Wang', 'Yue', ''], dtype=object)
array(['Xiong', 'Rong', ''], dtype=object)]
|
16,664 |
1602.06711
|
Geraint Pratten
|
Geraint Pratten, Dipak Munshi, Patrick Valageas, Philippe Brax
|
3D Weak Lensing: Modified Theories of Gravity
|
25 pages. 10 Figures. 4 Tables. Submitted to PRD
|
Phys. Rev. D 93, 103524 (2016)
|
10.1103/PhysRevD.93.103524
| null |
astro-ph.CO gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Weak lensing (WL) promises to be a particularly sensitive probe of both the
growth of large scale structure (LSS) as well as the fundamental relation
between matter density perturbations and metric perturbations, thus providing a
powerful tool with which we may constrain modified theories of gravity (MG) on
cosmological scales. Future deep, wide-field WL surveys will provide an
unprecedented opportunity to constrain deviations from General Relativity (GR).
Employing a three-dimensional (3D) analysis based on the spherical
Fourier-Bessel (sFB) expansion, we investigate the extent to which MG theories
will be constrained by a typical 3D WL survey configuration including noise
from the intrinsic ellipticity distribution $\sigma_{\epsilon}$ of source
galaxies. Here we focus on two classes of screened theories of gravity: i)
$f(R)$ chameleon models and ii) environmentally dependent dilaton models. We
use one-loop perturbation theory combined with halo models in order to
accurately model the evolution of matter power-spectrum with redshift in these
theories. Using a Fisher information matrix based approach, we show that for an
all-sky spectroscopic survey, the parameter $f_{R_0}$ can be constrained in the
range $f_{R_0}< 5\times 10^{-6}(9\times 10^{-6})$ for $n=1(2)$ with a 3$\sigma$
confidence level. This can be achieved by using relatively low order angular
harmonics $\ell<100$. Including higher order harmonics $\ell>100$ can further
tighten the constraints, making them comparable to current solar-system
constraints. We also employ a Principal Component Analysis (PCA) in order to
study the parameter degeneracies in the MG parameters. Our results can
trivially be extended to other MG theories, such as the K-mouflage models. The
confusion from intrinsic ellipticity correlation and modification of the matter
power-spectrum at small scale due to feedback mechanisms is briefly discussed.
|
[{'version': 'v1', 'created': 'Mon, 22 Feb 2016 10:33:19 GMT'}]
|
2016-05-25
|
[array(['Pratten', 'Geraint', ''], dtype=object)
array(['Munshi', 'Dipak', ''], dtype=object)
array(['Valageas', 'Patrick', ''], dtype=object)
array(['Brax', 'Philippe', ''], dtype=object)]
|
16,665 |
1212.2414
|
Maher Salem
|
Maher Salem and Ulrich Buehler
|
Mining Techniques in Network Security to Enhance Intrusion Detection
Systems
|
16 pages, 7 figures
|
ISSN: 0975-2307 , e-ISSN: 0974-9330, 2012
|
10.5121/ijnsa
| null |
cs.CR cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In intrusion detection systems, classifiers still suffer from several
drawbacks such as data dimensionality and dominance, different network feature
types, and data impact on the classification. In this paper two significant
enhancements are presented to solve these drawbacks. The first enhancement is
an improved feature selection using sequential backward search and information
gain. This, in turn, extracts valuable features that enhance positively the
detection rate and reduce the false positive rate. The second enhancement is
transferring nominal network features to numeric ones by exploiting the
discrete random variable and the probability mass function to solve the problem
of different feature types, the problem of data dominance, and data impact on
the classification. The latter is combined to known normalization methods to
achieve a significant hybrid normalization approach. Finally, an intensive and
comparative study approves the efficiency of these enhancements and shows
better performance comparing to other proposed methods.
|
[{'version': 'v1', 'created': 'Tue, 11 Dec 2012 13:14:42 GMT'}]
|
2012-12-12
|
[array(['Salem', 'Maher', ''], dtype=object)
array(['Buehler', 'Ulrich', ''], dtype=object)]
|
16,666 |
cs/0605081
|
Marc Daumas
|
Marc Daumas (LP2A, LIRMM), Guillaume Da Gra\c{c}a (LP2A), David Defour
(LP2A)
|
Caract\'{e}ristiques arithm\'{e}tiques des processeurs graphiques
| null | null | null | null |
cs.MS
| null |
Les unit\'{e}s graphiques (Graphic Processing Units- GPU) sont d\'{e}sormais
des processeurs puissants et flexibles. Les derni\`{e}res g\'{e}n\'{e}rations
de GPU contiennent des unit\'{e}s programmables de traitement des sommets
(vertex shader) et des pixels (pixel shader) supportant des op\'{e}rations en
virgule flottante sur 8, 16 ou 32 bits. La repr\'{e}sentation flottante sur 32
bits correspond \`{a} la simple pr\'{e}cision de la norme IEEE sur
l'arithm\'{e}tique en virgule flottante (IEEE-754). Les GPU sont bien
adapt\'{e}s aux applications avec un fort parall\'{e}lisme de donn\'{e}es.
Cependant ils ne sont que peu utilis\'{e}s en dehors des calculs graphiques
(General Purpose computation on GPU -- GPGPU). Une des raisons de cet \'{e}tat
de faits est la pauvret\'{e} des documentations techniques fournies par les
fabricants (ATI et Nvidia), particuli\`{e}rement en ce qui concerne
l'implantation des diff\'{e}rents op\'{e}rateurs arithm\'{e}tiques
embarqu\'{e}s dans les diff\'{e}rentes unit\'{e}s de traitement. Or ces
informations sont essentielles pour estimer et contr\^{o}ler les erreurs
d'arrondi ou pour mettre en oeuvre des techniques de r\'{e}duction ou de
compensation afin de travailler en pr\'{e}cision double, quadruple ou
arbitrairement \'{e}tendue. Nous proposons dans cet article un ensemble de
programmes qui permettent de d\'{e}couvrir les caract\'{e}ristiques principales
des GPU en ce qui concerne l'arithm\'{e}tique \`{a} virgule flottante. Nous
donnons les r\'{e}sultats obtenus sur deux cartes graphiques r\'{e}centes: la
Nvidia 7800GTX et l'ATI RX1800XL.
|
[{'version': 'v1', 'created': 'Thu, 18 May 2006 15:49:04 GMT'}]
|
2007-05-23
|
[array(['Daumas', 'Marc', '', 'LP2A, LIRMM'], dtype=object)
array(['Da Graça', 'Guillaume', '', 'LP2A'], dtype=object)
array(['Defour', 'David', '', 'LP2A'], dtype=object)]
|
16,667 |
2212.09883
|
Ismael Akray
|
Sarbast A. Anjuman and Ismael Akray
|
n-absorbing I-primary ideals in commutative rings
| null | null | null | null |
math.AC
|
http://creativecommons.org/licenses/by/4.0/
|
We define a new generalization of n-absorbing ideals in commutative rings
called n-absorbing I-primary ideals. We investigate some characterizations and
properties of such new generalization. If P is an n-absorbing I-primary ideal
of R and $\sqrt{IP} =I \sqrt{P} $, then $\sqrt{P}$ is a n-absorbing I-primary
ideal of R. Also, if $\sqrt{P}$ is an (n-1)-absorbing ideal of R such that
$\sqrt{I \sqrt{P}} \subseteq IP$, then P is an n-absorbing I-primary ideal of
R.
|
[{'version': 'v1', 'created': 'Mon, 19 Dec 2022 22:05:45 GMT'}]
|
2022-12-21
|
[array(['Anjuman', 'Sarbast A.', ''], dtype=object)
array(['Akray', 'Ismael', ''], dtype=object)]
|
16,668 |
hep-th/0003012
|
Pei-Ming Ho
|
Pei-Ming Ho
|
Twisted Bundle on Noncommutative Space and U(1) Instanton
|
Lecture at APCTP-KIAS winter school on Strings and D-branes 2000.
some mistakes corrected
| null | null | null |
hep-th
| null |
We study the notion of twisted bundles on noncommutative space. Due to the
existence of projective operators in the algebra of functions on the
noncommutative space, there are twisted bundles with non-constant dimension.
The U(1) instanton solution of Nekrasov and Schwarz is such an example. As a
mathematical motivation for not excluding such bundles, we find gauge
transformations by which a bundle with constant dimension can be equivalent to
a bundle with non-constant dimension.
|
[{'version': 'v1', 'created': 'Thu, 2 Mar 2000 01:51:47 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Mar 2000 06:43:13 GMT'}]
|
2007-05-23
|
[array(['Ho', 'Pei-Ming', ''], dtype=object)]
|
16,669 |
2012.07389
|
Luca Sanguinetti
|
Andrea Pizzo, Thomas Marzetta, Luca Sanguinetti
|
Holographic MIMO Communications Under Spatially-Stationary Scattering
|
5 pages, 3 figures, presented at the Asilomar Conference on Signals,
Systems, and Computers, 2020
| null | null | null |
cs.IT eess.SP math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Holographic MIMO is a spatially-constrained MIMO system with a massive number
of antennas, possibly thought of, in its ultimate form, as a
spatially-continuous electromagnetic aperture. Accurate and tractable channel
modeling is critical to understanding the full potential of this technology.
This paper considers arbitrary spatially-stationary scattering and provides a
4D plane-wave representation in Cartesian coordinates, which captures the
essence of electromagnetic propagation and allows to evaluate the capacity of
Holographic MIMO systems with rectangular volumetric arrays. The developed
framework generalizes the virtual channel representation, which was originally
developed for uniform linear arrays.
|
[{'version': 'v1', 'created': 'Mon, 14 Dec 2020 10:19:40 GMT'}]
|
2020-12-15
|
[array(['Pizzo', 'Andrea', ''], dtype=object)
array(['Marzetta', 'Thomas', ''], dtype=object)
array(['Sanguinetti', 'Luca', ''], dtype=object)]
|
16,670 |
2209.09204
|
Nicole Tay
|
Tom Dyer, Jordan Smith, Gaetan Dissez, Nicole Tay, Qaiser Malik, Tom
Naunton Morgan, Paul Williams, Liliana Garcia-Mondragon, George Pearse, and
Simon Rasalingham
|
Robustness of an Artificial Intelligence Solution for Diagnosis of
Normal Chest X-Rays
| null | null | null | null |
eess.IV cs.AI
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Purpose: Artificial intelligence (AI) solutions for medical diagnosis require
thorough evaluation to demonstrate that performance is maintained for all
patient sub-groups and to ensure that proposed improvements in care will be
delivered equitably. This study evaluates the robustness of an AI solution for
the diagnosis of normal chest X-rays (CXRs) by comparing performance across
multiple patient and environmental subgroups, as well as comparing AI errors
with those made by human experts.
Methods: A total of 4,060 CXRs were sampled to represent a diverse dataset of
NHS patients and care settings. Ground-truth labels were assigned by a
3-radiologist panel. AI performance was evaluated against assigned labels and
sub-groups analysis was conducted against patient age and sex, as well as CXR
view, modality, device manufacturer and hospital site.
Results: The AI solution was able to remove 18.5% of the dataset by
classification as High Confidence Normal (HCN). This was associated with a
negative predictive value (NPV) of 96.0%, compared to 89.1% for diagnosis of
normal scans by radiologists. In all AI false negative (FN) cases, a
radiologist was found to have also made the same error when compared to final
ground-truth labels. Subgroup analysis showed no statistically significant
variations in AI performance, whilst reduced normal classification was observed
in data from some hospital sites.
Conclusion: We show the AI solution could provide meaningful workload savings
by diagnosis of 18.5% of scans as HCN with a superior NPV to human readers. The
AI solution is shown to perform well across patient subgroups and error cases
were shown to be subjective or subtle in nature.
|
[{'version': 'v1', 'created': 'Wed, 31 Aug 2022 09:54:24 GMT'}]
|
2022-09-20
|
[array(['Dyer', 'Tom', ''], dtype=object)
array(['Smith', 'Jordan', ''], dtype=object)
array(['Dissez', 'Gaetan', ''], dtype=object)
array(['Tay', 'Nicole', ''], dtype=object)
array(['Malik', 'Qaiser', ''], dtype=object)
array(['Morgan', 'Tom Naunton', ''], dtype=object)
array(['Williams', 'Paul', ''], dtype=object)
array(['Garcia-Mondragon', 'Liliana', ''], dtype=object)
array(['Pearse', 'George', ''], dtype=object)
array(['Rasalingham', 'Simon', ''], dtype=object)]
|
16,671 |
1807.10498
|
Anurag Singh
|
Anurag Singh
|
Hom complexes of graphs of diameter $1$
|
11 pages, 2 figures
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Given a finite simplicial complex $X$ and a connected graph $T$ of diameter
$1$, in \cite{anton} Dochtermann had conjectured that $\text{Hom}(T,G_{1,X})$
is homotopy equivalent to $X$. Here, $G_{1, X}$ is the reflexive graph obtained
by taking the $1$-skeleton of the first barycentric subdivision of $X$ and
adding a loop at each vertex. This was proved by Dochtermann and Schultz in
\cite{ds12}.
In this article, we give an alternate proof of this result by understanding
the structure of the cells of Hom$(K_n,G_{1,X})$, where $K_n$ is the complete
graph on $n$ vertices. We prove that the neighborhood complex of $G_{1,X}$ is
homotopy equivalent to $X$ and Hom$(K_n,G_{1,X})\simeq $
Hom$(K_{n-1},G_{1,X})$, for each $n\geq 3$.
|
[{'version': 'v1', 'created': 'Fri, 27 Jul 2018 09:00:33 GMT'}
{'version': 'v2', 'created': 'Wed, 15 May 2019 07:58:27 GMT'}]
|
2019-05-16
|
[array(['Singh', 'Anurag', ''], dtype=object)]
|
16,672 |
1608.04432
|
Daniel Brito de Freitas
|
D. B. de Freitas, M. M. F. Nepomuceno, P. R. V. de Moraes Junior, C.
E. F. Lopes, I. C. Le\~ao, M. L. Das Chagas, J. P. Bravo, A. D. Costa, B. L.
Canto Martins, J. R. De Medeiros
|
New Suns in the Cosmos III: multifractal signature analysis
|
13 pages, 8 figures, 1 table. Accepted for publication in The
Astrophysical Journal
| null |
10.3847/0004-637X/831/1/87
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In present paper, we investigate the multifractality signatures in hourly
time series extracted from CoRoT spacecraft database. Our analysis is intended
to highlight the possibility that astrophysical time series can be members of a
particular class of complex and dynamic processes which require several
photometric variability diagnostics to characterize their structural and
topological properties. To achieve this goal, we search for contributions due
to nonlinear temporal correlation and effects caused by heavier tails than the
Gaussian distribution, using a detrending moving average algorithm for
one-dimensional multifractal signals (MFDMA). We observe that the correlation
structure is the main source of multifractality, while heavy-tailed
distribution plays a minor role in generating the multifractal effects. Our
work also reveals that rotation period of stars is inherently scaled by degree
of multifractality. As a result, analyzing the multifractal degree of referred
series, we uncover an evolution of multifractality from shorter to larger
periods.
|
[{'version': 'v1', 'created': 'Mon, 15 Aug 2016 22:59:25 GMT'}]
|
2016-11-09
|
[array(['de Freitas', 'D. B.', ''], dtype=object)
array(['Nepomuceno', 'M. M. F.', ''], dtype=object)
array(['Junior', 'P. R. V. de Moraes', ''], dtype=object)
array(['Lopes', 'C. E. F.', ''], dtype=object)
array(['Leão', 'I. C.', ''], dtype=object)
array(['Chagas', 'M. L. Das', ''], dtype=object)
array(['Bravo', 'J. P.', ''], dtype=object)
array(['Costa', 'A. D.', ''], dtype=object)
array(['Martins', 'B. L. Canto', ''], dtype=object)
array(['De Medeiros', 'J. R.', ''], dtype=object)]
|
16,673 |
hep-th/0504007
|
Stefan Fredenhagen
|
Stefan Fredenhagen, Matthias R. Gaberdiel and Thomas Mettler
|
Charges of twisted branes: the exceptional cases
|
15 pages
|
JHEP 0505 (2005) 058
|
10.1088/1126-6708/2005/05/058
| null |
hep-th
| null |
The charges of the twisted D-branes for the two exceptional cases (SO(8) with
the triality automorphism and E_6 with charge conjugation) are determined. To
this end the corresponding NIM-reps are expressed in terms of the fusion rules
of the invariant subalgebras. As expected the charge groups are found to agree
with those characterising the untwisted branes.
|
[{'version': 'v1', 'created': 'Fri, 1 Apr 2005 10:10:52 GMT'}]
|
2009-11-11
|
[array(['Fredenhagen', 'Stefan', ''], dtype=object)
array(['Gaberdiel', 'Matthias R.', ''], dtype=object)
array(['Mettler', 'Thomas', ''], dtype=object)]
|
16,674 |
1212.6596
|
Toshihiro Hirano
|
Toshihiro Hirano
|
Pseudo best estimator by a separable approximation of spatial covariance
structures
|
28 pages, 3 figures, 7 tables; adding some details
|
Journal of the Japan Statistical Society (2014), Vol.44, 43-71
| null | null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a linear regression model with a spatially correlated error term
on a lattice. When estimating coefficients in the linear regression model, the
generalized least squares estimator (GLSE) is used if the covariance structures
are known. However, the GLSE for large spatial data sets is computationally
expensive, because it involves inverting the covariance matrix of error terms
from each observations. To reduce the computational complexity, we propose a
pseudo best estimator (PBE) using spatial covariance structures approximated by
separable covariance functions. We derive the asymptotic covariance matrix of
the PBE and compare it with those of the least squares estimator (LSE) and the
GLSE through some simulations. Monte Carlo simulations demonstrate that the PBE
using separable covariance functions has superior accuracy to that of the LSE,
which does not contain the information of the spatial covariance structure,
even if the true process has an isotropic Mat\'ern covariance function.
Additionally, our proposed PBE is computationally efficient relative to the
GLSE for large spatial data sets.
|
[{'version': 'v1', 'created': 'Sat, 29 Dec 2012 08:09:37 GMT'}
{'version': 'v2', 'created': 'Mon, 25 Nov 2013 05:57:25 GMT'}
{'version': 'v3', 'created': 'Sun, 15 Jun 2014 16:28:30 GMT'}]
|
2014-10-07
|
[array(['Hirano', 'Toshihiro', ''], dtype=object)]
|
16,675 |
2209.00323
|
Kouki Nakamura
|
Kouki Nakamura, Takahiro Miyoshi, Chiho Nonaka, Hiroyuki R. Takahashi
|
Directed flow in relativistic resistive magneto-hydrodynamic expansion
for symmetric and asymmetric collision systems
|
13 pages, 20 figures
| null |
10.1103/PhysRevC.107.014901
| null |
nucl-th hep-ph nucl-ex
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
We construct a dynamical model for high-energy heavy-ion collision based on
the relativistic resistive magneto-hydrodynamic framework. Using our newly
developed (3+1)-dimensional relativistic resistive magneto-hydrodynamics code,
we investigate magneto-hydrodynamic expansion in symmetric and asymmetric
collision systems as a first application to high-energy heavy-ion collisions.
As a realistic initial condition for electromagnetic fields, we consider the
solutions of the Maxwell equations with the source term of point charged
particles moving in the direction of the beam axis, including finite constant
electrical conductivity of the medium. We evaluate the directed flow in the
symmetric and asymmetric collisions at RHIC energy. We find a significant
effect of finite electrical conductivity on the directed flow in the asymmetric
collision system. We confirm that a certain amount of energy transfer by
dissipation associated with Ohmic conduction occurs in the asymmetric collision
system because of asymmetry of the electric field produced by two different
colliding nuclei. Because this energy transfer makes the pressure gradient of
the medium flatter, the growth of directed flow decreases.
|
[{'version': 'v1', 'created': 'Thu, 1 Sep 2022 09:49:30 GMT'}]
|
2023-01-18
|
[array(['Nakamura', 'Kouki', ''], dtype=object)
array(['Miyoshi', 'Takahiro', ''], dtype=object)
array(['Nonaka', 'Chiho', ''], dtype=object)
array(['Takahashi', 'Hiroyuki R.', ''], dtype=object)]
|
16,676 |
1502.05969
|
Sanjin Beni\'c
|
Sanjin Benic, Igor Mishustin, Chihiro Sasaki
|
An effective model for the QCD phase transitions at finite baryon
density
|
References added, some points further elaborated, main conclusions
unchanged, accepted in Phys Rev D
| null |
10.1103/PhysRevD.91.125034
|
ZTF-EP-15-05
|
hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce an effective quark-meson-nucleon model for the QCD phase
transitions at finite baryon density. The nucleon and the quark degrees of
freedom are described within a unified framework of a chiral linear sigma
model. The deconfinement transition is modeled through a simple modification of
the distribution functions of nucleons and quarks, where an additional
auxiliary field, the bag field, is introduced. The bag field plays a key role
in converting between the nucleon and the quark degrees of freedom. The model
predicts that the chiral and the deconfinement phase transitions are always
separated. Depending on the model parameters, the chiral transition occurs in
the baryon density range of $(1.5-15.5)n_0$, while the deconfinement transition
occurs above $5 n_0$, where $n_0$ is the saturation density.
|
[{'version': 'v1', 'created': 'Fri, 20 Feb 2015 18:48:01 GMT'}
{'version': 'v2', 'created': 'Mon, 29 Jun 2015 04:49:19 GMT'}]
|
2015-06-30
|
[array(['Benic', 'Sanjin', ''], dtype=object)
array(['Mishustin', 'Igor', ''], dtype=object)
array(['Sasaki', 'Chihiro', ''], dtype=object)]
|
16,677 |
2110.09691
|
Wei Chen
|
Matheus S. M. de Sousa, Fujun Liu, Fanyao Qu, Wei Chen
|
Vacancy-Engineered Flat-Band Superconductivity in Holey Graphene
|
7 pages, 6 figures
| null |
10.1103/PhysRevB.105.014511
| null |
cond-mat.mes-hall cond-mat.supr-con
|
http://creativecommons.org/licenses/by/4.0/
|
A bipartite lattice with chiral symmetry is known to host zero energy flat
bands if the numbers of the two sublattices are different. We demonstrate that
this mechanism of producing flat bands can be realized on graphene by
introducing periodic vacancies. Using first-principle calculations, we
elaborate that even though the pristine graphene does not exactly preserve
chiral symmetry, this mechanism applied to holey graphene still produces single
or multiple bands as narrow as ~0.5eV near the Fermi surface throughout the
entire Brillouin zone. Moreover, this mechanism can combine with
vacancy-engineered nonsymmorphic symmetry to produce band structures with
coexisting flat bands and nodal lines. A weak coupling mean-field treatment
suggests the stabilization of superconductivity by these vacancy-engineered
narrow bands. In addition, superconductivity occurs predominantly on the
majority sublattices, with an amplitude that increases with the number of
narrow bands.
|
[{'version': 'v1', 'created': 'Tue, 19 Oct 2021 01:55:17 GMT'}
{'version': 'v2', 'created': 'Wed, 20 Oct 2021 11:44:15 GMT'}]
|
2022-02-02
|
[array(['de Sousa', 'Matheus S. M.', ''], dtype=object)
array(['Liu', 'Fujun', ''], dtype=object)
array(['Qu', 'Fanyao', ''], dtype=object)
array(['Chen', 'Wei', ''], dtype=object)]
|
16,678 |
1509.02048
|
Daniel Guberman
|
D. Guberman, J. Cortina, R. Garc\'ia, J.Herrera, M. Manganaro, A.
Moralejo, J. Rico and M. Will (for the MAGIC collaboration)
|
Using UV-pass filters for bright Moon observations with MAGIC
|
Proceedings of The 34th International Cosmic Ray Conference (ICRC
2015), 8 pages, 3 figures
| null | null | null |
astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes (IACT) that
observe Very High Energy (VHE) gamma ray sources. The PMTs in their cameras are
designed to operate under moonlight, but they are limited to Moon phases below
93% (300 Moon hours per year), as they can get damaged if the amount of light
they receive is too high. As a result, they cannot be used in the three to five
nights around full Moon. We have selected commercial inexpensive UV-pass
filters rejecting light above a wavelength of 420 nm, where the moonlight
intensity is stronger. We mounted them on light-weight frames that can be
easily installed on the telescope cameras. Test observations have been
performed during the last nine months, from which a moonlight transmission of
about 20% and a Cherenkov light transmission of about 45% are estimated. This
allows the observation of sources down to an angular distance of 5 degrees to
the Moon during Full Moon: essentially in the whole sky and all possible
moonlight conditions. Therefore, the duty cycle of MAGIC can be extended by
about 30%, including nights when VHE observations with IACTs are currently not
feasible. Here we evaluate the preliminary performance, in terms of sensitivity
and energy threshold, of the MAGIC telescopes equipped with the UV-pass filters
under different moonlight intensities, as inferred from Crab Nebula
observations and Monte Carlo simulations.
|
[{'version': 'v1', 'created': 'Mon, 7 Sep 2015 13:58:55 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Sep 2015 13:17:10 GMT'}]
|
2019-08-14
|
[array(['Guberman', 'D.', '', 'for the MAGIC collaboration'], dtype=object)
array(['Cortina', 'J.', '', 'for the MAGIC collaboration'], dtype=object)
array(['García', 'R.', '', 'for the MAGIC collaboration'], dtype=object)
array(['Herrera', 'J.', '', 'for the MAGIC collaboration'], dtype=object)
array(['Manganaro', 'M.', '', 'for the MAGIC collaboration'], dtype=object)
array(['Moralejo', 'A.', '', 'for the MAGIC collaboration'], dtype=object)
array(['Rico', 'J.', '', 'for the MAGIC collaboration'], dtype=object)
array(['Will', 'M.', '', 'for the MAGIC collaboration'], dtype=object)]
|
16,679 |
cs/0405056
|
Vladimir Migunov
|
Ilsur T. Safin, Vladimir V. Migunov, Rustem R. Kafiatullov
|
Modular technology of developing of the extensions of a CAD system. The
axonometric piping diagrams. Common and special operations
|
8 pages, 7 figures, in Russian
| null | null | null |
cs.CE cs.DS
| null |
Applying the modular technology of developing of the problem-oriented
extensions of a CAD system to a problem of automation of creating of the
axonometric piping diagrams on an example of the program system TechnoCAD
GlassX is described. The features of realization of common operations,
composition and realization of special operations of a designing of the schemas
of the special technological pipe lines, systems of a water line and water
drain, heating, heat supply, ventilating, air conditioning are reviewed.
|
[{'version': 'v1', 'created': 'Mon, 17 May 2004 10:14:12 GMT'}]
|
2007-05-23
|
[array(['Safin', 'Ilsur T.', ''], dtype=object)
array(['Migunov', 'Vladimir V.', ''], dtype=object)
array(['Kafiatullov', 'Rustem R.', ''], dtype=object)]
|
16,680 |
hep-ph/0111153
|
Ho-Meoyng Choi
|
Chueng-Ryong Ji (North Carolina State U.) and Ho-Meoyng Choi (Carnegie
Mellon U.)
|
Light-Front QCD Hamiltonian Dynamics and Constituent Quark Picture in
Exclusive Processes
|
5pages, Contributed to International Light-Cone Workshop "Light-cone
Physics: Particles and Strings", Trento, Italy, 3-11 Sep. 2001
|
Nucl.Phys.Proc.Suppl. 108 (2002) 288-292
|
10.1016/S0920-5632(02)01346-4
| null |
hep-ph
| null |
After reviewing a connection between quantum chromodynamics and contituent
quark model pictures in the light-front quantization with some comparison and
contrast to the ordinary equal-time bridge a la Bogoliubov-Valatin
transformation, we discuss some newer development of the light-front quark
model phenomenology in exclusive processes including the embedded state. The
skewed parton distribution appears to be a good testing ground for our new
effective treatment of the light-front nonvalence contributions in timelike
exclusive processes.
|
[{'version': 'v1', 'created': 'Tue, 13 Nov 2001 01:51:07 GMT'}]
|
2009-11-07
|
[array(['Ji', 'Chueng-Ryong', '', 'North Carolina State U.'], dtype=object)
array(['Choi', 'Ho-Meoyng', '', 'Carnegie\n Mellon U.'], dtype=object)]
|
16,681 |
1905.05735
|
Hai-Hu Wen
|
Xiaoyu Chen, Mingyang Chen, Wen Duan, Huan Yang, and Hai-Hu Wen
|
Zero-Energy Modes on Superconducting Bismuth Islands Deposited on
Fe(Te,Se)
|
18 pages, 7 figures
|
Nano Lett. 20, 2965 (2020)
|
10.1021/acs.nanolett.9b04639
| null |
cond-mat.supr-con quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Topological superconductivity is one of the frontier research directions in
condensed matter physics. One of the unique elementary excitations in
topological superconducting state is the Majorana fermion (mode) which is its
own antiparticle and obeys the non-Abelian statistics, and thus useful for
constructing the fault-tolerant quantum computing. The evidence for Majorana
fermions (mode) in condensed matter state is now quickly accumulated. Here we
report the easily achievable zero-energy mode on the tunneling spectra on Bi
islands deposited on the Fe(Te,Se) superconducting single crystals. We
interpret this result as the consequence of proximity effect induced
topological superconductivity on the Bi islands with strong spin-orbital
coupling effect. The zero-energy mode is argued to be the signature of the
Majorana modes in this size confined system.
|
[{'version': 'v1', 'created': 'Tue, 14 May 2019 17:29:54 GMT'}]
|
2020-11-25
|
[array(['Chen', 'Xiaoyu', ''], dtype=object)
array(['Chen', 'Mingyang', ''], dtype=object)
array(['Duan', 'Wen', ''], dtype=object)
array(['Yang', 'Huan', ''], dtype=object)
array(['Wen', 'Hai-Hu', ''], dtype=object)]
|
16,682 |
2008.01652
|
Yanhui Guo
|
Yanhui Guo, Xi Zhang, Xiaolin Wu
|
Deep Multi-modality Soft-decoding of Very Low Bit-rate Face Videos
|
Accepted by Proceedings of the 28th ACM International Conference on
Multimedia(ACM MM),2020
|
Proceedings of the 28th ACM International Conference on
Multimedia,2020
|
10.1145/3394171.3413709
| null |
cs.CV cs.MM eess.IV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a novel deep multi-modality neural network for restoring very low
bit rate videos of talking heads. Such video contents are very common in social
media, teleconferencing, distance education, tele-medicine, etc., and often
need to be transmitted with limited bandwidth. The proposed CNN method exploits
the correlations among three modalities, video, audio and emotion state of the
speaker, to remove the video compression artifacts caused by spatial down
sampling and quantization. The deep learning approach turns out to be ideally
suited for the video restoration task, as the complex non-linear cross-modality
correlations are very difficult to model analytically and explicitly. The new
method is a video post processor that can significantly boost the perceptual
quality of aggressively compressed talking head videos, while being fully
compatible with all existing video compression standards.
|
[{'version': 'v1', 'created': 'Sun, 2 Aug 2020 04:38:59 GMT'}]
|
2020-08-05
|
[array(['Guo', 'Yanhui', ''], dtype=object)
array(['Zhang', 'Xi', ''], dtype=object)
array(['Wu', 'Xiaolin', ''], dtype=object)]
|
16,683 |
1906.04290
|
Andreas Schulze
|
A. Schulze, J.D. Silverman, E. Daddi, W. Rujopakarn, D. Liu, M.
Schramm, V. Mainieri, M. Imanishi, M. Hirschmann, K. Jahnke
|
No signs of star formation being regulated in the most luminous quasars
at z~2 with ALMA
|
20 pages, 12 figures, re-submitted to MNRAS
| null |
10.1093/mnras/stz1746
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present ALMA Band~7 observations at $850\mu$m of 20 luminous ($\log\,
L_{\rm bol}>46.9$ [erg s$^{-1}$]) unobscured quasars at $z\sim2$. We detect
continuum emission for 19/20 quasars. After subtracting an AGN contribution, we
measure the total far-IR luminosity for 18 quasars, assuming a modified
blackbody model, and attribute the emission as indicative of the star formation
rate (SFR). Our sample can be characterized with a log-normal SFR distribution
having a mean of 140 $M_\odot$ yr$^{-1}$ and a dispersion of 0.5 dex. Based on
an inference of their stellar masses, the SFRs are similar, in both the mean
and dispersion, with star-forming main-sequence galaxies at the equivalent
epoch. Thus, there is no evidence for a systematic enhancement or suppression
(i.e., regulation or quenching) of star formation in the hosts of the most
luminous quasars at $z\sim2$. These results are consistent with the Magneticum
cosmological simulation, while in disagreement with a widely recognized
phenomenological model that predicts higher SFRs than observed here based on
the high bolometric luminosities of this sample. Furthermore, there is only a
weak relation between SFR and accretion rate onto their supermassive black
holes both for average and individual measurements. We interpret these results
as indicative of star formation and quasar accretion being fed from the
available gas reservoir(s) in their host with a disconnect due to their
different physical sizes, temporal scales, and means of gas processing.
|
[{'version': 'v1', 'created': 'Mon, 10 Jun 2019 21:53:21 GMT'}]
|
2019-07-10
|
[array(['Schulze', 'A.', ''], dtype=object)
array(['Silverman', 'J. D.', ''], dtype=object)
array(['Daddi', 'E.', ''], dtype=object)
array(['Rujopakarn', 'W.', ''], dtype=object)
array(['Liu', 'D.', ''], dtype=object)
array(['Schramm', 'M.', ''], dtype=object)
array(['Mainieri', 'V.', ''], dtype=object)
array(['Imanishi', 'M.', ''], dtype=object)
array(['Hirschmann', 'M.', ''], dtype=object)
array(['Jahnke', 'K.', ''], dtype=object)]
|
16,684 |
2301.12106
|
Alexander Levis
|
Alexander W. Levis, Matteo Bonvini, Zhenghao Zeng, Luke Keele, Edward
H. Kennedy
|
Covariate-assisted bounds on causal effects with instrumental variables
|
40 pages, 2 figures
| null | null | null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
When an exposure of interest is confounded by unmeasured factors, an
instrumental variable (IV) can be used to identify and estimate certain causal
contrasts. Identification of the marginal average treatment effect (ATE) from
IVs relies on strong untestable structural assumptions. When one is unwilling
to assert such structure, IVs can nonetheless be used to construct bounds on
the ATE. Famously, Balke and Pearl (1997) proved tight bounds on the ATE for a
binary outcome, in a randomized trial with noncompliance and no covariate
information. We demonstrate how these bounds remain useful in observational
settings with baseline confounders of the IV, as well as randomized trials with
measured baseline covariates. The resulting bounds on the ATE are non-smooth
functionals, and thus standard nonparametric efficiency theory is not
immediately applicable. To remedy this, we propose (1) under a novel margin
condition, influence function-based estimators of the bounds that can attain
parametric convergence rates when the nuisance functions are modeled flexibly,
and (2) estimators of smooth approximations of these bounds. We propose
extensions to continuous outcomes, explore finite sample properties in
simulations, and illustrate the proposed estimators in a randomized field
experiment studying the effects of canvassing on resulting voter turnout.
|
[{'version': 'v1', 'created': 'Sat, 28 Jan 2023 06:23:33 GMT'}
{'version': 'v2', 'created': 'Thu, 4 May 2023 14:43:57 GMT'}
{'version': 'v3', 'created': 'Tue, 9 May 2023 19:34:46 GMT'}]
|
2023-05-11
|
[array(['Levis', 'Alexander W.', ''], dtype=object)
array(['Bonvini', 'Matteo', ''], dtype=object)
array(['Zeng', 'Zhenghao', ''], dtype=object)
array(['Keele', 'Luke', ''], dtype=object)
array(['Kennedy', 'Edward H.', ''], dtype=object)]
|
16,685 |
1105.2483
|
Xu-Guang Huang
|
Xu-Guang Huang and Tomoi Koide
|
Shear viscosity, Bulk viscosity and Relaxation Times of Causal
Dissipative Relativistic Fluid-Dynamics at Finite Temperature and Chemical
Potential
|
v3:26 pages, 4 figures, published version
|
Nucl. Phys. A889, 73 (2012)
|
10.1016/j.nuclphysa.2012.07.005
| null |
hep-th cond-mat.stat-mech hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The microscopic formulas for the shear viscosity $\eta$, the bulk viscosity
$\zeta$, and the corresponding relaxation times $\tau_\pi$ and $\tau_\Pi$ of
causal dissipative relativistic fluid-dynamics are obtained at finite
temperature and chemical potential by using the projection operator method. The
non-triviality of the finite chemical potential calculation is attributed to
the arbitrariness of the operator definition for the bulk viscous pressure.We
show that, when the operator definition for the bulk viscous pressure $\Pi$ is
appropriately chosen, the leading-order result of the ratio, $\zeta$ over
$\tau_\Pi$, coincides with the same ratio obtained at vanishing chemical
potential. We further discuss the physical meaning of the time-convolutionless
(TCL) approximation to the memory function, which is adopted to derive the main
formulas. We show that the TCL approximation violates the time reversal
symmetry appropriately and leads results consistent with the quantum master
equation obtained by van Hove. Furthermore, this approximation can reproduce an
exact relation for transport coefficients obtained by using the f-sum rule
derived by Kadanoff and Martin. Our approach can reproduce also the result in
Baier et al.(2008) Ref. \cite{con} by taking into account the next-order
correction to the TCL approximation, although this correction causes several
problems.
|
[{'version': 'v1', 'created': 'Thu, 12 May 2011 14:19:29 GMT'}
{'version': 'v2', 'created': 'Tue, 13 Sep 2011 22:05:23 GMT'}
{'version': 'v3', 'created': 'Thu, 9 Aug 2012 17:51:47 GMT'}]
|
2013-05-24
|
[array(['Huang', 'Xu-Guang', ''], dtype=object)
array(['Koide', 'Tomoi', ''], dtype=object)]
|
16,686 |
1705.02300
|
Karl Schwede
|
Linquan Ma, Karl Schwede
|
Perfectoid multiplier/test ideals in regular rings and bounds on
symbolic powers
|
35 pages, numerous clarified proofs and expositional improvements
throughout. To appear in Inventiones Mathematicae
|
Invent. Math. 214 (2018), no. 2, 913-955
|
10.1007/s00222-018-0813-1
| null |
math.AC math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using perfectoid algebras, we introduce a mixed characteristic analog of the
multiplier ideal, respectively test ideal, from characteristic zero,
respectively $p > 0$, in the case of a regular ambient ring. We prove several
properties about this ideal such as subadditivity. We then use these techniques
to derive a uniform bound on the growth of symbolic powers of radical ideals in
all excellent regular rings. The analogous result was shown in equal
characteristic by Ein-Lazarsfeld-Smith and Hochster-Huneke.
|
[{'version': 'v1', 'created': 'Fri, 5 May 2017 17:03:34 GMT'}
{'version': 'v2', 'created': 'Sat, 28 Jul 2018 18:12:16 GMT'}]
|
2019-06-25
|
[array(['Ma', 'Linquan', ''], dtype=object)
array(['Schwede', 'Karl', ''], dtype=object)]
|
16,687 |
1608.02165
|
Vladislav Voroninski
|
Thomas Goldstein, Paul Hand, Choongbum Lee, Vladislav Voroninski,
Stefano Soatto
|
ShapeFit and ShapeKick for Robust, Scalable Structure from Motion
| null | null | null | null |
cs.CV cs.AI math.NA math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a new method for location recovery from pair-wise directions
that leverages an efficient convex program that comes with exact recovery
guarantees, even in the presence of adversarial outliers. When pairwise
directions represent scaled relative positions between pairs of views
(estimated for instance with epipolar geometry) our method can be used for
location recovery, that is the determination of relative pose up to a single
unknown scale. For this task, our method yields performance comparable to the
state-of-the-art with an order of magnitude speed-up. Our proposed numerical
framework is flexible in that it accommodates other approaches to location
recovery and can be used to speed up other methods. These properties are
demonstrated by extensively testing against state-of-the-art methods for
location recovery on 13 large, irregular collections of images of real scenes
in addition to simulated data with ground truth.
|
[{'version': 'v1', 'created': 'Sun, 7 Aug 2016 00:29:53 GMT'}]
|
2016-08-09
|
[array(['Goldstein', 'Thomas', ''], dtype=object)
array(['Hand', 'Paul', ''], dtype=object)
array(['Lee', 'Choongbum', ''], dtype=object)
array(['Voroninski', 'Vladislav', ''], dtype=object)
array(['Soatto', 'Stefano', ''], dtype=object)]
|
16,688 |
quant-ph/9608043
|
Frank Antonsen
|
Frank Antonsen, Karsten Bormann
|
Wormholes and Time-Machines
|
LaTeX, appears in Proceedings Third International A. Friedmann
Seminar, St. Petersburg 1995, Friedmann Laboratory Publishers 1996
| null | null | null |
quant-ph
| null |
It has been proposed that wormholes can be made to function as time-machines.
This opens up the question of whether this can be accomodated within a
self-consistent physics or not. In this contribution we present some quantum
mechanical considerations in this respect.
|
[{'version': 'v1', 'created': 'Wed, 28 Aug 1996 15:40:01 GMT'}]
|
2007-05-23
|
[array(['Antonsen', 'Frank', ''], dtype=object)
array(['Bormann', 'Karsten', ''], dtype=object)]
|
16,689 |
1604.01306
|
Atlas Publications
|
ATLAS Collaboration
|
Search for new phenomena in events with a photon and missing transverse
momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
|
23 pages (+ author list: 40 pages in total), 9 figures, 2 tables.
Submitted to J. High Energy Phys., All figures including auxiliary figures
are available at:
https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2015-05/
|
JHEP06(2016)059
|
10.1007/JHEP06(2016)059
|
CERN-EP-2016-060
|
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Results of a search for new phenomena in events with an energetic photon and
large missing transverse momentum with the ATLAS experiment at the Large Hadron
Collider are reported. The data were collected in proton--proton collisions at
a centre-of-mass energy of 13 TeV and correspond to an integrated luminosity of
3.2 $\rm fb^{-1}$. The observed data are in agreement with the Standard Model
expectations. Exclusion limits are presented in models of new phenomena
including pair production of dark matter candidates or large extra spatial
dimensions. In a simplified model of dark matter and an axial-vector mediator,
the search excludes mediator masses of up to 710 GeV for dark matter candidate
masses up to 150 GeV. In an effective theory of dark matter production, values
of the suppression scale $M_*$ up to 570 GeV are excluded and the effect of
truncation for various coupling values is reported. For the ADD large extra
spatial dimension model the search places more stringent limits than earlier
searches in the same event topology, excluding $M_{\rm D}$ up to about 2.3
(2.8) TeV for two (six) additional spatial dimensions; the limits are reduced
by 20--40% depending on the number of additional spatial dimensions when
applying a truncation procedure.
|
[{'version': 'v1', 'created': 'Tue, 5 Apr 2016 15:48:39 GMT'}
{'version': 'v2', 'created': 'Thu, 16 Jun 2016 16:03:26 GMT'}]
|
2016-06-17
|
[array(['ATLAS Collaboration', '', ''], dtype=object)]
|
16,690 |
2303.15529
|
Maria Axenovich
|
Maria Axenovich, Ryan R. Martin, and Christian Winter
|
On graphs embeddable in a layer of a hypercube and their extremal
numbers
|
The constant in Theorem 2 was misstated in the previous version. It
is corrected
| null | null | null |
math.CO
|
http://creativecommons.org/licenses/by/4.0/
|
A graph is cubical if it is a subgraph of a hypercube. For a cubical graph
$H$ and a hypercube $Q_n$, $ex(Q_n, H)$ is the largest number of edges in an
$H$-free subgraph of $Q_n$. If $ex(Q_n, H)$ is equal to a positive proportion
of the number of edges in $Q_n$, $H$ is said to have positive Tur\'an density
in a hypercube; otherwise it has zero Tur\'an density. Determining $ex(Q_n, H)$
and even identifying whether $H$ has positive or zero Tur\'an density remains a
widely open question for general $H$.
In this paper we focus on layered graphs, i.e., graphs that are contained in
an edge-layer of some hypercube. Graphs $H$ that are not layered have positive
Tur\'an density because one can form an $H$-free subgraph of $Q_n$ consisting
of edges of every other layer. For example, a $4$-cycle is not layered and has
positive Tur\'an density.
However, in general it is not obvious what properties layered graphs have. We
give a characterisation of layered graphs in terms of edge-colorings and show
that any $n$-vertex layered graphs has at most $\frac{1}{4}n \log n (1+o(1))$
edges. We show that most non-trivial subdivisions have zero Tur\'an density,
extending known results on zero Tur\'an density of even cycles of length at
least $12$ and of length $8$. However, we prove that there are cubical graphs
of girth $8$ that are not layered and thus having positive Tur\'an density. The
cycle of length $10$ remains the only cycle for which it is not known whether
its Tur\'an density is positive or not. We prove that $ex(Q_n, C_{10})=
\Omega(n2^n/ \log^a n)$, for a constant $a$, showing that the extremal number
for a $10$-cycle behaves differently from any other cycle of zero Tur\'an
density.
|
[{'version': 'v1', 'created': 'Mon, 27 Mar 2023 18:11:16 GMT'}
{'version': 'v2', 'created': 'Thu, 11 May 2023 18:32:11 GMT'}]
|
2023-05-15
|
[array(['Axenovich', 'Maria', ''], dtype=object)
array(['Martin', 'Ryan R.', ''], dtype=object)
array(['Winter', 'Christian', ''], dtype=object)]
|
16,691 |
1707.01403
|
David Petrecca
|
David Petrecca and Markus Roeser
|
Irreducibility of the Laplacian eigenspaces of some homogeneous spaces
|
Title changed, some inaccurate statements have been corrected and
some arguments have been clarified. 25 pages, 2 tables. Comments are welcome
| null | null | null |
math.DG math.RT math.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For a compact homogeneous space $G/K$, we study the problem of existence of
$G$-invariant Riemannian metrics such that each eigenspace of the Laplacian is
a real irreducible representation of $G$. We prove that the normal metric of a
compact irreducible symmetric space has this property only in rank one.
Furthermore, we provide existence results for such metrics on certain isotropy
reducible spaces.
|
[{'version': 'v1', 'created': 'Wed, 5 Jul 2017 14:06:13 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Oct 2017 11:42:16 GMT'}]
|
2017-10-03
|
[array(['Petrecca', 'David', ''], dtype=object)
array(['Roeser', 'Markus', ''], dtype=object)]
|
16,692 |
hep-ph/9808272
|
Xing Zhi-Zhong
|
Harald Fritzsch, Zhi-zhong Xing
|
Large Leptonic Flavor Mixing and the Mass Spectrum of Leptons
|
Latex 10 pages
|
Phys.Lett. B440 (1998) 313-318
|
10.1016/S0370-2693(98)01106-X
|
LMU-98-08
|
hep-ph hep-ex
| null |
Implications of a simple model for the mass generation of leptons are
studied, in particular for the upcoming long-baseline neutrino experiments. The
flavor mixing angles are large (nearly maximal). The probability for the
long-baseline \nu_\mu \leftrightarrow \nu_e oscillation is predicted to be
about 1%.
|
[{'version': 'v1', 'created': 'Mon, 10 Aug 1998 09:36:22 GMT'}
{'version': 'v2', 'created': 'Tue, 3 Nov 1998 14:13:33 GMT'}]
|
2009-10-31
|
[array(['Fritzsch', 'Harald', ''], dtype=object)
array(['Xing', 'Zhi-zhong', ''], dtype=object)]
|
16,693 |
2101.08829
|
Benjamin Gravell
|
Benjamin Gravell and Tyler Summers
|
Centralized Collision-free Polynomial Trajectories and Goal Assignment
for Aerial Swarms
| null | null | null | null |
cs.RO cs.SY eess.SY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Computationally tractable methods are developed for centralized goal
assignment and planning of collision-free polynomial-in-time trajectories for
systems of multiple aerial robots. The method first assigns robots to goals to
minimize total time-in-motion based on initial trajectories. By coupling the
assignment and trajectory generation, the initial motion plans tend to require
only limited collision resolution. The plans are then refined by checking for
potential collisions and resolving them using either start time delays or
altitude assignment. Numerical experiments using both methods show significant
reductions in the total time required for agents to arrive at goals with only
modest additional computational effort in comparison to state-of-the-art prior
work, enabling planning for thousands of agents.
|
[{'version': 'v1', 'created': 'Thu, 21 Jan 2021 19:57:11 GMT'}]
|
2021-01-25
|
[array(['Gravell', 'Benjamin', ''], dtype=object)
array(['Summers', 'Tyler', ''], dtype=object)]
|
16,694 |
0810.1874
|
Esther Ferrer Ribas
|
CAST Collaboration:E. Arik, S. Aune, D. Autiero, K. Barth, A. Belov,
B. Beltr\'an, S. Borghi, F. S. Boydag, H. Br\"auninger, G. Cantatore, J. M.
Carmona, S. A. Cetin, J. I. Collar, T. Dafni, M. Davenport, L. Di Lella, O.B.
Dogan, C. Eleftheriadis, N. Elias, G. Fanourakis, E. Ferrer-Ribas, H.
Fischer, J. Franz, J. Gal\'an, E. Gazis, T. Geralis, I. Giomataris, S.
Gninenko, H. G\'omez, M. Hasinoff, F. H. Heinsius, I. Hikmet, D. H. H.
Hoffmann, I. G. Irastorza, J. Jacoby, K.Jakov\v{c}i\'c, D. Kang, T.
Karageorgopoulou, M. Karuza, K. K\"onigsmann, R. Kotthaus, M. Kr\v{c}mar, K.
Kousouris, M. Kuster, B. Laki\'c, C. Lasseur, A. Liolios, A. Ljubi\v{c}i\'c,
V. Lozza, G. Lutz, G. Luz\'on, D. Miller, J. Morales, T. Niinikoski, A.
Nordt, A. Ortiz, T. Papaevangelou, M. J. Pivovaroff, A. Placci, G. Raiteri,
G. Raffelt, H. Riege, A. Rodr\'iguez, J. Ruz, I. Savvidis, Y. Semertzidis, P.
Serpico, S. K. Solanki, R. Soufli, L. Stewart, M. Tsagri, K. van Bibber, J5D.
Villar, J. Vogel, L. Walckiers, K. Zioutas
|
Solar axion search with the CAST experiment
|
Proceedings of the ICHEP 2008 conference
| null | null | null |
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The CAST (CERN Axion Solar Telescope) experiment is searching for solar
axions by their conversion into photons inside the magnet pipe of an LHC
dipole. The analysis of the data recorded during the first phase of the
experiment with vacuum in the magnet pipes has resulted in the most restrictive
experimental limit on the coupling constant of axions to photons. In the second
phase, CAST is operating with a buffer gas inside the magnet pipes in order to
extent the sensitivity of the experiment to higher axion masses. We will
present the first results on the $^{4}{\rm He}$ data taking as well as the
system upgrades that have been operated in the last year in order to adapt the
experiment for the $^{3}{\rm He}$ data taking. Expected sensitivities on the
coupling constant of axions to photons will be given for the recent $^{3}{\rm
He}$ run just started in March 2008.
|
[{'version': 'v1', 'created': 'Fri, 10 Oct 2008 12:50:44 GMT'}]
|
2016-08-14
|
[array(['CAST Collaboration', '', ''], dtype=object)
array(['Arik', 'E.', ''], dtype=object)
array(['Aune', 'S.', ''], dtype=object)
array(['Autiero', 'D.', ''], dtype=object)
array(['Barth', 'K.', ''], dtype=object)
array(['Belov', 'A.', ''], dtype=object)
array(['Beltrán', 'B.', ''], dtype=object)
array(['Borghi', 'S.', ''], dtype=object)
array(['Boydag', 'F. S.', ''], dtype=object)
array(['Bräuninger', 'H.', ''], dtype=object)
array(['Cantatore', 'G.', ''], dtype=object)
array(['Carmona', 'J. M.', ''], dtype=object)
array(['Cetin', 'S. A.', ''], dtype=object)
array(['Collar', 'J. I.', ''], dtype=object)
array(['Dafni', 'T.', ''], dtype=object)
array(['Davenport', 'M.', ''], dtype=object)
array(['Di Lella', 'L.', ''], dtype=object)
array(['Dogan', 'O. B.', ''], dtype=object)
array(['Eleftheriadis', 'C.', ''], dtype=object)
array(['Elias', 'N.', ''], dtype=object)
array(['Fanourakis', 'G.', ''], dtype=object)
array(['Ferrer-Ribas', 'E.', ''], dtype=object)
array(['Fischer', 'H.', ''], dtype=object)
array(['Franz', 'J.', ''], dtype=object)
array(['Galán', 'J.', ''], dtype=object)
array(['Gazis', 'E.', ''], dtype=object)
array(['Geralis', 'T.', ''], dtype=object)
array(['Giomataris', 'I.', ''], dtype=object)
array(['Gninenko', 'S.', ''], dtype=object)
array(['Gómez', 'H.', ''], dtype=object)
array(['Hasinoff', 'M.', ''], dtype=object)
array(['Heinsius', 'F. H.', ''], dtype=object)
array(['Hikmet', 'I.', ''], dtype=object)
array(['Hoffmann', 'D. H. H.', ''], dtype=object)
array(['Irastorza', 'I. G.', ''], dtype=object)
array(['Jacoby', 'J.', ''], dtype=object)
array(['Jakovčić', 'K.', ''], dtype=object)
array(['Kang', 'D.', ''], dtype=object)
array(['Karageorgopoulou', 'T.', ''], dtype=object)
array(['Karuza', 'M.', ''], dtype=object)
array(['Königsmann', 'K.', ''], dtype=object)
array(['Kotthaus', 'R.', ''], dtype=object)
array(['Krčmar', 'M.', ''], dtype=object)
array(['Kousouris', 'K.', ''], dtype=object)
array(['Kuster', 'M.', ''], dtype=object)
array(['Lakić', 'B.', ''], dtype=object)
array(['Lasseur', 'C.', ''], dtype=object)
array(['Liolios', 'A.', ''], dtype=object)
array(['Ljubičić', 'A.', ''], dtype=object)
array(['Lozza', 'V.', ''], dtype=object)
array(['Lutz', 'G.', ''], dtype=object)
array(['Luzón', 'G.', ''], dtype=object)
array(['Miller', 'D.', ''], dtype=object)
array(['Morales', 'J.', ''], dtype=object)
array(['Niinikoski', 'T.', ''], dtype=object)
array(['Nordt', 'A.', ''], dtype=object)
array(['Ortiz', 'A.', ''], dtype=object)
array(['Papaevangelou', 'T.', ''], dtype=object)
array(['Pivovaroff', 'M. J.', ''], dtype=object)
array(['Placci', 'A.', ''], dtype=object)
array(['Raiteri', 'G.', ''], dtype=object)
array(['Raffelt', 'G.', ''], dtype=object)
array(['Riege', 'H.', ''], dtype=object)
array(['Rodríguez', 'A.', ''], dtype=object)
array(['Ruz', 'J.', ''], dtype=object)
array(['Savvidis', 'I.', ''], dtype=object)
array(['Semertzidis', 'Y.', ''], dtype=object)
array(['Serpico', 'P.', ''], dtype=object)
array(['Solanki', 'S. K.', ''], dtype=object)
array(['Soufli', 'R.', ''], dtype=object)
array(['Stewart', 'L.', ''], dtype=object)
array(['Tsagri', 'M.', ''], dtype=object)
array(['van Bibber', 'K.', ''], dtype=object)
array(['Villar', 'J5D.', ''], dtype=object)
array(['Vogel', 'J.', ''], dtype=object)
array(['Walckiers', 'L.', ''], dtype=object)
array(['Zioutas', 'K.', ''], dtype=object)]
|
16,695 |
hep-th/9310076
|
Katsushi Ito
|
Katsushi Ito and Hiroaki Kanno
|
Hamiltonian Reduction and Topological Conformal Algebra in $c\leq 1$
Non-critical Strings
|
13 pages Latex, UTHEP-264
|
Mod.Phys.Lett. A9 (1994) 1377-1388
|
10.1142/S0217732394001209
| null |
hep-th
| null |
We study the hamiltonian reduction of affine Lie superalgebra
$sl(2|1)^{(1)}$. Based on a scalar Lax operator formalism, we derive the free
field realization of the classical topological topological algebra which
appears in the $c\leq1$ non-critical strings. In the quantum case, we analyze
the BRST cohomology to get the quantum free field expression of the algebra.
|
[{'version': 'v1', 'created': 'Thu, 14 Oct 1993 01:49:37 GMT'}]
|
2015-06-26
|
[array(['Ito', 'Katsushi', ''], dtype=object)
array(['Kanno', 'Hiroaki', ''], dtype=object)]
|
16,696 |
2107.06869
|
Kyeongbo Kong
|
Jae-hun Shim, Kyeongbo Kong, and Suk-Ju Kang
|
Core-set Sampling for Efficient Neural Architecture Search
|
8 pages, 2 figures, spotlight presented at the ICML 2021 Workshop on
Subset Selection in ML
| null | null | null |
cs.LG cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Neural architecture search (NAS), an important branch of automatic machine
learning, has become an effective approach to automate the design of deep
learning models. However, the major issue in NAS is how to reduce the large
search time imposed by the heavy computational burden. While most recent
approaches focus on pruning redundant sets or developing new search
methodologies, this paper attempts to formulate the problem based on the data
curation manner. Our key strategy is to search the architecture using
summarized data distribution, i.e., core-set. Typically, many NAS algorithms
separate searching and training stages, and the proposed core-set methodology
is only used in search stage, thus their performance degradation can be
minimized. In our experiments, we were able to save overall computational time
from 30.8 hours to 3.5 hours, 8.8x reduction, on a single RTX 3090 GPU without
sacrificing accuracy.
|
[{'version': 'v1', 'created': 'Thu, 8 Jul 2021 06:19:18 GMT'}]
|
2021-07-15
|
[array(['Shim', 'Jae-hun', ''], dtype=object)
array(['Kong', 'Kyeongbo', ''], dtype=object)
array(['Kang', 'Suk-Ju', ''], dtype=object)]
|
16,697 |
1202.4504
|
Yuval Rabani
|
Noa Avigdor-Elgrabli and Yuval Rabani
|
A Constant Factor Approximation Algorithm for Reordering Buffer
Management
| null | null | null | null |
cs.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the reordering buffer management problem (RBM) a sequence of $n$ colored
items enters a buffer with limited capacity $k$. When the buffer is full, one
item is removed to the output sequence, making room for the next input item.
This step is repeated until the input sequence is exhausted and the buffer is
empty. The objective is to find a sequence of removals that minimizes the total
number of color changes in the output sequence. The problem formalizes numerous
applications in computer and production systems, and is known to be NP-hard.
We give the first constant factor approximation guarantee for RBM. Our
algorithm is based on an intricate "rounding" of the solution to an LP
relaxation for RBM, so it also establishes a constant upper bound on the
integrality gap of this relaxation. Our results improve upon the best previous
bound of $O(\sqrt{\log k})$ of Adamaszek et al. (STOC 2011) that used different
methods and gave an online algorithm. Our constant factor approximation beats
the super-constant lower bounds on the competitive ratio given by Adamaszek et
al. This is the first demonstration of an offline algorithm for RBM that is
provably better than any online algorithm.
|
[{'version': 'v1', 'created': 'Tue, 21 Feb 2012 01:28:05 GMT'}]
|
2012-02-22
|
[array(['Avigdor-Elgrabli', 'Noa', ''], dtype=object)
array(['Rabani', 'Yuval', ''], dtype=object)]
|
16,698 |
2004.09904
|
Dirk Zeindler
|
Volker Betz and Julian M\"uhlbauer and Helge Sch\"afer and Dirk
Zeindler
|
Precise asymptotics of longest cycles in random permutations without
macroscopic cycles
| null | null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider Ewens random permutations of length $n$ conditioned to have no
cycle longer than $n^\beta$ with $0<\beta<1$ and to study the asymptotic
behaviour as $n\to\infty$. We obtain very precise information on the joint
distribution of the lengths of the longest cycles; in particular we prove a
functional limit theorem where the cumulative number of long cycles converges
to a Poisson process in the suitable scaling. Furthermore, we prove convergence
of the total variation distance between joint cycle counts and suitable
independent Poisson random variables up to a significantly larger maximal cycle
length than previously known. Finally, we remove a superfluous assumption from
a central limit theorem for the total number of cycles proved in an earlier
paper.
|
[{'version': 'v1', 'created': 'Tue, 21 Apr 2020 11:10:24 GMT'}]
|
2020-04-22
|
[array(['Betz', 'Volker', ''], dtype=object)
array(['Mühlbauer', 'Julian', ''], dtype=object)
array(['Schäfer', 'Helge', ''], dtype=object)
array(['Zeindler', 'Dirk', ''], dtype=object)]
|
16,699 |
1412.5412
|
Wei Guo
|
Wei Guo, Jian Ma, Xiaolei Yin, Wei Zhong, and Xiaoguang Wang
|
Non-Markovian dynamics of mixed-state geometric phase of dissipative
qubits
|
9 pages, 6 figures
| null |
10.1103/PhysRevA.90.062133
| null |
quant-ph
|
http://creativecommons.org/licenses/by-nc-sa/3.0/
|
We investigate the geometric phase of a two-level atom (qubit) coupled to a
bosonic reservoir with Lorentzian spectral density, and find that for the
non-Markovian dynamics in which rotating-wave approximation (RWA) is performed,
geometric phase has a $\pi$-phase jump at the nodal point. However, the exact
result without RWA given by hierarchy equation of motion method shows that
there is no such a phase jump or nodal structure in geometric phase. Thus our
results demonstrate that the counter-rotating terms significantly contribute to
the geometric phase in multi-mode Hamiltonian under certain circumstances.
|
[{'version': 'v1', 'created': 'Wed, 17 Dec 2014 14:53:53 GMT'}]
|
2015-06-23
|
[array(['Guo', 'Wei', ''], dtype=object)
array(['Ma', 'Jian', ''], dtype=object)
array(['Yin', 'Xiaolei', ''], dtype=object)
array(['Zhong', 'Wei', ''], dtype=object)
array(['Wang', 'Xiaoguang', ''], dtype=object)]
|
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