Unnamed: 0
int64 0
20k
| id
stringlengths 9
16
| submitter
stringlengths 1
50
⌀ | authors
stringlengths 5
15.2k
| title
stringlengths 7
294
| comments
stringlengths 1
682
⌀ | journal-ref
stringlengths 4
256
⌀ | doi
stringlengths 13
133
⌀ | report-no
stringlengths 2
187
⌀ | categories
stringlengths 5
90
| license
stringclasses 9
values | abstract
stringlengths 21
2.62k
| versions
stringlengths 62
2.35k
| update_date
stringlengths 10
10
| authors_parsed
stringlengths 39
44.4k
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5,300 |
1203.4845
|
Matthew Zaremsky
|
Matthew C. B. Zaremsky
|
Rational homological stability for groups of partially symmetric
automorphisms of free groups
|
v2: Updated to reflect changes made to arxiv:0907.4642. v3:
Significant simplification of Section 4.3 and Lemma 5.2. v4: Reorganized
paper, most notably switched order of sections 4 and 5, and generally
improved formatting/readability. Also added more historical background to
introduction. Results and methods unchanged. 20 pages, 7 figures
|
Algebr. Geom. Topol. 14 (2014) 1845-1879
|
10.2140/agt.2014.14.1845
| null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let F_{n+m} be the free group of rank n+m, with generators x_1,...,x_{n+m}.
An automorphism \phi of F_{n+m} is called partially symmetric if for each 1 \le
i \le m, \phi(x_i) is conjugate to x_j or x_j^{-1} for some 1 \le j \le m. Let
\Sigma\Aut_n^m be the group of partially symmetric automorphisms. We prove that
for any m \ge 0 the inclusion \Sigma\Aut_n^m \to \Sigma\Aut_{n+1}^m induces an
isomorphism in rational homology for dimensions i satisfying n \ge
(3(i+1)+m)/2, with a similar statement for the groups P\Sigma\Aut_n^m of pure
partially symmetric automorphisms. We also prove that for any n \ge 0 the
inclusion \Sigma\Aut_n^m \to \Sigma\Aut_n^{m+1} induces an isomorphism in
rational homology for dimensions i satisfying m > (3i-1)/2.
|
[{'version': 'v1', 'created': 'Wed, 21 Mar 2012 21:39:58 GMT'}
{'version': 'v2', 'created': 'Thu, 24 May 2012 14:35:31 GMT'}
{'version': 'v3', 'created': 'Fri, 31 Aug 2012 09:40:27 GMT'}
{'version': 'v4', 'created': 'Wed, 12 Dec 2012 11:10:12 GMT'}]
|
2014-10-01
|
[array(['Zaremsky', 'Matthew C. B.', ''], dtype=object)]
|
5,301 |
1906.03271
|
Holmfridur Hannesdottir
|
Holmfridur Hannesdottir, Matthew D. Schwartz
|
A Finite $S$-Matrix
|
5 pages, 5 figures
| null |
10.1103/PhysRevD.107.L021701
| null |
hep-th hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
When massless particles are involved, the traditional scattering matrix
($S$-matrix) does not exist: it has no rigorous non-perturbative definition and
has infrared divergences in its perturbative expansion. The problem can be
traced to the impossibility of isolating single-particle states at asymptotic
times. On the other hand, the troublesome non-separable interactions are often
universal: in gauge theories they factorize so that the asymptotic evolution is
independent of the hard scattering. Exploiting this factorization property, we
show how a finite "hard" $S$-matrix, $S_H$, can be defined by replacing the
free Hamiltonian with a soft-collinear asymptotic Hamiltonian. The elements of
$S_H$ are gauge invariant and infrared finite, and exist even in conformal
field theories. One can interpret elements of $S_H$ alternatively 1) as
elements of the traditional $S$-matrix between dressed states, 2) as Wilson
coefficients, or 3) as remainder functions. These multiple interpretations
provide different insights into the rich structure of $S_H$.
|
[{'version': 'v1', 'created': 'Fri, 7 Jun 2019 18:00:02 GMT'}
{'version': 'v2', 'created': 'Tue, 25 Aug 2020 17:11:31 GMT'}]
|
2023-02-01
|
[array(['Hannesdottir', 'Holmfridur', ''], dtype=object)
array(['Schwartz', 'Matthew D.', ''], dtype=object)]
|
5,302 |
2011.12068
|
Emilio Mart\'inez-Pa\~neda
|
Chuanjie Cui, Rujin Ma, Emilio Mart\'inez-Pa\~neda
|
A phase field formulation for dissolution-driven stress corrosion
cracking
| null |
Journal of the Mechanics and Physics of Solids (2021)
|
10.1016/j.jmps.2020.104254
| null |
physics.app-ph cond-mat.mtrl-sci cs.CE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a new theoretical and numerical framework for modelling
mechanically-assisted corrosion in elastic-plastic solids. Both pitting and
stress corrosion cracking (SCC) can be captured, as well as the pit-to-crack
transition. Localised corrosion is assumed to be dissolution-driven and a
formulation grounded upon the film rupture-dissolution-repassivation mechanism
is presented to incorporate the influence of film passivation. The model
incorporates, for the first time, the role of mechanical straining as the
electrochemical driving force, accelerating corrosion kinetics. The
computational complexities associated with tracking the evolving
metal-electrolyte interface are resolved by making use of a phase field
paradigm, enabling an accurate approximation of complex SCC morphologies. The
coupled electro-chemo-mechanical formulation is numerically implemented using
the finite element method and an implicit time integration scheme;
displacements, phase field order parameter and concentration are the primary
variables. Five case studies of particular interest are addressed to showcase
the predictive capabilities of the model, revealing an excellent agreement with
analytical solutions and experimental measurements. By modelling these
paradigmatic 2D and 3D boundary value problems we show that our formulation can
capture: (i) the transition from activation-controlled corrosion to
diffusion-controlled corrosion, (ii) the sensitivity of interface kinetics to
mechanical stresses and strains, (iii) the role of film passivation in reducing
corrosion rates, and (iv) the dependence of the stability of the passive film
to local strain rates. The influence of these factors in driving the shape
change of SCC defects, including the pit-to-crack transition, is a natural
outcome of the model, laying the foundations for a mechanistic assessment of
engineering materials and structures.
|
[{'version': 'v1', 'created': 'Tue, 24 Nov 2020 12:49:15 GMT'}]
|
2020-12-30
|
[array(['Cui', 'Chuanjie', ''], dtype=object)
array(['Ma', 'Rujin', ''], dtype=object)
array(['Martínez-Pañeda', 'Emilio', ''], dtype=object)]
|
5,303 |
nucl-th/0509025
|
Mikhail Zverev
|
S.S.Pankratov, M.Baldo, U.Lombardo, E.E.Saperstein and M.V.Zverev
|
Solution of the microscopic gap equation for a slab of nuclear matter
with the Paris NN-potential
|
17 pages, 12 figures
|
Nucl.Phys. A765 (2006) 61-74
|
10.1016/j.nuclphysa.2005.10.010
| null |
nucl-th
| null |
The gap equation in the $^1S_0$-channel is solved for a nuclear slab with the
separable form of the Paris potential. The gap equation is considered in the
model space in terms of the effective pairing interaction which is found in the
complementary subspace. The absolute value of the gap $\Delta$ turned out to be
very sensitive to the cutoff $K_{max}$ in the momentum space in the equation
for the effective interaction. It is necessary to take $K_{max}=160-180
fm^{-1}$ to guarantee 1% accuracy for $\Delta$. The gap equation itself is
solved directly, without any additional approximations. The solution reveals
the surface enhancement of the gap $\Delta$ which was earlier found with an
approximate consideration. A strong surface-volume interplay was found also
implying a kind of the proximity effect. The diagonal matrix elements of
$\Delta$ turned out to be rather close to the empirical values for heavy atomic
nuclei.
|
[{'version': 'v1', 'created': 'Mon, 12 Sep 2005 12:31:41 GMT'}]
|
2009-11-11
|
[array(['Pankratov', 'S. S.', ''], dtype=object)
array(['Baldo', 'M.', ''], dtype=object)
array(['Lombardo', 'U.', ''], dtype=object)
array(['Saperstein', 'E. E.', ''], dtype=object)
array(['Zverev', 'M. V.', ''], dtype=object)]
|
5,304 |
1608.01540
|
Fedor Sandomirskiy
|
Anna Bogomolnaia, Herve Moulin, Fedor Sandomirskiy, and Elena
Yanovskaya
|
Dividing goods or bads under additive utilities
|
major revision with extended comparison of Competitive and
Egalitarian rules; 27 pages, 3 figures
| null | null | null |
cs.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We compare the Egalitarian Equivalent and the Competitive Equilibrium with
Equal Incomes rules to divide a bundle of goods (heirlooms) or a bundle of bads
(chores).
For goods the Competitive division fares better, as it is Resource Monotonic,
and makes it harder to strategically misreport preferences. But for bads, the
Competitive rule, unlike the Egalitarian one, is multivalued, harder to
compute, and admits no continuous selection.
We also provide an axiomatic characterization of the Competitive rule based
on the simple formulation of Maskin Monotonicity under additive utilities.
|
[{'version': 'v1', 'created': 'Thu, 4 Aug 2016 14:19:21 GMT'}
{'version': 'v2', 'created': 'Mon, 5 Jun 2017 16:39:27 GMT'}]
|
2017-06-06
|
[array(['Bogomolnaia', 'Anna', ''], dtype=object)
array(['Moulin', 'Herve', ''], dtype=object)
array(['Sandomirskiy', 'Fedor', ''], dtype=object)
array(['Yanovskaya', 'Elena', ''], dtype=object)]
|
5,305 |
1504.03193
|
Catalin Dragan
|
Catalin Dragan, Victor Kaftal
|
Sums of equivalent sequences of positive operators in von Neumann
factors
| null | null | null | null |
math.OA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let A be a positive operator in an infinite sigma-finite von Neumann factor M
and let B_j be a sequence of positive elements in M. We give sufficient
conditions for decomposing A into a sum of elements C_j equivalent to B_j for
all j ( C equivalent to B in M means that C=XX* and B=X*X for some X in M) and
when C_j are unitarily equivalent to B_j for all j. This extends recent work of
Bourin and Lee for the case of B_j= B for all j and M=B(H) and answers
affirmatively their conjecture. For the case when B_j= B for all j we provide
necessary conditions, which in the type III case are also sufficient.
|
[{'version': 'v1', 'created': 'Mon, 13 Apr 2015 14:13:09 GMT'}
{'version': 'v2', 'created': 'Wed, 30 Dec 2015 18:46:57 GMT'}]
|
2015-12-31
|
[array(['Dragan', 'Catalin', ''], dtype=object)
array(['Kaftal', 'Victor', ''], dtype=object)]
|
5,306 |
0709.2738
|
Eric Brewe
|
Eric Brewe, Vashti Sawtelle, Priscilla Pamela
|
Impacts of real-time data collection on introductory algebra-based
physics
| null | null | null | null |
physics.ed-ph
| null |
Including real-time data collection technology is a common practice to
upgrade physics labs, and the assumption is such technology improves student
learning, yet little has been done to demonstrate the effects of technology.
Specific activities have been shown to be enhanced by technology, but the
effects on the class as a whole has been left unexplored. This paper
investigates the effects of technology on two algebra based introductory
physics classes. In this paper, we use FCI, MPEX, surveys, and ethnographies to
document the improvement in learning as real-time data collection technology is
incorporated into a modeling physics class. The two classes examined differed
only in the inclusion of technology. The results found were significant.
Students in the class with high technology were found to have learned more than
students in the class with no technology. This paper explores the gains in
learning and relates them directly to the addition of technology.
|
[{'version': 'v1', 'created': 'Tue, 18 Sep 2007 01:12:15 GMT'}]
|
2007-09-19
|
[array(['Brewe', 'Eric', ''], dtype=object)
array(['Sawtelle', 'Vashti', ''], dtype=object)
array(['Pamela', 'Priscilla', ''], dtype=object)]
|
5,307 |
1106.1611
|
Arnaud de Lavallaz
|
Arnaud de Lavallaz and Malcolm Fairbairn
|
Effects of voids on the reconstruction of the equation of state of Dark
Energy
|
6 pages, 4 figures
|
Phys. Rev. D 84, 083005 (2011)
|
10.1103/PhysRevD.84.083005
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We quantify the effects of the voids known to exist in the Universe upon the
reconstruction of the dark energy equation of state $w$. We show that the
effect can start to be comparable with some of the other errors taken into
account when analysing supernova data, depending strongly upon the low redshift
cut-off used in the sample. For the supernova data alone, the error induced in
the reconstruction of $w$ is much larger than the percent level. When the
Baryonic Acoustic Oscillations and the CMB data are included in the fit, the
effect of the voids upon the determination of $w$ is much lessened, but is not
much smaller than some of the other errors taken into consideration when
performing such fits.
|
[{'version': 'v1', 'created': 'Wed, 8 Jun 2011 18:00:02 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Jun 2011 13:49:28 GMT'}
{'version': 'v3', 'created': 'Wed, 12 Oct 2011 10:17:34 GMT'}]
|
2011-10-13
|
[array(['de Lavallaz', 'Arnaud', ''], dtype=object)
array(['Fairbairn', 'Malcolm', ''], dtype=object)]
|
5,308 |
1503.00008
|
Hugh Lippincott
|
C. Amole, M. Ardid, D. M. Asner, D. Baxter, E. Behnke, P.
Bhattacharjee, H. Borsodi, M. Bou-Cabo, S. J. Brice, D. Broemmelsiek, K.
Clark, J. I. Collar, P. S. Cooper, M. Crisler, C. E. Dahl, S. Daley, M. Das,
F. Debris, N. Dhungana, J. Farine, I. Felis, R. Filgas, M. Fines-Neuschild,
F. Girard, G. Giroux, M. Hai, J. Hall, O. Harris, C. M. Jackson, M. Jin, C.
B. Krauss, M. Lafreni\`ere, M. Laurin, I. Lawson, I. Levine, W. H.
Lippincott, E. Mann, J. P. Martin, D. Maurya, P. Mitra, R. Neilson, A. J.
Noble, A. Plante, R. B. Podviianiuk, S. Priya, A. E. Robinson, M. Ruschman,
O. Scallon, S. Seth, A. Sonnenschein, N. Starinski, I. \v{S}tekl, E.
V\`azquez-Ja\`uregui, J. Wells, U. Wichoski, V. Zacek, and J. Zhang
|
Dark Matter Search Results from the PICO-2L C$_3$F$_8$ Bubble Chamber
|
6 pages, 6 figures, v2 to match published version
|
Phys. Rev. Lett. 114, 231302 (2015)
|
10.1103/PhysRevLett.114.231302
| null |
astro-ph.CO physics.ins-det
|
http://creativecommons.org/publicdomain/zero/1.0/
|
New data are reported from the operation of a 2-liter C$_3$F$_8$ bubble
chamber in the 2100 meter deep SNOLAB underground laboratory, with a total
exposure of 211.5 kg-days at four different recoil energy thresholds ranging
from 3.2 keV to 8.1 keV. These data show that C3F8 provides excellent electron
recoil and alpha rejection capabilities at very low thresholds, including the
first observation of a dependence of acoustic signal on alpha energy. Twelve
single nuclear recoil event candidates were observed during the run. The
candidate events exhibit timing characteristics that are not consistent with
the hypothesis of a uniform time distribution, and no evidence for a dark
matter signal is claimed. These data provide the most sensitive direct
detection constraints on WIMP-proton spin-dependent scattering to date, with
significant sensitivity at low WIMP masses for spin-independent WIMP-nucleon
scattering.
|
[{'version': 'v1', 'created': 'Fri, 27 Feb 2015 21:01:17 GMT'}
{'version': 'v2', 'created': 'Mon, 29 Jun 2015 15:47:00 GMT'}]
|
2015-06-30
|
[array(['Amole', 'C.', ''], dtype=object)
array(['Ardid', 'M.', ''], dtype=object)
array(['Asner', 'D. M.', ''], dtype=object)
array(['Baxter', 'D.', ''], dtype=object)
array(['Behnke', 'E.', ''], dtype=object)
array(['Bhattacharjee', 'P.', ''], dtype=object)
array(['Borsodi', 'H.', ''], dtype=object)
array(['Bou-Cabo', 'M.', ''], dtype=object)
array(['Brice', 'S. J.', ''], dtype=object)
array(['Broemmelsiek', 'D.', ''], dtype=object)
array(['Clark', 'K.', ''], dtype=object)
array(['Collar', 'J. I.', ''], dtype=object)
array(['Cooper', 'P. S.', ''], dtype=object)
array(['Crisler', 'M.', ''], dtype=object)
array(['Dahl', 'C. E.', ''], dtype=object)
array(['Daley', 'S.', ''], dtype=object)
array(['Das', 'M.', ''], dtype=object)
array(['Debris', 'F.', ''], dtype=object)
array(['Dhungana', 'N.', ''], dtype=object)
array(['Farine', 'J.', ''], dtype=object)
array(['Felis', 'I.', ''], dtype=object)
array(['Filgas', 'R.', ''], dtype=object)
array(['Fines-Neuschild', 'M.', ''], dtype=object)
array(['Girard', 'F.', ''], dtype=object)
array(['Giroux', 'G.', ''], dtype=object)
array(['Hai', 'M.', ''], dtype=object)
array(['Hall', 'J.', ''], dtype=object)
array(['Harris', 'O.', ''], dtype=object)
array(['Jackson', 'C. M.', ''], dtype=object)
array(['Jin', 'M.', ''], dtype=object)
array(['Krauss', 'C. B.', ''], dtype=object)
array(['Lafrenière', 'M.', ''], dtype=object)
array(['Laurin', 'M.', ''], dtype=object)
array(['Lawson', 'I.', ''], dtype=object)
array(['Levine', 'I.', ''], dtype=object)
array(['Lippincott', 'W. H.', ''], dtype=object)
array(['Mann', 'E.', ''], dtype=object)
array(['Martin', 'J. P.', ''], dtype=object)
array(['Maurya', 'D.', ''], dtype=object)
array(['Mitra', 'P.', ''], dtype=object)
array(['Neilson', 'R.', ''], dtype=object)
array(['Noble', 'A. J.', ''], dtype=object)
array(['Plante', 'A.', ''], dtype=object)
array(['Podviianiuk', 'R. B.', ''], dtype=object)
array(['Priya', 'S.', ''], dtype=object)
array(['Robinson', 'A. E.', ''], dtype=object)
array(['Ruschman', 'M.', ''], dtype=object)
array(['Scallon', 'O.', ''], dtype=object)
array(['Seth', 'S.', ''], dtype=object)
array(['Sonnenschein', 'A.', ''], dtype=object)
array(['Starinski', 'N.', ''], dtype=object)
array(['Štekl', 'I.', ''], dtype=object)
array(['Vàzquez-Jaùregui', 'E.', ''], dtype=object)
array(['Wells', 'J.', ''], dtype=object)
array(['Wichoski', 'U.', ''], dtype=object)
array(['Zacek', 'V.', ''], dtype=object)
array(['Zhang', 'J.', ''], dtype=object)]
|
5,309 |
hep-th/0208138
|
Dr. Haret Rosu
|
Carlos Castro
|
Maximal-acceleration phase space relativity from Clifford algebras
|
15 pages, revised Latex file
| null | null | null |
hep-th
| null |
We present a new physical model that links the maximum speed of light with
the minimal Planck scale into a maximal-acceleration Relativity principle in
the spacetime tangent bundle and in phase spaces (cotangent bundle). Crucial in
order to establish this link is the use of Clifford algebras in phase spaces.
The maximal proper-acceleration bound is a = c^2/ \Lambda in full agreement
with the old predictions of Caianiello, the Finslerian geometry point of view
of Brandt and more recent results in the literature. We present the reasons why
an Extended Scale Relativity based on Clifford spaces is physically more
appealing than those based on kappa-deformed Poincare algebras and the
inhomogeneous quantum groups operating in quantum Minkowski spacetimes. The
main reason being that the Planck scale should not be taken as a deformation
parameter to construct quantum algebras but should exist already as the minimum
scale in Clifford spaces.
|
[{'version': 'v1', 'created': 'Tue, 20 Aug 2002 03:54:19 GMT'}
{'version': 'v2', 'created': 'Sun, 8 Sep 2002 21:51:20 GMT'}]
|
2007-05-23
|
[array(['Castro', 'Carlos', ''], dtype=object)]
|
5,310 |
1002.3338
|
Daniele Alessandrini
|
Daniele Alessandrini and Alberto Saracco
|
Convexity properties and complete hyperbolicity of Lempert's elliptic
tubes
|
11 pages
|
International Journal of Mathematics 22 (2011), 603-617
| null | null |
math.CV math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that elliptic tubes over properly convex domains of the real
projective space are C-convex and complete Kobayashi-hyperbolic. We also study
a natural construction of complexification of convex real projective manifolds.
|
[{'version': 'v1', 'created': 'Wed, 17 Feb 2010 18:09:53 GMT'}]
|
2018-09-25
|
[array(['Alessandrini', 'Daniele', ''], dtype=object)
array(['Saracco', 'Alberto', ''], dtype=object)]
|
5,311 |
1203.5641
|
Jakob Jonsson
|
Jakob Jonsson
|
Exact Sequences for the Homology of the Matching Complex
|
31 pages
|
J. Combin. Theory Ser. A 115 (2008) 1504-1526
|
10.1016/j.jcta.2008.03.001
| null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Building on work by Bouc and by Shareshian and Wachs, we provide a toolbox of
long exact sequences for the reduced simplicial homology of the matching
complex $M_n$, which is the simplicial complex of matchings in the complete
graph $K_n$. Combining these sequences in different ways, we prove several
results about the 3-torsion part of the homology of $M_n$. First, we
demonstrate that there is nonvanishing 3-torsion in $H_d(M_n;Z)$ whenever
$\nu_n \le d \le (n-6}/2$, where $\nu_n= \lceil (n-4)/3 \rceil$. By results due
to Bouc and to Shareshian and Wachs, $H_{\nu_n}(M_n;Z)$ is a nontrivial
elementary 3-group for almost all $n$ and the bottom nonvanishing homology
group of $M_n$ for all $n \neq 2$. Second, we prove that $H_d(M_n;Z)$ is a
nontrivial 3-group whenever $\nu_n \le d \le (2n-9)/5$. Third, for each $k \ge
0$, we show that there is a polynomial $f_k(r)$ of degree 3k such that the
dimension of $H_{k-1+r}(M_{2k+1+3r};Z_3)$, viewed as a vector space over $Z_3$,
is at most $f_k(r)$ for all $r \ge k+2$.
|
[{'version': 'v1', 'created': 'Mon, 26 Mar 2012 12:00:55 GMT'}]
|
2012-03-27
|
[array(['Jonsson', 'Jakob', ''], dtype=object)]
|
5,312 |
1504.00604
|
Norbert Kaiser
|
N. Kaiser
|
Quartic isospin asymmetry energy of nuclear matter from chiral
pion-nucleon dynamics
|
6 pages, 2 figures
| null | null | null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Based on a chiral approach to nuclear matter, we calculate the quartic term
in the expansion of the equation of state of isospin-asymmetric nuclear matter.
The contributions to the quartic isospin asymmetry energy $A_4(k_f)$ arising
from $1\pi$-exchange and chiral $2\pi$-exchange in nuclear matter are
calculated analytically together with three-body terms involving virtual
$\Delta(1232)$-isobars. From these interaction terms one obtains at saturation
density $\rho_0 = 0.16\,$fm$^{-3}$ the value $A_4(k_{f0})= 1.5\,$MeV, more than
three times as large as the kinetic energy part. Moreover, iterated
$1\pi$-exchange exhibits components for which the fourth derivative with the
respect to the isospin asymmetry parameter $\delta$ becomes singular at $\delta
=0$. The genuine presence of a non-analytical term $\delta^4 \ln|\delta|$ in
the expansion of the energy per particle of isospin-asymmetric nuclear matter
is demonstrated by evaluating a s-wave contact interaction at second order.
|
[{'version': 'v1', 'created': 'Thu, 2 Apr 2015 16:14:47 GMT'}]
|
2015-04-03
|
[array(['Kaiser', 'N.', ''], dtype=object)]
|
5,313 |
1603.05687
|
Vernesa Smolcic
|
Vernesa Smolcic (University of Zagreb)
|
Radio continuum surveys and galaxy evolution: The AGN view
|
13 pages, 6 figures; Proceedings of Science for "The many facets of
extragalactic radio surveys: towards new scientific challenges",
(EXTRA-RADSUR2015)
| null | null | null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Understanding how galaxies form in the early universe and their subsequent
evolution through cosmic time is a major goal of modern astrophysics.
Panchromatic look-back sky surveys significantly advanced the field in the past
decades, and we are now entering an even more fruitful period - a 'golden age'
of radio astronomy - with upgraded, and new facilities delivering an order of
magnitude increase in sensitivity. An overview of recent developments in radio
continuum sky surveys, focusing on the physical properties and cosmic evolution
of radio AGN since z~5 is presented here.
|
[{'version': 'v1', 'created': 'Thu, 17 Mar 2016 21:01:00 GMT'}]
|
2016-03-21
|
[array(['Smolcic', 'Vernesa', '', 'University of Zagreb'], dtype=object)]
|
5,314 |
2305.16962
|
Wanxin Li
|
Hao Guo, Wanxin Li, Mark Nejad
|
A Location-based and Hierarchical Framework for Fast Consensus in
Blockchain Networks
|
Published in 2021 4th International Conference on Hot
Information-Centric Networking (HotICN)
| null |
10.1109/HotICN53262.2021.9680858
| null |
cs.CR cs.DC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Blockchain-based IoT systems can manage IoT devices and achieve a high level
of data integrity, security, and provenance. However, incorporating the
existing consensus protocols in many IoT systems limits scalability and leads
to high computational cost and network latency. We propose a hierar-chical and
location-aware consensus protocol for IoI-blockchain applications inspired by
the original Raft protocol to address these limitations. The proposed consensus
protocol generates the consensus candidate groups based on nodes' individual
reputation and distance information to elect the leader in each sub-layer
blockchain and uses our threshold signature scheme to reach global consensus.
Experimental results show that the proposed consensus protocol is scalable for
large IoT applications and significantly reduces the communication cost,
network latency, and agreement time by more than 50% compared with the Raft
protocol for consensus processing.
|
[{'version': 'v1', 'created': 'Fri, 26 May 2023 14:18:30 GMT'}]
|
2023-05-29
|
[array(['Guo', 'Hao', ''], dtype=object)
array(['Li', 'Wanxin', ''], dtype=object)
array(['Nejad', 'Mark', ''], dtype=object)]
|
5,315 |
1903.12098
|
Fung Lam
|
F. Lam
|
The Navier-Stokes equations in primitive variables
|
49 pages; 7 references; 2 new sections (7 and 8); updated section 1;
some minor modifications
| null | null | null |
math.AP physics.flu-dyn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Navier-Stokes equations in the primitive formulation for incompressible
flow describe the evolution of velocity and pressure, without recourse to
vorticity. We show that, beyond the finite Leray-Hopf regularity interval,
every postulated strong solution is accompanied by infinitely many
diffusion-dominated percolations of arbitrary size, while the momentum deficit
caused by the non-linearity is compensated by the pressure gradient. In the
upper half space, we demonstrate how sequences of these collective companions
can be re-scaled into an absurd singularity. Owning to the passive nature of
the pressure, there exist no essential a priori bounds for establishing the
uniqueness of primitive solutions. With the illustration of well-exploited
examples of closed-form basic flows, we elucidate the reason why perturbations,
infinitesimal or finite, instigate indeterminate states that render the concept
of flow instability inadmissible. An effort has also been made to reappraise a
number of important issues in fluid dynamics. Unfortunately, the primitive
theory cannot serve as a reliable tool for prediction. Nevertheless, a
dedicated effort has been made to elaborate a priori bounds for vorticity
dynamics for ideal as well as real fluids. As a result, we are able to
establish long-time regularity of the Cauchy problem for incompressible flows.
A main conclusion is that no events of finite-time blow-up can ever occur in
the Euler or Navier-Stokes equations for initial data of finite energy.
|
[{'version': 'v1', 'created': 'Wed, 27 Mar 2019 15:45:30 GMT'}
{'version': 'v2', 'created': 'Fri, 26 Apr 2019 15:12:34 GMT'}
{'version': 'v3', 'created': 'Sun, 28 Mar 2021 13:23:15 GMT'}]
|
2021-03-30
|
[array(['Lam', 'F.', ''], dtype=object)]
|
5,316 |
2006.08002
|
Stefan Hollands
|
Thomas Faulkner, Stefan Hollands, Brian Swingle, Yixu Wang
|
Approximate recovery and relative entropy I. general von Neumann
subalgebras
|
LaTeX, 47 pages, no figures
| null | null | null |
quant-ph hep-th math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove the existence of a universal recovery channel that approximately
recovers states on a v. Neumann subalgebra when the change in relative entropy,
with respect to a fixed reference state, is small. Our result is a
generalization of previous results that applied to type-I v. Neumann algebras
by Junge at al. [arXiv:1509.07127]. We broadly follow their proof strategy but
consider here arbitrary v. Neumann algebras, where qualitatively new issues
arise. Our results hinge on the construction of certain analytic vectors and
computations/estimations of their Araki-Masuda $L_p$ norms. We comment on
applications to the quantum null energy condition.
|
[{'version': 'v1', 'created': 'Sun, 14 Jun 2020 20:00:38 GMT'}]
|
2020-06-16
|
[array(['Faulkner', 'Thomas', ''], dtype=object)
array(['Hollands', 'Stefan', ''], dtype=object)
array(['Swingle', 'Brian', ''], dtype=object)
array(['Wang', 'Yixu', ''], dtype=object)]
|
5,317 |
math/0603672
|
Thorsten Holm
|
Karin Erdmann, Thorsten Holm
|
Maximal n-orthogonal modules for selfinjective algebras
|
10 pages
| null | null | null |
math.RT
| null |
Let A be a selfinjective algebra. We show that, for any n, maximal
n-orthogonal A-modules (in the sense of Iyama), rarely exist. More precisely,
we prove that if A admits a maximal n-orthogonal module, then all A-modules are
of complexity at most 1.
|
[{'version': 'v1', 'created': 'Wed, 29 Mar 2006 12:30:31 GMT'}]
|
2007-05-23
|
[array(['Erdmann', 'Karin', ''], dtype=object)
array(['Holm', 'Thorsten', ''], dtype=object)]
|
5,318 |
astro-ph/0211009
|
Vladimir S. Manko
|
N.R. Sibgatullin, A.A. Garcia, V.S. Manko
|
The rotation curve and mass-distribution in highly flattened galaxies
|
13 pages, 2 figures
|
Astron.Lett. 29 (2003) 825-830
|
10.1134/1.1631413
| null |
astro-ph gr-qc
| null |
A new method is developed which permits the reconstruction of the
surface-density distribution in the galactic disk of finite radius from an
arbitrary smooth distribution of the angular velocity via two simple
quadratures. The existence of upper limits for disk's mass and radius during
the analytic continuation of rotation curves into the hidden (non-radiating)
part of the disk is demonstrated.
|
[{'version': 'v1', 'created': 'Fri, 1 Nov 2002 19:12:24 GMT'}]
|
2009-11-07
|
[array(['Sibgatullin', 'N. R.', ''], dtype=object)
array(['Garcia', 'A. A.', ''], dtype=object)
array(['Manko', 'V. S.', ''], dtype=object)]
|
5,319 |
1203.5836
|
Seyed Hadi Ebrahimnejad Rahbari
|
Hadi Ebrahimnejad and Mona Berciu
|
Trapping of three-dimensional Holstein polarons by various impurities
|
13 pages, 11 figures; Accepted for publication in Phys Rev B
|
Phys. Rev. B 85, 165117 (2012)
|
10.1103/PhysRevB.85.165117
| null |
cond-mat.str-el cond-mat.dis-nn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the bound states of a three-dimensional Holstein polaron near
various kinds of single impurities, using the momentum average approximation.
We show that the electron-phonon coupling is responsible for a strong
renormalization of the impurity potential, resulting in an effective potential
with significant retardation effects, which describes essential physics ignored
by "instantaneous" approximations. The accuracy of our approximation is gauged
by comparison with results from Diagrammatic Monte Carlo for the case of an
impurity that modifies the on-site energy of the electron. We also discuss
impurities that modify the local strength of the electron-phonon coupling, as
well as isotope substitutions that change both the electron-phonon coupling and
the phonon frequency, and contrast and highlight the difference between these
cases.
|
[{'version': 'v1', 'created': 'Mon, 26 Mar 2012 22:52:43 GMT'}]
|
2012-04-12
|
[array(['Ebrahimnejad', 'Hadi', ''], dtype=object)
array(['Berciu', 'Mona', ''], dtype=object)]
|
5,320 |
2105.00040
|
Dazhi Xu
|
Dan Wang, Dazhi Xu
|
Nonadiabatic evolution and thermodynamics of a time-dependent open
quantum system
|
11 pages, 7 figures
|
Phys. Rev. A 104, 032201 (2021)
|
10.1103/PhysRevA.104.032201
| null |
quant-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We investigate the dynamic evolution and thermodynamic process of a driven
quantum system immersed in a finite-temperature heat bath. A Born-Markovian
quantum master equation is formally derived for the time-dependent system with
discrete energy levels. This quantum master equation can be applied to
situations with a broad range of driving speeds and bath temperatures and thus
be used to study the finite-time quantum thermodynamics even when nonadiabatic
transition and dissipation coexist. The dissipative Landau-Zener model is
analyzed as an example. The population evolution and transition probability of
the model reveal the importance of the competition between driving and
dissipation beyond the adiabatic regime. Moreover, local maximums of
irreversible entropy production occur at intermediate sweep velocity and finite
temperature, which the low-dissipation model cannot describe.
|
[{'version': 'v1', 'created': 'Fri, 30 Apr 2021 18:38:47 GMT'}
{'version': 'v2', 'created': 'Wed, 12 May 2021 06:48:41 GMT'}]
|
2021-09-08
|
[array(['Wang', 'Dan', ''], dtype=object)
array(['Xu', 'Dazhi', ''], dtype=object)]
|
5,321 |
1905.09253
|
Navin Sridhar
|
Navin Sridhar (Columbia University, USA), Sudip Bhattacharyya (TIFR,
India), Sunil Chandra (North-West University, Potchefstroom, South Africa),
H. M. Antia (TIFR, India)
|
Broadband reflection spectroscopy of MAXI J1535-571 using AstroSat:
Estimation of black hole mass and spin
|
Accepted for publication in MNRAS
| null |
10.1093/mnras/stz1476
| null |
astro-ph.HE hep-ex physics.data-an
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the results from \textit{AstroSat} observations of the transient
Galactic black hole X-ray binary MAXI J1535-571 during its hard-intermediate
state of the 2017 outburst. We systematically study the individual and joint
spectra from two simultaneously observing \textit{AstroSat} X-ray instruments,
and probe and measure a number of parameter values of accretion disc, corona
and reflection from the disc in the system using models with generally
increasing complexities. Using our broadband ($1.3-70$ keV) X-ray spectrum, we
clearly show that a soft X-ray instrument, which works below $\sim 10-12$ keV,
alone cannot correctly characterize the Comptonizing component from the corona,
thus highlighting the importance of broadband spectral analysis. By fitting the
reflection spectrum with the latest version of the \textsc{relxill} family of
relativistic reflection models, we constrain the black hole's dimensionless
spin parameter to be $0.67^{+0.16}_{-0.04}$. We also jointly use the reflection
spectral component (\textsc{relxill}) and a general relativistic thin disc
component (\texttt{Kerrbb}), and estimate the black hole's mass and distance to
be $10.39_{-0.62}^{+0.61} M_{\odot}$ and $5.4_{-1.1}^{+1.8}$ kpc respectively.
|
[{'version': 'v1', 'created': 'Wed, 22 May 2019 17:19:56 GMT'}]
|
2019-06-04
|
[array(['Sridhar', 'Navin', '', 'Columbia University, USA'], dtype=object)
array(['Bhattacharyya', 'Sudip', '', 'TIFR,\n India'], dtype=object)
array(['Chandra', 'Sunil', '',
'North-West University, Potchefstroom, South Africa'], dtype=object)
array(['Antia', 'H. M.', '', 'TIFR, India'], dtype=object)]
|
5,322 |
1007.2559
|
Laurent Mazet
|
Laurent Mazet
|
A general halfspace theorem for constant mean curvature surfaces
|
3 figures, sign mistakes at the beginning of Section 6 are corrected
| null | null | null |
math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we prove a general halfspace theorem for constant mean
curvature surfaces. Under certain hypotheses, we prove that, in an ambient
space M^3, any constant mean curvature H_0 surface on one side of a constant
mean curvature H_0 surface \Sigma_0 is an equidistant surface to \Sigma_0. The
main hypotheses of the theorem are that \Sigma_0 is parabolic and the mean
curvature of the equidistant surfaces to \Sigma_0 evolves in a certain way.
|
[{'version': 'v1', 'created': 'Thu, 15 Jul 2010 13:48:05 GMT'}
{'version': 'v2', 'created': 'Thu, 2 Sep 2010 14:45:01 GMT'}
{'version': 'v3', 'created': 'Fri, 18 Feb 2011 15:35:12 GMT'}]
|
2011-02-21
|
[array(['Mazet', 'Laurent', ''], dtype=object)]
|
5,323 |
2010.03899
|
Gabriel Synnaeve
|
Daniel Haziza, J\'er\'emy Rapin, Gabriel Synnaeve
|
Population Based Training for Data Augmentation and Regularization in
Speech Recognition
|
tech report from Dec. 2019
| null | null | null |
cs.CL cs.SD eess.AS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Varying data augmentation policies and regularization over the course of
optimization has led to performance improvements over using fixed values. We
show that population based training is a useful tool to continuously search
those hyperparameters, within a fixed budget. This greatly simplifies the
experimental burden and computational cost of finding such optimal schedules.
We experiment in speech recognition by optimizing SpecAugment this way, as well
as dropout. It compares favorably to a baseline that does not change those
hyperparameters over the course of training, with an 8% relative WER
improvement. We obtain 5.18% word error rate on LibriSpeech's test-other.
|
[{'version': 'v1', 'created': 'Thu, 8 Oct 2020 11:00:18 GMT'}]
|
2020-10-09
|
[array(['Haziza', 'Daniel', ''], dtype=object)
array(['Rapin', 'Jérémy', ''], dtype=object)
array(['Synnaeve', 'Gabriel', ''], dtype=object)]
|
5,324 |
astro-ph/0502102
|
Chengmin Zhang
|
C. M. Zhang, H.X. Yin, and Y.H. Zhao
|
The Interpretations For the Low and High Frequency QPO Correlations of
X-ray Sources Among White Dwarfs, Neutron Stars and Black Holes
|
11 pages, 1 figure, accepted by PASP
|
Publ.Astron.Soc.Pac.119:393-397,2007
|
10.1086/518129
| null |
astro-ph
| null |
It is found that there exists an empirical linear relation between the high
frequency $\nhigh$ and low frequency $\nlow$ of quasi-periodic oscillations
(QPOs) for black hole candidate (BHC), neutron star (NS) and white dwarf (WD)
in the binary systems, which spans five orders of magnitude in frequency.
For the NS Z (Atoll) sources,
$\nu_{high}$ and $\nu_{low}$ are identified as the lower kHz QPO frequency
and horizontal branch oscillations (HBOs) $\nh$ (broad noise components); for
the black hole candidates and low-luminosity neutron stars, they are the QPOs
and broad noise components at frequencies between 1 and 10 Hz; for WDs, they
are the ``dwarf nova oscillations'' (DNOs) and QPOs of cataclysmic variables
(CVs). To interpret this relation, our model ascribes $\nu_{high}$ to the
Alfv\'en wave oscillation frequency at a preferred radius and $\nu_{low}$ to
the same mechanism at another radius. Then, we can obtain $\nlow = 0.08
\nhigh$ and the relation between the upper kHz QPO frequency $\nt$ and HBO to
be $\nh \simeq 56 ({\rm Hz}) (\nt/{\rm kHz})^{2}$, which are in accordance with
the observed empirical relations. Furthermore, some implications of model are
discussed, including why QPO frequencies of white dwarfs and neutron stars span
five orders of magnitude in frequency. \\
|
[{'version': 'v1', 'created': 'Fri, 4 Feb 2005 15:05:00 GMT'}
{'version': 'v2', 'created': 'Wed, 14 Mar 2007 15:02:40 GMT'}]
|
2008-11-26
|
[array(['Zhang', 'C. M.', ''], dtype=object)
array(['Yin', 'H. X.', ''], dtype=object)
array(['Zhao', 'Y. H.', ''], dtype=object)]
|
5,325 |
1611.01324
|
Dixan Pe\~na Pe\~na
|
Dixan Pe\~na Pe\~na, Irene Sabadini, Franciscus Sommen
|
Fueter's theorem for monogenic functions in biaxial symmetric domains
|
11 pages
| null | null | null |
math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we generalize the result on Fueter's theorem from [10] by
Eelbode et al. to the case of monogenic functions in biaxially symmetric
domains. To obtain this result, Eelbode et al. used representation theory
methods but their result also follows from a direct calculus we established in
our paper [21]. In this paper we first generalize [21] to the biaxial case and
derive the main result from that.
|
[{'version': 'v1', 'created': 'Fri, 4 Nov 2016 11:06:28 GMT'}]
|
2016-11-07
|
[array(['Peña', 'Dixan Peña', ''], dtype=object)
array(['Sabadini', 'Irene', ''], dtype=object)
array(['Sommen', 'Franciscus', ''], dtype=object)]
|
5,326 |
2108.12125
|
Toshiyuki Kobayashi
|
Yves Benoist, Yui Inoue, Toshiyuki Kobayashi
|
Temperedness criterion of the tensor product of parabolic induction for
$GL_n$
|
Final version, to appear in Journal of Algebra
|
Journal of Algebra 617 (2023), pp. 1-16
|
10.1016/j.jalgebra.2022.10.029
| null |
math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give a necessary and sufficient condition for a pair of parabolic
subgroups $P$ and $Q$ of $G=GL_n(\mathbb{R})$ such that the tensor product of
any two unitarily induced representations from $P$ and $Q$ are tempered. We
also give an $L^p$-estimate of matrix coefficients of the regular
representations on $L^2(G/L)$ when $L$ is a Levi subgroup of $G$.
|
[{'version': 'v1', 'created': 'Fri, 27 Aug 2021 05:40:35 GMT'}
{'version': 'v2', 'created': 'Fri, 29 Jul 2022 05:03:47 GMT'}
{'version': 'v3', 'created': 'Fri, 11 Nov 2022 00:22:26 GMT'}]
|
2023-04-25
|
[array(['Benoist', 'Yves', ''], dtype=object)
array(['Inoue', 'Yui', ''], dtype=object)
array(['Kobayashi', 'Toshiyuki', ''], dtype=object)]
|
5,327 |
1603.05572
|
Hong Liu
|
Hong Liu, Rongrong Ji, Yongjian Wu, Gang Hua
|
Supervised Matrix Factorization for Cross-Modality Hashing
|
7 pages, 4 figures
| null | null | null |
cs.IR
|
http://creativecommons.org/licenses/by/4.0/
|
Matrix factorization has been recently utilized for the task of multi-modal
hashing for cross-modality visual search, where basis functions are learned to
map data from different modalities to the same Hamming embedding. In this
paper, we propose a novel cross-modality hashing algorithm termed Supervised
Matrix Factorization Hashing (SMFH) which tackles the multi-modal hashing
problem with a collective non-matrix factorization across the different
modalities. In particular, SMFH employs a well-designed binary code learning
algorithm to preserve the similarities among multi-modal original features
through a graph regularization. At the same time, semantic labels, when
available, are incorporated into the learning procedure. We conjecture that all
these would facilitate to preserve the most relevant information during the
binary quantization process, and hence improve the retrieval accuracy. We
demonstrate the superior performance of SMFH on three cross-modality visual
search benchmarks, i.e., the PASCAL-Sentence, Wiki, and NUS-WIDE, with
quantitative comparison to various state-of-the-art methods
|
[{'version': 'v1', 'created': 'Thu, 17 Mar 2016 16:51:44 GMT'}
{'version': 'v2', 'created': 'Sat, 26 Mar 2016 07:00:40 GMT'}
{'version': 'v3', 'created': 'Tue, 29 Mar 2016 05:14:35 GMT'}
{'version': 'v4', 'created': 'Wed, 30 Mar 2016 06:22:36 GMT'}
{'version': 'v5', 'created': 'Sat, 16 Apr 2016 08:51:51 GMT'}]
|
2016-04-19
|
[array(['Liu', 'Hong', ''], dtype=object)
array(['Ji', 'Rongrong', ''], dtype=object)
array(['Wu', 'Yongjian', ''], dtype=object)
array(['Hua', 'Gang', ''], dtype=object)]
|
5,328 |
0901.0703
|
Fuqiang Wang
|
Quan Wang and Fuqiang Wang
|
Identification of flow-background to subtract in jet-like azimuthal
correlation
|
8 pages 1 table 1 figure
|
Phys.Rev.C81:014907,2010
|
10.1103/PhysRevC.81.014907
| null |
nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We derive an analytical form for flow-background to jet-like azimuthal
correlation in a cluster approach. We argue that the elliptic flow parameter to
use in jet-correlation background is that from two-particle method excluding
non-flow correlation unrelated to the reaction plane, but including cross-terms
between cluster correlation and cluster flow. We verify our result with Monte
Carlo simulations. We discuss implications of our finding in the context of
jet-like correlations from STAR and PHENIX.
|
[{'version': 'v1', 'created': 'Tue, 6 Jan 2009 20:52:37 GMT'}
{'version': 'v2', 'created': 'Mon, 19 Oct 2009 05:41:17 GMT'}
{'version': 'v3', 'created': 'Thu, 28 Jan 2010 15:50:34 GMT'}]
|
2010-04-06
|
[array(['Wang', 'Quan', ''], dtype=object)
array(['Wang', 'Fuqiang', ''], dtype=object)]
|
5,329 |
1906.03469
|
Fabrizio Sgrignuoli
|
Simone Zanotto, Fabrizio Sgrignuoli, Sara Nocentini, Daniele Martella,
Camilla Parmigiani, and Diederik S. Wiersma
|
Multichannel remote polarization control enabled by nanostructured
Liquid Crystalline Networks
|
16 pages,8 figures, featured article in ALP
|
ALP, 114,201103, (2019)
|
10.1063/1.5096648
| null |
physics.optics cond-mat.mes-hall cond-mat.mtrl-sci physics.app-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this article we demonstrate that a grating fabricated through nanoscale
volumetric crosslinking of a liquid crystalline polymer enables remote
polarization control over the diffracted channels. This functionality is a
consequence of the responsivity of liquid crystal networks upon light stimuli.
Tuning the photonic response of the device is obtained thanks to both a
refractive index and a shape change of the grating elements induced by a
molecular rearrangement under irradiation. In particular, the material
anisotropy allows for nontrivial polarization state management over multiple
beams. Absence of any liquid component and a time response down to 0.2
milliseconds make our device appealing in the fields of polarimetry and optical
communications.
|
[{'version': 'v1', 'created': 'Sat, 8 Jun 2019 14:39:17 GMT'}]
|
2019-06-11
|
[array(['Zanotto', 'Simone', ''], dtype=object)
array(['Sgrignuoli', 'Fabrizio', ''], dtype=object)
array(['Nocentini', 'Sara', ''], dtype=object)
array(['Martella', 'Daniele', ''], dtype=object)
array(['Parmigiani', 'Camilla', ''], dtype=object)
array(['Wiersma', 'Diederik S.', ''], dtype=object)]
|
5,330 |
2202.09988
|
Ramana Oruganti Dr
|
Devika K, Venkata Ramana Murthy Oruganti, Dwarikanath Mahapatra,
Ramanathan Subramanian
|
Outlier-based Autism Detection using Longitudinal Structural MRI
| null | null |
10.1109/ACCESS.2022.3157613
| null |
eess.IV cs.CV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Diagnosis of Autism Spectrum Disorder (ASD) using clinical evaluation
(cognitive tests) is challenging due to wide variations amongst individuals.
Since no effective treatment exists, prompt and reliable ASD diagnosis can
enable the effective preparation of treatment regimens. This paper proposes
structural Magnetic Resonance Imaging (sMRI)-based ASD diagnosis via an outlier
detection approach. To learn Spatio-temporal patterns in structural brain
connectivity, a Generative Adversarial Network (GAN) is trained exclusively
with sMRI scans of healthy subjects. Given a stack of three adjacent slices as
input, the GAN generator reconstructs the next three adjacent slices; the GAN
discriminator then identifies ASD sMRI scan reconstructions as outliers. This
model is compared against two other baselines -- a simpler UNet and a
sophisticated Self-Attention GAN. Axial, Coronal, and Sagittal sMRI slices from
the multi-site ABIDE II dataset are used for evaluation. Extensive experiments
reveal that our ASD detection framework performs comparably with the
state-of-the-art with far fewer training data. Furthermore, longitudinal data
(two scans per subject over time) achieve 17-28% higher accuracy than
cross-sectional data (one scan per subject). Among other findings, metrics
employed for model training as well as reconstruction loss computation impact
detection performance, and the coronal modality is found to best encode
structural information for ASD detection.
|
[{'version': 'v1', 'created': 'Mon, 21 Feb 2022 04:37:25 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Mar 2022 10:33:18 GMT'}]
|
2022-03-11
|
[array(['K', 'Devika', ''], dtype=object)
array(['Oruganti', 'Venkata Ramana Murthy', ''], dtype=object)
array(['Mahapatra', 'Dwarikanath', ''], dtype=object)
array(['Subramanian', 'Ramanathan', ''], dtype=object)]
|
5,331 |
1210.5121
|
Dmitri Finkelshtein L
|
Dmitri Finkelshtein
|
Towards on convolutions on configuration spaces. I. Spaces of finite
configurations
|
23 pages
|
Ukrainian Mathematical Journal, 2013, 64(11), p. 1752-1775
| null | null |
math.PR math-ph math.FA math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider two types of convolutions ($\ast$ and $\star$) of functions on
spaces of finite configurations (finite subsets of a phase space), and some
their properties are studied. A connection of the $\ast$-convolution with the
convolution of measures on spaces of finite configurations is shown. Properties
of multiplication and derivative operators with respect to the
$\ast$-convolution are discovered. We present also conditions when the
$\ast$-convolution will be positive definite with respect to the
$\star$-convolution.
|
[{'version': 'v1', 'created': 'Thu, 18 Oct 2012 13:46:59 GMT'}]
|
2015-01-27
|
[array(['Finkelshtein', 'Dmitri', ''], dtype=object)]
|
5,332 |
1103.4908
|
Xiaoji Zhou
|
Thibault Vogt, Bo Lu, XinXing Liu, Xu Xu, Xiaoji Zhou, Xuzong Chen
|
Mode competition in superradiant scattering of matter waves
|
6 pages, 6 figures, accepted by PRA
| null |
10.1103/PhysRevA.83.053603
| null |
cond-mat.quant-gas physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Superradiant Rayleigh scattering in a Bose gas released from an optical
lattice is analyzed with incident light pumping at the Bragg angle for resonant
light diffraction. We show competition between superradiance scattering into
the Bragg mode and into end-fire modes clearly leads to suppression of the
latter at even relatively low lattice depths. A quantum light-matter
interaction model is proposed for qualitatively explaining this result.
|
[{'version': 'v1', 'created': 'Fri, 25 Mar 2011 05:35:25 GMT'}]
|
2015-05-27
|
[array(['Vogt', 'Thibault', ''], dtype=object)
array(['Lu', 'Bo', ''], dtype=object)
array(['Liu', 'XinXing', ''], dtype=object)
array(['Xu', 'Xu', ''], dtype=object)
array(['Zhou', 'Xiaoji', ''], dtype=object)
array(['Chen', 'Xuzong', ''], dtype=object)]
|
5,333 |
1612.02496
|
Francisco J Sevilla
|
Francisco J. Sevilla
|
Thermodynamics of low-dimensional trapped Fermi gases
|
To appear in Journal of Thermodynamics
|
Journal of Thermodynamics Volume 2017 (2017), Article ID 3060348,
12 pages
|
10.1155/2017/3060348
| null |
cond-mat.quant-gas cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The effects of low dimensionality on the thermodynamics of a Fermi gas
trapped by isotropic power law potentials are analyzed. Particular attention is
given to different characteristic temperatures that emerge, at low
dimensionality, in the thermodynamic functions of state and in the
thermodynamic susceptibilities (isothermal compressibility and specific heat).
An energy-entropy argument that physically favors the relevance of one of these
characteristic temperatures, namely, the non vanishing temperature at which the
chemical potential reaches the Fermi energy value, is presented. Such an
argument allows to interpret the nonmonotonic dependence of the chemical
potential on temperature, as an indicator of the appearance of a thermodynamic
regime, where the equilibrium states of a trapped Fermi gas are characterized
by larger fluctuations in energy and particle density as is revealed in the
corresponding thermodynamics susceptibilities.
|
[{'version': 'v1', 'created': 'Thu, 8 Dec 2016 00:41:00 GMT'}]
|
2017-01-31
|
[array(['Sevilla', 'Francisco J.', ''], dtype=object)]
|
5,334 |
math/0405518
|
Arash Rastegar
|
Arash Rastegar
|
On Congruences Between Drinfeld Modular Forms
|
24 pages
| null | null | null |
math.NT
| null |
Let ${\mathbf F}_q$ denote a finite field of characteristic $p$ and let $n$
be an effective divisor on the affine line over ${\mathbf F}_q$ and let $v$ be
a point on the affine line outside $n$. In this paper, we get congruences
between ${\mathbb Q}_l$-valued weight two $v$-old Drinfeld modular forms and
$v$-new Drinfeld modular forms of level $vn$. In order to do this, we shall
first construct a cokernel torsion-free injection from a full lattice in the
space of $v$-old Drinfeld modular forms of level $vn$ into a full lattice in
the space of all Drinfeld modular forms of level $vn$. To get this injection we
use ideas introduced by Gekeler and Reversat on uniformization of jacobians of
Drinfeld moduli curves.
|
[{'version': 'v1', 'created': 'Thu, 27 May 2004 06:27:46 GMT'}]
|
2007-05-23
|
[array(['Rastegar', 'Arash', ''], dtype=object)]
|
5,335 |
1403.7634
|
Franz X. Bronold
|
M. Pamperin, F. X. Bronold, and H. Fehske
|
Mixed-valence correlations in charge-transferring atom-surface
collisions
|
9 pages, 10 figures, corrected version to be published in Phys. Scr.
T
|
Phys. Scr. T165, 014008 (2015)
|
10.1088/0031-8949/2015/T165/014008
| null |
cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Motivated by experimental evidence for a mixed-valence state to occur in the
neutralization of strontium ions on gold surfaces we analyze this type of
charge-transferring atom-surface collision from a many-body theoretical point
of view using quantum-kinetic equations together with a pseudo-particle
representation for the electronic configurations of the atomic projectile.
Particular attention is paid to the temperature dependence of the
neutralization probability which--experimentally--seems to signal
mixed-valence-type correlations affecting the charge-transfer between the gold
surface and the strontium projectile. We also investigate the neutralization of
magnesium ions on a gold surface which shows no evidence for a mixed-valence
state. Whereas for magnesium excellent agreement between theory and experiment
could be obtained, for strontium we could not reproduce the experimental data.
Our results indicate mixed-valence correlations to be in principle present, but
for the model mimicking most closely the experimental situation they are not
strong enough to affect the neutralization process quantitatively.
|
[{'version': 'v1', 'created': 'Sat, 29 Mar 2014 13:10:03 GMT'}
{'version': 'v2', 'created': 'Tue, 30 Jun 2015 08:12:04 GMT'}]
|
2015-10-28
|
[array(['Pamperin', 'M.', ''], dtype=object)
array(['Bronold', 'F. X.', ''], dtype=object)
array(['Fehske', 'H.', ''], dtype=object)]
|
5,336 |
2108.11443
|
Max Ilsen
|
Markus Chimani, Max Ilsen and Tilo Wiedera
|
Star-Struck by Fixed Embeddings: Modern Crossing Number Heuristics
|
Appears in the Proceedings of the 29th International Symposium on
Graph Drawing and Network Visualization (GD 2021); 22 pages with 12 figures;
v2: legend in Fig. 5 fixed; v3: higher contrast colors & better plot
readability
| null | null | null |
cs.DM cs.DS math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a thorough experimental evaluation of several crossing
minimization heuristics that are based on the construction and iterative
improvement of a planarization, i.e., a planar representation of a graph with
crossings replaced by dummy vertices. The evaluated heuristics include
variations and combinations of the well-known planarization method, the
recently implemented star reinsertion method, and a new approach proposed
herein: the mixed insertion method. Our experiments reveal the importance of
several implementation details such as the detection of non-simple crossings
(i.e., crossings between adjacent edges or multiple crossings between the same
two edges). The most notable finding, however, is that the insertion of stars
in a fixed embedding setting is not only significantly faster than the
insertion of edges in a variable embedding setting, but also leads to solutions
of higher quality.
|
[{'version': 'v1', 'created': 'Wed, 25 Aug 2021 19:24:54 GMT'}
{'version': 'v2', 'created': 'Mon, 30 Aug 2021 13:40:26 GMT'}
{'version': 'v3', 'created': 'Tue, 5 Oct 2021 12:52:34 GMT'}]
|
2021-10-06
|
[array(['Chimani', 'Markus', ''], dtype=object)
array(['Ilsen', 'Max', ''], dtype=object)
array(['Wiedera', 'Tilo', ''], dtype=object)]
|
5,337 |
2202.06600
|
JunJie Li
|
Junjie Li and Hui Cao
|
Research on Dual Channel News Headline Classification Based on ERNIE
Pre-training Model
| null | null | null | null |
cs.CL cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The classification of news headlines is an important direction in the field
of NLP, and its data has the characteristics of compactness, uniqueness and
various forms. Aiming at the problem that the traditional neural network model
cannot adequately capture the underlying feature information of the data and
cannot jointly extract key global features and deep local features, a
dual-channel network model DC-EBAD based on the ERNIE pre-training model is
proposed. Use ERNIE to extract the lexical, semantic and contextual feature
information at the bottom of the text, generate dynamic word vector
representations fused with context, and then use the BiLSTM-AT network channel
to secondary extract the global features of the data and use the attention
mechanism to give key parts higher The weight of the DPCNN channel is used to
overcome the long-distance text dependence problem and obtain deep local
features. The local and global feature vectors are spliced, and finally passed
to the fully connected layer, and the final classification result is output
through Softmax. The experimental results show that the proposed model improves
the accuracy, precision and F1-score of news headline classification compared
with the traditional neural network model and the single-channel model under
the same conditions. It can be seen that it can perform well in the
multi-classification application of news headline text under large data volume.
|
[{'version': 'v1', 'created': 'Mon, 14 Feb 2022 10:44:12 GMT'}]
|
2022-02-15
|
[array(['Li', 'Junjie', ''], dtype=object)
array(['Cao', 'Hui', ''], dtype=object)]
|
5,338 |
2202.12850
|
Jiakang Bao
|
Jiakang Bao, Yang-Hui He, Ali Zahabi
|
Crystal Melting, BPS Quivers and Plethystics
|
43 pages; v2, v3: minor corrections, references added; v4: minor
corrections
|
JHEP06(2022)016
|
10.1007/JHEP06(2022)016
|
LIMS-2022-010
|
hep-th math-ph math.AG math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the refined and unrefined crystal/BPS partition functions of
D6-D2-D0 brane bound states for all toric Calabi-Yau threefolds without compact
4-cycles and some non-toric examples. They can be written as products of
(generalized) MacMahon functions. We check our expressions and use them as
vacuum characters to study the gluings. We then consider the wall crossings and
discuss possible crystal descriptions for different chambers. We also express
the partition functions in terms of plethystic exponentials. For $\mathbb{C}^3$
and tripled affine quivers, we find their connections to nilpotent Kac
polynomials. Similarly, the partition functions of D4-D2-D0 brane bound states
can be obtained by replacing the (generalized) MacMahon functions with the
inverse of (generalized) Euler functions.
|
[{'version': 'v1', 'created': 'Fri, 25 Feb 2022 17:56:23 GMT'}
{'version': 'v2', 'created': 'Thu, 3 Mar 2022 15:30:41 GMT'}
{'version': 'v3', 'created': 'Fri, 4 Mar 2022 14:36:37 GMT'}
{'version': 'v4', 'created': 'Mon, 9 May 2022 07:06:07 GMT'}]
|
2022-06-08
|
[array(['Bao', 'Jiakang', ''], dtype=object)
array(['He', 'Yang-Hui', ''], dtype=object)
array(['Zahabi', 'Ali', ''], dtype=object)]
|
5,339 |
1705.06169
|
O\u{g}ul Esen
|
O\u{g}ul Esen, Partha Guha
|
On Time-dependent Hamiltonian Realizations of Planar and Nonplanar
Systems
| null | null |
10.1016/j.geomphys.2018.01.024
| null |
math.DG math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we elucidate the key role played by the cosymplectic geometry
in the theory of time dependent Hamiltonian systems. In particular, we
generalize the cosymplectic structures to time-dependent Nambu-Poisson
Hamiltonian systems and corresponding Jacobi's last multiplier for 3D systems.
We illustrate our constructions with various examples.
|
[{'version': 'v1', 'created': 'Wed, 17 May 2017 14:06:42 GMT'}
{'version': 'v2', 'created': 'Mon, 4 Dec 2017 08:12:35 GMT'}]
|
2018-03-14
|
[array(['Esen', 'Oğul', ''], dtype=object)
array(['Guha', 'Partha', ''], dtype=object)]
|
5,340 |
cond-mat/0107475
|
Paolo Sibani
|
Jesper Dall and Paolo Sibani (SDU-Odense Universitet)
|
Faster Monte Carlo Simulations at Low Temperatures. The Waiting Time
Method
|
14 pages, 5 figures, LaTeX
|
Computer Physics Communication 141 (2001) 260-267
|
10.1016/S0010-4655(01)00412-X
| null |
cond-mat.stat-mech
| null |
We discuss a rejectionless global optimization technique which, while being
technically similar to the recently introduced method of Extremal Optimization,
still relies on a physical analogy with a thermalizing system. Our waiting time
method (WTM) is mathematically equivalent to the usual Metropolis algorithm,
but considerably more efficient at low temperatures. The WTM can be used at
constant temperature or it can be combined with annealing techniques. It is
especially well suited for studying the low temperature relaxation of complex
systems as glasses and spin glasses. In the paper we describe the method and
test it on a spin glass example by comparing its performance to Extremal
Optimization.
|
[{'version': 'v1', 'created': 'Mon, 23 Jul 2001 15:27:52 GMT'}]
|
2009-11-07
|
[array(['Dall', 'Jesper', '', 'SDU-Odense Universitet'], dtype=object)
array(['Sibani', 'Paolo', '', 'SDU-Odense Universitet'], dtype=object)]
|
5,341 |
1909.00534
|
Kanat Tulenov
|
D. Dauitbek and K.S. Tulenov
|
Conditional expectation on non-commutative $H^{(r,s)}_{p}(\mathcal
A;\ell_{\infty})$ and $H_{p}(\mathcal A;\ell_{1})$ spaces : semifinite case
| null | null |
10.1007/s43034-019-00042-z
| null |
math.OA math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we investigate the conditional expectation on the
non-commutative $H^{(r,s)}_{p}(\mathcal A;\ell_{\infty})$ and $H_{p}(\mathcal
A;\ell_{1})$ spaces associated with semifinite subdiagonal algebra, and prove
the contractibility of the underlying conditional expectation on these spaces.
|
[{'version': 'v1', 'created': 'Mon, 2 Sep 2019 04:18:26 GMT'}]
|
2020-02-27
|
[array(['Dauitbek', 'D.', ''], dtype=object)
array(['Tulenov', 'K. S.', ''], dtype=object)]
|
5,342 |
1611.05159
|
Zhuang Niu
|
George A. Elliott and Zhuang Niu
|
The classification of simple separable KK-contractible C*-algebras with
finite nuclear dimension
|
46 pages
| null | null | null |
math.OA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The class of simple separable KK-contractible (KK-equivalent to $\{0\}$)
C*-algebras which have finite nuclear dimension is shown to classified by the
Elliott invariant. In particular, the class of C*-algebras $A\otimes \mathcal
W$ is classifiable, where $A$ is a simple separable C*-algebra with finite
nuclear dimension and $\mathcal W$ is the simple inductive limit of Razak
algebras with unique trace, which is bounded.
|
[{'version': 'v1', 'created': 'Wed, 16 Nov 2016 06:23:01 GMT'}]
|
2016-11-17
|
[array(['Elliott', 'George A.', ''], dtype=object)
array(['Niu', 'Zhuang', ''], dtype=object)]
|
5,343 |
1603.06542
|
Vassil Roussev
|
Vassil Roussev, Andres Barreto, Irfan Ahmed
|
Forensic Acquisition of Cloud Drives
|
20 pages
| null | null | null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Cloud computing and cloud storage services, in particular, pose a new
challenge to digital forensic investigations. Currently, evidence acquisition
for such services still follows the traditional method of collecting artifacts
on a client device. This approach requires labor-intensive reverse engineering
efforts, and ultimately results in an acquisition that is inherently
incomplete. Specifically, it makes the incorrect assumption that all storage
content for an account is fully replicated on the client; further, there are no
means to acquire historical data in the form of document revisions, nor is
there a way to acquire cloud-native artifacts, such as Google Docs.
In this work, we introduce the concept of API-based evidence acquisition for
cloud services, which addresses these concerns by utilizing the officially
supported API of the service. To demonstrate the utility of this approach, we
present a proof-of-concept acquisition tool, kumodd, which can acquire evidence
from four major cloud drive providers: Google Drive, Microsoft OneDrive,
Dropbox, and Box. The implementation provides both command-line and web user
interfaces, and can be readily incorporated into established forensic
processes.
|
[{'version': 'v1', 'created': 'Tue, 26 Jan 2016 06:07:39 GMT'}]
|
2016-03-22
|
[array(['Roussev', 'Vassil', ''], dtype=object)
array(['Barreto', 'Andres', ''], dtype=object)
array(['Ahmed', 'Irfan', ''], dtype=object)]
|
5,344 |
1307.8202
|
EPTCS
|
Steffen van Bakel (Imperial College London, London, England), Franco
Barbanera (Universita` di Catania, Catania, Italy), Ugo de'Liguoro
(Universita` di Torino, Torino, Italy)
|
Characterisation of Strongly Normalising lambda-mu-Terms
|
In Proceedings ITRS 2012, arXiv:1307.7849
|
EPTCS 121, 2013, pp. 1-17
|
10.4204/EPTCS.121.1
| null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We provide a characterisation of strongly normalising terms of the
lambda-mu-calculus by means of a type system that uses intersection and product
types. The presence of the latter and a restricted use of the type omega enable
us to represent the particular notion of continuation used in the literature
for the definition of semantics for the lambda-mu-calculus. This makes it
possible to lift the well-known characterisation property for
strongly-normalising lambda-terms - that uses intersection types - to the
lambda-mu-calculus. From this result an alternative proof of strong
normalisation for terms typeable in Parigot's propositional logical system
follows, by means of an interpretation of that system into ours.
|
[{'version': 'v1', 'created': 'Wed, 31 Jul 2013 03:24:08 GMT'}]
|
2013-08-01
|
[array(['van Bakel', 'Steffen', '',
'Imperial College London, London, England'], dtype=object)
array(['Barbanera', 'Franco', '',
'Universita` di Catania, Catania, Italy'], dtype=object)
array(["de'Liguoro", 'Ugo', '', 'Universita` di Torino, Torino, Italy'],
dtype=object) ]
|
5,345 |
2109.11642
|
Effrosyni Papanastasiou
|
Effrosyni Papanastasiou, Anastasios Giovanidis
|
Bayesian Inference of a Social Graph with Trace Feasibility Guarantees
|
Proceedings of the 2021 IEEE/ACM International Conference on Advances
in Social Networks Analysis and Mining (ASONAM), Nov 2021, The Hague,
Netherlands
|
ASONAM '21: Proceedings of the 2021 IEEE/ACM International
Conference on Advances in Social Networks Analysis and Mining - November 2021
|
10.1145/3487351.3488279
| null |
cs.SI cs.NI
|
http://creativecommons.org/licenses/by/4.0/
|
Network inference is the process of deciding what is the true unknown graph
underlying a set of interactions between nodes. There is a vast literature on
the subject, but most known methods have an important drawback: the inferred
graph is not guaranteed to explain every interaction from the input trace. We
consider this an important issue since such inferred graph cannot be used as
input for applications that require a reliable estimate of the true graph. On
the other hand, a graph having trace feasibility guarantees can help us better
understand the true (hidden) interactions that may have taken place between
nodes of interest. The inference of such graph is the goal of this paper.
Firstly, given an activity log from a social network, we introduce a set of
constraints that take into consideration all the hidden paths that are possible
between the nodes of the trace, given their timestamps of interaction. Then, we
develop a nontrivial modification of the Expectation-Maximization algorithm by
Newman [1], that we call Constrained-EM, which incorporates the constraints and
a set of auxiliary variables into the inference process to guide it towards the
feasibility of the trace. Experimental results on real-world data from Twitter
confirm that Constrained-EM generates a posterior distribution of graphs that
explains all the events observed in the trace while presenting the desired
properties of a scale-free, small-world graph. Our method also outperforms
established methods in terms of feasibility and quality of the inferred graph.
|
[{'version': 'v1', 'created': 'Thu, 23 Sep 2021 20:48:19 GMT'}]
|
2023-02-03
|
[array(['Papanastasiou', 'Effrosyni', ''], dtype=object)
array(['Giovanidis', 'Anastasios', ''], dtype=object)]
|
5,346 |
1911.11532
|
Alexey Slunyaev
|
Alexey Slunyaev
|
Effects of coherent dynamics of stochastic deep-water waves
| null |
Phys. Rev. E 101, 062214 (2020)
|
10.1103/PhysRevE.101.062214
| null |
nlin.PS physics.ao-ph physics.flu-dyn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A method of windowed spatio-temporal spectral filtering is proposed to
segregate different nonlinear wave components, and to calculate the surface of
free waves. The dynamic kurtosis (i.e., produced by the free wave component) is
shown able to contribute essentially to the abnormally large values of the
surface displacement kurtosis, according to the direct numerical simulations of
realistic sea waves. In this situation the free wave stochastic dynamics is
strongly non-Gaussian, and the kinetic approach is inapplicable. Traces of
coherent wave patterns are found in the Fourier transform of the directional
irregular sea waves; they may form 'jets' in the Fourier domain which strongly
violate the classic dispersion relation.
|
[{'version': 'v1', 'created': 'Tue, 26 Nov 2019 13:51:32 GMT'}
{'version': 'v2', 'created': 'Thu, 23 Apr 2020 15:44:38 GMT'}]
|
2020-07-01
|
[array(['Slunyaev', 'Alexey', ''], dtype=object)]
|
5,347 |
2002.06485
|
Fan Yang
|
Yu-Bo Liu, Juan-Juan Hao, Yongyou Zhang, Ye Cao, Wei-Qiang Chen, Fan
Yang
|
Cooper instability and superconductivity on the Penrose lattice
|
11 pages, 6 figures
|
Sci. China Phys. Mech. Astron. 65, 287411 (2022)
|
10.1007/s11433-021-1877-5
| null |
cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Bulk superconductivity (SC) has recently been observed in the Al-Zn-Mg
quasicrystal (QC). To settle several fundamental issues of the SC on the QC, we
use an attractive Hubbard model to perform a systematic study on the Penrose
lattice. The first issue is the Cooper instability of the QC, i.e., no Fermi
surface under an infinitesimal attractive interaction. Starting from the
two-electron problem outside the filled Fermi-sea, we analytically prove that
an infinitesimal Hubbard attraction can lead to the Cooper instability as long
as the density of state is nonzero at the Fermi level, which provides the basis
of the SC on the QC. Our numerical results yield that the Cooper pairing always
takes place between the two time-reversal states, satisfying the Anderson's
theorem. On this theorem, we perform a mean-field (MF) study at both zero and
finite temperatures. The MF study also shows that an arbitrarily weak
attraction can lead to the pairing order, with the resulted pairing state being
well described by the BCS theory and the thermal dynamic behaviors being well
consistent with experimental results. The second issue is about the superfluid
density on the QC without translational symmetry. It's clarified that although
the normal state of the system locates at the critical point of the
metal-insulator transition, the pairing state exhibits real SC, carrying finite
superfluid density that can be verified by the Meissner effect, consistent with
experiment also. These revealed properties of the SC on the Penrose lattice are
universal for all QCs.
|
[{'version': 'v1', 'created': 'Sun, 16 Feb 2020 01:26:07 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Aug 2020 03:51:20 GMT'}
{'version': 'v3', 'created': 'Fri, 29 Jul 2022 03:59:02 GMT'}]
|
2022-08-01
|
[array(['Liu', 'Yu-Bo', ''], dtype=object)
array(['Hao', 'Juan-Juan', ''], dtype=object)
array(['Zhang', 'Yongyou', ''], dtype=object)
array(['Cao', 'Ye', ''], dtype=object)
array(['Chen', 'Wei-Qiang', ''], dtype=object)
array(['Yang', 'Fan', ''], dtype=object)]
|
5,348 |
nucl-th/0509094
|
Ryoichi Seki
|
Ryoichi Seki and U. van Kolck
|
Effective Field Theory of Nucleon-Nucleon Scattering on Large Discrete
Lattices
|
24pages, 1 figure
|
Phys.Rev.C73:044006,2006
|
10.1103/PhysRevC.73.044006
| null |
nucl-th
| null |
Nuclear effective field theory is applied to the effective range expansion of
S-wave nucleon-nucleon scattering on a discrete lattice. Lattice regularization
is demonstrated to yield the effective range expansion in the same way as in
the usual continuous open space. The relation between the effective range
parameters and the potential parameters is presented in the limit of a large
lattice.
|
[{'version': 'v1', 'created': 'Thu, 29 Sep 2005 22:40:20 GMT'}
{'version': 'v2', 'created': 'Thu, 3 Nov 2005 08:13:14 GMT'}]
|
2011-05-12
|
[array(['Seki', 'Ryoichi', ''], dtype=object)
array(['van Kolck', 'U.', ''], dtype=object)]
|
5,349 |
1705.01282
|
Antonio Parisi
|
Antonio Parisi and Brunero Liseo
|
Objective Bayesian analysis for the multivariate skew-t model
| null | null | null | null |
stat.ME stat.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We perform a Bayesian analysis of the p-variate skew-t model, providing a new
parameterization, a set of non-informative priors and a sampler specifically
designed to explore the posterior density of the model parameters. Extensions,
such as the multivariate regression model with skewed errors and the stochastic
frontiers model, are easily accommodated. A novelty introduced in the paper is
given by the extension of the bivariate skew-normal model given in Liseo &
Parisi (2013) to a more realistic p-variate skew-t model. We also introduce the
R package mvst, which allows to estimate the multivariate skew-t model.
|
[{'version': 'v1', 'created': 'Wed, 3 May 2017 07:29:10 GMT'}]
|
2017-05-04
|
[array(['Parisi', 'Antonio', ''], dtype=object)
array(['Liseo', 'Brunero', ''], dtype=object)]
|
5,350 |
hep-ex/0305096
|
Serguei Kolos
|
S.Kolos, I.Alexandrov, A.Amorim, M.Barczyk, E.Badescu,
D.Burckhart-Chromek, M.Caprini, J.Da Silva Conceicao, M.Dobson, J.Flammer,
R.Hart, R.Jones, A.Kazarov, D.Klose, V.Kotov, D.Liko, J.Lima, L.Lucio,
L.Mapelli, M.Mineev, L.Pedro, Yu.Ryabov, I.Soloviev, H.Wolters
|
Online Monitoring software framework in the ATLAS experiment
|
Talk from the 2003 Computing in High Energy and Nuclear Physics
(CHEP03), La Jolla, Ca, USA, March 2003, 6 pages, PDF. PSN THGT003
| null | null | null |
hep-ex
| null |
A fast, efficient and comprehensive monitoring system is a vital part of any
HEP experiment. This paper describes the software framework that will be used
during ATLAS data taking to monitor the state of the data acquisition and the
quality of physics data in the experiment. The framework has been implemented
by the Online Software group of the ATLAS Trigger&Data Acquisition (TDAQ)
project and has already been used for several years in the ATLAS test beams at
CERN. The inter-process communication in the framework is implemented via
CORBA, which provides portability between different operating systems and
programming languages. This paper will describe the design and the most
important aspects of the online monitoring framework implementation. It will
also show some test results, which indicate the performance and scalability of
the current implementation.
|
[{'version': 'v1', 'created': 'Wed, 28 May 2003 16:26:14 GMT'}
{'version': 'v2', 'created': 'Fri, 30 May 2003 15:06:22 GMT'}]
|
2007-05-23
|
[array(['Kolos', 'S.', ''], dtype=object)
array(['Alexandrov', 'I.', ''], dtype=object)
array(['Amorim', 'A.', ''], dtype=object)
array(['Barczyk', 'M.', ''], dtype=object)
array(['Badescu', 'E.', ''], dtype=object)
array(['Burckhart-Chromek', 'D.', ''], dtype=object)
array(['Caprini', 'M.', ''], dtype=object)
array(['Conceicao', 'J. Da Silva', ''], dtype=object)
array(['Dobson', 'M.', ''], dtype=object)
array(['Flammer', 'J.', ''], dtype=object)
array(['Hart', 'R.', ''], dtype=object)
array(['Jones', 'R.', ''], dtype=object)
array(['Kazarov', 'A.', ''], dtype=object)
array(['Klose', 'D.', ''], dtype=object)
array(['Kotov', 'V.', ''], dtype=object)
array(['Liko', 'D.', ''], dtype=object)
array(['Lima', 'J.', ''], dtype=object)
array(['Lucio', 'L.', ''], dtype=object)
array(['Mapelli', 'L.', ''], dtype=object)
array(['Mineev', 'M.', ''], dtype=object)
array(['Pedro', 'L.', ''], dtype=object)
array(['Ryabov', 'Yu.', ''], dtype=object)
array(['Soloviev', 'I.', ''], dtype=object)
array(['Wolters', 'H.', ''], dtype=object)]
|
5,351 |
nucl-th/0311023
|
Aurel Bulgac
|
A. Bulgac, P.H. Heenen, P. Magierski, A. Wirzba and Y. Yu
|
Unexpected goings-on in the structure of a neutron star crust
|
6 pages, invited talk presented by AB at Tours 2003 Symposium on
Nuclear Physics, August 26-29,Tours, France
|
AIPConf.Proc.704:483-487,2004
|
10.1063/1.1737144
| null |
nucl-th
| null |
We present a brief account of two phenomena taking place in a neutron star
crust: the Fermionic Casimir effect and the major density depletion of the
cores of the superfluid neutron vortices.
|
[{'version': 'v1', 'created': 'Fri, 7 Nov 2003 01:19:13 GMT'}]
|
2009-09-29
|
[array(['Bulgac', 'A.', ''], dtype=object)
array(['Heenen', 'P. H.', ''], dtype=object)
array(['Magierski', 'P.', ''], dtype=object)
array(['Wirzba', 'A.', ''], dtype=object)
array(['Yu', 'Y.', ''], dtype=object)]
|
5,352 |
1709.05250
|
Sergey Skipetrov E
|
Y.M. Beltukov and S.E. Skipetrov
|
Finite-time scaling at the Anderson transition for vibrations in solids
|
Revised manuscript. 8 pages, 5 figures
|
Phys. Rev. B 96, 174209 (2017)
|
10.1103/PhysRevB.96.174209
| null |
cond-mat.dis-nn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A model in which a three-dimensional elastic medium is represented by a
network of identical masses connected by springs of random strengths and
allowed to vibrate only along a selected axis of the reference frame, exhibits
an Anderson localization transition. To study this transition, we assume that
the dynamical matrix of the network is given by a product of a sparse random
matrix with real, independent, Gaussian-distributed non-zero entries and its
transpose. A finite-time scaling analysis of system's response to an initial
excitation allows us to estimate the critical parameters of the localization
transition. The critical exponent is found to be $\nu = 1.57 \pm 0.02$ in
agreement with previous studies of Anderson transition belonging to the
three-dimensional orthogonal universality class.
|
[{'version': 'v1', 'created': 'Fri, 15 Sep 2017 15:00:55 GMT'}
{'version': 'v2', 'created': 'Wed, 8 Nov 2017 14:55:24 GMT'}]
|
2017-12-04
|
[array(['Beltukov', 'Y. M.', ''], dtype=object)
array(['Skipetrov', 'S. E.', ''], dtype=object)]
|
5,353 |
0912.4032
|
Romain Demazeux
|
Romain Demazeux (LML)
|
Weighted composition operators as Daugavet centers
|
18 pages
| null | null | null |
math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the norm identity $\|uC_\phi + T\| = \|u\|_\infty + \|T\|$ for
classes of operators on $C(S)$, where $S$ is a compact Hausdorff space without
isolated point, and characterize those weighted composition operators which
satisfy this equation for every weakly compact operator $T : C(S)\to C(S)$. We
also give a characterization of such weighted composition operator acting on
the disk algebra $A(D).$
|
[{'version': 'v1', 'created': 'Sun, 20 Dec 2009 17:30:06 GMT'}]
|
2009-12-22
|
[array(['Demazeux', 'Romain', '', 'LML'], dtype=object)]
|
5,354 |
hep-ph/0202197
|
Takehisa Fujita
|
Tomoko ASAGA and Takehisa Fujita (Nihon U.)
|
Possible Suppression of Neutron EDM
|
9 pages, Latex
| null | null | null |
hep-ph
| null |
Employing generalized Schiff's transformation on electric dipole moments
(EDM) in quantum field theory, we show that the chromoelectric EDM lagrangian
density is transformed into the electric EDM term with a new coefficient. Under
the new constraint on the EDM operators, the neutron EDM can be described by a
unique combination of electric EDM $d_f$ and chromoelectric EDM ${\tilde d}_f $
of quarks. If the special relation of
$\displaystyle{d_f={e_f\over{2g_s}}{\tilde d}_f}$ holds, then the neutron EDM
is suppressed significantly.
|
[{'version': 'v1', 'created': 'Thu, 21 Feb 2002 12:31:56 GMT'}]
|
2007-05-23
|
[array(['ASAGA', 'Tomoko', '', 'Nihon U.'], dtype=object)
array(['Fujita', 'Takehisa', '', 'Nihon U.'], dtype=object)]
|
5,355 |
1010.6294
|
Jose O\~norbe
|
R. Dom\'inguez-Tenreiro, J. O\~norbe, F. Mart\'inez-Serrano and A.
Serna
|
Large-Scale Gas Dynamics in the Adhesion Model: Implications for the
Two-Phase Massive Galaxy Formation Scenario
|
Aceppted to MNRAS. 28 pages, 8 Figures. Minor changes to match the
published version
|
MNRAS 413 (2011) 3022
|
10.1111/j.1365-2966.2011.18379.x
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The mass assembly and star formation histories of massive galaxies identified
at low redshift z in different cosmological hydrodynamical simulations, have
been studied through a detailed follow-up backwards in time of their
constituent mass elements (sampled by particles) of different types. Then, the
configurations they depict at progressively higher zs have been analysed.
The analyses show that these histories share common generic patterns,
irrespective of particular circumstances. In any case, the results we have
found are different depending on the particle type. The most outstanding
differences follow. We have found that by z ~ 3.5 - 6, mass elements identified
as stellar particles at z=0 exhibit a gaseous cosmic-web-like morphology with
scales of ~ 1 physical Mpc, where the densest mass elements have already turned
into stars by z ~ 6. These settings are in fact the densest pieces of the
cosmic web, where no hot particles show up, and dynamically organized as a
hierarchy of flow convergence regions, that is, attraction basins for mass
flows. On the other hand, mass elements identified at the diffuse hot coronae
surrounding massive galaxies at z = 0, do not display a clear web-like
morphology at any z. Diffuse gas is heated when flow convergence regions go
through contractive deformations, and most of it keeps hot and with low density
along the evolution.
To shed light on the physical foundations of the behaviour our analyses show
up, as well as on their possible observational implications, these patterns
have been confronted with some generic properties of singular flows as
described by the adhesion model. We have found that these common patterns
simulations show can be interpreted as a consequence of flow properties, that,
moreover, could explain different generic observational results on massive
galaxies or their samples. We briefly discuss some of them.[Abridged]
|
[{'version': 'v1', 'created': 'Fri, 29 Oct 2010 19:02:51 GMT'}
{'version': 'v2', 'created': 'Sat, 18 Dec 2010 04:42:59 GMT'}
{'version': 'v3', 'created': 'Wed, 23 Mar 2011 06:10:10 GMT'}]
|
2012-01-13
|
[array(['Domínguez-Tenreiro', 'R.', ''], dtype=object)
array(['Oñorbe', 'J.', ''], dtype=object)
array(['Martínez-Serrano', 'F.', ''], dtype=object)
array(['Serna', 'A.', ''], dtype=object)]
|
5,356 |
1604.06714
|
GyongIl Ryang
|
YongChol Sin, HyeGyong Sin, GyongIl Ryang
|
Study on Neural Immune PD Type Tracking Control for DC Actuating
Mechanism
|
6 pages, 6 figures
| null | null | null |
cs.SY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Artificial Immune Systems(AIS) have been widely used in different fields,
such as control, robotics, computer science and multi-agent systems. In this
paper is proposed a new approach of neural immune PD type tracking control
combining artificial immune control with neural network. It is assumed that the
output of the helper T-cell is concerned with not only the error of system but
also its changing rate, while the output of suppressor T-cell is unknown
nonlinear function with respect to the amount and changing rate of antigens and
the changing rate of antibodies, which is approximated by the output of neural
network. From this, we derive neural immune PD type control law and apply it to
the trajectory tracking of DC actuating mechanism. The validity of the proposed
method is verified by simulation and the simulation results show that this
method can follow the desired trajectory more rapidly and more accurately
compared to the previous method.
|
[{'version': 'v1', 'created': 'Wed, 20 Apr 2016 02:55:32 GMT'}]
|
2016-04-25
|
[array(['Sin', 'YongChol', ''], dtype=object)
array(['Sin', 'HyeGyong', ''], dtype=object)
array(['Ryang', 'GyongIl', ''], dtype=object)]
|
5,357 |
astro-ph/0510443
|
David H. Lyth
|
David H. Lyth
|
Generating the curvature perturbation at the end of inflation
|
5 pages. v3: as it will appear in JCAP
|
JCAP 0511:006,2005
|
10.1088/1475-7516/2005/11/006
| null |
astro-ph hep-ph hep-th
| null |
The dominant contribution to the primordial curvature perturbation may be
generated at the end of inflation. Taking the end of inflation to be sudden,
formulas are presented for the spectrum, spectral tilt and non-gaussianity.
They are evaluated for a minimal extension of the original hybrid inflation
model.
|
[{'version': 'v1', 'created': 'Fri, 14 Oct 2005 16:12:25 GMT'}
{'version': 'v2', 'created': 'Tue, 18 Oct 2005 11:14:44 GMT'}
{'version': 'v3', 'created': 'Wed, 9 Nov 2005 17:38:02 GMT'}]
|
2009-11-13
|
[array(['Lyth', 'David H.', ''], dtype=object)]
|
5,358 |
1910.14549
|
Sang Sang Tan
|
Sang-Sang Tan (1), Jin-Cheon Na (1) ((1) Nanyang Technological
University, Singapore)
|
Positional Attention-based Frame Identification with BERT: A Deep
Learning Approach to Target Disambiguation and Semantic Frame Selection
|
19 pages, 7 figures, uses basic.sty
| null | null | null |
cs.CL cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Semantic parsing is the task of transforming sentences from natural language
into formal representations of predicate-argument structures. Under this
research area, frame-semantic parsing has attracted much interest. This parsing
approach leverages the lexical information defined in FrameNet to associate
marked predicates or targets with semantic frames, thereby assigning semantic
roles to sentence components based on pre-specified frame elements in FrameNet.
In this paper, a deep neural network architecture known as Positional
Attention-based Frame Identification with BERT (PAFIBERT) is presented as a
solution to the frame identification subtask in frame-semantic parsing.
Although the importance of this subtask is well-established, prior research has
yet to find a robust solution that works satisfactorily for both in-domain and
out-of-domain data. This study thus set out to improve frame identification in
light of recent advancements of language modeling and transfer learning in
natural language processing. The proposed method is partially empowered by
BERT, a pre-trained language model that excels at capturing contextual
information in texts. By combining the language representation power of BERT
with a position-based attention mechanism, PAFIBERT is able to attend to
target-specific contexts in sentences for disambiguating targets and
associating them with the most suitable semantic frames. Under various
experimental settings, PAFIBERT outperformed existing solutions by a
significant margin, achieving new state-of-the-art results for both in-domain
and out-of-domain benchmark test sets.
|
[{'version': 'v1', 'created': 'Thu, 31 Oct 2019 15:51:04 GMT'}]
|
2019-11-01
|
[array(['Tan', 'Sang-Sang', ''], dtype=object)
array(['Na', 'Jin-Cheon', ''], dtype=object)]
|
5,359 |
1308.0551
|
Jaeyun Sung
|
Jaeyun Sung, Pan-Jun Kim, Shuyi Ma, Cory C. Funk, Andrew T. Magis,
Yuliang Wang, Leroy Hood, Donald Geman, and Nathan D. Price
|
Multi-study Integration of Brain Cancer Transcriptomes Reveals
Organ-Level Molecular Signatures
|
27 pages of main text including 4 figures and 4 tables. 32 pages of
supplementary material (Text, Figures, and Tables)
|
PLoS Comput Biol 9(7): e1003148 (2013)
|
10.1371/journal.pcbi.1003148
| null |
q-bio.QM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We utilized abundant transcriptomic data for the primary classes of brain
cancers to study the feasibility of separating all of these diseases
simultaneously based on molecular data alone. These signatures were based on a
new method reported herein that resulted in a brain cancer marker panel of 44
unique genes. Many of these genes have established relevance to the brain
cancers examined, with others having known roles in cancer biology. Analyses on
large-scale data from multiple sources must deal with significant challenges
associated with heterogeneity between different published studies, for it was
observed that the variation among individual studies often had a larger effect
on the transcriptome than did phenotype differences, as is typical. We found
that learning signatures across multiple datasets greatly enhanced
reproducibility and accuracy in predictive performance on truly independent
validation sets, even when keeping the size of the training set the same. This
was most likely due to the meta-signature encompassing more of the
heterogeneity across different sources and conditions, while amplifying signal
from the repeated global characteristics of the phenotype. When molecular
signatures of brain cancers were constructed from all currently available
microarray data, 90 percent phenotype prediction accuracy, or the accuracy of
identifying a particular brain cancer from the background of all phenotypes,
was found. Looking forward, we discuss our approach in the context of the
eventual development of organ-specific molecular signatures from peripheral
fluids such as the blood.
|
[{'version': 'v1', 'created': 'Fri, 2 Aug 2013 16:53:23 GMT'}]
|
2013-08-05
|
[array(['Sung', 'Jaeyun', ''], dtype=object)
array(['Kim', 'Pan-Jun', ''], dtype=object)
array(['Ma', 'Shuyi', ''], dtype=object)
array(['Funk', 'Cory C.', ''], dtype=object)
array(['Magis', 'Andrew T.', ''], dtype=object)
array(['Wang', 'Yuliang', ''], dtype=object)
array(['Hood', 'Leroy', ''], dtype=object)
array(['Geman', 'Donald', ''], dtype=object)
array(['Price', 'Nathan D.', ''], dtype=object)]
|
5,360 |
hep-lat/0110071
|
Simon Catterall
|
S. Catterall, S. Karamov
|
A Two-Dimensional Lattice Model with Exact Supersymmetry
|
Lattice2001(higgssusy)
|
Nucl.Phys.Proc.Suppl. 106 (2002) 935-937
| null | null |
hep-lat
| null |
Starting from a simple discrete model which exhibits a supersymmetric
invariance we construct a local, interacting, two-dimensional Euclidean lattice
theory which also admits an exact supersymmetry. This model is shown to
correspond to the Wess-Zumino model with extended N=2 supersymmetry in the
continuum. We have performed dynamical fermion simulations to check the
spectrum and supersymmetric Ward identities and find good agreement with
theory.
|
[{'version': 'v1', 'created': 'Fri, 12 Oct 2001 22:18:18 GMT'}]
|
2007-05-23
|
[array(['Catterall', 'S.', ''], dtype=object)
array(['Karamov', 'S.', ''], dtype=object)]
|
5,361 |
2301.01751
|
Andreas Stuhlm\"uller
|
Justin Reppert, Ben Rachbach, Charlie George, Luke Stebbing, Jungwon
Byun, Maggie Appleton, Andreas Stuhlm\"uller
|
Iterated Decomposition: Improving Science Q&A by Supervising Reasoning
Processes
| null | null | null | null |
cs.CL cs.AI cs.HC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Language models (LMs) can perform complex reasoning either end-to-end, with
hidden latent state, or compositionally, with transparent intermediate state.
Composition offers benefits for interpretability and safety, but may need
workflow support and infrastructure to remain competitive. We describe iterated
decomposition, a human-in-the-loop workflow for developing and refining
compositional LM programs. We improve the performance of compositions by
zooming in on failing components and refining them through decomposition,
additional context, chain of thought, etc. To support this workflow, we develop
ICE, an open-source tool for visualizing the execution traces of LM programs.
We apply iterated decomposition to three real-world tasks and improve the
accuracy of LM programs over less compositional baselines: describing the
placebo used in a randomized controlled trial (25% to 65%), evaluating
participant adherence to a medical intervention (53% to 70%), and answering NLP
questions on the Qasper dataset (38% to 69%). These applications serve as case
studies for a workflow that, if automated, could keep ML systems interpretable
and safe even as they scale to increasingly complex tasks.
|
[{'version': 'v1', 'created': 'Wed, 4 Jan 2023 18:34:25 GMT'}
{'version': 'v2', 'created': 'Thu, 5 Jan 2023 01:35:43 GMT'}]
|
2023-01-06
|
[array(['Reppert', 'Justin', ''], dtype=object)
array(['Rachbach', 'Ben', ''], dtype=object)
array(['George', 'Charlie', ''], dtype=object)
array(['Stebbing', 'Luke', ''], dtype=object)
array(['Byun', 'Jungwon', ''], dtype=object)
array(['Appleton', 'Maggie', ''], dtype=object)
array(['Stuhlmüller', 'Andreas', ''], dtype=object)]
|
5,362 |
2110.10581
|
Christiane Quesne
|
C. Quesne
|
Generalized semiconfined harmonic oscillator model with a
position-dependent effective mas
|
13 pages, 1 figure; added comments and references; published version
|
Eur. Phys. J. Plus (2022) 137:225
|
10.1140/epjp/s13360-022-02444-w
| null |
quant-ph math-ph math.MP
|
http://creativecommons.org/licenses/by/4.0/
|
By using a point canonical transformation starting from the constant-mass
Schr\"odinger equation for the isotonic potential, it is shown that a
semiconfined harmonic oscillator model with a position-dependent mass in the
BenDaniel-Duke setting and the same spectrum as the standard harmonic
oscillator can be easily constructed and extended to a semiconfined shifted
harmonic oscillator, which could result from the presence of a uniform
gravitational field. A further generalization is proposed by considering a
$m$-dependent position-dependent mass for $0<m<2$ and deriving the associated
semiconfined potential. This results in a family of position-dependent mass and
potential pairs, to which the original pair belongs as it corresponds to $m=1$.
Finally, the potential that would result from a general von Roos kinetic energy
operator is presented and the examples of the Zhu-Kroemer and
Mustafa-Mazharimousavi settings are briefly discussed.
|
[{'version': 'v1', 'created': 'Wed, 20 Oct 2021 14:23:53 GMT'}
{'version': 'v2', 'created': 'Mon, 14 Feb 2022 14:20:22 GMT'}]
|
2022-02-15
|
[array(['Quesne', 'C.', ''], dtype=object)]
|
5,363 |
1808.07080
|
Corey Howard
|
Corey S. Howard, Ralph E. Pudritz, William E. Harris
|
A universal route for the formation of massive star clusters in giant
molecular clouds
|
Submitted version to Nature Astronomy. Final published paper, and
online supplementary material, available at:
https://www.nature.com/articles/s41550-018-0506-0
| null |
10.1038/s41550-018-0506-0
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Young massive star clusters (YMCs, with M $\geq$10$^4$ M$_{\odot}$) are
proposed modern-day analogues of the globular clusters (GCs) that were products
of extreme star formation in the early universe. The exact conditions and
mechanisms under which YMCs form remain unknown -- a fact further complicated
by the extreme radiation fields produced by their numerous massive young stars.
Here we show that GC-sized clusters are naturally produced in
radiation-hydrodynamic simulations of isolated 10$^7$ M$_{\odot}$ Giant
Molecular Clouds (GMCs) with properties typical of the local universe, even
under the influence of radiative feedback. In all cases, these massive clusters
grow to GC-level masses within 5 Myr via a roughly equal combination of
filamentary gas accretion and mergers with several less massive clusters.
Lowering the heavy-element abundance of the GMC by a factor of 10 reduces the
opacity of the gas to radiation and better represents the high-redshift
formation conditions of GCs. This results in higher gas accretion leading to a
mass increase of the largest cluster by a factor of ~4. When combined with
simulations of less massive GMCs (10$^{4-6}$ M$_{\odot}$), a clear relation
emerges between the maximum YMC mass and the mass of the host GMC. Our results
demonstrate that YMCs, and potentially GCs, are a simple extension of local
cluster formation to more massive clouds and do not require suggested exotic
formation scenarios.
|
[{'version': 'v1', 'created': 'Tue, 21 Aug 2018 18:42:47 GMT'}]
|
2018-08-23
|
[array(['Howard', 'Corey S.', ''], dtype=object)
array(['Pudritz', 'Ralph E.', ''], dtype=object)
array(['Harris', 'William E.', ''], dtype=object)]
|
5,364 |
2003.14041
|
Alexey Samokhin
|
Alexey Samokhin
|
On connection between the splitting parameters of KdV initial datum and
its conservation quantities
|
12 pages, 18 figures
| null | null | null |
nlin.SI nlin.PS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An arbitrary compact-support initial datum for the Korteweg-de Vries equation
asymptotically splits into solitons and a radiation tail, moving in opposite
direction. We give asimple method to predict the number and amplitudes of
resulting solitons and some integral characteristics of the tail using only
conservation laws.
|
[{'version': 'v1', 'created': 'Tue, 31 Mar 2020 09:11:08 GMT'}]
|
2020-04-01
|
[array(['Samokhin', 'Alexey', ''], dtype=object)]
|
5,365 |
hep-th/9406056
|
Cobi Sonnenschein
|
Yoav Lavi, Yaron Oz and Jacob Sonnenschein
|
$(1,q=-1)$ Model as a Topological Description of $2d$ String Theory
|
39 pages,latex,taup-2170 -94
|
Nucl.Phys.B431:223-257,1994
|
10.1016/0550-3213(94)90105-8
| null |
hep-th
| null |
We study the $(1,q=-1)$ model coupled to topological gravity as a candidate
to describing $2d$ string theory at the self-dual radius. We define the model
by analytical continuation of $q>1$ topological recursion relations to $q=-1$.
We show that at genus zero the $q=-1$ recursion relations yield the
$W_{1+\infty}$ Ward identities for tachyon correlators on the sphere. A scheme
for computing correlation functions of $q=-1$ gravitational descendants is
proposed and applied for the computation of several correlators. It is
suggested that the latter correspond to correlators of discrete states of the
$c=1$ string. In a similar manner to the $q>1$ models, we show that there exist
topological recursion relations for the correlators in the $q=-1$ theory that
consist of only one and two splittings of the Riemann surface. Using a
postulated regularized contact, we prove that the genus one $q=-1$ recursion
relations for tachyon correlators coincide with the $W_{1+\infty}$ Ward
identities on the torus. We argue that the structure of these recursion
relations coincides with that of the $W_{1+\infty}$ Ward identities for any
genus.
|
[{'version': 'v1', 'created': 'Thu, 9 Jun 1994 15:32:48 GMT'}]
|
2009-09-29
|
[array(['Lavi', 'Yoav', ''], dtype=object)
array(['Oz', 'Yaron', ''], dtype=object)
array(['Sonnenschein', 'Jacob', ''], dtype=object)]
|
5,366 |
2211.10457
|
Julien Laurat
|
T. Darras, B.E. Asenbeck, G. Guccione, A. Cavaill\`es, H. Le Jeannic,
J. Laurat
|
A quantum-bit encoding converter
| null |
Nature Photonics (2022)
|
10.1038/s41566-022-01117-5
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
From telecommunication to computing architectures, the realm of classical
information hinges on converter technology to enable the exchange of data
between digital and analog formats, a process now routinely performed across a
variety of electronic devices. A similar exigency exists as well in quantum
information technology where different frameworks are being developed for
quantum computing, communication, and sensing. Thus, efficient quantum
interconnects are a major need to bring these parallel approaches together and
scale up quantum information systems. So far, however, the conversion between
different optical quantum-bit encodings has remained challenging due to the
difficulty of preserving fragile quantum superpositions and the demanding
requirements for postselection-free implementations. Here we demonstrate such a
conversion of quantum information between the two main paradigms, namely
discrete- and continuous-variable qubits. We certify the protocol on a complete
set of single-photon qubits, successfully converting them to cat-state qubits
with fidelities exceeding the classical limit. Our result demonstrates an
essential tool for enabling interconnected quantum devices and architectures
with enhanced versatility and scalability.
|
[{'version': 'v1', 'created': 'Fri, 18 Nov 2022 19:00:08 GMT'}]
|
2023-01-10
|
[array(['Darras', 'T.', ''], dtype=object)
array(['Asenbeck', 'B. E.', ''], dtype=object)
array(['Guccione', 'G.', ''], dtype=object)
array(['Cavaillès', 'A.', ''], dtype=object)
array(['Jeannic', 'H. Le', ''], dtype=object)
array(['Laurat', 'J.', ''], dtype=object)]
|
5,367 |
1412.0669
|
Shane Mansfield Dr
|
Shane Mansfield
|
Reality of the quantum state: Towards a stronger {\psi}-ontology theorem
|
rewordings and typos edited to agree with published version
|
Phys. Rev. A 94, 042124 (2016)
|
10.1103/PhysRevA.94.042124
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Pusey-Barrett-Rudolph (PBR) no-go theorem provides an argument for the
reality of the quantum state by ruling out {\psi}-epistemic ontological
theories, in which the quantum state is of a statistical nature. It applies
under an assumption of preparation independence, the validity of which has been
subject to debate. We propose two plausible and less restrictive alternatives:
a weaker notion allowing for classical correlations, and an even weaker,
physically motivated notion of independence, which merely prohibits the
possibility of superluminal causal influences in the preparation process. The
latter is a minimal requirement for enabling a reasonable treatment of
subsystems in any theory. It is demonstrated by means of an explicit
{\psi}-epistemic ontological model that the argument of PBR becomes invalid
under the alternative notions of independence. As an intermediate step, we
recover a result which is valid in the presence of classical correlations.
Finally, we obtain a theorem which holds under the minimal requirement,
approximating the result of PBR. For this, we consider experiments involving
randomly sampled preparations and derive bounds on the degree of {\psi}
epistemicity that is consistent with the quantum-mechanical predictions. The
approximation is exact in the limit as the sample space of preparations becomes
infinite.
|
[{'version': 'v1', 'created': 'Mon, 1 Dec 2014 21:00:21 GMT'}
{'version': 'v2', 'created': 'Mon, 23 Feb 2015 21:01:28 GMT'}
{'version': 'v3', 'created': 'Sun, 31 Jul 2016 13:33:47 GMT'}
{'version': 'v4', 'created': 'Mon, 27 Feb 2017 15:38:04 GMT'}]
|
2017-02-28
|
[array(['Mansfield', 'Shane', ''], dtype=object)]
|
5,368 |
1212.2606
|
Gabriele Veneziano
|
Gabriele Veneziano
|
Quantum hair and the string-black hole correspondence
|
11 pages, no figures, typos corrected, discussion and references
added, version accepted for publication in Class. and Quantum Gravity
| null |
10.1088/0264-9381/30/9/092001
|
CERN-PH-TH/2012-350
|
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a thought experiment in which an energetic massless string probes
a "stringhole" (a heavy string lying on the correspondence curve between
strings and black holes) at large enough impact parameter for the regime to be
under theoretical control. The corresponding, explicitly unitary, $S$-matrix
turns out to be perturbatively sensitive to the microstate of the stringhole:
in particular, at leading order in $l_s/b$, it depends on a projection of the
stringhole's Lorentz-contracted quadrupole moment. The string-black hole
correspondence is therefore violated if one assumes quantum hair to be
exponentially suppressed as a function of black-hole entropy. Implications for
the information paradox are briefly discussed.
|
[{'version': 'v1', 'created': 'Tue, 11 Dec 2012 20:14:42 GMT'}
{'version': 'v2', 'created': 'Thu, 28 Mar 2013 22:57:11 GMT'}]
|
2015-06-12
|
[array(['Veneziano', 'Gabriele', ''], dtype=object)]
|
5,369 |
hep-ph/0308146
|
Christian Weber
|
C. Weber, H. Eberl, W. Majerotto
|
Improved full one-loop corrections to A^0 -> \sf_1 \sf_2 and \sf_2 ->
\sf_1 A^0
|
42 pages, 20 figures (23 eps-files)
|
Phys.Rev. D68 (2003) 093011
|
10.1103/PhysRevD.68.093011
| null |
hep-ph
| null |
We calculate the full electroweak one-loop corrections to the decay of the
CP-odd Higgs boson A^0 into scalar fermions in the minimal supersymmetric
extension of the Standard Model. For this purpose many parameters of the MSSM
have to be properly renormalized in the on-shell renormalization scheme. We
have also included the SUSY-QCD corrections. For the decay into bottom squarks
and tau sleptons, especially for large \tan\b, the corrections can be very
large making the perturbation expansion unreliable. We solve this problem by an
appropriate definition of the tree-level coupling in terms of running fermion
masses and running trilinear couplings A_f. We also discuss the decay of heavy
scalar fermions into light scalar fermions and A^0. We find that the
corrections can be sizeable and therefore cannot be neglected.
|
[{'version': 'v1', 'created': 'Wed, 13 Aug 2003 19:39:45 GMT'}]
|
2009-11-10
|
[array(['Weber', 'C.', ''], dtype=object)
array(['Eberl', 'H.', ''], dtype=object)
array(['Majerotto', 'W.', ''], dtype=object)]
|
5,370 |
2008.12515
|
Oliver Biggar
|
Oliver Biggar (1), Mohammad Zamani (2), Iman Shames (1) ((1)
Australian National University, (2) Defence Science and Technology Group,
Australia)
|
On modularity in reactive control architectures, with an application to
formal verification
|
Accepted to ACM Transactions on Cyber-Physical Systems. 26 pages, 9
figures. Version 3 changes: accepted version, minor changes
| null | null | null |
cs.AI cs.RO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Modularity is a central principle throughout the design process for
cyber-physical systems. Modularity reduces complexity and increases reuse of
behavior. In this paper we pose and answer the following question: how can we
identify independent `modules' within the structure of reactive control
architectures? To this end, we propose a graph-structured control architecture
we call a decision structure, and show how it generalises some reactive control
architectures which are popular in Artificial Intelligence (AI) and robotics,
specifically Teleo-Reactive programs (TRs), Decision Trees (DTs), Behavior
Trees (BTs) and Generalised Behavior Trees ($k$-BTs). Inspired by the
definition of a module in graph theory, we define modules in decision
structures and show how each decision structure possesses a canonical
decomposition into its modules. We can naturally characterise each of the BTs,
$k$-BTs, DTs and TRs by properties of their module decomposition. This allows
us to recognise which decision structures are equivalent to each of these
architectures in quadratic time. Our proposed concept of modules extends to
formal verification, under any verification scheme capable of verifying a
decision structure. Namely, we prove that a modification to a module within a
decision structure has no greater flow-on effects than a modification to an
individual action within that structure. This enables verification on modules
to be done locally and hierarchically, where structures can be verified and
then repeatedly locally modified, with modules replaced by modules while
preserving correctness. To illustrate the findings, we present an example of a
solar-powered drone controlled by a decision structure. We use a Linear
Temporal Logic-based verification scheme to verify the correctness of this
structure, and then show how one can modify modules while preserving its
correctness.
|
[{'version': 'v1', 'created': 'Fri, 28 Aug 2020 07:25:38 GMT'}
{'version': 'v2', 'created': 'Tue, 4 May 2021 07:22:12 GMT'}
{'version': 'v3', 'created': 'Mon, 31 Jan 2022 02:19:04 GMT'}]
|
2022-02-01
|
[array(['Biggar', 'Oliver', ''], dtype=object)
array(['Zamani', 'Mohammad', ''], dtype=object)
array(['Shames', 'Iman', ''], dtype=object)]
|
5,371 |
1809.06459
|
Sina Chen
|
S. Chen, M. Berton, G. La Mura, E. Congiu, V. Cracco, L. Foschini,
J.H. Fan, S. Ciroi, P. Rafanelli, and D. Bastieri
|
A catalog of narrow-line Seyfert 1 galaxies in the southern hemisphere
|
Conference paper
| null | null | null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a new accurate sample of narrow-line Seyfert 1 galaxies (NLS1s) in
the southern hemisphere from the Six-degree Field Galaxy Survey (6dFGS). Based
on the optical spectral features, 167 sources were classified as NLS1s. We
derived flux-calibrated spectra in the sample for the first time. Strong
luminosity correlations between the continuum and the emission lines were
found. We estimated their central black hole masses and Eddington ratios, which
are lying in a typical range of NLS1s. In the sample, 23 NLS1s were detected at
radio frequencies and 12 of them are radio-loud. We publish the X-ray data
analysis of a campaign of observations carried out by the Swift X-ray
Telescope.
|
[{'version': 'v1', 'created': 'Mon, 17 Sep 2018 22:05:41 GMT'}]
|
2018-09-19
|
[array(['Chen', 'S.', ''], dtype=object)
array(['Berton', 'M.', ''], dtype=object)
array(['La Mura', 'G.', ''], dtype=object)
array(['Congiu', 'E.', ''], dtype=object)
array(['Cracco', 'V.', ''], dtype=object)
array(['Foschini', 'L.', ''], dtype=object)
array(['Fan', 'J. H.', ''], dtype=object)
array(['Ciroi', 'S.', ''], dtype=object)
array(['Rafanelli', 'P.', ''], dtype=object)
array(['Bastieri', 'D.', ''], dtype=object)]
|
5,372 |
2012.09226
|
Jiening Zhu
|
Jiening Zhu, Kaiming Xu, Allen Tannenbaum
|
Optimal transport for vector Gaussian mixture models
| null | null | null | null |
stat.ML cs.LG math.OC math.PR
|
http://creativecommons.org/licenses/by/4.0/
|
Vector-valued Gaussian mixtures form an important special subset of
vector-valued distributions. In general, vector-valued distributions constitute
natural representations for physical entities, which can mutate or transit
among alternative manifestations distributed in a given space. A key example is
color imagery. In this note, we vectorize the Gaussian mixture model and study
several different optimal mass transport related problems associated to such
models. The benefits of using vector Gaussian mixture for optimal mass
transport include computational efficiency and the ability to preserve
structure.
|
[{'version': 'v1', 'created': 'Wed, 16 Dec 2020 19:46:08 GMT'}
{'version': 'v2', 'created': 'Fri, 12 Aug 2022 03:38:56 GMT'}
{'version': 'v3', 'created': 'Wed, 9 Nov 2022 19:01:06 GMT'}]
|
2022-11-11
|
[array(['Zhu', 'Jiening', ''], dtype=object)
array(['Xu', 'Kaiming', ''], dtype=object)
array(['Tannenbaum', 'Allen', ''], dtype=object)]
|
5,373 |
1712.08876
|
Jian Gao
|
Jian Gao
|
Maximizing the Collective Learning Effects in Regional Economic
Development
| null |
2017 14th ICCWAMTIP, IEEE, 2017, pp. 337-341
|
10.1109/ICCWAMTIP.2017.8301509
| null |
physics.soc-ph cs.SI q-fin.EC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Collective learning in economic development has been revealed by recent
empirical studies, however, investigations on how to benefit most from its
effects remain still lacking. In this paper, we explore the maximization of the
collective learning effects using a simple propagation model to study the
diversification of industries on real networks built on Brazilian labor data.
For the inter-regional learning, we find an optimal strategy that makes a
balance between core and periphery industries in the initial activation,
considering the core-periphery structure of the industry space--a network
representation of the relatedness between industries. For the inter-regional
learning, we find an optimal strategy that makes a balance between nearby and
distant regions in establishing new spatial connections, considering the
spatial structure of the integrated adjacent network that connects all regions.
Our findings suggest that the near to by random strategies are likely to make
the best use of the collective learning effects in advancing regional economic
development practices.
|
[{'version': 'v1', 'created': 'Sun, 24 Dec 2017 04:46:16 GMT'}]
|
2019-06-12
|
[array(['Gao', 'Jian', ''], dtype=object)]
|
5,374 |
1510.08101
|
Xiang Cheng
|
Qianyun Zhang, Ming Gao, Runchen Zhao, and Xiang Cheng
|
Scaling of liquid-drop impact craters in wet granular media
|
8 pages, 8 figures
|
Phys. Rev. E 92, 042205 (2015)
|
10.1103/PhysRevE.92.042205
| null |
cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Combining high-speed photography with laser profilometry, we study the
dynamics and the morphology of liquid-drop impact cratering in wet granular
media---a ubiquitous phenomenon relevant to many important geological,
agricultural, and industrial processes. By systematically investigating
important variables such as impact energy, the size of impinging drops and the
degree of liquid saturation in granular beds, we uncover a novel scaling for
the size of impact craters. We show that this scaling can be explained by
considering the balance between the inertia of impinging drops and the strength
of impacted surface. Such a theoretical understanding confirms that the unique
energy partition originally proposed for liquid-drop impact cratering in dry
granular media also applies for impact cratering in wet granular media.
Moreover, we demonstrate that compressive stresses, instead of shear stresses,
control granular impact cratering. Our study enriches the picture of generic
granular impact cratering and sheds light on the familiar phenomena of raindrop
impacts in granular media.
|
[{'version': 'v1', 'created': 'Tue, 27 Oct 2015 21:21:24 GMT'}]
|
2015-10-29
|
[array(['Zhang', 'Qianyun', ''], dtype=object)
array(['Gao', 'Ming', ''], dtype=object)
array(['Zhao', 'Runchen', ''], dtype=object)
array(['Cheng', 'Xiang', ''], dtype=object)]
|
5,375 |
1911.03034
|
Shuo Yang
|
Shuo Yang, Yanyao Shen, Sujay Sanghavi
|
Interaction Hard Thresholding: Consistent Sparse Quadratic Regression in
Sub-quadratic Time and Space
|
Accepted by NeurIPS 2019
| null | null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Quadratic regression involves modeling the response as a (generalized) linear
function of not only the features $x^{j_1}$ but also of quadratic terms
$x^{j_1}x^{j_2}$. The inclusion of such higher-order "interaction terms" in
regression often provides an easy way to increase accuracy in
already-high-dimensional problems. However, this explodes the problem dimension
from linear $O(p)$ to quadratic $O(p^2)$, and it is common to look for sparse
interactions (typically via heuristics). In this paper, we provide a new
algorithm - Interaction Hard Thresholding (IntHT) which is the first one to
provably accurately solve this problem in sub-quadratic time and space. It is a
variant of Iterative Hard Thresholding; one that uses the special quadratic
structure to devise a new way to (approx.) extract the top elements of a $p^2$
size gradient in sub-$p^2$ time and space. Our main result is to theoretically
prove that, in spite of the many speedup-related approximations, IntHT linearly
converges to a consistent estimate under standard high-dimensional sparse
recovery assumptions. We also demonstrate its value via synthetic experiments.
Moreover, we numerically show that IntHT can be extended to higher-order
regression problems, and also theoretically analyze an SVRG variant of IntHT.
|
[{'version': 'v1', 'created': 'Fri, 8 Nov 2019 04:02:38 GMT'}]
|
2019-11-11
|
[array(['Yang', 'Shuo', ''], dtype=object)
array(['Shen', 'Yanyao', ''], dtype=object)
array(['Sanghavi', 'Sujay', ''], dtype=object)]
|
5,376 |
2007.06690
|
Pavlos Lagoudakis Prof
|
Julian D. T\"opfer, Ioannis Chatzopoulos, Helgi Sigurdsson, Tamsin
Cookson, Yuri G. Rubo, Pavlos G. Lagoudakis
|
Engineering spatial coherence in lattices of polariton condensates
| null | null |
10.1364/OPTICA.409976
| null |
cond-mat.mes-hall
|
http://creativecommons.org/licenses/by/4.0/
|
Artificial lattices of coherently coupled macroscopic states are at the heart
of applications ranging from solving hard combinatorial optimisation problems
to simulating complex many-body physical systems. The size and complexity of
the problems scales with the extent of coherence across the lattice. Although
the fundamental limit of spatial coherence depends on the nature of the
couplings and lattice parameters, it is usually engineering constrains that
define the size of the system. Here, we engineer polariton condensate lattices
with active control on the spatial arrangement and condensate density that
result in near-diffraction limited emission, and spatial coherence that exceeds
by nearly two orders of magnitude the size of each individual condensate. We
utilise these advancements to unravel the dependence of spatial correlations
between polariton condensates on the lattice geometry.
|
[{'version': 'v1', 'created': 'Mon, 13 Jul 2020 21:04:28 GMT'}]
|
2021-04-20
|
[array(['Töpfer', 'Julian D.', ''], dtype=object)
array(['Chatzopoulos', 'Ioannis', ''], dtype=object)
array(['Sigurdsson', 'Helgi', ''], dtype=object)
array(['Cookson', 'Tamsin', ''], dtype=object)
array(['Rubo', 'Yuri G.', ''], dtype=object)
array(['Lagoudakis', 'Pavlos G.', ''], dtype=object)]
|
5,377 |
1706.08883
|
Aybike Ozer
|
Aybike Catal-Ozer
|
Massive Deformations of Type IIA Theory Within Double Field Theory
|
Section 4 (conclusion and outlook) expanded, published version
|
JHEP02(2018)179
|
10.1007/JHEP02(2018)179
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We obtain massive deformations of Type IIA supergravity theory through
duality twisted reductions of Double Field Theory (DFT) of massless Type II
strings. The mass deformation is induced through the reduction of the DFT of
the RR sector. Such reductions are determined by a twist element belonging to
$Spin^+(10,10)$, which is the duality group of the DFT of the RR sector. We
determine the form of the twists and give particular examples of twist
matrices, for which a massive deformation of Type IIA theory can be obtained.
In one of the cases, requirement of gauge invariance of the RR sector implies
that the dilaton field must pick up a linear dependence on one of the dual
coordinates. In another case, the choice of the twist matrix violates the weak
and the strong constraints explicitly in the internal doubled space.
|
[{'version': 'v1', 'created': 'Mon, 26 Jun 2017 11:59:49 GMT'}
{'version': 'v2', 'created': 'Tue, 31 Oct 2017 11:28:57 GMT'}
{'version': 'v3', 'created': 'Thu, 8 Mar 2018 06:38:27 GMT'}]
|
2018-03-09
|
[array(['Catal-Ozer', 'Aybike', ''], dtype=object)]
|
5,378 |
1310.2251
|
Mauro Sereno
|
Mauro Sereno (POLITO), Danuta Paraficz
|
Hubble constant and dark energy inferred from free-form determined time
delay distances
|
6 pages; accepted for publication on MNRAS
| null |
10.1093/mnras/stt1938
| null |
astro-ph.CO gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Time delays between multiple images of lensed sources can probe the geometry
of the universe. We propose a novel method based on free-form modelling of
gravitational lenses to estimate time-delay distances and, in turn,
cosmological parameters. This approach does not suffer from the degeneracy
between the steepness of the profile and the cosmological parameters. We apply
the method to 18 systems having time delay measurements and find
H_0=69+-6(stat.)+-4(syst.) km s^{-1}Mpc^{-1}. In combination with WMAP9, the
constraints on dark energy are Omega_w=0.68+-0.05 and w=-0.86+-0.17 in a flat
model with constant equation-of-state.
|
[{'version': 'v1', 'created': 'Tue, 8 Oct 2013 20:00:08 GMT'}]
|
2015-06-17
|
[array(['Sereno', 'Mauro', '', 'POLITO'], dtype=object)
array(['Paraficz', 'Danuta', ''], dtype=object)]
|
5,379 |
1609.03012
|
Minhyong Kim
|
Hee-Joong Chung, Dohyeong Kim, Minhyong Kim, Jeehoon Park, Hwajong Yoo
|
Arithmetic Chern-Simons Theory II
|
This is a continuation of the paper arXiv:1510.05818. Because there
is no plan to submit that paper for publication, the beginning sections
contain some overlap. But the motivational discussion has been minimised and
examples included. In this version, section 3 corrected and simplified
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We apply ideas of Dijkgraaf and Witten on three-dimensional topological
quantum field theory to arithmetic curves, that is, the spectra of rings of
integers in algebraic number fields. In the first three sections, we define
classical Chern-Simons actions on spaces of Galois representations. In the
subsequent sections, we give formulas for computation in a small class of cases
and point towards some arithmetic applications.
|
[{'version': 'v1', 'created': 'Sat, 10 Sep 2016 08:32:25 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Nov 2016 11:34:32 GMT'}
{'version': 'v3', 'created': 'Mon, 26 Jun 2017 11:00:17 GMT'}]
|
2017-06-27
|
[array(['Chung', 'Hee-Joong', ''], dtype=object)
array(['Kim', 'Dohyeong', ''], dtype=object)
array(['Kim', 'Minhyong', ''], dtype=object)
array(['Park', 'Jeehoon', ''], dtype=object)
array(['Yoo', 'Hwajong', ''], dtype=object)]
|
5,380 |
astro-ph/0306292
|
David M. Smith
|
David M. Smith, Gerald H. Share, Ronald J. Murphy, Richard A.
Schwartz, Albert Y. Shih, and Robert P. Lin
|
High-Resolution Spectroscopy of Gamma-Ray Lines from the X-Class Solar
Flare of 23 July, 2002
|
5 pages, 4 figures, accepted by The Astrophysical Journal Letters
|
Astrophys.J. 595 (2003) L81-L84
|
10.1086/378173
| null |
astro-ph
| null |
The Reuven Ramaty High Energy Solar Spectroscopy Imager (RHESSI) has obtained
the first high-resolution measurements of nuclear de-excitation lines produced
by energetic ions accelerated in a solar flare, a GOES X4.8 event occurring on
23 July, 2002 at a heliocentric angle of 73 degrees. Lines of neon, magnesium,
silicon, iron, carbon, and oxygen were resolved for the first time. They
exhibit Doppler redshifts of 0.1--0.8% and broadening of 0.1--2.1% (FWHM),
generally decreasing with mass. The measured redshifts are larger than expected
for a model of an interacting ion distribution isotropic in the downward
hemisphere in a radial magnetic field. Possible interpretations of the large
redshifts include 1) an inclination of the loop magnetic field to the solar
surface so that the ion distribution is oriented more directly away from the
observer, and 2) extreme beaming of the ions downward along a magnetic field
normal to the solar surface. Bulk downward motion of the plasma in which the
accelerated ions interact can be ruled out.
|
[{'version': 'v1', 'created': 'Sat, 14 Jun 2003 00:13:02 GMT'}]
|
2009-11-07
|
[array(['Smith', 'David M.', ''], dtype=object)
array(['Share', 'Gerald H.', ''], dtype=object)
array(['Murphy', 'Ronald J.', ''], dtype=object)
array(['Schwartz', 'Richard A.', ''], dtype=object)
array(['Shih', 'Albert Y.', ''], dtype=object)
array(['Lin', 'Robert P.', ''], dtype=object)]
|
5,381 |
hep-ph/9803390
|
Baldicchi Massimiliano
|
M. Baldicchi and G.M. Prosperi
|
Regge trajectories and quarkonium spectrum from a first principle
Salpeter equation
|
18 pages, 3 figures, revtex.sty
|
Phys.Lett. B436 (1998) 145-152
|
10.1016/S0370-2693(98)00830-2
|
Milano preprint IFUM 606/FT
|
hep-ph
| null |
We compute the heavy-heavy, light-light and light-heavy quarkonium spectrum
starting from a first principle Salpeter equation obtained in a preceding
paper. We neglect spin-orbit structures and exclude from our treatment the
light pseudoscalar states which in principle would require the use of the full
Bethe-Salpeter equation due to the chiral symmetry breaking problem. For the
rest we find an overall good agreement with the experimental data. In
particular for the light-light case we find straight Regge trajectories with
the right slope and intercepts. The strong coupling constant $\alpha_s$, the
string tension $\sigma$ occurring in the potential and the heavy quark masses
are taken from the heavy quarkonium semirelativistic fit with only a small
rearrangement. The light quark masses are set equal to baricentral value of the
current quark masses as reported by the particle data group. For what concerns
the light-light and the light-heavy systems the calculation is essentially
parameter free.
|
[{'version': 'v1', 'created': 'Thu, 19 Mar 1998 16:14:57 GMT'}
{'version': 'v2', 'created': 'Fri, 20 Mar 1998 15:46:23 GMT'}]
|
2009-10-31
|
[array(['Baldicchi', 'M.', ''], dtype=object)
array(['Prosperi', 'G. M.', ''], dtype=object)]
|
5,382 |
2303.06525
|
Zao-Chun Gao
|
Xiao Lu, Zhan-Jiang Lian, Xue-Wei Li, Zao-Chun Gao, and Yong-Shou Chen
|
Finding the best basis states for the variation after projection nuclear
wave functions
|
7 pages, 5 figures
| null |
10.1088/1674-1137/accf08
| null |
nucl-th
|
http://creativecommons.org/licenses/by/4.0/
|
The variation after projection (VAP) method is expected to be an efficient
way of getting the optimized nuclear wave functions, so that they can be as
close as possible to the exact shell model ones. However, we found there are
two additional problems that may seriously affect the convergence of the VAP
iteration. The first problem is, if a randomly selected projected basis state
does not mix with a VAP wave function in the VAP calculation, then it is likely
that this basis state will never mix with the VAP wave function even after the
VAP iteration converges, which means such selected projected basis state is
useless. The other problem is the poor orthonormality among the projected basis
states that seriously affect the accuracy of the calculated VAP wave function.
In the present work, solutions for these two problems are proposed and some
examples are presented to test the validity. It turns out that, with the
present solutions, the most important projected basis states can be reliably
obtained and the fully optimized VAP wave functions can be accurately and
efficiently calculated.
|
[{'version': 'v1', 'created': 'Sun, 12 Mar 2023 00:17:38 GMT'}]
|
2023-06-21
|
[array(['Lu', 'Xiao', ''], dtype=object)
array(['Lian', 'Zhan-Jiang', ''], dtype=object)
array(['Li', 'Xue-Wei', ''], dtype=object)
array(['Gao', 'Zao-Chun', ''], dtype=object)
array(['Chen', 'Yong-Shou', ''], dtype=object)]
|
5,383 |
0809.0403
|
Stephen Smartt
|
S.J. Smartt (1), J.J. Eldridge (2), R.M. Crockett (1), J.R. Maund (3)
((1) Queen's University Belfast; (2) IoA, Cambridge; (3) Dark Cosmology
Centre, Copenhagen)
|
The death of massive stars - I. Observational constraints on the
progenitors of type II-P supernovae
|
37 pages, 9 figs, accepted for publication in MNRAS
| null |
10.1111/j.1365-2966.2009.14506.x
| null |
astro-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the results of a 10.5 yr, volume limited (28 Mpc) search for
supernova (SN) progenitor stars. We compile all SNe discovered within this
volume (132, of which 27% are type Ia) and determine the relative rates of each
sub-type from literature studies : II-P (59%), Ib/c (29%), IIb (5%), IIn (4%)
and II-L (3%). Twenty II-P SNe have high quality optical or near-IR
pre-explosion images that allow a meaningful search for the progenitor stars.
In five cases they are clearly red supergiants, one case is unconstrained, two
fall on compact coeval star clusters and the other twelve have no progenitor
detected. We review and update all the available data for the host galaxies
(distance, metallicity and extinction) and determine masses and upper mass
estimates using the STARS stellar evolutionary code and a single consistent
homogeneous method. A maximum likelihood calculation suggests that the minimum
stellar mass for a type II-P to form is m(min)=8.5 +1/-1.5 Msol and the maximum
mass for II-P progenitors is m(max)=16.5 +/- 1.5 Msol, assuming a Salpeter
initial mass function (in the range Gamma = -1.35 +0.3/-0.7). The minimum mass
is consistent with current estimates for white dwarf progenitor masses, but the
maximum mass does not appear consistent with massive star populations. Red
supergiants in the Local Group have masses up to 25Msol and the minimum mass to
produce a Wolf-Rayet star in single star evolution (between solar and LMC
metallicity) is similarly 25-30 Msol. We term this discrepancy the "red
supergiant problem" and speculate that these stars could have core masses high
enough to form black holes and SNe which are too faint to have been detected.
Low luminosity SNe with low 56Ni production seem to arise from explosions of
low mass progenitors near the mass threshold for core-collapse. (abridged).
|
[{'version': 'v1', 'created': 'Tue, 2 Sep 2008 13:00:45 GMT'}
{'version': 'v2', 'created': 'Wed, 14 Jan 2009 10:29:39 GMT'}]
|
2009-11-13
|
[array(['Smartt', 'S. J.', ''], dtype=object)
array(['Eldridge', 'J. J.', ''], dtype=object)
array(['Crockett', 'R. M.', ''], dtype=object)
array(['Maund', 'J. R.', ''], dtype=object)]
|
5,384 |
1906.01173
|
Piyush Sharda Mr.
|
Piyush Sharda, Elisabete da Cunha, Christoph Federrath, Emily
Wisnioski, Enrico di Teodoro, Ken-ichi Tadaki, Min Yun, Itziar Aretxaga and
Ryohei Kawabe
|
Testing Star Formation Laws on Spatially Resolved Regions in a $z
\approx 4.3$ Starburst Galaxy
|
9 pages, 5 figures, accepted for publication in MNRAS
| null |
10.1093/mnras/stz1543
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We probe the star formation properties of the gas in AzTEC-1 in the COSMOS
field, one of the best resolved and brightest starburst galaxies at $z \approx
4.3$, forming stars at a rate > 1000 $\mathrm{M_{\odot}}\,\mathrm{yr^{-1}}$.
Using recent ALMA observations, we study star formation in the galaxy nucleus
and an off-center star-forming clump and measure a median star formation rate
(SFR) surface density of $\Sigma^{\mathrm{nucleus}}_{\mathrm{SFR}} = 270\pm54$
and $\Sigma^{\mathrm{sfclump}}_{\mathrm{SFR}} =
170\pm38\,\mathrm{M_{\odot}}\,\mathrm{yr}^{-1}\,\mathrm{kpc}^{-2}$,
respectively. Following the analysis by Sharda et al. (2018), we estimate the
molecular gas mass, freefall time and turbulent Mach number in these regions to
predict $\Sigma_{\mathrm{SFR}}$ from three star formation relations in the
literature. The Kennicutt-Schmidt (Kennicutt 1998, KS) relation, which is based
on the gas surface density, underestimates the $\Sigma_{\mathrm{SFR}}$ in these
regions by a factor 2-3. The $\Sigma_{\mathrm{SFR}}$ we calculate from the
single-freefall model of Krumholz et al. 2012 (KDM) is consistent with the
measured $\Sigma_{\mathrm{SFR}}$ in the nucleus and the star-forming clump
within the uncertainties. The turbulence-regulated star formation relation by
Salim et al. 2015 (SFK) agrees slightly better with the observations than the
KDM relation. Our analysis reveals that an interplay between turbulence and
gravity can help sustain high SFRs in high-redshift starbursts. It can also be
extended to other high- and low-redshift galaxies thanks to the high angular
resolution and sensitivity of ALMA observations.
|
[{'version': 'v1', 'created': 'Tue, 4 Jun 2019 03:00:07 GMT'}]
|
2019-06-07
|
[array(['Sharda', 'Piyush', ''], dtype=object)
array(['da Cunha', 'Elisabete', ''], dtype=object)
array(['Federrath', 'Christoph', ''], dtype=object)
array(['Wisnioski', 'Emily', ''], dtype=object)
array(['di Teodoro', 'Enrico', ''], dtype=object)
array(['Tadaki', 'Ken-ichi', ''], dtype=object)
array(['Yun', 'Min', ''], dtype=object)
array(['Aretxaga', 'Itziar', ''], dtype=object)
array(['Kawabe', 'Ryohei', ''], dtype=object)]
|
5,385 |
1104.2994
|
Peter van Zwol
|
P.J. van Zwol, K. Joulain, P. Ben Abdallah, J.J. Greffet, J. Chevrier
|
Fast heat flux modulation at the nanoscale
|
Submitted to PRB
| null | null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a new concept for electrically controlled heat flux modulation.
A flux contrast larger than 10 dB is expected with switching time on the order
of tens of nanoseconds. Heat flux modulation is based on the interplay between
radiative heat transfer at the nanoscale and phase change materials. Such large
contrasts are not obtainable in solids, or in far field. As such this opens up
new horizons for temperature modulation and actuation at the nanoscale.
|
[{'version': 'v1', 'created': 'Fri, 15 Apr 2011 09:13:08 GMT'}]
|
2011-04-18
|
[array(['van Zwol', 'P. J.', ''], dtype=object)
array(['Joulain', 'K.', ''], dtype=object)
array(['Abdallah', 'P. Ben', ''], dtype=object)
array(['Greffet', 'J. J.', ''], dtype=object)
array(['Chevrier', 'J.', ''], dtype=object)]
|
5,386 |
2108.07747
|
Dmitrii Trunin
|
Dmitrii A. Trunin
|
Nonlinear dynamical Casimir effect at weak nonstationarity
|
15 pages + appendices, 3 figures. v4: discussion extended
|
Eur. Phys. J. C 82, 440 (2022)
|
10.1140/epjc/s10052-022-10388-9
| null |
hep-th gr-qc quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that even small nonlinearities significantly affect particle
production in the dynamical Casimir effect at large evolution times. To that
end, we derive the effective Hamiltonian and resum leading loop corrections to
the particle flux in a massless scalar field theory with time-dependent
Dirichlet boundary conditions and quartic self-interaction. To perform the
resummation, we assume small deviations from the equilibrium and employ a kind
of rotating wave approximation. Besides that, we consider a quantum circuit
analog of the dynamical Casimir effect, which is also essentially nonlinear. In
both cases, loop contributions to the number of created particles are
comparable to the tree-level values.
|
[{'version': 'v1', 'created': 'Tue, 17 Aug 2021 16:37:28 GMT'}
{'version': 'v2', 'created': 'Tue, 5 Oct 2021 09:56:49 GMT'}
{'version': 'v3', 'created': 'Fri, 26 Nov 2021 19:57:41 GMT'}
{'version': 'v4', 'created': 'Fri, 10 Jun 2022 19:58:21 GMT'}]
|
2022-06-14
|
[array(['Trunin', 'Dmitrii A.', ''], dtype=object)]
|
5,387 |
2206.07966
|
Yu Qin
|
Yu Qin and Alex Sheremet
|
Mesoscopic Collective Activity in Excitatory Neural Fields: Governing
Equations
|
27 pages, 7 figures
| null | null | null |
q-bio.QM q-bio.NC
|
http://creativecommons.org/licenses/by/4.0/
|
In this study we derive the governing equations for mesoscopic collective
activity in the cortex, starting from the generic Hodgkin-Huxley equations for
microscopic cell dynamics. For simplicity, and to maintain focus on the
essential elements of the derivation, the discussion is confined to excitatory
neural fields. The fundamental assumption of the procedure is that mesoscale
processes are macroscopic with respect to cell-scale activity, and emerge as
the average behavior of a large population of cells. Because of their duration,
action-potential details are assumed not observable at mesoscale; the essential
mesoscopic function of action potentials is to redistribute energy in the
neural field. The Hodgkin-Huxley dynamical model is first reduced to a set of
equations that describe subthreshold dynamics. An ensemble average over a cell
population then produces a closed system of equations involving two mesoscopic
state variables: the density of kinetic energy J, carried by sodium ionic
currents, and the excitability H of the neural field, which could be described
as the average state of gating variable h. The resulting model is represented
as essentially a subthreshold process; and the dynamical role of the firing
rate is naturally reassessed as describing energy transfers. The linear
properties of the equations are consistent with expectations for the dynamics
of excitatory neural fields: the system supports oscillations of progressive
waves, with shorter waves typically having higher frequencies, propagating
slower, and decaying faster. Extending the derivation to include more complex
cell dynamics (e.g., including other ionic channels, e.g., calcium channels)
and multiple-type, excitatory-inhibitory, neural fields is straightforward, and
will be presented elsewhere.
|
[{'version': 'v1', 'created': 'Thu, 16 Jun 2022 07:13:33 GMT'}
{'version': 'v2', 'created': 'Wed, 6 Jul 2022 17:50:09 GMT'}]
|
2022-07-07
|
[array(['Qin', 'Yu', ''], dtype=object)
array(['Sheremet', 'Alex', ''], dtype=object)]
|
5,388 |
cs/0307041
|
Vince Grolmusz
|
Vince Grolmusz
|
High-density and Secure Data Transmission via Linear Combinations
|
Preliminary version
| null | null | null |
cs.CC cs.AR
| null |
Suppose that there are $n$ Senders and $n$ Receivers. Our goal is to send
long messages from Sender $i$ to Receiver $i$ such that no other receiver can
retrieve the message intended for Receiver $i$. The task can easily be
completed using $n$ private channels between the pairs. Solutions, using one
channel needs either encryption or switching elements for routing the messages
to their addressee.
The main result of the present work is a description of a network in which
The Senders and the Receivers are connected with only $n^{o(1)}$ channels; the
encoding and de-coding is nothing else just very fast linear combinations of
the message-bits; and there are no switching or routing-elements in the
network, just linear combinations are computed, with fixed connections
(channels or wires).
In the proofs we do not use {\em any} unproven cryptographical or complexity
theoretical assumptions.
|
[{'version': 'v1', 'created': 'Thu, 17 Jul 2003 12:10:21 GMT'}]
|
2007-05-23
|
[array(['Grolmusz', 'Vince', ''], dtype=object)]
|
5,389 |
1806.04161
|
Ancla M\"uller
|
Ancla M\"uller, Moritz Hackstein, Maksim Greiner, Philipp Frank,
Dominik Bomans, Ralf-J\"urgen Dettmar, Torsten En{\ss}lin
|
Sharpening up Galactic all-sky maps with complementary data - A machine
learning approach
| null |
A&A 620, A64 (2018)
|
10.1051/0004-6361/201833604
| null |
astro-ph.GA astro-ph.HE astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Galactic all-sky maps at very disparate frequencies, like in the radio and
$\gamma$-ray regime, show similar morphological structures. This mutual
information reflects the imprint of the various physical components of the
interstellar medium. We want to use multifrequency all-sky observations to test
resolution improvement and restoration of unobserved areas for maps in certain
frequency ranges. For this we aim to reconstruct or predict from sets of other
maps all-sky maps that, in their original form, lack a high resolution compared
to other available all-sky surveys or are incomplete in their spatial coverage.
Additionally, we want to investigate the commonalities and differences that the
ISM components exhibit over the electromagnetic spectrum. We build an
$n$-dimensional representation of the joint pixel-brightness distribution of
$n$ maps using a Gaussian mixture model and see how predictive it is: How well
can one map be reproduced based on subsets of other maps? Tests with mock data
show that reconstructing the map of a certain frequency from other frequency
regimes works astonishingly well, predicting reliably small-scale details well
below the spatial resolution of the initially learned map. Applied to the
observed multifrequency data sets of the Milky Way this technique is able to
improve the resolution of, e.g., the low-resolution Fermi LAT maps as well as
to recover the sky from artifact-contaminated data like the ROSAT 0.855 keV
map. The predicted maps generally show less imaging artifacts compared to the
original ones. A comparison of predicted and original maps highlights
surprising structures, imaging artifacts (fortunately not reproduced in the
prediction), and features genuine to the respective frequency range that are
not present at other frequency bands. We discuss limitations of this machine
learning approach and ideas how to overcome them.
|
[{'version': 'v1', 'created': 'Mon, 11 Jun 2018 18:05:31 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Oct 2018 18:38:02 GMT'}]
|
2018-12-05
|
[array(['Müller', 'Ancla', ''], dtype=object)
array(['Hackstein', 'Moritz', ''], dtype=object)
array(['Greiner', 'Maksim', ''], dtype=object)
array(['Frank', 'Philipp', ''], dtype=object)
array(['Bomans', 'Dominik', ''], dtype=object)
array(['Dettmar', 'Ralf-Jürgen', ''], dtype=object)
array(['Enßlin', 'Torsten', ''], dtype=object)]
|
5,390 |
0803.0007
|
Aderaldo Araujo I. L.
|
Gilberto Corso, Aderaldo I. L. Araujo, Adriana M. Almeida
|
A new nestedness estimator in community networks
|
16 pages, 8 figures, 1 table
| null | null | null |
physics.bio-ph physics.soc-ph q-bio.PE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A recent problem in community ecology lies in defining structures behind
matrices of species interactions. The interest in this area is to quantify the
nestedness degree of the matrix after its maximal packing. In this work we
evaluate nestedness using the sum of all distances of the occupied sites to the
vertex of the matrix. We calculate the distance for two artificial matrices
with the same size and occupancy: a random matrix and a perfect nested one.
Using these two benchmarks we develop a nestedness estimator. The estimator is
applied to a set of 23 real networks of insect-plant interactions.
|
[{'version': 'v1', 'created': 'Fri, 29 Feb 2008 21:17:30 GMT'}]
|
2008-03-04
|
[array(['Corso', 'Gilberto', ''], dtype=object)
array(['Araujo', 'Aderaldo I. L.', ''], dtype=object)
array(['Almeida', 'Adriana M.', ''], dtype=object)]
|
5,391 |
1401.1722
|
Masaki Mori
|
Masaki Mori
|
A cellular approach to the Hecke-Clifford superalgebra
|
[v2] 81 pages; corrected Corollary 6.41, added references and fixed
typos. Thanks Tsuchioka-san. [v1] 77 pages
| null | null | null |
math.RT math.RA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Hecke-Clifford superalgebra is a super-analogue of the Iwahori-Hecke
algebra of type A. The classification of its simple modules is done by Brundan,
Kleshchev and Tsuchioka using a method of categorification of affine Lie
algebras. In this paper, we introduce another way to produce its simple modules
with a generalized theory of cellular algebras which is originally developed by
Graham and Lehrer. In our construction the key is that there is a right action
of the Clifford superalgebra on the super-analogue of the Specht module. With
the help of the notion of the Morita context, a simple module of the
Hecke-Clifford superalgebra is made from that of the Clifford superalgebra.
|
[{'version': 'v1', 'created': 'Wed, 8 Jan 2014 15:11:27 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Jan 2014 14:39:18 GMT'}]
|
2014-01-28
|
[array(['Mori', 'Masaki', ''], dtype=object)]
|
5,392 |
1510.08061
|
Nicola Tarasca
|
Dawei Chen and Nicola Tarasca
|
Extremality of loci of hyperelliptic curves with marked Weierstrass
points
|
10 pages. To appear in Algebra & Number Theory
|
Algebra Number Theory 10 (2016) 1935-1948
|
10.2140/ant.2016.10.1935
| null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The locus of genus-two curves with n marked Weierstrass points has
codimension n inside the moduli space of genus-two curves with n marked points,
for n<=6. It is well known that the class of the closure of the divisor
obtained for n=1 spans an extremal ray of the cone of effective divisor
classes. We generalize this result for all n: we show that the class of the
closure of the locus of genus-two curves with n marked Weierstrass points spans
an extremal ray of the cone of effective classes of codimension n, for n<=6. A
related construction produces extremal nef curve classes in moduli spaces of
pointed elliptic curves.
|
[{'version': 'v1', 'created': 'Tue, 27 Oct 2015 20:05:03 GMT'}
{'version': 'v2', 'created': 'Wed, 14 Sep 2016 14:09:05 GMT'}]
|
2016-11-30
|
[array(['Chen', 'Dawei', ''], dtype=object)
array(['Tarasca', 'Nicola', ''], dtype=object)]
|
5,393 |
1602.03213
|
R. Mark Bradley
|
R. Mark Bradley
|
Morphological Transitions in Nanoscale Patterns Produced by Concurrent
Ion Sputtering and Impurity Co-deposition
| null | null |
10.1063/1.4945678
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We modify the theory of nanoscale patterns produced by ion bombardment with
concurrent impurity deposition to take into account the effect that the
near-surface impurities have on the collision cascades. As the impurity
concentration is increased, the resulting theory successively yields a flat
surface, a rippled surface with its wavevector along the projected direction of
ion incidence, and a rippled surface with its wavevector rotated by 90 degrees.
Exactly the same morphological transitions were observed in recent experiments
in which silicon was bombarded with an argon ion beam and gold was co-deposited
[B.~Moon et al. arXiv:1601.02534 (2016)].
|
[{'version': 'v1', 'created': 'Tue, 9 Feb 2016 22:27:15 GMT'}]
|
2016-05-04
|
[array(['Bradley', 'R. Mark', ''], dtype=object)]
|
5,394 |
math/9907038
|
Naruhiko Aizawa
|
N. Aizawa
|
Symplecton for U_h(sl(2)) and representations of SL_h(2)
|
20 pages, LaTeX2e, no figures, to be published in J.Math.Phys
|
J. Math. Phys. 40 (1999) 5921-5938.
|
10.1063/1.533080
|
OWUAM-030
|
math.QA math-ph math.MP
| null |
Polynomials of boson creation and annihilation operators which form
irreducible tensor operators for Jordanian quantum algebra U_h(sl(2)), called
h-symplecton, are introduced and their properties are investigated. It is shown
that many properties of symplecton for Lie algebra sl(2) are extended to
h-symplecton. The h-symplecton is also a basis of irreducible representation of
SL_h(2) dual to U_h(sl(2)). As an application of the procedure used to
construct h-symplecton, we construct the representation bases of SL_h(2) on the
quantum h-plane.
|
[{'version': 'v1', 'created': 'Wed, 7 Jul 1999 06:33:40 GMT'}]
|
2009-10-31
|
[array(['Aizawa', 'N.', ''], dtype=object)]
|
5,395 |
1808.09730
|
Vincent Lostanlen
|
Vincent Lostanlen, Joakim And\'en, Mathieu Lagrange
|
Extended playing techniques: The next milestone in musical instrument
recognition
|
10 pages, 9 figures. The source code to reproduce the experiments of
this paper is made available at:
https://www.github.com/mathieulagrange/dlfm2018
|
Proceedings of the 5th International Workshop on Digital Libraries
for Musicology (DLfM), Paris, France, September 2018. Published by ACM's
International Conference Proceedings Series (ICPS)
| null | null |
cs.SD eess.AS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The expressive variability in producing a musical note conveys information
essential to the modeling of orchestration and style. As such, it plays a
crucial role in computer-assisted browsing of massive digital music corpora.
Yet, although the automatic recognition of a musical instrument from the
recording of a single "ordinary" note is considered a solved problem, automatic
identification of instrumental playing technique (IPT) remains largely
underdeveloped. We benchmark machine listening systems for query-by-example
browsing among 143 extended IPTs for 16 instruments, amounting to 469 triplets
of instrument, mute, and technique. We identify and discuss three necessary
conditions for significantly outperforming the traditional mel-frequency
cepstral coefficient (MFCC) baseline: the addition of second-order scattering
coefficients to account for amplitude modulation, the incorporation of
long-range temporal dependencies, and metric learning using large-margin
nearest neighbors (LMNN) to reduce intra-class variability. Evaluating on the
Studio On Line (SOL) dataset, we obtain a precision at rank 5 of 99.7% for
instrument recognition (baseline at 89.0%) and of 61.0% for IPT recognition
(baseline at 44.5%). We interpret this gain through a qualitative assessment of
practical usability and visualization using nonlinear dimensionality reduction.
|
[{'version': 'v1', 'created': 'Wed, 29 Aug 2018 11:16:30 GMT'}]
|
2018-08-30
|
[array(['Lostanlen', 'Vincent', ''], dtype=object)
array(['Andén', 'Joakim', ''], dtype=object)
array(['Lagrange', 'Mathieu', ''], dtype=object)]
|
5,396 |
1111.2678
|
EPTCS
|
Fang Yu (National Chengchi University, Taiwan), Chao Wang (Virginia
Tech, U.S.)
|
Proceedings 13th International Workshop on Verification of
Infinite-State Systems
| null |
EPTCS 73, 2011
|
10.4204/EPTCS.73
| null |
cs.LO cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This volume contains the proceedings of the 13th International Workshop on
Verification of Infinite-State Systems (INFINITY 2011). The workshop was held
in Taipei, Taiwan on October 10, 2011, as a satellite event to the 9th
International Symposium on Automated Technology for Verification and Analysis
(ATVA). The INFINITY workshop aims at providing a forum for researchers who are
interested in the development of formal methods and algorithmic techniques for
the analysis of systems with infinitely many states, and their application in
automated verification of complex software and hardware systems.
|
[{'version': 'v1', 'created': 'Fri, 11 Nov 2011 07:59:29 GMT'}]
|
2011-11-14
|
[array(['Yu', 'Fang', '', 'National Chengchi University, Taiwan'],
dtype=object)
array(['Wang', 'Chao', '', 'Virginia\n Tech, U.S.'], dtype=object)]
|
5,397 |
0902.0909
|
Emiliano Sali
|
Emilio Ignesti, Stefano Cavalieri, Lorenzo Fini, Emiliano Sali, Marco
V. Tognetti, Roberto Eramo and Roberto Buffa
|
Optical delay control of large-spectral-bandwidth laser pulses
|
Submitted to Optics Letters (January 2009)
| null | null | null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this letter we report the first experimental observation of temporal delay
control of large-spectral-bandwidth multimode laser pulses by means of
electromagnetically induced transparency (EIT). We achieved controllable
retardation with limited temporal distortion of optical pulses with an input
spectral bandwidth of 3.3 GHz. The experimental results compare favorably with
theoretical predictions.
|
[{'version': 'v1', 'created': 'Thu, 5 Feb 2009 14:26:34 GMT'}]
|
2009-02-06
|
[array(['Ignesti', 'Emilio', ''], dtype=object)
array(['Cavalieri', 'Stefano', ''], dtype=object)
array(['Fini', 'Lorenzo', ''], dtype=object)
array(['Sali', 'Emiliano', ''], dtype=object)
array(['Tognetti', 'Marco V.', ''], dtype=object)
array(['Eramo', 'Roberto', ''], dtype=object)
array(['Buffa', 'Roberto', ''], dtype=object)]
|
5,398 |
1308.4867
|
Carlo Cafaro
|
Carlo Cafaro
|
Information geometric complexity of entropic motion on curved
statistical manifolds
|
10 pages, Invited Contribution for the 12th Joint European
Thermodynamics Conference, July 1-5, Brescia, Italy
|
JETC 1, 110-118 (2013)
| null | null |
physics.data-an
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Physical systems behave according to their underlying dynamical equations
which, in turn, can be identified from experimental data. Explaining data
requires selecting mathematical models that best capture the data regularities.
Identifying dynamical equations from the available data and statistical model
selection are both very difficult tasks. Motivated by these fundamental links
among physical systems, dynamical equations, experimental data and statistical
modeling, we discuss in this invited Contribution our information geometric
measure of complexity of geodesic paths on curved statistical manifolds
underlying the entropic dynamics of classical physical systems described by
probability distributions. We also provide several illustrative examples of
entropic dynamical models used to infer macroscopic predictions when only
partial knowledge of the microscopic nature of the system is available.
Finally, we present entropic arguments to briefly address complexity softening
effects due to statistical embedding procedures.
|
[{'version': 'v1', 'created': 'Wed, 21 Aug 2013 13:46:00 GMT'}
{'version': 'v2', 'created': 'Sun, 16 Mar 2014 15:10:33 GMT'}]
|
2014-03-18
|
[array(['Cafaro', 'Carlo', ''], dtype=object)]
|
5,399 |
2210.15804
|
Gayathri Manikutty
|
Sreejith Sasidharan, Pranav Prabha, Devasena Pasupuleti, Anand M Das,
Chaitanya Kapoor, Gayathri Manikutty, Praveen Pankajakshan, Bhavani Rao
|
Handwashing Action Detection System for an Autonomous Social Robot
| null | null |
10.1109/TENCON55691.2022.9977684
| null |
cs.RO cs.AI
|
http://creativecommons.org/licenses/by/4.0/
|
Young children are at an increased risk of contracting contagious diseases
such as COVID-19 due to improper hand hygiene. An autonomous social agent that
observes children while handwashing and encourages good hand washing practices
could provide an opportunity for handwashing behavior to become a habit. In
this article, we present a human action recognition system, which is part of
the vision system of a social robot platform, to assist children in developing
a correct handwashing technique. A modified convolution neural network (CNN)
architecture with Channel Spatial Attention Bilinear Pooling (CSAB) frame, with
a VGG-16 architecture as the backbone is trained and validated on an augmented
dataset. The modified architecture generalizes well with an accuracy of 90% for
the WHO-prescribed handwashing steps even in an unseen environment. Our
findings indicate that the approach can recognize even subtle hand movements in
the video and can be used for gesture detection and classification in social
robotics.
|
[{'version': 'v1', 'created': 'Thu, 27 Oct 2022 23:46:56 GMT'}]
|
2023-06-21
|
[array(['Sasidharan', 'Sreejith', ''], dtype=object)
array(['Prabha', 'Pranav', ''], dtype=object)
array(['Pasupuleti', 'Devasena', ''], dtype=object)
array(['Das', 'Anand M', ''], dtype=object)
array(['Kapoor', 'Chaitanya', ''], dtype=object)
array(['Manikutty', 'Gayathri', ''], dtype=object)
array(['Pankajakshan', 'Praveen', ''], dtype=object)
array(['Rao', 'Bhavani', ''], dtype=object)]
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.