id stringlengths 9 16 | submitter stringlengths 5 34 | authors stringlengths 7 3.47k | title stringlengths 7 179 | comments stringlengths 7 268 ⌀ | journal-ref stringlengths 18 86 ⌀ | doi stringlengths 14 53 ⌀ | report-no stringclasses 21
values | categories stringlengths 5 55 | license stringclasses 6
values | abstract stringlengths 36 1.9k | versions listlengths 1 5 | update_date timestamp[ms]date 2007-05-23 00:00:00 2025-10-08 00:00:00 | authors_parsed listlengths 1 264 | vector listlengths 1.02k 1.02k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1406.4031 | John ZuHone | J. A. ZuHone (NASA/GSFC, U. Maryland), M. W. Kunz (Princeton), M.
Markevitch (NASA/GSFC), J. M. Stone (Princeton), V. Biffi (SISSA) | The Effect of Anisotropic Viscosity on Cold Fronts in Galaxy Clusters | v1: 20 pages, 16 figures, submitted to the Astrophysical Journal. v2:
fixed some typos. v3: version accepted by referee, 21 pages, 18 figures | null | 10.1088/0004-637X/798/2/90 | null | astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cold fronts -- contact discontinuities in the intracluster medium (ICM) of
galaxy clusters -- should be disrupted by Kelvin-Helmholtz (K-H) instabilities
due to the associated shear velocity. However, many observed cold fronts appear
stable. This opens the possibility to place constraints on microphysical
mechanisms that stabilize them, such as the ICM viscosity and/or magnetic
fields. We performed exploratory high-resolution simulations of cold fronts
arising from subsonic gas sloshing in cluster cores using the grid-based Athena
MHD code, comparing the effects of isotropic Spitzer and anisotropic Braginskii
viscosity (expected in a magnetized plasma). Magnetized simulations with full
Braginskii viscosity or isotropic Spitzer viscosity reduced by a factor f ~ 0.1
are both in qualitative agreement with observations in terms of suppressing K-H
instabilities. The RMS velocity of turbulence within the sloshing region is
only modestly reduced by Braginskii viscosity. We also performed unmagnetized
simulations with and without viscosity and find that magnetic fields have a
substantial effect on the appearance of the cold fronts, even if the initial
field is weak and the viscosity is the same. This suggests that determining the
dominant suppression mechanism of a given cold front from X-ray observations
(e.g. viscosity or magnetic fields) by comparison with simulations is not
straightforward. Finally, we performed simulations including anisotropic
thermal conduction, and find that including Braginskii viscosity in these
simulations does not significant affect the evolution of cold fronts; they are
rapidly smeared out by thermal conduction, as in the inviscid case.
| [
{
"version": "v1",
"created": "Mon, 16 Jun 2014 14:32:55 GMT"
},
{
"version": "v2",
"created": "Tue, 17 Jun 2014 13:15:02 GMT"
},
{
"version": "v3",
"created": "Fri, 2 Jan 2015 22:14:42 GMT"
}
] | 2015-06-22T00:00:00 | [
[
"ZuHone",
"J. A.",
"",
"NASA/GSFC, U. Maryland"
],
[
"Kunz",
"M. W.",
"",
"Princeton"
],
[
"Markevitch",
"M.",
"",
"NASA/GSFC"
],
[
"Stone",
"J. M.",
"",
"Princeton"
],
[
"Biffi",
"V.",
"",
"SISSA"
]
] | [
0.05063373222947121,
0.7731376886367798,
0.36385512351989746,
0.2687605321407318,
0.17402464151382446,
0.3728005588054657,
-0.25930485129356384,
-0.45345035195350647,
-0.7185103297233582,
1.4370883703231812,
-0.21542266011238098,
0.40953439474105835,
0.36019060015678406,
-1.463034987449646... |
hep-th/0502135 | Eugeny Babichev | E. Babichev and M. Kachelriess | Constraining cosmic superstrings with dilaton emission | 10 pages, 3 figures; v2: Fig 1 is corrected | Phys.Lett. B614 (2005) 1-6 | 10.1016/j.physletb.2005.03.053 | MPP-2005-11 | hep-th astro-ph | null | Brane inflation predicts the production of cosmic superstrings with tension
10^{-12}<G\mu<10^{-7}. Superstring theory predicts also the existence of a
dilaton with a mass that is at most of the order of the gravitino mass. We show
that the emission of dilatons imposes severe constraints on the allowed
evolution of a cosmic superstring network. In particular, the detection of
gravitational wave burst from cosmic superstrings by LIGO is only possible if
the typical length of string loops is much smaller than usually assumed.
| [
{
"version": "v1",
"created": "Tue, 15 Feb 2005 13:06:49 GMT"
},
{
"version": "v2",
"created": "Fri, 6 May 2005 15:28:54 GMT"
}
] | 2009-11-11T00:00:00 | [
[
"Babichev",
"E.",
""
],
[
"Kachelriess",
"M.",
""
]
] | [
0.017591338604688644,
0.5194905400276184,
0.1187666803598404,
0.22069598734378815,
0.030957818031311035,
-0.06627986580133438,
-0.5818605422973633,
-0.314287930727005,
-0.2788306176662445,
1.2162905931472778,
0.715506374835968,
-0.4696340560913086,
0.01868201233446598,
-0.5993373990058899,... |
1410.7099 | Valery A. Lunts | Michael Larsen and Valery A. Lunts | Rationality of motivic zeta function and cut-and-paste problem | Comments and welcome | null | null | null | math.AG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Assuming the positive solution to the Cut-and-paste problem we prove that the
motivic zeta function remains irrational after inverting L.
| [
{
"version": "v1",
"created": "Sun, 26 Oct 2014 23:51:08 GMT"
}
] | 2014-10-28T00:00:00 | [
[
"Larsen",
"Michael",
""
],
[
"Lunts",
"Valery A.",
""
]
] | [
-0.08941242843866348,
-0.14187252521514893,
0.1205560714006424,
-0.13542914390563965,
-0.24502742290496826,
-0.5071630477905273,
0.14165917038917542,
0.3501659631729126,
-0.3673376441001892,
0.6034976840019226,
0.7034836411476135,
0.36299994587898254,
-0.11105001717805862,
-0.1092810705304... |
1403.4348 | Mathieu Huruguen | Mathieu Huruguen (UBC) | Special reductive groups over an arbitrary field | 21 pages. Comments welcome | null | null | null | math.AG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A linear algebraic group G defined over a field k is called special if every
G-torsor over every field extension of k is trivial. In 1958 Grothendieck
classified special groups in the case where the base field is algebraically
closed. In this paper we describe the derived subgroup and the coradical of a
special reductive group over an arbitrary field k. We also classify special
semisimple groups, special reductive groups of inner type and special
quasisplit reductive groups over an arbitrary field k.
| [
{
"version": "v1",
"created": "Tue, 18 Mar 2014 05:27:55 GMT"
}
] | 2014-03-19T00:00:00 | [
[
"Huruguen",
"Mathieu",
"",
"UBC"
]
] | [
-0.40063655376434326,
-0.1825607419013977,
0.1951315850019455,
-0.5764011144638062,
0.38285452127456665,
-0.024485934525728226,
-0.1867503672838211,
-0.0465875081717968,
-1.0058684349060059,
0.766144871711731,
0.6608047485351562,
0.3743205964565277,
0.07131081074476242,
-0.2716599404811859... |
2311.03878 | Andrej Vilfan | Abdallah Daddi-Moussa-Ider, Ramin Golestanian and Andrej Vilfan | Hydrodynamic efficiency limit on a Marangoni surfer | 17 pages, 5 figures | J. Fluid Mech. 986 (2024) A32 | 10.1017/jfm.2024.363 | null | physics.flu-dyn cond-mat.soft | http://creativecommons.org/licenses/by/4.0/ | A Marangoni surfer is an object embedded in a gas-liquid interface, propelled
by gradients in surface tension. We derive an analytical theorem for the lower
bound on the viscous dissipation by a Marangoni surfer in the limit of small
Reynolds and capillary numbers. The minimum dissipation can be expressed with
the reciprocal difference between drag coefficients of two passive bodies of
the same shape as the Marangoni surfer, one in a force-free interface and the
other in an interface with surface incompressibility. The distribution of
surface tension that gives the optimal propulsion is given by the surface
tension of the solution for the incompressible surface and the flow is a
superposition of both solutions. For a surfer taking the form of a thin
circular disk, the minimum dissipation is $16\mu a V^2$, giving a Lighthill
efficiency of $1/3$. This places the Marangoni surfers among the
hydrodynamically most efficient microswimmers.
| [
{
"version": "v1",
"created": "Tue, 7 Nov 2023 10:51:26 GMT"
},
{
"version": "v2",
"created": "Tue, 13 Feb 2024 12:25:06 GMT"
}
] | 2024-05-15T00:00:00 | [
[
"Daddi-Moussa-Ider",
"Abdallah",
""
],
[
"Golestanian",
"Ramin",
""
],
[
"Vilfan",
"Andrej",
""
]
] | [
0.0007983006653375924,
0.7216638326644897,
0.4743877351284027,
-0.12439768761396408,
0.6179934740066528,
0.30079466104507446,
-0.14166104793548584,
-0.25131484866142273,
0.18604806065559387,
1.1251379251480103,
0.36300212144851685,
-0.10157109797000885,
-0.14706279337406158,
0.061985436826... |
cond-mat/0512286 | Masayuki Hase Oka | M. O. Hase and S. R. Salinas | Dynamics of a mean spherical model with competing interactions | null | J. Phys. A 39, 4875 (2006) | 10.1088/0305-4470/39/18/007 | null | cond-mat.soft | null | The Langevin dynamics of a $d$-dimensional mean spherical model with
competing interactions along $m\leq d$ directions of a hypercubic lattice is
analysed. After a quench at high temperatures, the dynamical behaviour is
characterized by two distinct time scales associated with stationary and aging
regimes. The asymptotic expressions for the autocorrelation and response
functions, in supercritical, critical, and subcritical cases, were calculated.
Aging effects, which are known to be present in the ferromagnetic version of
this model system, are not affected by the introduction of competing
interactions.
| [
{
"version": "v1",
"created": "Tue, 13 Dec 2005 22:19:24 GMT"
},
{
"version": "v2",
"created": "Fri, 24 Mar 2006 16:00:52 GMT"
},
{
"version": "v3",
"created": "Thu, 20 Apr 2006 18:19:43 GMT"
}
] | 2009-11-11T00:00:00 | [
[
"Hase",
"M. O.",
""
],
[
"Salinas",
"S. R.",
""
]
] | [
0.1598203182220459,
0.06561078131198883,
0.5516332983970642,
0.9878893494606018,
-0.16542519629001617,
0.0050888098776340485,
-0.0984777957201004,
-0.5160592794418335,
-0.16074100136756897,
1.0563775300979614,
0.6202998161315918,
0.07099148631095886,
0.3396316468715668,
-0.6684819459915161... |
2404.01213 | Weijun Zhang | Jing Gao and Weijun Zhang and Zhitao Zhang | Bifurcation on Fully Nonlinear Elliptic Equations and Systems | comments are welcome! | null | null | null | math.AP math.FA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the following fully nonlinear elliptic equations
\begin{equation*} \left\{\begin{array}{rl}
\left(S_{k}(D^{2}u)\right)^{\frac1k}=\lambda f(-u) & in\quad\Omega \\ u=0 &
on\quad \partial\Omega\\ \end{array} \right. \end{equation*} and coupled
systems \begin{equation*} \left\{\begin{array}{rl}
(S_{k}(D^{2}u))^\frac1k=\lambda g(-u,-v) & in\quad\Omega \\
(S_{k}(D^{2}v))^\frac1k=\lambda h(-u,-v) & in\quad\Omega \\ u=v=0 & on\quad
\partial\Omega\\ \end{array} \right. \end{equation*} dominated by $k$-Hessian
operators, where $\Omega$ is a $(k$-$1)$-convex bounded domain in
$\mathbb{R}^{N}$, $\lambda$ is a non-negative parameter,
$f:\left[0,+\infty\right)\rightarrow\left[0,+\infty\right)$ is a continuous
function with zeros only at $0$ and $g,h:\left[0,+\infty\right)\times
\left[0,+\infty\right)\rightarrow \left[0,+\infty\right)$ are continuous
functions with zeros only at $(\cdot,0)$ and $(0,\cdot)$. We determine the
interval of $\lambda$ about the existence, non-existence, uniqueness and
multiplicity of $k$-convex solutions to the above problems according to various
cases of $f,g,h$, which is a complete supplement to the known results in
previous literature. In particular, the above results are also new for
Laplacian and Monge-Amp\`ere operators. We mainly use bifurcation theory,
a-priori estimates, various maximum principles and technical strategies in the
proof.
| [
{
"version": "v1",
"created": "Mon, 1 Apr 2024 16:12:56 GMT"
}
] | 2024-04-02T00:00:00 | [
[
"Gao",
"Jing",
""
],
[
"Zhang",
"Weijun",
""
],
[
"Zhang",
"Zhitao",
""
]
] | [
0.3141026496887207,
1.2564321756362915,
0.42219606041908264,
0.2692869305610657,
0.5304092764854431,
-0.054818447679281235,
-0.6157596707344055,
0.18535000085830688,
-0.3160598874092102,
1.4664987325668335,
0.6495243906974792,
0.6584003567695618,
0.1318337768316269,
-0.40190285444259644,
... |
1410.7453 | Cody Hyndman | Cody B. Hyndman and Menachem Wenger | GMWB Riders in a Binomial Framework - Pricing, Hedging, and
Diversification of Mortality Risk | 41 pages, 11 figures; This paper combines a previous version titled
"Pricing and Hedging GMWB Riders in a Binomial Framework" (arXiv:1410.7453v1)
and the working paper titled "Diversification of mortality risk in GMWB rider
pricing and hedging" | null | null | null | q-fin.PR q-fin.CP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a binomial model for a guaranteed minimum withdrawal benefit
(GMWB) rider to a variable annuity (VA) under optimal policyholder behaviour.
The binomial model results in explicitly formulated perfect hedging strategies
funded using only periodic fee income. We consider the separate perspectives of
the insurer and policyholder and introduce a unifying relationship.
Decompositions of the VA and GMWB contract into term-certain payments and
options representing the guarantee and early surrender features are extended to
the binomial framework. We incorporate an approximation algorithm for Asian
options that significantly improves efficiency of the binomial model while
retaining accuracy. Several numerical examples are provided which illustrate
both the accuracy and the tractability of the binomial model. We extend the
binomial model to include policy holder mortality and death benefits. Pricing,
hedging, and the decompositions of the contract are extended to incorporate
mortality risk. We prove limiting results for the hedging strategies and
demonstrate mortality risk diversification. Numerical examples are provided
which illustrate the effectiveness of hedging and the diversification of
mortality risk under capacity constraints with finite pools.
| [
{
"version": "v1",
"created": "Mon, 27 Oct 2014 22:42:48 GMT"
},
{
"version": "v2",
"created": "Wed, 6 Jul 2016 16:30:53 GMT"
}
] | 2016-07-07T00:00:00 | [
[
"Hyndman",
"Cody B.",
""
],
[
"Wenger",
"Menachem",
""
]
] | [
0.9055721759796143,
0.7465723752975464,
0.032342035323381424,
0.2988818287849426,
0.5417390465736389,
-0.5963738560676575,
0.06720321625471115,
0.019874656572937965,
0.3874662220478058,
0.5839244723320007,
0.6627089977264404,
0.019864078611135483,
-0.07058007270097733,
-0.19207631051540375... |
2207.05555 | Changjian Fu | Changjian Fu, Shengfei Geng, Pin Liu | Exchange graphs of cluster algebras have the non-leaving-face property | null | Bulletin London Math. Soc. (2023), 55, 2062-2069 | 10.1112/blms.12836 | null | math.RA math.CO | http://creativecommons.org/licenses/by-nc-nd/4.0/ | The claim in the title is proved.
| [
{
"version": "v1",
"created": "Sat, 9 Jul 2022 02:14:38 GMT"
}
] | 2024-02-15T00:00:00 | [
[
"Fu",
"Changjian",
""
],
[
"Geng",
"Shengfei",
""
],
[
"Liu",
"Pin",
""
]
] | [
-0.22580884397029877,
0.2567819654941559,
0.23341251909732819,
0.37145671248435974,
0.3987490236759186,
0.38988974690437317,
-0.2252008020877838,
-0.33072540163993835,
1.2619935274124146,
0.6438068747520447,
0.2876146733760834,
-0.04953556880354881,
0.5980073809623718,
0.30112987756729126,... |
1707.05340 | Meng Wang | Meng Wang, Jiaheng Zhang, Jun Liu, Wei Hu, Sen Wang, Xue Li, Wenqiang
Liu | "PDD Graph: Bridging Electronic Medical Records and Biomedical Knowledge\n Graphs via Entity Linkin(...TRUNCATED) | 9 pages,5 figures,accepted by ISWC 2017 | null | null | null | cs.DB cs.AI cs.IR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | " Electronic medical records contain multi-format electronic medical data that\nconsist of an abund(...TRUNCATED) | [{"version":"v1","created":"Mon, 17 Jul 2017 18:04:27 GMT"},{"version":"v2","created":"Mon, 24 Jul 2(...TRUNCATED) | 2017-07-25T00:00:00 | [["Wang","Meng",""],["Zhang","Jiaheng",""],["Liu","Jun",""],["Hu","Wei",""],["Wang","Sen",""],["Li",(...TRUNCATED) | [0.13316108286380768,-0.012788924388587475,-0.3342873156070709,0.6081944108009338,0.1068903952836990(...TRUNCATED) |
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