Results 41 to 50 of about 20,136 (171)

Three Approaches to Classical Thermal Field Theory [PDF]

open access: yesAnnals Phys.326:876-910,2011, 2010
In this paper we study three different functional approaches to classical thermal field theory, which turn out to be the classical counterparts of three well-known different formulations of quantum thermal field theory: the Closed-Time Path (CTP) formalism, the Thermofield Dynamics (TFD) and the Matsubara approach.
arxiv   +1 more source

Recent results on heavy quark quenching in ultrarelativistic heavy ion collisions: the impact of coherent gluon radiation [PDF]

open access: yesNucl. Phys. A 910-911 (2013), 301-305, 2012
We present a model for radiative energy loss of heavy quarks in quark gluon plasma which incorporates coherence effects. We then study its consequences on the radiation spectra as well as on the nuclear modification factor of open heavy mesons produced in ultrarelativistic heavy ion collisions.
arxiv   +1 more source

Bohr Density of Simple Linear Group Orbits [PDF]

open access: yesErgod. Th. Dynam. Sys. 35 (2015) 910-914, 2012
We show that any nonzero orbit under a noncompact, simple, irreducible linear group is dense in the Bohr compactification of the ambient space.
arxiv   +1 more source

Refined enumeration of vertices among all rooted ordered $d$-trees [PDF]

open access: yesBulletin of the Korean Mathematical Society, 56(4), 899-910, 2019, 2018
In this paper we enumerate the cardinalities for the set of all vertices of outdegree $\ge k$ at level $\ge \ell$ among all rooted ordered $d$-trees with $n$ edges. Our results unite and generalize several previous works in the literature.
arxiv   +1 more source

Breakdown of Hydrodynamics in the Radial Breathing Mode of a Strongly-Interacting Fermi Gas [PDF]

open access: yesPhys.Rev.A70:051401,2004, 2004
We measure the magnetic field dependence of the frequency and damping time for the radial breathing mode of an optically trapped, Fermi gas of $^6$Li atoms near a Feshbach resonance. The measurements address the apparent discrepancy between the results of Kinast et al., [Phys. Rev. Lett.
arxiv   +1 more source

Comparative study of polyglactin 910 and simple catgut in the formation of intraperitoneal adhesions [PDF]

open access: yesActa Cirurgica Brasileira, 2018
To compare polyglactin 910 and simple catgut sutures for the incidence of intraperitoneal adhesions.Twenty female Wistar rats were placed into two groups. Group 1 received ischemic sutures and Group 2 received polyglactin 910. Five sutures inductive of adhesions in each rat were made.
Biondo-Simões, Maria de Lourdes Pessole   +3 more
openaire   +6 more sources

Time-dependent correlations of inflationary perturbations [PDF]

open access: yesEurophys.Lett. 56 (2001) 904-910, 2001
We show that if the primordial classical perturbations were generated by the gravitational particle creation during inflation, and followed by an evolution of quantum-to-classical transition,the time dependent correlation of these perturbations is long-tailed with a correlation time larger than the Hubble-time.
arxiv   +1 more source

Front formation in a ballistic annihilation model [PDF]

open access: yesPhysica A 229, 515 (1996), 1996
We study a simple one-dimensional model of ballisticaly-controlled annihilation in which the two annihilating species are initially spatially separated. The time dependent properties of the annihilation front are exactly derived. It is shown that the front wanders in a brownian fashion around its average value.
arxiv   +1 more source

Dielectric susceptibility of the Coulomb-glass [PDF]

open access: yesPhys. Rev. B Vol. 59, 910 (1999), 1999
We derive a microscopic expression for the dielectric susceptibility $\chi$ of a Coulomb glass, which corresponds to the definition used in classical electrodynamics, the derivative of the polarization with respect to the electric field. The fluctuation-dissipation theorem tells us that $\chi$ is a function of the thermal fluctuations of the dipole ...
arxiv   +1 more source

On the Stability of a class of Modified Gravitational Models [PDF]

open access: yesInt.J.Theor.Phys.47:898-910,2008, 2007
Motivated by the dark energy issue, a minisuperspace approach to the stability for modified gravitational models in a four dimensional cosmological setting are investigated. Specifically, after revisiting the $f(R)$ case, $R$ being the Ricci curvature, we present a stability condition around a de Sitter solution valid for modified gravitational models ...
arxiv   +1 more source

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