9.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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57 papers · 1 filter
Granular Shear Flow Dynamics and Forces : Experiment and Continuum Theory
L. Bocquet, W. Losert, D. Schalk +2
We analyze the main features of granular shear flow through experimental measurements in a Couette geometry and a comparison to a locally Newtonian, continuum model of granular flo…
Coulomb plasmas in outer envelopes of neutron stars
A. Y. Potekhin, G. Chabrier, D. G. Yakovlev
Outer envelopes of neutron stars consist mostly of fully ionized, strongly coupled Coulomb plasmas characterized by typical densities about 10^4-10^{11} g/cc and temperatures about…
Hubbard ladders in a magnetic field
D. C. Cabra, A. De Martino, P. Pujol +1
The behavior of a two leg Hubbard ladder in the presence of a magnetic field is studied by means of Abelian bosonization. We predict the appearance of a new (doping dependent) plat…
Effective temperature of an aging powder
M. Sellitto
The aging dynamics and the fluctuation-dissipation relation between the spontaneous diffusion induced by a random noise and the drift motion induced by a small stirring force are n…
Nonequilibrium Critical Dynamics of the 2D XY model
Ludovic Berthier, Peter C. W. Holdsworth, Mauro Sellitto
The nonequilibrium critical dynamics of the 2D XY model is investigated numerically through Monte Carlo simulations and analytically in the spin-wave approximation. We focus in par…
Aging dynamics and density relaxation in granular compaction
Y. Levin, J. J. Arenzon, M. Sellitto
We present an analytical approach to the out of equilibrium dynamics of a class of kinetic lattice gases under gravity. The location of the jamming transition, the critical exponen…
Edwards' measures: a thermodynamic construction for dense granular media and glasses
Alain Barrat, Jorge Kurchan, Vittorio Loreto +1
We present numerical support for the hypothesis that macroscopic observables of dense granular media can be evaluated from averages over typical blocked configurations: we construc…
Statistical mechanics of fluidized granular media: short range velocity correlations
R. Soto, M. Mareschal
A statistical mechanical study of fluidized granular media is presented. Using a special energy injection mechanism, homogeneous fluidized stationary states are obtained. Molecular…
Phase separation in an homogeneous shear flow: Morphology, growth laws and dynamic scaling
Ludovic Berthier
We investigate numerically the influence of an homogeneous shear flow on the spinodal decomposition of a binary mixture by solving the Cahn-Hilliard equation in a two-dimensional g…
Friction in a solid lubricant film
O. M. Braun, M. Peyrard
Molecular dynamics study of a thin (one to five layers) lubricant film between two substrates in moving contact are performed using Langevin equations with an external damping coef…
Infrared Spectra and Spectral Energy Distributions of Late-M- and L-Dwarfs
S. K. Leggett, F. Allard, T. R. Geballe +2
We have obtained 1.0-2.5um spectra at R~600 of 14 disk dwarfs with spectral types M6 to L7. For four of the dwarfs we have also obtained infrared spectra at R~3000 in narrow interv…
Superconducting crossed correlations in ferromagnets: implications for thermodynamics and quantum transport
R. Mélin
It is demonstrated that non local Cooper pairs can propagate in ferromagnetic electrodes having an opposite spin orientation. In the presence of such crossed correlations, the supe…
Glassy systems under time-dependent driving forces: application to slow granular rheology
Ludovic Berthier, Leticia F. Cugliandolo, Jose Luis Iguain
We study the dynamics of a glassy model with infinite range interactions externally driven by an oscillatory force. We find a well-defined transition in the (Temperature-Amplitude-…
Phase separation in a chaotic flow
Ludovic Berthier, Jean-Louis Barrat, Jorge Kurchan
The phase separation between two immiscible liquids advected by a bidimensional velocity field is investigated numerically by solving the corresponding Cahn-Hilliard equation. We s…
Nishimori point in the 2D +/- J random-bond Ising model
A. Honecker, M. Picco, P. Pujol
We study the universality class of the Nishimori point in the 2D +/- J random-bond Ising model by means of the numerical transfer-matrix method. Using the domain-wall free-energy,…
Mass estimates in short-period compact binaries
U. Kolb, A. R. King, I. Baraffe
Using stellar models we investigate the relation between mass and the spectral type of the secondary star in low-mass short-period compact binaries such as cataclysmic variables an…
Persistence distributions for non gaussian markovian processes
Jean Farago
We propose a systematic method to derive the asymptotic behaviour of the persistence distribution, for a large class of stochastic processes described by a general Fokker-Planck eq…
On a conjecture of Atiyah
R. I. Grigorchuk, P. Linnell, T. Schick +1
In this note we explain how the computation of the spectrum of the lamplighter group from \cite{Grigorchuk-Zuk(2000)} yields a counterexample to a strong version of the Atiyah conj…
Experimental study of a granular gas fluidized by vibrations
Eric Falcon, Stephan Fauve, Claude Laroche
We report experimental results on the behavior of an ensemble of inelastically colliding particles, excited by a vibrated piston in a vertical cylinder. When the particle number is…
Deuterium-burning in substellar objects
G. Chabrier, I. Baraffe, F. Allard +1
We consider the depletion of primordial deuterium in the interior of substellar objects as a function of mass, age and absolute magnitude in several photometric passbands. We chara…
On the stability of very massive primordial stars
I. Baraffe, A. Heger, S. E. Woosley
The stability of metal-free very massive stars ( = 0; $M = 120 - 500 \msol$) is analyzed and compared with metal-enriched stars. Such zero-metal stars are unstable to nuclear-po…
Equation of state of fully ionized electron-ion plasmas. II. Extension to relativistic densities and to the solid phase
A. Y. Potekhin, G. Chabrier
The analytic equation of state of nonideal Coulomb plasmas consisting of pointlike ions immersed in a polarizable electron background (physics/9807042) is improved, and its applica…
TiO and HO absorption lines in cool stellar atmospheres
France Allard, Peter H. Hauschildt, David Schwenke
We compare the structures of model atmospheres and synthetic spectra calculated using different line lists for TiO and water vapor. We discuss the effects of different line list co…
Spherically symmetric model atmospheres for low mass pre-Main Sequence stars with effective temperatures between 2000 and 6800 K
France Allard, Peter H. Hauschildt, Andreas Schweitzer
We present a grid of spherically symmetric model atmospheres for young pre-MS stars. This grid spans the parameter range $2000\K \leq \Teff \leq 6800\K$ and $2.0 \leq \logg \leq 3.…