Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR3.4k papers
- Lyon 1 UniversitéFR2k papers
- Centre de Recherche Astrophysique de LyonFR1.3k papers
- Laboratoire de Physique de l'ENS de LyonFR1.3k papers
- Université de LyonFR537 papers
- Unité de Mathématiques Pures et AppliquéesFR399 papers
- European Southern ObservatoryCL328 papers
- Laboratoire de l'Informatique du ParallélismeFR328 papers
- Sorbonne UniversitéFR283 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR269 papers
- Université Grenoble AlpesFR236 papers
- Institut national de recherche en sciences et technologies du numériqueFR233 papers
35 papers · 1 filter
Spontaneous magnetization of the XXZ Heisenberg spin-1/2 chain
A. G. Izergin, N. Kitanine, J. M. Maillet +1
Determinant representations of form factors are used to represent the spontaneous magnetization of the Heisenberg XXZ chain (Delta >1) on the finite lattice as the ratio of two det…
Scattering of dislocated wavefronts by vertical vorticity and the Aharonov-Bohm effect II: Dispersive waves
Christophe Coste, Fernando Lund
Previous results on the scattering of surface waves by vertical vorticity on shallow water are generalized to the case of dispersive water waves. Dispersion effects are treated per…
Scattering of dislocated wavefronts by vertical vorticity and the Aharonov-Bohm effect I: Shallow water
Christophe Coste, Makoto Umeki, Fernando Lund
When a surface wave interacts with a vertical vortex in shallow water the latter induces a dislocation in the incident wavefronts that is analogous to what happens in the Aharonov-…
Boundary S-matrix for the Gross-Neveu Model
A. De Martino, M. Moriconi
We study the scattering theory for the Gross-Neveu model on the half-line. We find the reflection matrices for the elementary fermions, and by fusion we compute the ones for the tw…
Mean-field theory of temperature cycling experiments in spin-glasses
Leticia F. Cugliandolo, Jorge Kurchan
We study analytically the effect of temperature cyclings in mean-field spin-glasses. In accordance with real experiments, we obtain a strong reinitialization of the dynamics on dec…
Ionization equilibrium and equation of state of hydrogen plasmas in strong magnetic fields
A. Y. Potekhin, G. Chabrier, Yu. A. Shibanov +1
We study hydrogen plasmas at magnetic fields B ~ 10^{12}-10^{13} Gauss, densities ~ 10^{-3}-10^3 g/cc and temperatures T ~ 10^{5.5}-10^{6.5} K, typical of photospheres of middle-ag…
Multiscale velocity correlation in turbulence: experiments, numerical simulations, synthetic signals
R. Benzi, L. Biferale, G. Ruiz-Chavarria +2
Multiscale correlation functions in high Reynolds number experimental turbulence, numerical simulations and synthetic signals are investigated. Fusion Rules predictions as they ari…
Formation of disclination lines near a free nematic interface
Jordi Ignes-Mullol, Jean Baudry, Lubor Lejcek +1
We have studied the nucleation and the physical properties of a -1/2 wedge disclination line near the free surface of a confined nematic liquid crystal. The position of the disclin…
Frictional Mechanics of Wet Granular Material
J. -C. Geminard, W. Losert, J. P. Gollub
The mechanical response of a wet granular layer to imposed shear is studied experimentally at low applied normal stress. The granular material is immersed in water and the shear is…
Sur les espaces-temps homogenes
Abdelghani Zeghib
Here, we classify Lie groups acting isometrically on compact Lorentz manifolds, and in particular we describe the geometric structure of compact homogeneous Lorentz manifolds.
Numerical Study of Hawking Radiation Photosphere Formation around Microscopic Black Holes
James M. Cline, Michael Mostoslavsky, Geraldine Servant
Heckler has recently argued that the Hawking radiation emitted from microscopic black holes has sufficiently strong interactions above a certain critical temperature that it forms…
A comparison of two discrete mKdV equations
C. Chandre
We consider here two discrete versions of the modified KdV equation. In one case, some solitary wave solutions, Bäcklund transformations and integrals of motion are known. In the o…
A Langevin equation for the energy cascade in fully-developed turbulence
Philippe Marcq, Antoine Naert
Experimental data from a turbulent jet flow is analysed in terms of an additive, continuous stochastic process where the usual time variable is replaced by the scale. We show that…
A coalescence model for freely decaying two-dimensional turbulence
Emmanuel Trizac
We propose a ballistic coalescence model (punctuated-Hamiltonian approach) mimicking the fusion of vortices in freely decaying two-dimensional turbulence. A temporal scaling behavi…
Bounds on the existence of neutron rich nuclei in neutron star interiors
F. Douchin, P. Haensel
We address the question concerning the maximum density, at which nuclei (and more generally -- nuclear structures) can exist in neutron star interiors. An absolute upper bound to s…
First-principles calculation of the thermal properties of silver
Jianjun Xie, Stefano de Gironcoli, Stefano Baroni +1
The thermal properties of silver are calculated within the quasi-harmonic approximation, by using phonon dispersions from density-functional perturbation theory, and the pseudopote…
Infrared Colors at the Stellar/Substellar Boundary
S. K. Leggett, F. Allard, P. H. Hauschildt
We present new infrared photometry for 61 halo and disk stars around the stellar/substellar boundary. These data are combined with available optical photometry and astrometric data…
Equation of state of fully ionized electron-ion plasmas
G. Chabrier, A. Y. Potekhin
Thermodynamic quantities of Coulomb plasmas consisting of point-like ions immersed in a compressible, polarizable electron background are calculated for ion charges Z=1 to 26 and f…
Thermal properties of slow dynamics
Leticia F. Cugliandolo, Jorge Kurchan
The limit of small entropy production is reached in relaxing systems long after preparation, and in stationary driven systems in the limit of small driving power. Surprisingly, for…
The incidence of nonradial pulsation in the lambda Bootis stars
D. A. Bohlender, J. -F. Gonzalez, J. M. Matthews
We have completed a high-resolution, high-signal-to-noise, spectroscopic survey of the northern members of the peculiar lambda Boo stars in order to investigate the frequency of th…
Optical Spectroscopy of DENIS Mini-survey Brown Dwarf Candidates
C. G. Tinney, X. Delfosse, T. Forveille +1
We present optical (6500-9200A) spectroscopy of eight cool dwarfs detected in a 231 square degree ``Mini-survey'' of the Deep NEar Infrared Survey (DENIS) data. We are able to conf…
Discrete Space-Time Volume for 3-Dimensional BF Theory and Quantum Gravity
Laurent Freidel, Kirill Krasnov
The Turaev-Viro state sum invariant is known to give the transition amplitude for the three dimensional BF theory with cosmological term, and its deformation parameter hbar is rela…
On the High-Pressure Phase Transition in GaPO4
James Badro, Jean-Paul Itie, Alain Polian
X-ray diffraction (XRD) experiments have been carried out on quartz-like GaPO4 at high pressure and room temperature. A transition to a high pressure disordered crystalline form oc…
Non-linear Poisson-Boltzmann Theory for Swollen Clays
R. J. F. Leote de Carvalho, E. Trizac, J. P Hansen
The non-linear Poisson-Boltzmann equation for a circular, uniformly charged platelet, confined together with co- and counter-ions to a cylindrical cell, is solved semi-analytically…