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
39 papers · 1 filter
Structural and Electronic Properties of a Wide-gap Semiconductor Alloy: Zn_xMg_{1-x}S_ySe_{1-y}
Antonino Marco Saitta, Stefano de Gironcoli, Stefano Baroni
The structural properties of the solid solutions are determined by a combination of the computational alchemy and the cluster expansion methods with Monte…
Mobility and Reactivity of Discrete Breathers
S. Aubry, T. Cretegny
Breathers may be mobile close to an instability threshold where the frequency of a pinning mode vanishes. The translation mode is a marginal mode that is a solution of the lineariz…
Isometry groups and geodesic foliations of Lorentz manifolds. Part II: Geometry of analytic Lorentz manifolds with large isometry groups
Abdelghani Zeghib
This is Part II of a series on noncompact isometry groups of Lorentz manifolds. We have introduced in Part I, a compactification of these isometry groups, and called ``bi-polarized…
Dynamical phase diagram of the dc-driven underdamped Frenkel-Kontorova chain
Maxim Paliy, Oleg Braun, Thierry Dauxois +1
Multistep dynamical phase transition from the locked to the running state of atoms in response to a dc external force is studied by MD simulations of the generalized Frenkel-Kontor…
Isometry groups and geodesic foliations of Lorentz manifolds. Part I: Foundations of Lorentz dynamics
Abdelghani Zeghib
This is the first part of a series on non-compact groups acting isometrically on compact Lorentz manifolds. This subject was recently investigated by many authors. In the present p…
Conformal field theory approach to gapless 1D fermion systems and application to the edge excitations of nu = 1/(2p+1) quantum Hall sequences
P. Degiovanni, Ch. Chaubet, R. Melin
We present a comprehensive study of the effective Conformal Field Theory (CFT) describing the low energy excitations of a gas of spinless interacting fermions on a circle in the ga…
Two-component plasma in a gravitational field: Thermodynamics
Gabriel Tellez
We revisit the model of the two-component plasma in a gravitational field, which mimics charged colloidal suspensions. We concentrate on the computation of the grand potential of t…
Algebraic approach to q-deformed supersymmetric variants of the Hubbard model with pair hoppings
Daniel Arnaudon
We construct two quantum spin chains Hamiltonians with quantum sl(2|1) invariance. These spin chains define variants of the Hubbard model and describe electron models with pair hop…
On non-linear superfield versions of the vector-tensor multiplet
E. Ivanov, E. Sokatchev
We propose a harmonic superspace description of the non-linear vector-tensor N=2 multiplet. We show that there exist two inequivalent version: the old one in which one of the vecto…
Fluctuation theorem for stochastic dynamics
Jorge Kurchan
The fluctuation theorem of Gallavotti and Cohen holds for finite systems undergoing Langevin dynamics. In such a context all non-trivial ergodic theory issues are by-passed, and th…
Localization and Equipartition of Energy in the beta-FPU Chain : Chaotic Breathers
Thierry Cretegny, Thierry Dauxois, Stefano Ruffo +1
The evolution towards equipartition in the -FPU chain is studied considering as initial condition the highest frequency mode. Above an analytically derived energy threshold, thi…
Generating function of correlators in the sl_2 Gaudin model
E. K. Sklyanin
For the sl_2 Gaudin model (degenerated quantum integrable XXX spin chain) an exponential generating function of correlators is calculated explicitely. The calculation relies on the…
Nonstandard Drinfeld-Sokolov reduction
F. Delduc, L. Feher, L. Gallot
Subject to some conditions, the input data for the Drinfeld-Sokolov construction of KdV type hierarchies is a quadruplet $(\A,Λ, d_1, d_0)$, where the are -gradations of…
From quantum to elliptic algebras
J. Avan, L. Frappat, M. Rossi +1
It is shown that the elliptic algebra at the critical level c=-2 has a multidimensional center containing some trace-like operators t(z). A family o…
A combined XAS and XRD Study of the High-Pressure Behaviour of GaAsO4 Berlinite
James Badro, Philippe Gillet, Paul F. McMillan +2
Combined X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) experiments have been carried out on GaAsO4 (berlinite structure) at high pressure and room temperature. XA…
Scattering of first and second sound waves by quantum vorticity in superfluid Helium
C. Coste, F. Lund
We study the scattering of first and second sound waves by quantum vorticity in superfluid Helium using two-fluid hydrodynamics. The vorticity of the superfluid component and the s…
Galactic Globular Cluster Metallicity Scale from the Ca II Triplet. I. Catalog
G. A. Rutledge, J. E. Hesser, P. B. Stetson +5
We have obtained 2640 CCD spectra with resolution ~4 Angstrom in the region 7250-9000 Angstroms for 976 stars lying near the red giant branches in color-magnitude diagrams of 52 Ga…
Melting and Pressure-Induced Amorphization of Quartz
James Badro, Philippe Gillet, Jean-Louis Barrat
It has recently been shown that amorphization and melting of ice were intimately linked. In this letter, we infer from molecular dynamics simulations on the SiO2 system that the ex…
Euclidean SYM Theories by Time Reduction and Special Holonomy Manifolds
Matthias Blau, George Thompson
Euclidean supersymmetric theories are obtained from Minkowskian theories by performing a reduction in the time direction. This procedure elucidates certain mysterious features of Z…
Canonically invariant formulation of Langevin and Fokker-Planck Equations
O. Cepas, J. Kurchan
We present a canonically invariant form for the generalized Langevin and Fokker-Planck equations. We discuss the role of constants of motion, and the construction of conservative s…
New algebras from the elliptic algebra
J. Avan, L. Frappat, M. Rossi +1
We construct operators t(z) in the elliptic algebra introduced by Foda et al. . They close an exchange algebra when p^m=q^{c+2} for m integer. In ad…
Internal temperatures and cooling of neutron stars with accreted envelopes
A. Y. Potekhin, G. Chabrier, D. G. Yakovlev
The relationships between the effective surface (T_e) and internal temperatures of neutron stars (NSs) with and without accreted envelopes are calculated for T_e > 5\times10^4 K us…
Aging in lattice-gas models with constrained dynamics
Jorge Kurchan, Luca Peliti, Mauro Sellitto
We investigate the aging behavior of lattice-gas models with constrained dynamics in which particle exchange with a reservoir is allowed. Such models provide a particularly simple…
Poisson structures on the center of the elliptic algebra A_{p,q}(sl(2)_c)
J. Avan, L. Frappat, M. Rossi +1
It is shown that the elliptic algebra A_{p,q}(sl(2)_c) has a non trivial center at the critical level , generalizing the result of Reshetikhin and Semenov-Tian-Shansky for tr…