9.1k citations
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
74 papers · 1 filter
On convergence of generalized continued fractions and Ramanujan's conjecture
A. A. Glutsyuk
We consider continued fractions \frac{-a_1}{1-\frac{a_2}{1-\frac{a_3}{1-...}}} \label{fr} with real coefficients converging to a limit . S.Ramanujan had stated the theorem…
Ground state and low-lying excitations of the spin-1/2 XXZ model on the kagome lattice at magnetization 1/3
A. Honecker, D. C. Cabra, M. D. Grynberg +5
We study the ground state and low-lying excitations of the S=1/2 XXZ antiferromagnet on the kagome lattice at magnetization one third of the saturation. An exponential number of no…
Free-energy model for fluid helium at high density
Christophe Winisdoerffer, Gilles Chabrier
We present a semi-analytical free-energy model aimed at characterizing the thermodynamic properties of dense fluid helium, from the low-density atomic phase to the high-density ful…
Constant mean curvature foliations of globally hyperbolic spacetimes locally modelled on
Thierry Barbot, Francois Beguin, Abdelghani Zeghib
We prove that any maximal globally hyperbolic spacetime locally modelled on the anti-de Sitter space of dimension 3, and admitting a closed Cauchy surface, admits a time function $…
Ricci curvature for metric-measure spaces via optimal transport
John Lott, Cedric Villani
We define a notion of a measured length space X having nonnegative N-Ricci curvature, for N finite, or having infinity-Ricci curvature bounded below by K, for K a real number. The…
A new Rational Conformal Field Theory extension of the fully degenerate W_{1+\infty}^{(m)}
Gerardo Cristofano, Vincenzo Marotta, Giuliano Niccoli
We found new identities among the Dedekind eta-function, the characters of the W_{m} algebra and those of the level 1 affine Lie algebra su(m)_{1}. They allow to characterize the Z…
Anomalous Roughening of Viscous Fluid Fronts in Spontaneous Imbibition
J. Soriano, A. Mercier, R. Planet +3
We report experiments on spontaneous imbibition of a viscous fluid by a model porous medium in the absence of gravity. The average position of the interface satisfies Washburn's la…
Neel order, ring exchange and charge fluctuations in the half-filled Hubbard model
J. -Y. P. Delannoy, M. J. P. Gingras, P. C. W. Holdsworth +1
We investigate the ground state properties of the two dimensional half-filled one band Hubbard model in the strong (large-U) to intermediate coupling limit ({\it i.e.} away from th…
Canonical analysis of the BCEA topological matter model coupled to gravitation in (2+1) dimensions
Laurent Freidel, R. B. Mann, Eugeniu M. Popescu
We consider a topological field theory derived from the Chern - Simons action in (2+1) dimensions with the I(ISO(2,1)) group,and we investigate in detail the canonical structure of…
Phase Transitions In Compact Stars
Jean Macher, Jurgen Schaffner-Bielich
We report on a three--month research project for undergraduate students about the mass-radius relation of compact stars. The equation of state used is constrained at low densities…
Nonlinear structures and thermodynamic instabilities in a one-dimensional lattice system
Nikos Theodorakopoulos, Michel Peyrard, Robert S. MacKay
The equilibrium states of the discrete Peyrard-Bishop Hamiltonian with one end fixed are computed exactly from the two-dimensional nonlinear Morse map. These exact nonlinear struct…
Semiclassical Propagation of Wavepackets with Real and Complex Trajectories
M. A. M. de Aguiar, M. Baranger, L. Jaubert +2
We consider a semiclassical approximation for the time evolution of an originally gaussian wave packet in terms of complex trajectories. We also derive additional approximations re…
Off equilibrium fluctuations in a polymer glass
L. Buisson, S. Ciliberto
The fluctuation-dissipation relation (FDR) is measured on the dielectric properties a polymer glass (polycarbonate). It is observed that the fluctuation dissipation theorem is stro…
DNA loop statistics and torsional modulus
Vincent Rossetto
The modelling of DNA mechanics under external constraints is discussed. Two analytical models are widely known, but disagree for instance on the value of the torsional modulus. The…
Nonintegrable Schrodinger Discrete Breathers
J. Gomez-Gardenes, L. M. Floria, M. Peyrard +1
In an extensive numerical investigation of nonintegrable translational motion of discrete breathers in nonlinear Schrodinger lattices, we have used a regularized Newton algorithm t…
Characterisation of extrasolar planetary transit candidates
J. Gallardo, D. Minniti, D. Valls-Gabaud +1
The detection of transits is an efficient technique to uncover faint companions around stars. The full characterisation of the companions (M-type stars, brown dwarfs or exoplanets)…
Numerical study of dynamo action at low magnetic Prandtl numbers
Y. Ponty, P. D. Mininni, D. C. Montgomery +3
We present a three--pronged numerical approach to the dynamo problem at low magnetic Prandtl numbers . The difficulty of resolving a large range of scales is circumvented by c…
Quantum three-coloring dimer model and the disruptive effect of quantum glassiness on its line of critical points
Claudio Castelnovo, Claudio Chamon, Christopher Mudry +2
We construct a quantum extension of the (classical) three-coloring model introduced by Baxter [J.Math.Phys.11, 784 (1970)] for which the ground state can be computed exactly along…
The initial mass function : from Salpeter 1955 to 2005
Gilles Chabrier
Fifty years after Ed Salpeter's seminal paper, tremendous progress both on the observational and theoretical sides allow a fairly accurate determination of the Galactic IMF not onl…
Cugliandolo-Kurchan equations for dynamics of Spin-Glasses
Gerard Ben Arous, Amir Dembo, Alice Guionnet
We study the Langevin dynamics for the family of spherical -spin disordered mean-field models and prove that in the limit of system size approaching infinity, the empirical…
The Anti-FPU Problem
Thierry Dauxois, Ramaz Khomeriki, Francesco Piazza +1
We present a detailed analysis of the modulational instability of the zone-boundary mode for one and higher-dimensional Fermi-Pasta-Ulam (FPU) lattices. Following this instability,…
Instability of nondiscrete free subgroups in Lie groups
Alexey Glutsyuk
We study finitely-generated nondiscrete free subgroups in Lie groups. We address the following question first raised by Étienne Ghys: is it always possible to make arbitrarily smal…
Large deviations and stochastic calculus for large random matrices
Alice Guionnet
Large random matrices appear in different fields of mathematics and physics such as combinatorics, probability theory, statistics, operator theory, number theory, quantum field the…
Liquid-glass transition of a fluid confined in a disordered porous matrix: A mode-coupling theory
V. Krakoviack
We derive an extension of the mode coupling theory for the liquid-glass transition to a class of models of confined fluids, where the fluid particles evolve in a disordered array o…