publications

L. Samaj 1, 2, E. Trizac 2 Europhysics Letters 98 (2012) 36004 We study the ground state structure of electronic-like bilayers, where different phases compete upon changing the inter-layer separation or particle density. New series representations with exceptional convergence properties are derived for the exact Coulombic energies under scrutiny. The complete phase transition scenario –including critical phenomena– can subsequently be […]

A. M. Kamchatnov 1, N. Pavloff 2 Physical Review A 85 (2012) 033603 We study the flow of a quasi-one-dimensional Bose-Einstein condensate incident onto a narrow obstacle. We consider a configuration in which a dispersive shock is formed and propagates upstream away from the obstacle while the downstream flow reaches a supersonic velocity, generating a sonic horizon. Conditions for

Dong E. Liu 1, Sébastien Burdin 2, Harold U. Baranger 1, Denis Ullmo 3 EPL 97 (2012) 17006 We study mesoscopic fluctuations in a system in which there is a continuous connection between two distinct Fermi liquids, asking whether the mesoscopic variation in the two limits is correlated. The particular system studied is an Anderson impurity coupled to a finite mesoscopic reservoir described

Matthieu Barbier 1, Emmanuel Trizac 1 Journal of Statistical Physics 149 (2012) 317-341 Our interest goes to the behavior of a tracer particle, accelerated by a constant and uniform external field, when the energy injected by the field is redistributed through collision to a bath of unaccelerated particles. A non equilibrium steady state is thereby reached. Solutions of a

D. J. Papoular 1, 2, S. Bize 3, A. Clairon 3, H. Marion 3, S. J. Kokkelmans 4, G. V. Shlyapnikov 1, 5 Physical Review A 86 (2012) 040701 We have observed Feshbach resonances for 133Cs atoms in two different hyperfine states at ultra-low static magnetic fields by using an atomic fountain clock. The extreme sensitivity of our setup allows for high signal-to-noise-ratio observations at densities of only 2*10^7

Schehr, G. Journal of Statistical Physics149 (3) (2012) 385-410

Paul Soulé 1, Thierry Jolicoeur 1 Physical Review B (Condensed Matter) 85 (2012) 155116 We study fractional quantum Hall states in the cylinder geometry with open boundaries. By truncating the Coulomb interactions between electrons we show that it is possible to construct infinitely many exact eigenstates including the ground state, quasiholes, quasielectrons and the magnetoroton branch of excited states.

G. Bimonte 1, T. Emig 2 Physical Review Letters 109 (2012) 160403 Analytic expressions that describe Casimir interactions over the entire range of separations have been limited to planar surfaces. Here we derive analytic expressions for the classical or high-temperature limit of Casimir interactions between two spheres (interior and exterior configurations), including the sphere-plane geometry as a special case,

Pasquier, C.R., Kang, N., Salameh, B., Auban-Senzier, P., Jerome, D., Brazovskii, S. Physica B407 (2012) 1806-1809

Simone Pigolotti 1, 2, Sebastian Bernhardsson 1, 3, Jeppe Juul 1, Gorm Galster 1, Pierpaolo Vivo 4 Physical Review Letters 108 (2012) 088701 In lowest unique bid auctions, $N$ players bid for an item. The winner is whoever places the \emph{lowest} bid, provided that it is also unique. We use a grand canonical approach to derive an analytical expression for the equilibrium distribution of strategies. We then