publications

One-dimensional disordered quantum mechanics and Sinai diffusion with random absorbers

Aurélien Grabsch 1 Christophe Texier 2 Yves Tourigny 3 Journal of Statistical Physics, Springer Verlag (Germany), 2014, 155, pp.237-276 We study the one-dimensional Schrödinger equation with a disordered potential of the form $V (x) = \phi(x)^2+\phi'(x) + \kappa(x) $ where $\phi(x)$ is a Gaussian white noise with mean $\mu g$ and variance $g$, and $\kappa(x)$

One-dimensional disordered quantum mechanics and Sinai diffusion with random absorbers Lire la suite »

On the Gap and Time Interval between the First Two Maxima of Long Random Walks

Satya N. Majumdar 1 Philippe Mounaix 2 Gregory Schehr 1 Journal of Statistical Mechanics, 2014, pp.P09013 In the context of order statistics of discrete time random walks (RW), we investigate the statistics of the gap, $G_n$, and the number of time steps, $L_n$, between the two highest positions of a Markovian one-dimensional random walker, starting

On the Gap and Time Interval between the First Two Maxima of Long Random Walks Lire la suite »

Observation of a Strong Atom-Dimer Attraction in a Mass-Imbalanced Fermi-Fermi Mixture

Michael Jag 1, 2 Matteo Zaccanti 1, 3 Marko Cetina 1 Rianne S. Lous 1, 4 Florian Schreck 1 Rudolf Grimm 1, 4 Dmitry S. Petrov 5 Jesper Levinsen 6, 7 Physical Review Letters, American Physical Society, 2014, 112, pp.075302 We investigate a mixture of ultracold fermionic $^{40}$K atoms and weakly bound $^{6}$Li$^{40}$K dimers on

Observation of a Strong Atom-Dimer Attraction in a Mass-Imbalanced Fermi-Fermi Mixture Lire la suite »

Observation of a disordered bosonic insulator from weak to strong interactions

Chiara D Errico 1, 2 Eleonora Lucioni 1, 2 Luca Tanzi 1 Lorenzo Gori 1 Guillaume Roux 3 Ian P. McCulloch 4 Thierry Giamarchi 5 Massimo Inguscio 1, 6 Giovanni Modugno 1, 2 Physical Review Letters, American Physical Society, 2014, 113, pp.095301 We employ ultracold atoms with controllable disorder and interaction to study the paradigmatic

Observation of a disordered bosonic insulator from weak to strong interactions Lire la suite »

Nonlinear waves of polarization in two-component Bose-Einstein condensates

A. M. Kamchatnov 1 Y. V. Kartashov 1 P. -É. Larré 2 N. Pavloff 2 Physical Review A, American Physical Society, 2014, 89, pp.033618 Waves with different symmetries exist in two-component Bose-Einstein condensates (BECs) whose dynamics is described by a system of coupled Gross-Pitaevskii (GP) equations. A first type of waves corresponds to excitations for

Nonlinear waves of polarization in two-component Bose-Einstein condensates Lire la suite »

Nonequilibrium first-order transition in coupled oscillator systems with inertia and noise

Shamik Gupta 1 Alessandro Campa 2 Stefano Ruffo 3 Physical Review E, American Physical Society, 2014, 89, pp.022123 We study the dynamics of a system of coupled oscillators of distributed natural frequencies, by including the features of both thermal noise, parametrized by a temperature, and inertial terms, parametrized by a moment of inertia. For a

Nonequilibrium first-order transition in coupled oscillator systems with inertia and noise Lire la suite »

Non-equilibrium statistical mechanics of the heat bath for two Brownian particles

Caterina De Bacco 1 Fulvio Baldovin 2 Enzo Orlandini 2 Ken Sekimoto 3, 4 Physical Review Letters, American Physical Society, 2014, 112, pp.180605 We propose a new look at the heat bath for two Brownian particles, in which the heat bath as a ‘system’ is both perturbed and sensed by the Brownian particles. Non-local thermal

Non-equilibrium statistical mechanics of the heat bath for two Brownian particles Lire la suite »

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