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Nonlinear polarization waves in a two-component Bose-Einstein condensate – Archive ouverte HAL

A. M. KamchatnovY. V. KartashovP.-É. Larré 1 N. Pavloff A. M. Kamchatnov, Y. V. Kartashov, P.-É. Larré, N. Pavloff. Nonlinear polarization waves in a two-component Bose-Einstein condensate. Physical Review A, American Physical Society, 2014, 89, pp.033618. ⟨10.1103/PhysRevA.89.033618⟩. ⟨hal-03538709⟩ 1. LPTMS – Laboratoire de Physique Théorique et Modèles Statistiques

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Velocity filtration and temperature inversion in a system with long-range interactions

Lapo Casetti 1, 2 Shamik Gupta 3 6 pages, 9 figures, epj macros. 2014 Temperature inversion due to velocity filtration, a mechanism originally proposed to explain the heating of the solar corona, is demonstrated to occur also in a simple paradigmatic model with long-range interactions, the Hamiltonian mean-field model. Using molecular dynamics simulations, we show

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Universal statistics of longest lasting records of random walks and Lévy flights

Claude Godreche 1 Satya N. Majumdar 2 Gregory Schehr 2 t14/073. 23 pages, 4 figures, Typos corrected. 2014 We study the record statistics of random walks after $n$ steps, $x_0, x_1,\ldots, x_n$, with arbitrary symmetric and continuous distribution $p(\eta)$ of the jumps $\eta_i = x_i – x_{i-1}$. We consider the age of the records, i.e.

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Universal properties of branching random walks in confined geometries

Clélia De Mulatier 1, 2 Alain Mazzolo 2 Andrea Zoia 2 Europhysics Letters, EDP Science, 2014, 107, pp.30001 Characterizing the occupation statistics of a radiation flow through confined geometries is key to such technological issues as nuclear reactor design and medical diagnosis. This amounts to assessing the distribution of the travelled length $\ell$ and the

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Universal Order and Gap Statistics of Critical Branching Brownian Motion

Kabir Ramola 1 Satya N. Majumdar 1 Gregory Schehr 1 Physical Review Letters, American Physical Society, 2014, 112, pp.210602 We study the order statistics of one dimensional branching Brownian motion in which particles either diffuse (with diffusion constant $D$), die (with rate $d$) or split into two particles (with rate $b$). At the critical point

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Universal covariance formula for linear statistics on random matrices

Fabio Deelan Cunden 1, 2 Pierpaolo Vivo 3 Physical Review Letters, American Physical Society, 2014, 113, pp.070202 We derive an analytical formula for the covariance $\mathrm{Cov}(A,B)$ of two smooth linear statistics $A=\sum_i a(\lambda_i)$ and $B=\sum_i b(\lambda_i)$ to leading order for $N\to\infty$, where $\{\lambda_i\}$ are the $N$ real eigenvalues of a general one-cut random-matrix model with

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Ultrafast switching to a stable hidden topologically protected quantum state in an electronic crystal

L. Stojchevska 1, 2 I. Vaskivskyi 1 T. Mertelj 1 P. Kusar 1 D. Svetin 1 S. Brazovskii 3, 4 D. Mihailovic 1, 2, 5 Science, American Association for the Advancement of Science, 2014, 344, pp.177-180 Hidden states of matter with novel and unusual properties may be created if a system out of equilibrium can

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Topological transition in disordered planar matching: combinatorial arcs expansion

Andrey Y. Lokhov 1 Olga V. Valba 2, 3 Sergei K. Nechaev 1, 4, 3 Mikhail V. Tamm 5, 3 Journal of Statistical Mechanics: Theory and Experiment, IOP Science, 2014, pp.P12004 In this paper, we investigate analytically the properties of the disordered Bernoulli model of planar matching. This model is characterized by a topological phase

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