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Paul Soulé 1, 2 Marcel Franz 2, 3 4 pages, 2 figures; Version 2 : references added, minor changes. 2014 Electrons in graphene with heavy adatoms (such as In or Tl) have been predicted to form a 2D topological insulator phase with a substantial spectral gap potentially suitable for future practical applications. In order to […]

Michael Knap 1, 2, 3 Charles J. M. Mathy 3, 4 Martin Ganahl 2 Mikhail B. Zvonarev 5 Eugene Demler 4 Physical Review Letters, American Physical Society, 2014, 112, pp.015302 We investigate the motion of an impurity particle injected with finite velocity into an interacting one-dimensional quantum gas. Using large-scale numerical simulations based on matrix

Matthieu Barbier 1 Emmanuel Trizac 1 Journal of Statistical Physics, Springer Verlag (Germany), 2014, 154, pp.1365-1390 We consider the mass heterogeneity in a gas of polydisperse hard particles as a key to optimizing a dynamical property: the kinetic relaxation rate. Using the framework of the Boltzmann equation, we study the long time approach of a

Isaac Pérez Castillo 1 Eytan Katzav 2 Pierpaolo Vivo 3, 4 Physical Review E, American Physical Society, 2014, 90, pp.050103 We study the statistics of the condition number $\kappa=\lambda_{\mathrm{max}}/\lambda_{\mathrm{min}}$ (the ratio between largest and smallest squared singular values) of $N\times M$ Gaussian random matrices. Using a Coulomb fluid technique, we derive analytically and for large

Ricardo Marino 1 Satya N. Majumdar 1 Grégory Schehr 1 Pierpaolo Vivo 1 Physical Review Letters, American Physical Society, 2014, 112, pp.254101 We consider $N\times N$ Gaussian random matrices, whose average density of eigenvalues has the Wigner semi-circle form over $[-\sqrt{2},\sqrt{2}]$. For such matrices, using a Coulomb gas technique, we compute the large $N$ behavior

Apostolos Karadimitrakis 1 Aris L. Moustakas 1, 2 Pierpaolo Vivo 3 France. 60, pp.4370, 2014, Information theory IEEE Transactions on MIMO processing techniques in fiber optical communications have been proposed as a promising approach to meet increasing demand for information throughput. In this context, the multiple channels correspond to the multiple modes and/or multiple cores

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 $\kappa(x)$

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

Jie Lin 1 Alaa Saade 1 Edan Lerner 1 Alberto Rosso 2 Matthieu Wyart 1 Europhysics Letters, EDP Science, 2014, 105, pp.26003 We study the stability of amorphous solids, focusing on the distribution P(x) of the local stress increase x that would lead to an instability. We argue that this distribution is singular P(x)x^{\theta}, where

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