2012

Bertrand Georgeot 1, Olivier Giraud 2 Europhysics Letters 97, 6 (2012) 68002 We study the game of go from a complex network perspective. We construct a directed network using a suitable definition of tactical moves including local patterns, and study this network for different datasets of professional tournaments and amateur games. The move distribution follows Zipf’s law and the […]

Jasper Franke 1, Satya N. Majumdar 2 Journal of Statistical Mechanics: Theory and Experiment (2012) P05024 We study analytically, in one dimension, the survival probability $P_{s}(t)$ up to time $t$ of an immobile target surrounded by mutually noninteracting traps each performing a continuous-time random walk (CTRW) in continuous space. We consider a general CTRW with symmetric and continuous (but

Anthony Perret 1, Zoran Ristivojevic 2, Pierre Le Doussal 2, Gregory Schehr 1, Kay J. Wiese 2 Physical Review Letters 109 (2012) 157205 We study both analytically, using the renormalization group (RG) to two loop order, and numerically, using an exact polynomial algorithm, the disorder-induced glass phase of the two-dimensional XY model with quenched random symmetry-breaking fields and without vortices. In the super-rough glassy phase,

O. Bohigas 1, J. X. de Carvalho 2, 3, M. P. Pato 2 Physical Review E 86 (2012) 031118 The statistical properties of trajectories of eigenvalues of Gaussian complex matrices whose Hermitian condition is progressively broken are investigated. It is shown how the ordering on the real axis of the real eigenvalues is reflected in the structure of the trajectories and also

A. Puglisi 1, A. Gnoli 2, 3, G. Gradenigo 4, A. Sarracino 5, D. Villamaina 6 Journal of Chemical Physics 136 (2012) 014704 Velocity and density structure factors are measured over a hydrodynamic range of scales in a horizontal quasi-2d fluidized granular experiment, with packing fractions $\phi\in[10%,40%]$. The fluidization is realized by vertically vibrating a rough plate, on top of which particles perform a Brownian-like horizontal

L. Samaj 1, 2, E. Trizac 2 Contributions to Plasma Physics 52 (2012) 53 We propose a strong-coupling analysis of a polarizable planar interface, in the spirit of a recently introduced Wigner-Crystal formulation. The system is made up of two moieties: a semi-infinite medium (z

Samaj, L., Trizac, E. Physica B407 (2012) 1953-1957

Florent Krzakala 1, Marc Mézard 2, François Sausset 2, Yifan Sun 1, 3, Lenka Zdeborová 4 Physical Review X 2 (2012) 021005 Compressed sensing is triggering a major evolution in signal acquisition. It consists in sampling a sparse signal at low rate and later using computational power for its exact reconstruction, so that only the necessary information is measured. Currently used reconstruction techniques are, however, limited

J. M. Harrison 1, K. Kirsten 1, C. Texier 2, 3 Journal of Physics A: Mathematical and Theoretical 45 (2012) 125206 A derivation of the spectral determinant of the Schrödinger operator on a metric graph is presented where the local matching conditions at the vertices are of the general form classified according to the scheme of Kostrykin and Schrader. To formulate the

Jean-Sebastien Bernier 1, 2, Dario Poletti 3, Peter Barmettler 3, Guillaume Roux 4, Corinna Kollath 1, 5 Physical Review A 85 (2012) 033641 We investigate the dynamics of Mott-insulating regions of a trapped bosonic gas as the interaction strength is changed linearly with time. The bosonic gas considered is loaded into an optical lattice and confined to a parabolic trapping potential. Two situations are addressed: the formation