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12 papers · 1 filter
Energy flux distribution in a two-temperature Ising model
Vivien Lecomte, Zoltan Racz, Frederic van Wijland
The nonequilibrium steady state of an infinite-range Ising model is studied. The steady state is obtained by dividing the spins into two groups and attaching them to two heat baths…
X-ray observation of micro-failures in granular piles approaching an avalanche
Alexandre Kabla, Georges Debregeas, Jean-Marc Di Meglio +1
An X-ray imaging technique is used to probe the stability of 3-dimensional granular packs in a slowly rotating drum. Well before the surface reaches the avalanche angle, we observe…
The song of the dunes as a self-synchronized instrument
S. Douady, A. Manning, P. Hersen +4
Since Marco Polo (1) it has been known that some sand dunes have the peculiar ability of emitting a loud sound with a well defined frequency, sometimes for several minutes. The ori…
Two-dimensional flows of foam: drag exerted on circular obstacles and dissipation
Benjamin Dollet, Florence Elias, Catherine Quilliet +3
A Stokes experiment for foams is proposed. It consists in a two-dimensional flow of a foam, confined between a water subphase and a top plate, around a fixed circular obstacle. We…
Finite dimensional quantizations of the (q,p) plane : new space and momentum inequalities
Jean-Pierre Gazeau, François-Xavier Josse-Michaux, Pascal Monceau
We present a N-dimensional quantization a la Berezin-Klauder or frame quantization of the complex plane based on overcomplete families of states (coherent states) generated by the…
Two-dimensional flow of foam around an obstacle: force measurements
Benjamin Dollet, Florence Elias, Catherine Quilliet +3
A Stokes experiment for foams is proposed. It consists in a two-dimensional flow of a foam, confined between a water subphase and a top plate, around a fixed circular obstacle. We…