Mesoscopic model for spontaneous symmetry breaking in shaken granular
material
Michel Droz
Department of Theoretical Physics, University of Geneva, 24 quai E. Ansermet, CH 1211 Geneve 4, Switzerland
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A mesocsopic model describing spatial separation of granular material will be
discussed. In this dynamical model,
in a certain range of parameters spontaneous symmetry breaking takes place and
equipartitioning of the granular material into two or more compartments isbroken. Both
dynamical and stationary properties of the model will be analyzed and its predictions compared
with experimental data.
Relations with the so-called zero-range stochastic processes will be discussed.
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