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Article Dans Une Revue Physical Review Letters Année : 2005

Effect of rare events on out of equilibrium relaxation

Résumé

This letter reports experimental and numerical results on particle dynamics in an out-of-equilibrium granular medium. We observed two distinct types of grain motion: the well known cage motion , during which a grain is always surrounded by the same neighbors, and low probability \"jumps\", during which a grain moves significantly more relative to the others. These observations are similar to the results obtained for other out-of-equilibrium systems (glasses, colloidal systems, etc.). Although such jumps are extremely rare, by inhibiting them in numerical simulations we demonstrate that they play a significant role in the relaxation of out-of-equilibrium systems
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Dates et versions

hal-00016063 , version 1 (16-12-2005)

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Philippe Ribière, Patrick Richard, Renaud Delannay, Daniel Bideau, Masahiro Toiya, et al.. Effect of rare events on out of equilibrium relaxation. Physical Review Letters, 2005, 95, pp.268001. ⟨10.1103/PhysRevLett.95.268001⟩. ⟨hal-00016063⟩
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