Possible test of the thermodynamic approach to granular media |
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Authors: | Dean David S Lefèvre Alexandre |
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Institution: | IRSAMC, Laboratoire de Physique Quantique, Université Paul Sabatier, Toulouse, France. |
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Abstract: | We study the steady state distribution of the energy of the Sherrington-Kirkpatrick model driven by a tapping mechanism which mimics the mechanically driven dynamics of granular media. The dynamics consists of two phases: a zero temperature relaxation phase which leads the system to a metastable state, then a tapping which excites the system thus reactivating the relaxational dynamics. Numerically, we investigate whether the distribution of the energies of the blocked states obtained agrees with a simple canonical form of the Edwards measure. It is found that this canonical measure is in good agreement with the dynamically measured energy distribution. A possible experimental test of the Edwards measure based on the study here is proposed. |
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