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A possible experimental test of the thermodynamic approach to granular media

D. S. Dean·A. Lefèvre
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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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D. S. Dean, A. Lefèvre. 2002-12-12. A possible experimental test of the thermodynamic approach to granular media. https://doi.org/10.1103/physrevlett.90.198301

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