DENSE GRANULAR MEDIA AS ATHERMAL GLASSES

Jorge Kurchan
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Jorge Kurchan: P.M.M.H. Ecole Supérieure de Physique et Chimie Industrielles, 10, rue Vauquelin, 75231 Paris CEDEX 05, France

Advances in Complex Systems (ACS), 2001, vol. 04, issue 04, 363-368

Abstract: We briefly describe how mean-field glass models can be extended to the case where the bath and friction are non-thermal. Solving their dynamics, one discovers a temperature with a thermodynamic meaning associated with the slow rearrangements, even though there is no thermodynamic temperature at the level of fast dynamics. This temperature can be shown to match the one defined on the basis of a flat measure over blocked (jammed) configurations. Numerical checks on realistic systems suggest that these features may be valid in general.

Keywords: Granular matter; glass theory; effective temperatures; compaction; aging (search for similar items in EconPapers)
Date: 2001
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DOI: 10.1142/S0219525901000309

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