Volume 53, Number 3, February 2001
|Page(s)||297 - 303|
|Published online||01 December 2003|
Memory in aged granular media
Laboratoire de Physique Théorique,
Unité Mixte de Recherche UMR 8627
Bâtiment 210, Université de Paris-Sud -
91405 Orsay Cedex, France
2 Università degli Studi di Roma "La Sapienza", Dipartimento di Fisica P.le A. Moro 5, 00185 Roma, Italy and INFM, Unità di Roma 1 - Roma, Italy
Accepted: 30 November 2000
Stimulated by recent experimental results, we simulate "temperature"-cycling experiments in a model for the compaction of granular media. We report on the existence of two types of memory effects: short-term dependence on the history of the sample, and long-term memory for highly compact (aged) systems. A natural interpretation of these results is provided by the analysis of the density heterogeneities.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 81.05.Rm – Porous materials; granular materials / 75.10.Nr – Spin-glass and other random models
© EDP Sciences, 2001
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