Publication : t01/184
Metastable states in glassy systems
Biroli G. (Laboratoire de Physique Théorique (LPT), Ecole Normale Supérieure (ENS), 24 rue Lhomond, F-75005 Paris, FRANCE)Kurchan J. (Laboratoire de Physique et de Mécanique des Milieux Hétérogènes (PMMH), Ecole Supérieure de Physique et Chimie Industrielles (ESPCI), 10, rue Vauquelin, F-75231 Paris, FRANCE)
Abstract:Année de publication : 2001
Truly stable metastable states are an artifact of the mean-field approximation or the zero temperature limit. If such appealing concepts in glass theory as configurational entropy are to have a meaning beyond these approximations, one needs to cast them in a form involving states with finite lifetimes.
Starting from elementary examples and using results of Gaveau and Schulman, we propose a simple expression for the configurational entropy and revisit the question of taking flat averages over metastable states. The construction is applicable to finite dimensional systems, and we explicitly show that for simple mean-field glass models it recovers, justifies and generalises the known results. The calculation emphasises the appearance of new dynamical order parameters.
Publication extérieure au service
Revue : Phys. Rev. E 64 016101 (2001)
DOI : 10.1103/PhysRevE.64.016101
Preprint : arXiv:cond-mat/0005499
Lien : http://link.aps.org/abstract/PRE/v64/p016101
PACS : 64.60.-i
Langue : Anglais
NB : [14 pp.]
Fichier(s) à télécharger :
publi.pdf
