Time scales for transitions between free-energy minima of a dense hard-sphere system

Chandan Dasgupta, Oriol T. Valls

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Time scales associated with activated transitions between glassy metastable states of a free-energy functional appropriate for a dense hard-sphere system are calculated by using a new Monte Carlo method for the local density variables. In particular, we calculate the time the system, initially placed in a shallow glassy minimum of the free energy, spends in the neighborhood of this minimum before making a transition to the basin of attraction of another free-energy minimum. This time scale is found to increase as the average density is increased. We find a crossover density near which this time scale increases very sharply and becomes longer than the longest times accessible in our simulation. This time scale does not show any evidence of increasing with sample size.

Original languageEnglish (US)
Pages (from-to)2603-2612
Number of pages10
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume53
Issue number3
DOIs
StatePublished - Jan 1 1996

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