Relaxation height in energy landscapes : an application to multiple metastable states

E.N.M. Cirillo, F.R. Nardi

Research output: Contribution to journalArticleAcademicpeer-review

17 Citations (Scopus)

Abstract

The study of systems with multiple (not necessarily degenerate) metastable states presents subtle difficulties from the mathematical point of view related to the variational problem that has to be solved in these cases. We prove sufficient conditions to identify multiple metastable states. Since this analysis typically involves non-trivial technical issues, we give different conditions that can be chosen appropriately depending on the specific model under study. We show how these results can be used to attack the problem of multiple metastable states via the use of the modern approaches to metastability. We finally apply these general results to the Blume–Capel model for a particular choice of the parameters for which the model happens to have two multiple not degenerate in energy metastable states. We estimate in probability the time for the transition from the metastable states to the stable state. Moreover we identify the set of critical configurations that represent the minimal gate for the transition.
Original languageEnglish
Pages (from-to)1080-1114
Number of pages43
JournalJournal of Statistical Physics
Volume150
Issue number6
DOIs
Publication statusPublished - 2013

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