Sum of exit times in a series of two metastable states

Regular Article

DOI: 10.1140/epjst/e2017-70070-6

Cite this article as:
Cirillo, E.N.M., Nardi, F.R. & Spitoni, C. Eur. Phys. J. Spec. Top. (2017). doi:10.1140/epjst/e2017-70070-6
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Part of the following topical collections:
  1. Aspects of Statistical Mechanics and Dynamical Complexity

Abstract

The problem of not degenerate in energy metastable states forming a series in the framework of reversible finite state space Markov chains is considered. Metastability has been widely studied both in the mathematical and physical literature. Metastable states arises close to a first order phase transition, when the system can be trapped for a long time (exponentially long with respect to the inverse of the temperature) before switching to the thermodynamically stable phase. In this paper, under rather general conditions, we give a sharp estimate of the exit time from a metastable state in a presence of a second metastable state that must be necessarily visited by the system before eventually reaching the stable phase. In this framework we give a sharp estimate of the exit time from the metastable state at higher energy and, on the proper exponential time scale, we prove an addition rule. As an application of the theory, we study the Blume-Capel model in the zero chemical potential case.

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© EDP Sciences and Springer 2017

Authors and Affiliations

  1. 1.Dipartimento di Scienze di Base e Applicate per l’Ingegneria, Sapienza Università di RomaRomaItaly
  2. 2.Department of Mathematics and Computer ScienceEindhoven University of TechnologyEindhovenThe Netherlands
  3. 3.Department of MathematicsCD UtrechtThe Netherlands

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