Stability measures in metastable states with Gaussian colored noise

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Abstract

We present a study of the escape time from a metastable state of an overdamped Brownian particle in thepresence of colored noise generated by Ornstein-Uhlenbeck process. We analyze the role of the correlationtime on the enhancement of the mean first passage time through a potential barrier and on the behavior of themean growth rate coefficient as a function of the noise intensity. We observe the noise-enhanced stability effectfor all the initial unstable states used and for all values of the correlation time c investigated. We candistinguish two dynamical regimes characterized by weak and strong correlated noises, depending on the valueof c with respect to the relaxation time of the system.
Lingua originaleEnglish
pagine (da-a)041110-1-041110-6
Numero di pagine6
RivistaPHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS
Volume80
Stato di pubblicazionePublished - 2009

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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