Signatures of Noise Enhanced Stability in Metastable States

Details Signatures of Noise Enhanced Stability in Metastable States Signatures of Noise Enhanced Stability in Metastable States

2005-07-29

arxiv.org/abs/cond-mat/0507728v2

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevE.72.061110

The lifetime of a metastable state in the transient dynamics of an overdamped Brownian particle is analyzed, both in terms of the mean first passage time and by means of the mean growth rate coefficient. Both quantities feature non monotonic behaviors as a function of the noise intensity, and are independent signatures of the noise enhanced stability effect. They can therefore be alternatively used to evaluate and estimate the presence of this phenomenon, which characterizes metastability in nonlinear physical systems.

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