 Enhancement of stability in randomly switching potential with metastable stateB. Spagnolo (), A. Dubkov and N. Agudov The European Physical Journal B: Condensed Matter and Complex Systems, 2004, vol. 40, issue 3, 273-281 Abstract: The overdamped motion of a Brownian particle in randomly switching piece-wise metastable linear potential shows noise enhanced stability (NES): the noise stabilizes the metastable system and the system remains in this state for a longer time than in the absence of white noise. The mean first passage time (MFPT) has a maximum at a finite value of white noise intensity. The analytical expression of MFPT in terms of the white noise intensity, the parameters of the potential barrier, and of the dichotomous noise is derived. The conditions for the NES phenomenon and the parameter region where the effect can be observed are obtained. The mean first passage time behaviors as a function of the mean flipping rate of the potential for unstable and metastable initial configurations are also analyzed. We observe the resonant activation phenomenon for initial metastable configuration of the potential profile. Copyright Springer-Verlag Berlin/Heidelberg 2004 Date: 2004 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:40:y:2004:i:3:p:273-281 Ordering information: This journal article can be ordered from DOI: 10.1140/epjb/e2004-00268-8 Access Statistics for this article The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences |
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