Escape over a fluctuating barrier: The white noise limit

D. L. Stein, C. R. Doering, R. G. Plamer, J. L. Van Hemmen, R. M. McLaughlin

    Research output: Contribution to journalArticlepeer-review


    The authors examine the problem of diffusion over a fluctuating barrier in the limit where the barrier fluctuations are extremely fast compared with all other timescales in the problem. In the white noise limit, the decay of probability from the metastable state is exponential with a characteristic timescale exhibiting Arrhenius behaviour. For small but finite correlation times for the fluctuating part of the potential, the effective barrier increases with the correlation time. Implications for liquids above the glass transition are discussed.

    Original languageEnglish (US)
    Article number004
    Pages (from-to)L203-L208
    JournalJournal of Physics A: General Physics
    Issue number5
    StatePublished - 1990

    ASJC Scopus subject areas

    • Statistical and Nonlinear Physics
    • General Physics and Astronomy
    • Mathematical Physics


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