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Diffusion in fluctuating media: resonant activation

✍ Scribed by Jorge A. Revelli; Carlos E. Budde; Horacio S. Wio

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 209 KB
Volume: 342
Category: Article
ISSN: 0378-4371
DOI: 10.1016/j.physa.2004.04.052

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✦ Synopsis

We study the dynamics of a system of particles di using in a uctuating medium: a lattice which can be in two states, with transitions among them induced by a combination of a periodic deterministic and a stochastic process. We characterize the problem studying the mean ÿrst passage time (MFPT), the probability of return to the origin (Ps 0 ), and the number of visited lattice sites. We observe a double resonant activation-like phenomenon when we plot the MFPT and Ps 0 as functions of the intensity of the transition rate stochastic component.

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