Diffusion in fluctuating media: resonant activation

Jorge A. Revelli, Carlos E. Budde and Horacio S. Wio

Physica A: Statistical Mechanics and its Applications, 2004, vol. 342, issue 1, 1-8

Abstract: We study the dynamics of a system of particles diffusing in a fluctuating 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 first passage time (MFPT), the probability of return to the origin (Ps0), and the number of visited lattice sites. We observe a double resonant activation-like phenomenon when we plot the MFPT and Ps0 as functions of the intensity of the transition rate stochastic component.

Keywords: Random-walk; Fluctuating media; Resonant activation (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:342:y:2004:i:1:p:1-8

DOI: 10.1016/j.physa.2004.04.052

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