Eur. Phys. J. B 64, 263-269 (2008)
https://doi.org/10.1140/epjb/e2008-00300-1

Persistence in random walk in composite media

Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India

Received: 5 April 2008
Revised: 13 June 2008
Published online: 23 July 2008

Abstract

We consider a class of inhomogeneous media known as composite media that is often encountered in experimental sciences, and investigate the persistence probability of a random walker in such a system. Analytical and numerical results for the crossover time scales are obtained for a composite system with two homogeneous components and three homogeneous components respectively.