Arrival time distribution for a driven system containing quenched dichotomous disorder

Details Arrival time distribution for a driven system containing quenched dichotomous disorder Arrival time distribution for a driven system containing quenched dichotomous disorder

2007-06-17

arxiv.org/abs/0706.2510v2

Phys. Rev. E 76, 031101 (2007)

Physics

Condensed Matter

Statistical Mechanics

18 pages, 5 figures

Scientific paper

10.1103/PhysRevE.76.031101

We study the arrival time distribution of overdamped particles driven by a constant force in a piecewise linear random potential which generates the dichotomous random force. Our approach is based on the path integral representation of the probability density of the arrival time. We explicitly calculate the path integral for a special case of dichotomous disorder and use the corresponding characteristic function to derive prominent properties of the arrival time probability density. Specifically, we establish the scaling properties of the central moments, analyze the behavior of the probability density for short, long, and intermediate distances. In order to quantify the deviation of the arrival time distribution from a Gaussian shape, we evaluate the skewness and the kurtosis.

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