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Title: Analytically solvable model of a driven system with quenched dichotomous disorder
Authors: Denisov, S.I.
Kostur, M.
Denisova, E.S.
Hänggi, P. 
Issue Date: 27-Jun-2007
Citation: Denisov, S.I., Kostur, M., Denisova, E.S., Hänggi, P. (2007-06-27). Analytically solvable model of a driven system with quenched dichotomous disorder. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 75 (6) : -. ScholarBank@NUS Repository.
Abstract: We perform a time-dependent study of the driven dynamics of overdamped particles that are placed in a one-dimensional, piecewise linear random potential. This setup of spatially quenched disorder then exerts a dichotomous varying random force on the particles. We derive the path integral representation of the resulting probability density function for the position of the particles and transform this quantity of interest into the form of a Fourier integral. In doing so, the evolution of the probability density can be investigated analytically for finite times. It is demonstrated that the probability density contains both a δ -singular contribution and a regular part. While the former part plays a dominant role at short times, the latter rules the behavior at large evolution times. The slow approach of the probability density to a limiting Gaussian form as time tends to infinity is elucidated in detail. © 2007 The American Physical Society.
Source Title: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
ISSN: 15393755
DOI: 10.1103/PhysRevE.75.061123
Appears in Collections:Staff Publications

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