Boundary driven zero-range processes in random media

Details Boundary driven zero-range processes in random media Boundary driven zero-range processes in random media

2007-07-02

arxiv.org/abs/0707.0195v1

Physics

Condensed Matter

Statistical Mechanics

23 pages

Scientific paper

10.1007/s10955-007-9361-6

The stationary states of boundary driven zero-range processes in random media with quenched disorder are examined, and the motion of a tagged particle is analyzed. For symmetric transition rates, also known as the random barrier model, the stationary state is found to be trivial in absence of boundary drive. Out of equilibrium, two further cases are distinguished according to the tail of the disorder distribution. For strong disorder, the fugacity profiles are found to be governed by the paths of normalized $\alpha$-stable subordinators. The expectations of integrated functions of the tagged particle position are calculated for three types of routes.

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