Time transformation for random walks in the quenched trap model

Details Time transformation for random walks in the quenched trap model Time transformation for random walks in the quenched trap model

2010-12-28

arxiv.org/abs/1012.5786v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

Diffusion in the quenched trap model is investigated with an approach we call weak subordination breaking. We map the problem onto Brownian motion and show that the operational time is ${\cal S}_\alpha = \sum_{x=-\infty} ^\infty (n_x)^\alpha$ where $n_x$ is the visitation number at site $x$ . In the limit of zero temperature we recover the renormalization group (RG) solution found by Monthus. Our approach is an alternative to RG capable of dealing with any disorder strength.

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