Log-periodic modulation in one-dimensional random walks

Details Log-periodic modulation in one-dimensional random walks Log-periodic modulation in one-dimensional random walks

2008-10-10

arxiv.org/abs/0810.1882v1

Physics

Condensed Matter

Statistical Mechanics

6 pages, 7 figures

Scientific paper

10.1209/0295-5075/85/20008

We have studied the diffusion of a single particle on a one-dimensional lattice. It is shown that, for a self-similar distribution of hopping rates, the time dependence of the mean-square displacement follows an anomalous power law modulated by logarithmic periodic oscillations. The origin of this modulation is traced to the dependence on the length of the diffusion coefficient. Both the random walk exponent and the period of the modulation are analytically calculated and confirmed by Monte Carlo simulations.

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