Specific features of the effect of time dependent field on subdiffusing particles. The stochastic Liouville equation approach

Details Specific features of the effect of time dependent field on subdiffusing particles. The stochastic Liouville equation approach Specific features of the effect of time dependent field on subdiffusing particles. The stochastic Liouville equation approach

2008-08-22

arxiv.org/abs/0808.3031v1

Physics

Condensed Matter

Statistical Mechanics

5 pages

Scientific paper

We analyze the effect of time dependent external field on non-Markovian migration described by the continuous time random walk (CTRW) approach. The rigorous method of treating the problem is proposed which is based on the Markovian representations of the CTRW approach and field modulation. The method is applied to the case of subdiffusive migration in which the exact formulas for the first and second moments of spatial distribution are derived. For oscillating external field they predict unusual dependence of the first moment on oscillation phase and anomalous field dependent contribution to

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