Isotropization time for non-Markovian CTRWs

Marián Boguñá, Josep M. Porrà, Jaume Masoliver and George H. Weiss

Physica A: Statistical Mechanics and its Applications, 1996, vol. 230, issue 1, 149-155

Abstract: We calculate the mean-squared displacement, , for a CTRW taking into account effects of anisotropic turn angles. When the pausing-time density is a negative exponential one finds a simple expression for which allows an exact determination of the transition time from ballistic to diffusive motion. In the non-Markovian case an exact expression is obtained for the Laplace transform of . The results are useful in the analysis of photon migration in a turbid medium.

Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:230:y:1996:i:1:p:149-155

DOI: 10.1016/0378-4371(96)00101-X

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