Direct numerical observation of anomalous diffusion in random media
Victor Pham; Michael W Deem; Victor Pham; Chemical Engineering Department, University of California, Los Angeles, CA 90095-1592, USA; Michael W Deem; Chemical Engineering Department, University of California, Los Angeles, CA 90095-1592, USA
Журнал:
Journal of Physics A: Mathematical and General
Дата:
1998-09-04
Аннотация:
We present computer simulations of anomalous diffusion, , in two dimensions. The Monte Carlo calculations are in excellent agreement with previous renormalization group calculations. Interestingly, use of a high-quality pseudorandom number generator is necessary to observe the anomalous diffusion. A linear-feedback, shift-register method leads to incorrect, superdiffusive motion of the random walkers.
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