Direct numerical observation of anomalous diffusion in random media

被引：10

作者：

Pham, V ^{[1
]}

Deem, MW ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Chem Engn, Los Angeles, CA 90095 USA

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1998年 / 31卷 / 35期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1088/0305-4470/31/35/005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present computer simulations of anomalous diffusion, [r(2)(t)] similar to at(1-8), 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.

引用

页码：7235 / 7247

页数：13

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