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
收藏
页码：7235 / 7247
页数：13
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