Anomalous diffusion in a running sandpile model

被引：52

作者：

Carreras, BA ^{[1
]}

Lynch, VE

Newman, DE

Zaslavsky, GM

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] NYU, Courant Inst Math Sci, New York, NY 10012 USA

[3] NYU, Dept Phys, New York, NY 10013 USA

来源：

PHYSICAL REVIEW E | 1999年 / 60卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.60.4770

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

To explore the character of underlying transport in a sandpile, we have followed the motion of tracer particles. Moments of the distribution function of the particle positions, [/x(t) - x(o)/(n)] = D(0)t(nv(n)), are determined as a function of the elapsed time. The numerical results show that the transport mechanism for distances less than the sandpile length is superdiffusive with an exponent v(n) close to 0.75, for n < 1. [S1063-651X(99)17410-5].

引用

页码：4770 / 4778

页数：9

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