SELF-ORGANIZED CRITICALITY IN A STICK-SLIP PROCESS

被引：179

作者：

FEDER, HJS

FEDER, J

机构：

[1] Department of Physics, University of Oslo, Box 1048, Blindern

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.66.2669

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The force required to pull sandpaper across a carpet fluctuates. Slips (sudden drops of magnitude M of the force) are observed to have a probability N(M > m) approximately m(-b) with b congruent-to 0.8. The power spectrum of force fluctuations has a low-frequency 1/f behavior. Thus our system reaches a self-organized critical state with fractal scaling in both the spatial and the time domain. We introduce a new nonconservative cellular automaton that exhibits self-organized criticality and describes these observations well.

引用

页码：2669 / 2672

页数：4

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