DYNAMIC ROUGHENING OF DIRECTED LINES

被引：83

作者：

ERTAS, D

KARDAR, M

机构：

[1] Department of Physics, Massachusetts Institute of Technology, Cambridge

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.69.929

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the fluctuations of a stretched string, e.g., a vortex line, moving in a random medium. A pair of nonlinear equations are proposed to describe the evolution of longitudinal and transverse coordinates. The dynamic scaling of the fluctuations is studied analytically (by renormalization group) and numerically. In most cases the fluctuations are superdiffusive, governed by a dynamic exponent z = 3/2.

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页码：929 / 932

页数：4

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