Depinning transition at the upper critical dimension

被引：11

作者：

Fedorenko, AA ^{[1
]}

Stepanow, S ^{[1
]}

机构：

[1] Univ Halle Wittenberg, Fachbereich Phys, D-06099 Halle An Der Saale, Germany

来源：

PHYSICAL REVIEW E | 2003年 / 67卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.67.057104

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：

We study the effect of quenched random field disorder on a driven elastic interface close to the depinning transition at the upper critical dimension d(c)=4 using the functional renormalization group. We have found that the displacement correlation function behaves with distance x as (ln xLambda(0))(2/3) for large x. Slightly above the depinning transition the force-velocity characteristics are described by the equation vsimilar tof\ln f\(2/9), while the correlation length behaves as L(v)similar tof(-1/2)\ln f\(1/6), where f=F/F-c-1 is the reduced driving force.

引用

页码：1 / 057104

页数：4

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