SPEEDING-UP OF FLUCTUATIONS IN DRIVEN DIFFUSIVE SYSTEMS WITH QUENCHED DISORDER

被引：14

作者：

BECKER, V

JANSSEN, HK

机构：

来源：

EUROPHYSICS LETTERS | 1992年 / 19卷 / 01期

关键词：

D O I：

10.1209/0295-5075/19/1/003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By field-theoretic renormalization group methods we show that a disordered diffusive system with a single conserved (particle-) density which is subjected to an external driving force surprisingly exhibits a superdiffusional behaviour for spatial dimensions d less-than-or-equal-to 4 at a special density, at which no overall drift of density fluctuations arises.

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页码：13 / 17

页数：5

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