Current reversals in a rocking ratchet: Dynamical versus symmetry-breaking mechanisms

被引：43

作者：

Cubero, D. ^{[1
]}

Lebedev, V. ^{[2
]}

Renzoni, F. ^{[2
]}

机构：

[1] Univ Seville, Dept Fis Aplicada 1, EUP, Seville 41011, Spain

[2] UCL, Dept Phys & Astron, London WC1E 6BT, England

来源：

PHYSICAL REVIEW E | 2010年 / 82卷 / 04期

关键词：

BROWNIAN MOTORS; CHAOTIC TRANSPORT; DRIVEN;

D O I：

10.1103/PhysRevE.82.041116

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：

Directed transport in ratchets is determined by symmetry breaking in a system out of equilibrium. A hallmark of rocking ratchets is current reversals: an increase in the rocking force changes the direction of the current. In this work for a biharmonically driven spatially symmetric rocking ratchet we show that a class of current reversal is precisely determined by symmetry breaking, thus creating a link between dynamical and symmetry-breaking mechanisms.

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页数：4

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