Directed transport in periodically rocked random sawtooth potentials

被引:9
作者
Denisov, S. I. [1 ,2 ]
Lyutyy, T. V. [2 ]
Denisova, E. S. [2 ]
Haenggi, P. [3 ,4 ,5 ]
Kantz, H. [1 ]
机构
[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[2] Sumy State Univ, UA-40007 Sumy, Ukraine
[3] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany
[4] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore
[5] Natl Univ Singapore, Ctr Computat Sci & Engn, Singapore 117542, Singapore
来源
PHYSICAL REVIEW E | 2009年 / 79卷 / 05期
关键词
random processes; transport processes; CHAOTIC TRANSPORT; BROWNIAN MOTORS; RATCHETS; DRIVEN;
D O I
10.1103/PhysRevE.79.051102
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 directed transport of overdamped particles in a periodically rocked random sawtooth potential. Two transport regimes can be identified which are characterized by a nonzero value of the average velocity of particles and a zero value, respectively. The properties of directed transport in these regimes are investigated both analytically and numerically in terms of a random sawtooth potential and a periodically varying driving force. Precise conditions for the occurrence of transition between these two transport regimes are derived and analyzed in detail.
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页数:7
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