Bistability and noise-enhanced velocity of rolling motion

被引：7
|
作者：
Pöschel, T
Brilliantov, NV
Zaikin, A
机构：
[1] Inst Biochem, D-10117 Berlin, Germany
[2] Univ Potsdam, Inst Phys, D-14469 Potsdam, Germany
[3] Univ Exeter, Dept Math Sci, Exeter EX4 4QE, Devon, England
来源：
EUROPHYSICS LETTERS | 2005年 / 69卷 / 03期
关键词：
D O I：
10.1209/epl/i2004-10350-y
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the motion of a hard cylinder rolling down a soft, inclined plane. The cylinder is subjected to a viscous drag force and stochastic fluctuations due to the surrounding rnedium. In a wide range of parameters we observe bistability of the rolling velocity. In dependence on the parameters, increasing noise level may lead to increasing or decreasing average velocity of the cylinder. The approximative analytical theory agrees with numerical results.
引用
收藏
页码：371 / 377
页数：7
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