Transient response of a Brownian particle with general damping

被引：4

作者：

Chen, LY ^{[1
]}

Nash, PL ^{[1
]}

机构：

[1] Univ Texas, Dept Phys, San Antonio, TX 78249 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2004年 / 120卷 / 07期

关键词：

D O I：

10.1063/1.1642586

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We study the transient response of a Brownian particle with general damping in a system of metastable potential well. The escape rate is evaluated as a function of time after an infinite wall is removed from the potential barrier. It takes a relaxation time for the rate to reach its limit value and this rate relaxation time differs from the relaxation time of the majority of the probability around the bottom of the potential well. The rate relaxation time is found to depend on the temperature as well as the damping constant. It involves the diffusion time and the instanton time, in general agreement with recent studies of the overdamped case by Bier [Phys. Rev. E 59, 6422 (1999)]. (C) 2004 American Institute of Physics.

引用

页码：3348 / 3352

页数：5

共 15 条

[1] Finding transition paths and rate coefficients through accelerated Langevin dynamics [J].