Kramers turnover in class of thermodynamically open systems: Effect of interplay of nonlinearity and noises

被引：2

作者：

Shit, Anindita ^{[1
]}

Chattopadhyay, Sudip ^{[1
]}

Banik, Suman Kumar ^{[2
]}

Chaudhuri, Jyotipratim Ray ^{[3
]}

机构：

[1] Bengal Engn & Sci Univ, Dept Chem, Sibpur 711103, Howrah, India

[2] Bose Inst, Dept Chem, Kolkata 700009, India

[3] Katwa Coll, Dept Phys, Burdwan 713130, W Bengal, India

来源：

CHEMICAL PHYSICS LETTERS | 2012年 / 543卷

关键词：

ACTIVATED RATE-PROCESSES; 1ST PASSAGE TIME; STOCHASTIC POTENTIALS; CHEMICAL-REACTIONS; SURFACE-DIFFUSION; KUBO OSCILLATOR; ESCAPE RATE; DYNAMICS; FRICTION; MOTION;

D O I：

10.1016/j.cplett.2012.06.024

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：

A system-reservoir nonlinear coupling model has been proposed for a situation where the reservoir is nonlinearly driven by an external Gaussian stationary noise which exposes the system particles to a non-equilibrium environment. Apart from the internal thermal noise, the thermodynamically open system encounters two other noises that are multiplicative in nature. Langevin equation derived from the resulting composite system contains the essential features of the interplay between these noise processes. Based on the numerical simulation of the full model potential, we show that one can recover the turnover features of the Kramers dynamics even when the reservoir is modulated nonlinearly by an external noise. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：173 / 178

页数：6