Entropic noise induced stability and double entropic stochastic resonance induced by correlated noises

被引：0

作者：

曾春华 ^{[1
,2
]}

王华 ^{[2
]}

王辉涛 ^{[2
]}

机构：

[1] Faculty of Science,Kunming University of Science and Technology

[2] Center of Metallurgical Energy Conservation and Emission Reduction,Ministry of Education,Kunming University of Science and Technology

来源：

Chinese Physics B | 2011年 / 05期

基金：

中国国家自然科学基金;

关键词：

correlated noises; confined system; entropic noise induced stability; double entropic stochastic resonance;

D O I：

暂无

中图分类号：

O415 [非线性物理学];

学科分类号：

070201 ;

摘要：

For the activated dynamics of a Brownian particle moving in a confined system with the presence of entropic barriers,this paper investigates a periodic driving and correlations between two noises.Within the two-state approximation,the explicit expressions of the mean first passage time(MFPT) and the spectral power amplification(SPA) are obtained,respectively.Based on the numerical computations,it is found that:(i) The MFPT as a function of the noise intensity exhibits a maximum with the positive correlations between two noises(λ > 0),this maximum for MFPT shows the characteristic of the entropic noise induced stability(ENIS) effect.The intensity λ of correlations between two noises can enhance the ENIS effect.(ii) The SPA as a function of the noise intensity exhibits a double-peak by tuning the noise correlation intensity λ,i.e.,the existence of a double-peak behaviour is the identifying characteristic of the double entropic stochastic resonance phenomenon.

引用

页码：150 / 156

页数：7