A Study on Stochastic Resonance in Biased Subdiffusive Smoluchowski Systems within Linear Response Range  

作　　者：李逸娟 康艳梅 

机构地区：[1]Department of Applied Mathematics,School of Science,Xi'an Jiaotong University

出　　处：《Communications in Theoretical Physics》2010年第8期292-296,共5页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.10602041 and 10972170

摘　　要：The method of matrix continued fraction is used to investigate stochastic resonance (SR) in the biasedsubdiffusive Smoluchowski system within linear response range.Numerical results of linear dynamic susceptibility andspectral amplification factor are presented and discussed in two-well potential and mono-well potential with differentsubdiffusion exponents.Following our observation,the introduction of a bias in the potential weakens the SR effect inthe subdiffusive system just as in the normal diffusive case.Our observation also discloses that the subdiffusion inhibitsthe low-frequency SR,but it enhances the high-frequency SR in the biased Smoluchowski system,which should reflect a'flattening' influence of the subdiffusion on the linear susceptibility.

关 键 词：linear response SUBDIFFUSION stochastic resonance matrix continued fraction 

分 类 号：O324[理学—一般力学与力学基础] TP311.5[理学—力学]