Stochastic Resonance of a Periodically Driven Bistable System with Two Different Kinds of Time Delays

被引：1
作者：
Zeng Chun-Hua [1 ]
Zhou Xiao-Feng [2 ]
Zeng Qin-Huang [3 ]
Yu Huan [3 ]
Li Zhi-Xiong [3 ]
机构：
[1] Kunming Univ Sci & Technol, Fac Sci, Kunming 650093, Peoples R China
[2] Qujing Normal Univ, Dept Phys, Qujing 655000, Peoples R China
[3] Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2009年 / 52卷 / 05期
关键词：
stochastic resonance; time delays; bistable system; KINETIC-MODEL; SUBJECT;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, we study the phenomenon of stochastic resonance (SR) in a periodically driven bistable system with correlations between multiplicative and additive white noise terms when there are two different kinds of time delays existed in the deterministic and fluctuating forces, respectively. Using the small time delay approximation and the theory of signal-to-noise ratio(SNR) in the adiabatic limit, the expression of SNR is obtained. The effects of the delay time tau in the deterministic force,and the delay time theta in the fluctuating force on SNR are discussed. Based on the numerical computation, it is found that: (i)There appears a reentrant transition between one peak and two peaks and then to one peak again in the curve of SNR when the value of the time delay theta is increased.(ii)SR can be realized by tuning the time delay tau or theta with fixed noise, i.e., delay-induced stochastic resonance (DSR) exists.
引用
收藏
页码：871 / 875
页数：5
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