Stochastic resonance in a trapping overdamped monostable system

被引：97

作者：

Agudov, N. V. ^{[1
]}

Krichigin, A. V. ^{[1
]}

Valenti, D.

Spagnolo, B.

机构：

[1] Nizhniy Novgorod State Univ, Radiophys Fac, Nizhnii Novgorod 603950, Russia

来源：

PHYSICAL REVIEW E | 2010年 / 81卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

LINEAR-SYSTEM; NOISE; DRIVEN;

D O I：

10.1103/PhysRevE.81.051123

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The response of a trapping overdamped monostable system to a harmonic perturbation is analyzed, in the context of stochastic resonance phenomenon. We consider the dynamics of a Brownian particle moving in a piecewise linear potential with a white Gaussian noise source. Based on linear-response theory and Laplace transform technique, analytical expressions of signal-to-noise ratio (SNR) and signal power amplification (SPA) are obtained. We find that the SNR is a nonmonotonic function of the noise intensity, while the SPA is monotonic. Theoretical results are compared with numerical simulations.

引用

页数：8

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