Stochastic Resonance in a Bistable Sawtooth Potential Driven by Correlated Multiplicative and Additive Noise

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（10）
• 页码范围: 1416-1419
• 页数: 4页
• 分类号: O4
• 语种: 英文

摘要

We present an analytical investigation of the signal-to-noise ratio (SNR) by studying the bistable sawtoothsystem driven by correlated Gaussian white noise. The analytic expression of the SNR is obtained. We detectsome novel results, as follows. (1) Stochastic resonance (SR) always occurs in the SNR-Q (the multiplicativenoise intensity) curve for the whole range of correlation coefficients. (2) There is not only resonance but alsosuppression and monotony in the dependence of SNR upon the additive noise intensity. (3) There are two extrema(one is minimum, the other maximum) in the SNR-b (the barrier height) curve for different multiplicative noiseintensities.