Escape Rate in the Bistable Sawtooth System Driven by Correlated Multiplicative and Additive White Noises

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2001,（2）
• 页码范围: 175-177
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

We study the escape problem of a bistable sawtooth system driven by correlated multiplicative and additive white noises. Exact analytic representation of the relative escape rate is obtained. Some novel phenomena are found from the calculation result; “suppression platform” appears in the relative escape rate when the noise correlation coefficient λ is positive. Moreover, for small positive values of λ, the relative escape rate exhibits “suppression platform” and then “resonant activation” with the increasing noise strength ratio R.