Switching Exponent Scaling near Bifurcation Points for Non-Gaussian Noise

被引：17

作者：

Billings, Lora ^{[1
]}

Schwartz, Ira B. ^{[2
]}

McCrary, Marie ^{[1
]}

Korotkov, A. N. ^{[3
]}

Dykman, M. I. ^{[4
]}

机构：

[1] Montclair State Univ, Dept Math Sci, Montclair, NJ 07043 USA

[2] USN, Res Lab, Nonlinear Syst Dynam Sect, Div Plasma Phys, Washington, DC 20375 USA

[3] Univ Calif Riverside, Dept Elect Engn, Riverside, CA 92521 USA

[4] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 14期

基金：

美国国家科学基金会;

关键词：

ZERO-VOLTAGE STATE; THERMAL-ACTIVATION; JOSEPHSON-JUNCTION; FLUCTUATIONS; DEPENDENCE; SYSTEMS; ESCAPE; FIELD; MODEL;

D O I：

10.1103/PhysRevLett.104.140601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study noise-induced switching of a system close to bifurcation parameter values where the number of stable states changes. For non-Gaussian noise, the switching exponent, which gives the logarithm of the switching rate, displays a non-power-law dependence on the distance to the bifurcation point. This dependence is found for Poisson noise. Even weak additional Gaussian noise dominates switching sufficiently close to the bifurcation point, leading to a crossover in the behavior of the switching exponent.

引用

页数：4

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