Stochastic resonance in an asymmetric bistable system driven by coloured noises

doi:10.1088/1674-1056/19/5/050504

Abstract The phenomenon of stochastic resonance is investigated in an asymmetric bistable system with coloured noises. The approximate Fokker--Planck equation is derived based on the Novikov theorem and the Fox approach. By applying the two-state theory, the expression of the signal-to-noise ratio is obtained in the adiabatic limit. The effects of the noise parameters on signal-to-ratio are discussed. It is found that the stochastic resonance phenomena appear in most cases and disappear in some special cases.

Keywords: stochastic resonance asymmetric bistable system coloured noises

Received: 14 September 2009
Revised: 27 October 2009
Accepted manuscript online:

PACS:	05.40.Ca	(Noise)
	02.50.Ey	(Stochastic processes)
	02.30.Jr	(Partial differential equations)

Fund: Project supported by the National Natural Science Foundation of China (Grant No.~10672074).

Cite this article:

Yang Jian-Hua(杨建华) and Liu Xian-Bin(刘先斌) Stochastic resonance in an asymmetric bistable system driven by coloured noises 2010 Chin. Phys. B 19 050504

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Stochastic resonance in an asymmetric bistable system driven by coloured noises

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