Resonant-Like Activation in a Bistable System with Noise and Time Delay
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摘要:
A bistable system with noise and time delay is investigated.Theoretical analysis and stochastic simulation show that:(i) In the case of a system driven only by multiplicative Gaussian white noise,the mean first-passage time for a particle to reach the other stable state from one stable state exhibits a minimum with respect to delay time,i.e.,a resonant-like activation (RA) phenomenon.(ii) In the action of additive and multiplicative noise,as the additive noise intensity increases,no matter whether a correlation between the two types of noise exists or not,the RA gradually disappears.(iii) The correlation strength between the two types of noise does not influence the existence of the RA.