Venkatesh, TG and Patnaik, LM (1992) Noise-spike-induced escape in a bistable system driven by colored noise: Noise with long correlation times. In: Physical Review A, 46 (12). R7355-R7358.
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An escape mechanism in a bistable system driven by colored noise of large but finite correlation time (tau) is analyzed. It is shown that the fluctuating potential theory [Phys. Rev. A 38, 3749 (1988)] becomes invalid in a region around the inflection points of the bistable potential, resulting in the underestimation of the mean first passage time at finite tau by this theory. It is shown that transitions at large but finite tau are caused by noise spikes, with edges rising and falling exponentially in a time of O(tau). Simulation of the dynamics of the bistable system driven by noise spikes of the above-mentioned nature clearly reveal the physical mechanism behind the transition.
|Item Type:||Editorials/Short Communications|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Department/Centre:||Division of Electrical Sciences > Computer Science & Automation (Formerly, School of Automation)|
|Date Deposited:||02 May 2011 05:50|
|Last Modified:||08 Jul 2011 08:09|
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