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Abstract Work Fluctuations and Stochastic Resonance

By Shantu Saikia, Ratnadeep Roy and A. M. Jayannavar


We study Brownian particle motion in a double-well potential driven by an ac force. This system exhibits the phenomenon of stochastic resonance. Distribution of work done on the system over a drive period in the time asymptotic regime have been calculated. We show that fluctuations in the input energy or work done dominate the mean value. The mean value of work done over a period as a function of noise strength can also be used to characterise stochastic resonance in the system. We also discuss the validity of steady state fluctuation theorems in this particular system

Topics: Key words, Stochastic Resonance, Fluctuation Theorems PACS, 05.40.−a, 05.40.Jc, 05.60.Cd, 05.40.Ca
Year: 2007
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