Stochastic resonance and heat fluctuations in a driven double-well system |
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Authors: | Mamata Sahoo Mangal C. Mahato |
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Affiliation: | a Institute of Physics, Sachivalaya Marg, Bhubaneswar-751005, India b St. Anthony’s College, Shillong-793003, India c Department of Physics, North-Eastern Hill University, Shillong-793022, India |
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Abstract: | We study a periodically driven (symmetric as well as asymmetric) double-well potential system at finite temperature. We show that mean heat loss by the system to the environment (bath) per period of the applied field is a good quantifier of stochastic resonance. It is found that the heat fluctuations over a single period are always larger than the work fluctuations. The observed distributions of work and heat exhibit pronounced asymmetry near resonance. The heat loss over a large number of periods satisfies the conventional steady-state fluctuation theorem. |
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Keywords: | 05.40.-a 05.40.Jc 05.60.Cd 05.40.Ca |
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