paper

An Extension of the Fluctuation Theorem

arXiv:cond-mat/0305147 · doi:10.1103/PhysRevLett.91.110601

Abstract

Heat fluctuations are studied in a dissipative system with both mechanical and stochastic components for a simple model: a Brownian particle dragged through water by a moving potential. An extended stationary state fluctuation theorem is derived. For infinite time, this reduces to the conventional fluctuation theorem only for small fluctuations; for large fluctuations, it gives a much larger ratio of the probabilities of the particle to absorb rather than supply heat. This persists for finite times and should be observable in experiments similar to a recent one of Wang et al.

12 pages, 1 eps figure in color (though intelligible in black and white)

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An Extension of the Fluctuation Theorem · wovepaper