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Test of the fluctuation theorem for stochastic entropy production in a nonequilibrium steady state

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We derive a simple closed analytical expression for the total entropy production along a single stochastic trajectory of a Brownian particle diffusing on a periodic potential under an external constant force. By numerical simulations we compute the probability distribution functions of the entropy and satisfactorily test many of the predictions based on Seiferts integral fluctuation theorem. The results presented for this simple model clearly illustrate the practical features and implications derived from such a result of nonequilibrium statistical mechanics.

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Articles publicats en revistes (Física de la Matèria Condensada)

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Test of the fluctuation theorem for stochastic entropy production in a nonequilibrium steady state