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

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

2006-12-11

arxiv.org/abs/cond-mat/0612260v1

Phys. Rev. E 74, 061113 (2006)

Physics

Condensed Matter

Statistical Mechanics

Accepted in Phys. Rev. E

Scientific paper

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 Seifert's 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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