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Work probability distribution in systems driven out of equilibrium

A. Imparato·L. Peliti
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Abstract

We derive the differential equation describing the time evolution of the work probability distribution function of a stochastic system which is driven out of equilibrium by the manipulation of a parameter. We consider both systems described by their microscopic state or by a collective variable which identifies a quasiequilibrium state. We show that the work probability distribution can be represented by a path integral, which is dominated by ``classical'' paths in the large system size limit. We compare these results with simulated manipulation of mean-field systems. We discuss the range of applicability of the Jarzynski equality for evaluating the system free energy using these out-of-equilibrium manipulations. Large fluctuations in the work and the shape of the work distribution tails are also discussed.

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BibTeXRIS

A. Imparato, L. Peliti. 2005-08-09. Work probability distribution in systems driven out of equilibrium. https://doi.org/10.1103/physreve.72.046114

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