paper

The Entropy Production Fluctuation Theorem and the Nonequilibrium Work Relation for Free Energy Differences

arXiv:cond-mat/9901352 · doi:10.1103/PhysRevE.60.2721

Abstract

There are only a very few known relations in statistical dynamics that are valid for systems driven arbitrarily far-from-equilibrium. One of these is the fluctuation theorem, which places conditions on the entropy production probability distribution of nonequilibrium systems. Another recently discovered far-from-equilibrium expression relates nonequilibrium measurements of the work done on a system to equilibrium free energy differences. In this paper, we derive a generalized version of the fluctuation theorem for stochastic, microscopically reversible dynamics. Invoking this generalized theorem provides a succinct proof of the nonequilibrium work relation.

6 pages, 5 figures. Typos removed, references added. Includes an expanded introduction

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