Physical Review Letters
Nonequilibrium Equality for Free Energy Differences
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Abstract
An expression is derived for the equilibrium free energy difference between two configurations of a system, in terms of an ensemble of finite-time measurements of the work performed in parametrically switching from one configuration to the other. Two well-known identities emerge as limiting cases of this result.
DOI: 10.1103/physrevlett.78.2690 · Publisher: American Physical Society (APS)