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Nonequilibrium Free-Energy Relations for Thermal Changes

Williams, Stephen; Searles, Debra; Evans, Denis


The Jarzynski equality and the Crooks fluctuation theorem enable the calculation of the change in a system's free energy from nonequilibrium path integrals. These relations consider processes where the system is driven out of equilibrium by a mechanical external agent while remaining in contact with a thermal reservoir at a fixed temperature. We generalize these relations to describe processes driven by any type of external agent, be it thermal or mechanical. Attention is given to the case of a...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.100.250601


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