Nonequilibrium Equality for Free Energy Differences
- 7 April 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 78 (14), 2690-2693
- https://doi.org/10.1103/physrevlett.78.2690
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.Keywords
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