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Thermodynamic Derivation of the Fluctuation Theorem and Jarzynski Equality

ISRN Thermodynamics
Publication Date
  • Mathematics
  • Physics


A thermodynamic expression for the analog of the canonical ensemble for nonequilibrium systems is described based on a purely information theoretical interpretation of entropy. It is shown that this nonequilibrium canonical distribution implies some important results from nonequilibrium thermodynamics, specifically, the fluctuation theorem and the Jarzynski equality. Those results are therefore expected to be more widely applicable, for example, to macroscopic systems.

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