The instantaneous fluctuation theorem

Charlotte F. Petersen, Denis J. Evans, Stephen R. Williams

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)


    We give a derivation of a new instantaneous fluctuation relation for an arbitrary phase function which is odd under time reversal. The form of this new relation is not obvious, and involves observing the system along its transient phase space trajectory both before and after the point in time at which the fluctuations are being compared. We demonstrate this relation computationally for a number of phase functions in a shear flow system and show that this non-locality in time is an essential component of the instantaneous fluctuation theorem.

    Original languageEnglish
    Article number184106
    JournalJournal of Chemical Physics
    Issue number18
    Publication statusPublished - 14 Nov 2013


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