Direct evaluation of large deviation functions

C. Giardinà, J. Kurchan, L. Peliti

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We introduce a numerical procedure to evaluate directly the probabilities of large deviations of physical quantities, such as current or density, that are local in time. The large-deviation functions are given in terms of the typical properties of a modified dynamics, and since they no longer involve rare events, can be evaluated efficiently and over a wider ranges of values. We illustrate the method with the current fluctuations of the Totally Asymmetric Exclusion Process and with the work distribution of a driven Lorentz gas.
Original languageEnglish
Article number120603
Pages (from-to)1-4
JournalPhysical Review Letters
Publication statusPublished - 2006


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