Phys. Rev. Lett. 96, 120603 (2006) [4 pages]Direct Evaluation of Large-Deviation FunctionsReceived 21 November 2005; published 31 March 2006 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. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.120603
DOI:
10.1103/PhysRevLett.96.120603
PACS:
05.40.−a, 05.70.Ln
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