Phys. Rev. Lett. 95, 040602 (2005) [4 pages]Entropy Production along a Stochastic Trajectory and an Integral Fluctuation TheoremReceived 29 March 2005; published 20 July 2005 For stochastic nonequilibrium dynamics like a Langevin equation for a colloidal particle or a master equation for discrete states, entropy production along a single trajectory is studied. It involves both genuine particle entropy and entropy production in the surrounding medium. The integrated sum of both Δstot is shown to obey a fluctuation theorem ⟨exp[-Δstot]⟩=1 for arbitrary initial conditions and arbitrary time-dependent driving over a finite time interval. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.040602
DOI:
10.1103/PhysRevLett.95.040602
PACS:
05.40.−a, 05.70.−a
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