Stationary State Fluctuation Theorems for Driven Langevin Systems

Details Stationary State Fluctuation Theorems for Driven Langevin Systems Stationary State Fluctuation Theorems for Driven Langevin Systems

2007-01-27

arxiv.org/abs/cond-mat/0701683v1

Comptes Rendus Physique 8 (5-6), 507-517 (2007)

Physics

Condensed Matter

Statistical Mechanics

12 pages, 2 figures. Contribution to Proceedings of "Work, Dissipation, and Fluctuations in Nonequilibrium Physics", Brussels,

Scientific paper

10.1016/j.crhy.2007.04.009

Recent results on the stationary state Fluctuation Theorems for work and heat fluctuations of Langevin systems are presented. The relevance of finite time corrections in understanding experimental and simulation results is explained in the context of an exactly solvable model, namely a Brownian particle in a harmonic potential, which is dragged through the surrounding fluid. In this model, work fluctuations obey the conventional form of the fluctuation theorem while heat fluctuations satisfy an extended form. The connection with other work in recent literature is pointed out, and further generalizations are suggested.

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