Crooks fluctuation theorem

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The Crooks fluctuation theorem was developed by Gavin E. Crooks. It is also known as the Crooks Identity or the Crooks fluctuation relation. It is given by ([1] Eq. 2):


\[\frac{P_F(+\omega)}{P_R(-\omega)}= \exp({+ \omega})\]


where \(\omega\) is the entropy production, \(P_F(\omega)\) is the "forward" probability distribution of this entropy production, and \(P_R(-\omega)\), time-reversed. This expression can be written in terms of work (\(W\)) (Eq. 11):


\[\frac{P_F(+\beta W)}{P_R(- \beta W)}= \exp (- \Delta A) \exp (+\beta W)\]


where \(\beta := 1/(k_BT)\) where \(k_B\) is the Boltzmann constant and \(T\) is the temperature, and \(A\) is the Helmholtz energy function.

[edit] See also

[edit] References

  1. Gavin E. Crooks "Entropy production fluctuation theorem and the nonequilibrium work relation for free energy differences", Physical Review E 60 pp. 2721-2726 (1999)
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