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arXiv · 0902.3955

Fluctuations and response of nonequilibrium states

Marco Baiesi·Christian Maes·Bram Wynants
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Abstract

A generalized fluctuation-response relation is found for thermal systems driven out of equilibrium. Its derivation is independent of many details of the dynamics, which is only required to be first-order. The result gives a correction to the equilibrium fluctuation-dissipation theorem, in terms of the correlation between observable and excess in dynamical activity caused by the perturbation. Previous approaches to this problem are recovered and extended in a unifying scheme.

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Marco Baiesi, Christian Maes, Bram Wynants. 2009-06-04. Fluctuations and response of nonequilibrium states. https://doi.org/10.1103/physrevlett.103.010602

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