Frenetic aspects of second order response

Abstract

Starting from second order around thermal equilibrium, the response of a statistical mechanical system to an external stimulus is not only governed by dissipation and depends explicitly on dynamical details of the system. The so called frenetic contribution in second order around equilibrium is illustrated in different physical examples, such as for non-thermodynamic aspects in the coupling between system and reservoir, for the dependence on disorder in dielectric response and for the nonlinear correction to the Sutherland--Einstein relation. More generally, the way in which a system's dynamical activity changes by the pertubation is visible (only) from nonlinear response.

32 pages, 6 figures

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Cited by in corpus (8)

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• How statistical forces depend on thermodynamics and kinetics of driven media
• Measurement of second-order response without perturbation
• The Many Faces of Fluctuation-Dissipation Relations Out of Equilibrium
• A Thermodynamic Non-Linear Response Relation