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arXiv · 2101.05019

A Thermodynamic Non-Linear Response Relation

Tristan Holsten·Matthias Krüger
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Abstract

The fluctuation-dissipation-theorem connects equilibrium to mildly (linearly) perturbed situations in a thermodynamic manner: It involves the observable of interest and the entropy production caused by the perturbation. We derive a relation which connects responses of arbitrary order in perturbation strength to correlations of entropy production of lower order, thereby extending the fluctuation-dissipation-theorem to cases far from equilibrium in a thermodynamic way. The relation is validated and studied for a 4-state-model.

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Tristan Holsten, Matthias Krüger. 2021-01-13. A Thermodynamic Non-Linear Response Relation. https://doi.org/10.1103/physreve.103.032116

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