# Fluctuation–response inequality out of equilibrium

@article{Dechant2020FluctuationresponseIO, title={Fluctuation–response inequality out of equilibrium}, author={A. Dechant and S. Sasa}, journal={Proceedings of the National Academy of Sciences}, year={2020}, volume={117}, pages={6430 - 6436} }

Significance Inequalities play a central role in physics: They allow us to state universal relations between different quantities. Starting from information-theoretic concepts, we derive an inequality for stochastic dynamics, called fluctuation–response inequality (FRI). The FRI connects the response of a physical observable to a change in the dynamics and the fluctuations of the observable in a reference dynamic. We argue that the FRI can serve as a starting point to discover many previously… Expand

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