Nonequilibrium large deviations are determined by equilibrium dynamics

TL;DR

This paper demonstrates that the large deviations in nonequilibrium systems can be derived from the fluctuations observed in their equilibrium counterparts, enabling easier analysis through equilibrium measurements.

Contribution

It establishes a fundamental link between nonequilibrium large deviations and equilibrium dynamics, simplifying their computation and measurement.

Findings

Large deviations in nonequilibrium systems are determined by equilibrium fluctuations.

Equilibrium measurements can be used to infer nonequilibrium fluctuations.

Numerical calculations of nonequilibrium large deviations can be performed at equilibrium.

Abstract

We show that the large deviations of nonequilibrium systems are determined by the fluctuations of associated equilibrium dynamics. In particular, this implies that numerical calculations and experimental measurements of nonequilibrium fluctuations can be done at equilibrium.