Fluctuations of entropy production in driven glasses

TL;DR

This paper investigates the non-equilibrium entropy production fluctuations in a driven glassy lattice gas, demonstrating the validity of the fluctuation theorem with an effective entropy measure.

Contribution

It introduces an effective entropy production concept to validate the Gallavotti-Cohen fluctuation theorem in a glassy system with boundary-driven non-equilibrium conditions.

Findings

Fluctuations obey the Gallavotti-Cohen fluctuation theorem with an effective entropy.

Non-equilibrium stationary states are characterized by specific entropy production statistics.

The study extends fluctuation theorem applicability to glassy systems with kinetic constraints.

Abstract

We study by Montecarlo simulation the non-equilibrium stationary behavior of a three-dimensional stochastic lattice gas with reversible kinetic constraints and in diffusive contact with two particle reservoirs at different chemical potential. When one of the boundaries is placed in the glassy phase, the statistics of entropy production fluctuations driven by the chemical potential gradient satisfy the Gallavotti-Cohen fluctuation theorem provided that an effective entropy production is introduced.