Fluctuation-dissipation ratio in lattice-gas models with kinetic constraints

TL;DR

This paper uses Monte Carlo simulations to study the fluctuation-dissipation ratio in 3D lattice-gas models with kinetic constraints, confirming mean field theory predictions about the glassy phase.

Contribution

It provides the first numerical verification of fluctuation-dissipation theorem breakdown in kinetically constrained lattice-gas models.

Findings

Breakdown of fluctuation-dissipation theorem in the glassy phase

Agreement with mean field mode-coupling theory predictions

Validation of kinetic constraints' role in glassy dynamics

Abstract

We investigate by Montecarlo simulation the linear response function of three dimensional structural glass models defined by short-range kinetic constraints and a trivial equilibrium Boltzmann-Gibbs measure. The breakdown of the fluctuation-dissipation theorem in the glassy phase follows the prediction of mean field low temperature mode-coupling theory.