Violation of Fluctuation–Dissipation Relation in Fragile Glasses

Abstract

The relationship between correlation and response in the glass state of a binary lattice gas model is explored. In contrast to the Cugliandolo–Kurchan off-equilibrium fluctuation dissipation relation (FDR), we see a violation of the FDR. This collapse of the relation appears for a collective motion among particles of the glassy system. This violation of FDR is related to the inevitable irreversibility that accompanies a quasi-static operation applied to a glassy system.