Comment on ``Two Time Scales and Violation of the Fluctuation-Dissipation Theorem in a Finite Dimensional Model for Structural Glasses''

摘要

In cond-mat/0002074 Ricci-Tersenghi et al. find two linear regimes in thefluctuation-dissipation relation between density-density correlations andassociated responses of the Frustrated Ising Lattice Gas. Here we show thatthis result does not seem to correspond to the equilibrium quantities of themodel, by measuring the overlap distribution P(q) of the density and comparingthe FDR expected on the ground of the P(q) with the one measured in theoff-equilibrium experiments.