Two time scales and FDT violation in a Finite Dimensional Model for Structural Glasses
Federico Ricci-Tersenghi, Daniel A. Stariolo, Jeferson J. Arenzon
Abstract
We study the breakdown of fluctuation-dissipation relations between time dependent density-density correlations and associated responses following a quench in chemical potential in the Frustrated Ising Lattice Gas. The corresponding slow dynamics is characterized by two well separated time scales which are characterized by a constant value of the fluctuation-dissipation ratio. This result is particularly relevant taking into account that activated processes dominate the long time dynamics of the system.
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