Dynamics of the frustrated Ising lattice gas

Abstract

The dynamical properties of a three dimensional model glass, the frustrated Ising lattice gas (FILG) are studied by Monte Carlo simulations. We present results of compression experiments, where the chemical potential is either slowly or abruptly changed, as well as simulations at constant density. One time quantities like density and two time ones like correlations, responses and mean square displacements are measured, and the departure from equilibrium clearly characterized. The aging scenario, particularly in the case of density autocorrelations is reminiscent of spin glass phenomenology with violations of the Fluctuation-dissipation theorem, typical of systems with one replica symmetry breaking. The FILG, as a valid on-lattice model of structural glasses can be described with tools developed in spin glass theory and, being a finite dimensional model, can open the way for a systematic study of activated processes in glasses.

to appear in Phys. Rev. E, november (2000)

References in corpus (7)

• A first principle computation of the thermodynamics of glasses
• Observation of Fluctuation-Dissipation-Theorem Violations in a Structural Glass
• The thermodynamical liquid-glass transition in a Lennard-Jones binary mixture
• Quasi-equilibrium interpretation of aging dynamics
• Off-Equilibrium Effective Temperature in Monatomic Lennard-Jones Glass
• Two time scales and FDT violation in a Finite Dimensional Model for Structural Glasses
• Off equilibrium dynamics of the Frustrated Ising Lattice Gas

Cited by in corpus (8)

• Violation of the fluctuation-dissipation theorem in glassy systems: basic notions and the numerical evidence
• Observable-dependence of fluctuation-dissipation relations and effective temperatures
• Spatially heterogeneous ages in glassy dynamics
• Fluctuation-dissipation relations and effective temperatures in simple non-mean field systems
• Statistical mechanics of the vertex-cover problem
• The Blume-Emery-Griffiths Spin Glass and Inverted Tricritical Points
• Heterogeneities in systems with quenched disorder
• Metastable states in the Blume-Emery-Griffiths spin glass model