Dynamics of the frustrated Ising lattice gas

The dynamical properties of a three-dimensional model glass, the frustrated Ising lattice gas (FILG), are studied by Monte Carlo simulations. We prese nt results of compression experiments, where the chemical potential is eith er slowly or abruptly changed, as well as simulations at constant density. One time quantities like density and two time quantities like correlations, responses, and mean square displacements are measured, and the departure f rom equilibrium clearly characterized. The aging scenario, particularly in the case of density autocorrelations, is reminiscent of spin glass phenomen ology with violations of the fluctuation-dissipation theorem, typical of sy stems with one replica symmetry breaking. The FILG, as a valid on-lattice m odel of structural glasses, can be described with tools developed in spin g lass theory and, being a finite-dimensional model, can open the way for a s ystematic study of activated processes in glasses.