Europhys. Lett., 64 (3) , pp. 302-308 (2003)
Dynamical arrest in a geometric model for the glass transitionK. A. Dawson1, S. Franz2 and M. Sellitto2
1 University College Dublin, Irish Centre for Colloid Science and Biomaterials Department of Chemistry - Belfield Dublin 4, Ireland
2 The Abdus Salam International Centre for Theoretical Physics Strada Costiera 11, 34100 Trieste, Italy
(Received 2 June 2003; accepted in final form 22 August 2003)
We investigate the nature of the slow relaxation in a three-dimensional lattice binary mixture with soft geometric constraints. We find that at high particle density the equilibrium relaxation time diverges with a super-Arrhenius law (like a double exponential of the inverse temperature), resulting in history-dependent properties typical of glassy relaxation. By a non-local Monte Carlo algorithm we equilibrate the system and determine its phase diagram in the temperature-density representation. The system exhibits a first-order melting transition line, and no apparent signature of the mean-field glassy scenario.
05.20.-y - Classical statistical mechanics.
64.70.Pf - Glass transitions.
64.60.My - Metastable phases.
© EDP Sciences 2003