Glass transition in granular mediaM. Tarzia, A. de Candia, A. Fierro, M. Nicodemi and A. Coniglio
Dipartimento di Fisica, Università di Napoli "Federico II", INFM and INFN via Cintia, 80126 Napoli, Italy
(Received 12 January 2004; accepted 8 March 2004)
In the framework of schematic hard-spheres lattice models for granular media we investigate the phenomenon of the "jamming transition". In particular, using Edwards' approach, by analytical calculations at a mean-field level, we derive the system phase diagram and show that "jamming" corresponds to a phase transition from a "fluid" to a "glassy" phase, observed when crystallization is avoided. Interestingly, the nature of such a "glassy" phase turns out to be the same found in mean-field models for glass formers.
64.70.Pf - Glass transitions.
45.70.-n - Granular systems.
75.10.Nr - Spin-glass and other random models.
© EDP Sciences 2004