Berlin 2005 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 40: Statistical Physics (General) I

DY 40.8: Vortrag

Dienstag, 8. März 2005, 12:00–12:15, TU H3010

Crystallization and glass transition in a hard-core lattice gas model — •Martin Weigt¹, Hendrik Hansen-Goos², and Alexander K. Hartmann² — ¹Institute for Scientific Interchange, Viale S. Severo 65, I-10133 Torino - Italy — ²ITP, Uni Göttingen, F.-Hund-Platz 1, 37077 Göttingen

We introduce a hard-core lattice-gas model on generalized Bethe lattices and investigate its compaction behavior analytically via the cavity method and numerically via Monte-Carlo simulations. If compactified slowly, the system undergoes a first-order crystallization transition. If compactified much faster, the system stays in a meta-stable liquid state and undergoes a discontinuous glass transition under further compaction. We also find two additional, more exotic metastable phases, a so-called inverse crystalline and a crystalline glass phase.