Ref HAL: hal-00364938_v1
Ref Arxiv: 0810.5298
DOI: 10.1088/1751-8113/42/7/075007
WoS: 000262583100010
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
247 Citations
Résumé:

We investigate the dynamics of kinetically constrained models of glassformers by analysing the statistics of trajectories of the dynamics, orhistories, using large deviation function methods. We show that, in general,these models exhibit a first-order dynamical transition between active andinactive dynamical phases. We argue that the dynamical heterogeneitiesdisplayed by these systems are a manifestation of dynamical first-order phasecoexistence. In particular, we calculate dynamical large deviation functions,both analytically and numerically, for the Fredrickson-Andersen model, the Eastmodel, and constrained lattice gas models. We also show how large deviationfunctions can be obtained from a Landau-like theory for dynamical fluctuations.We discuss possibilities for similar dynamical phase-coexistence behaviour inother systems with heterogeneous dynamics.

Commentaires: 29 pages, 7 figs,