title: Connecting microscopic simulations with kinetically constrained models of glasses.
abstract: Kinetically constrained spin models are known to exhibit dynamical behavior mimicking that of glass forming systems. They are often understood as coarse-grained models of glass formers, in terms of some "mobility" field. The identity of this "mobility" field has remained elusive due to the lack of coarse-graining procedures to obtain these models from a more microscopic point of view. Here we exhibit a scheme to map the dynamics of a two-dimensional soft disk glass former onto a kinetically constrained spin model, providing an attempt at bridging these two approaches.
authors.affiliation: Physics Department, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6.
authors.forename: Matthew T
authors.initials: MT
authors.lastname: Downton
authors.forename: Malcolm P
authors.initials: MP
authors.lastname: Kennett