Connecting microscopic simulations with kinetically constrained models of glasses

Matthew T. Downton; Malcolm P. Kennett

doi:10.1103/physreve.76.031502

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arXiv · 0704.1497

Connecting microscopic simulations with kinetically constrained models of glasses

Matthew T. Downton·Malcolm P. Kennett

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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 disc glass former onto a kinetically constrained spin model, providing an attempt at bridging these two approaches.

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Matthew T. Downton, Malcolm P. Kennett. 2007-09-13. Connecting microscopic simulations with kinetically constrained models of glasses. https://doi.org/10.1103/physreve.76.031502

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