Renormalization group study of a kinetically constrained model for strong glasses

Details Renormalization group study of a kinetically constrained model for strong glasses Renormalization group study of a kinetically constrained model for strong glasses

2004-08-31

arxiv.org/abs/cond-mat/0408694v1

Phys. Rev. E 71, 026128 (2005)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevE.71.026128

We derive a dynamic field theory for a kinetically constrained model, based on the Fredrickson--Andersen model, which we expect to describe the properties of an Arrhenius (strong) supercooled liquid at the coarse-grained level. We study this field theory using the renormalization group. For mesoscopic length and time scales, and for space dimension d \geq 2, the behaviour of the model is governed by a zero-temperature dynamical critical point in the directed percolation universality class. We argue that in d=1 its behaviour is that of compact directed percolation. We perform detailed numerical simulations of the corresponding Fredrickson-Andersen model on the lattice in various dimensions, and find reasonable quantitative agreement with the field theory predictions.

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