Finite-temperature critical point of a glass transition

Reference:

Elmatad, Y. S., Jack, R. L., Chandler, D. and Garrahan, J. P., 2010. Finite-temperature critical point of a glass transition. Proceedings of the National Academy of Sciences of the United States of America, 107 (29), pp. 12793-12798.

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Official URL:

http://dx.doi.org/10.1073/pnas.1006306107

Abstract

We generalize the simplest kinetically constrained model of a glass-forming liquid by softening kinetic constraints, allowing them to be violated with a small rate. We demonstrate that this model supports a first-order dynamical (space-time) phase transition between active (fluid) and inactive (glass) phases. The first-order phase boundary in this softened model ends in a finite-temperature dynamical critical point, which may be present in natural systems. In this case, the glass phase has a very large but finite relaxation time. We discuss links between the dynamical critical point and quantum phase transitions, showing that dynamical phase transitions in d dimensions map to quantum transitions in the same dimension, and hence to classical thermodynamic phase transitions in d + 1 dimensions.

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