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Fluctuation-dissipation relations in the activated regime of simple strong-glass models

Arnaud Buhot·Juan P. Garrahan
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Abstract

We study the out-of-equilibrium fluctuation-dissipation (FD) relations in the low temperature, finite time, physical aging regime of two simple models with strong glass behaviour, the Fredrickson-Andersen model and the square-plaquette interaction model. We explicitly show the existence of unique, waiting-time independent dynamical FD relations. While in the Fredrickson-Andersen model the FD theorem is obeyed at all times, the plaquette model displays piecewise linear FD relations, similar to what is found in disordered mean-field models and in simulations of supercooled liquids, and despite the fact that its static properties are trivial. We discuss the wider implications of these results.

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Arnaud Buhot, Juan P. Garrahan. 2002-05-22. Fluctuation-dissipation relations in the activated regime of simple strong-glass models. https://doi.org/10.1103/physrevlett.88.225702

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