title: Fluctuation-dissipation relations in the activated regime of simple strong-glass models.
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 behavior, 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.
authors.affiliation: Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom.
authors.forename: Arnaud
authors.initials: A
authors.lastname: Buhot
authors.forename: Juan P
authors.initials: JP
authors.lastname: Garrahan