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Measuring equilibrium properties in aging systems

Silvio Franz·Marc Mézard·Giorgio Parisi·Luca Peliti
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Abstract

We corroborate the idea of a close connection between replica symmetry breaking and aging in the linear response function for a large class of finite-dimensional systems with short-range interactions. In these system, characterized by a continuity condition with respect to weak random perturbations of the Hamiltonian, the ``fluctuation dissipation ratio'' in off-equilibrium dynamics should be equal to the static cumulative distribution function of the overlaps. This allows for an experimental measurement of the equilibrium order parameter function.

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Silvio Franz, Marc Mézard, Giorgio Parisi, Luca Peliti. 1998-05-08. Measuring equilibrium properties in aging systems. https://doi.org/10.1103/physrevlett.81.1758

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