We consider the out-of-equilibrium, purely relaxational dynamics of a weakly diluted Ising model in the aging regime at criticality. We derive at first order in a rootepsilon expansion the two-time response and correlation functions for vanishing momenta. The long-time limit of the critical fluctuation-dissipation ratio is computed at the same order in perturbation theory.

Aging and fluctuation-dissipation ratio for the dilute Ising model

Calabrese, Pasquale;Gambassi, Andrea
2002-01-01

Abstract

We consider the out-of-equilibrium, purely relaxational dynamics of a weakly diluted Ising model in the aging regime at criticality. We derive at first order in a rootepsilon expansion the two-time response and correlation functions for vanishing momenta. The long-time limit of the critical fluctuation-dissipation ratio is computed at the same order in perturbation theory.
2002
66
21
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.66.212407
Calabrese, Pasquale; Gambassi, Andrea
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/11483
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