Aging at Criticality in Model C Dynamics

Details Aging at Criticality in Model C Dynamics Aging at Criticality in Model C Dynamics

2002-11-04

arxiv.org/abs/cond-mat/0211062v2

Phys.Rev. E67 (2003) 036111

Physics

Condensed Matter

Statistical Mechanics

13 pages, 1 figure

Scientific paper

10.1103/PhysRevE.67.036111

We study the off-equilibrium two-point critical response and correlation functions for the relaxational dynamics with a coupling to a conserved density (Model C) of the O(N) vector model. They are determined in an \epsilon=4-d expansion for vanishing momentum. We briefly discuss their scaling behaviors and the associated scaling forms are determined up to first order in epsilon. The corresponding fluctuation-dissipation ratio has a non trivial large time limit in the aging regime and, up to one-loop order, it is the same as that of the Model A for the physically relevant case N=1. The comparison with predictions of local scale invariance is also discussed.

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