Response function of coarsening systems
Societa Italiana Di Fisica, L. Berthier A, J. L. Barrat, J. Kurchan · 1999
Abstract. The response function of domain growth processes, and in particular the violation of the fluctuation-dissipation theorem, are studied both analytically and numerically. In the asymptotic limit of large times, the fluctuation-dissipation ratio X, which quanties this violation, tends to one if C> m2 and to zero if C 2, and as ln(L(t))=L(t) for d = 2. Numerical results conrming this analysis are presented. PACS. 05.70.Ln Nonequilibrium and irreversible thermodynamics { 75.40.Gb Gb Dynamic properties (dynamic susceptibility, spin waves, spin diusion, dynamic scaling, etc.) { 75.40.Mg Numerical simulation studies 1