Berlin 2005 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 25: Symposium Renormalization and Scaling (SYRS) – Contributed Talks II
DY 25.4: Vortrag
Samstag, 5. März 2005, 16:45–17:00, TU H3010
Aging in the glass phase of a 2D random periodic elastic system — •Gregory Schehr1 and Pierre Le Doussal2 — 1Theoretische Phisik Universitat des Saarlandes 66041 Saarbrucken Germany — 2CNRS-Laboratoire de Physique Theorique de l’Ecole Normale Superieure, 24 Rue Lhomond 75231 Paris, France
Using RG we investigate the non-equilibrium relaxation of the (Cardy-Ostlund) 2D random Sine-Gordon model, which describes pinned arrays of lines. Its statics exhibits a marginal (θ=0) glass phase for T<Tg described by a line of fixed points. We obtain the universal scaling functions for two-time dynamical response and correlations near Tg for various initial conditions, as well as the autocorrelation exponent. The fluctuation dissipation ratio is found to be non-trivial and continuously dependent on T.