Functional renormalization for pinned elastic systems away from their steady states

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Published 29 June 2005 2005 EDP Sciences
, , Citation G. Schehr and P. Le Doussal 2005 EPL 71 290 DOI 10.1209/epl/i2005-10074-6

0295-5075/71/2/290

Abstract

Using one-loop functional RG we study two problems of pinned elastic systems away from their equilibrium or steady states. The critical regime of the depinning transition is investigated starting from a flat initial condition. It exhibits non-trivial two-time dynamical regimes with exponents and scaling functions obtained in a dimensional expansion. The aging and equilibrium dynamics of the super-rough glass phase of the random Sine-Gordon model at low temperature is found to be characterized by a single dynamical exponent zc/T, where c compares well with recent numerical work. This agrees with the thermal boundary layer picture of pinned systems.

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10.1209/epl/i2005-10074-6