Volume 71, Number 2, July 2005
|Page(s)||290 - 296|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||29 June 2005|
Functional renormalization for pinned elastic systems away from their steady states
Theoretische Physik, Universität des Saarlandes - 66041 Saarbrücken, Germany
2 LPTENS CNRS UMR 8549 - 24 rue Lhomond, 75231 Paris Cedex 05, France
Accepted: 13 May 2005
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 , where c compares well with recent numerical work. This agrees with the thermal boundary layer picture of pinned systems.
PACS: 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.) / 05.20.-y – Classical statistical mechanics / 75.10.Nr – Spin-glass and other random models
© EDP Sciences, 2005
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