Dresden 2014 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 41: Poster - Pattern/ Nonlinear Dyn./ Fluids/ Granular/ Critical Phen.

DY 41.4: Poster

Donnerstag, 3. April 2014, 17:00–19:00, P3

Non-equilibrium dynamics of ordered modulated phases — •Christian Riesch, Günter Radons, and Robert Magerle — Institut für Physik, Technische Universität Chemnitz, D-09107 Chemnitz

We have performed numerical simulations of simple models for modulated phases, with the focus on 2D stripe-forming systems. The system is initially prepared in an ordered state without topological defects, and the subsequent evolution at a finite noise strength is monitored. This results in a rich non-equilibrium dynamics. In particular, we find aging in the two-time correlation function of the local stripe orientation, which is explained in terms of a growing correlation length perpendicular to the stripes. We also discuss the effects of system size, aspect ratio and a possible cross-over to 1D behavior.