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Berlin 2005 – scientific programme

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DY: Dynamik und Statistische Physik

DY 40: Statistical Physics (General) I

DY 40.4: Talk

Tuesday, March 8, 2005, 11:00–11:15, TU H3010

Mechanism of spontaneous symmetry breaking in a driven system with short range interaction — •Gunter M. Schütz1, Richard Willmann1, and Stefan Grosskinsky21Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich — 2Zentrum Mathematik, TU München, 85747 Garching

A one-dimensional two-species model with short-range interaction driven by an external field is considered. Although the dynamics is symmetric with respect to the two species, the steady state has a region in parameter space with broken symmetry which has no analogue in thermal equilibrium. We determine the exact phase diagram and describe quantitatively the dynamics of symmetry breaking by amplification of fluctuations. Our results are confirmed by Monte-Carlo simulations.

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