Berlin 2005 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 52: Statistical Physics far from Thermal Equilibrium

DY 52.3: Vortrag

Mittwoch, 9. März 2005, 13:00–13:15, TU H3010

Hysteresis in One-Dimensional Reaction-Diffusion Systems — •Attila Rakos, Matthias Paessens, and Gunter M. Schuetz — Institut fuer Festkoerperforschung, Forschungszentrum Juelich, D-52425 Juelich

We introduce a simple nonequilibrium model for a driven diffusive system with nonconservative reaction kinetics in one dimension. The steady state exhibits a phase with broken ergodicity and hysteresis which has no analog in systems investigated previously. We identify the main dynamical mode, viz., the random motion of a shock in an effective potential, which provides a unified framework for understanding phase coexistence as well as ergodicity breaking. This picture also leads to the exact phase diagram of the system.