Regensburg 2007 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 7: Statistical physics far from thermal equilibrium
DY 7.3: Vortrag
Montag, 26. März 2007, 15:00–15:15, H5
Breakdown of Gallavotti-Cohen symmetry for stochastic dynamics — •Rosemary Harris1, Attila Rákos2, and Gunter Schütz3 — 1Universität des Saarlandes, Saarbrücken, Germany — 2Weizmann Institute of Science, Rehovot, Israel — 3Forschungszentrum Jülich, Jülich, Germany
We consider the behaviour of current fluctuations in the one-dimensional partially asymmetric zero-range process with open boundaries. Significantly, we find that the distribution of large current fluctuations does not satisfy the Gallavotti-Cohen symmetry and that such a breakdown can generally occur in systems with unbounded state space. We also discuss the dependence of the asymptotic current distribution on the initial state of the system.