Regensburg 2007 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 7: Statistical physics far from thermal equilibrium

DY 7.3: Talk

Monday, March 26, 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.