Breakdown of Gallavotti-Cohen symmetry for stochastic dynamics
R. J. Harris, A. Rákos, G. M. Schuetz
Abstract
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.
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