Emergent motion of condensates in mass-transport models
arXiv:1212.4076 · doi:10.1103/PhysRevE.87.052116
Abstract
We examine the effect of spatial correlations on the phenomenon of real-space condensation in driven mass-transport systems. We suggest that in a broad class of models with a spatially correlated steady state, the condensate drifts with a non-vanishing velocity. We present a robust mechanism leading to this condensate drift. This is done within the framework of a generalized zero-range process (ZRP) in which, unlike the usual ZRP, the steady state is not a product measure. The validity of the mechanism in other mass-transport models is discussed.
5 pages, 2 figures. For supplementary material see http://www.weizmann.ac.il/weizsites/mukamel/sm/cond-drift/
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