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Emergent motion of condensates in mass-transport models

Ori Hirschberg1, David Mukamel1, and Gunter M. Schütz2

  • 1Department of Physics of Complex Systems, Weizmann Institute of Science, 76100 Rehovot, Israel
  • 2Institute of Complex Systems II, Forschungszentrum Jülich, 52425 Jülich, Germany

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Phys. Rev. E 87, 052116 – Published 13 May, 2013

DOI: https://doi.org/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 nonvanishing 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.

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Phys. Rev. E 87, 052116– Published 13 May, 2013
  • Received 17 December 2012

©2013 American Physical Society

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