Zero-Range Processes with Multiple Condensates: Statics and Dynamics

Details Zero-Range Processes with Multiple Condensates: Statics and Dynamics Zero-Range Processes with Multiple Condensates: Statics and Dynamics

2008-01-29

arxiv.org/abs/0801.4501v2

J. Phys. A: Math. Theor. 41 (2008) 205001

Physics

Condensed Matter

Statistical Mechanics

25 pages, 18 figures

Scientific paper

10.1088/1751-8113/41/20/205001

The steady-state distributions and dynamical behaviour of Zero Range Processes with hopping rates which are non-monotonic functions of the site occupation are studied. We consider two classes of non-monotonic hopping rates. The first results in a condensed phase containing a large (but subextensive) number of mesocondensates each containing a subextensive number of particles. The second results in a condensed phase containing a finite number of extensive condensates. We study the scaling behaviour of the peak in the distribution function corresponding to the condensates in both cases. In studying the dynamics of the condensate we identify two timescales: one for creation, the other for evaporation of condensates at a given site. The scaling behaviour of these timescales is studied within the Arrhenius law approach and by numerical simulations.

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