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Condensation Transitions in Two Species Zero-Range Process

T. Hanney·M. R. Evans
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Abstract

We study condensation transitions in the steady state of a zero-range process with two species of particles. The steady state is exactly soluble -- it is given by a factorised form provided the dynamics satisfy certain constraints -- and we exploit this to derive the phase diagram for a quite general choice of dynamics. This phase diagram contains a variety of new mechanisms of condensate formation, and a novel phase in which the condensate of one of the particle species is sustained by a `weak' condensate of particles of the other species. We also demonstrate how a single particle of one of the species (which plays the role of a defect particle) can induce Bose-Einstein condensation above a critical density of particles of the other species.

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T. Hanney, M. R. Evans. 2003-08-14. Condensation Transitions in Two Species Zero-Range Process. https://doi.org/10.1103/physreve.69.016107

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