paper

Phase transition and phase coexistence in coupled rings with driven exclusion process

arXiv:1302.6675 · doi:10.1103/PhysRevE.87.032157

Abstract

We study one-dimensional exclusion processes in two coupled closed rings consisting of a common diffusive channel and two parallel active (driven) channels. Our model displays bulk-driven phase transition and phase coexistence in the form of a localised domain wall (DW) in one of the active channels in a limit where the diffusive and driven dynamics compete. By controlling a splitting parameter which tunes the in-coming currents into the active channels, the system can be brought to a delocalisation transition, when delocalised DWs are formed in both the active channels. We characterise the DW fluctuations numerically.

arXiv comment8 pages,8 eps figures

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