Exclusion Processes with Internal States

Details Exclusion Processes with Internal States Exclusion Processes with Internal States

2006-05-08

arxiv.org/abs/cond-mat/0605208v2

Phys. Rev. Lett. 97, 050603 (2006)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures. Version as published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.97.050603

We introduce driven exclusion processes with internal states that serve as generic transport models in various contexts, ranging from molecular or vehicular traffic on parallel lanes to spintronics. The ensuing non-equilibrium steady states are controllable by boundary as well as bulk rates. A striking polarization phenomenon accompanied by domain wall motion and delocalization is discovered within a mesoscopic scaling. We quantify this observation within an analytic description providing exact phase diagrams. Our results are confirmed by stochastic simulations.

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