TASEP on a ring with internal degrees of freedom

Details TASEP on a ring with internal degrees of freedom TASEP on a ring with internal degrees of freedom

2010-08-02

arxiv.org/abs/1008.0316v1

Phys. Rev. E 82, 041117 (2010)

Physics

Condensed Matter

Statistical Mechanics

6 pages, 4 eps Figs

Scientific paper

10.1103/PhysRevE.82.041117

A totally asymmetric exclusion process on a ring with $\nu$ non-conserved internal degrees of freedom, where particles hop forward with a rate that depends on their internal state, has been studied. We show, using a mapping of the model to a zero range process with $\nu$ different kinds of boxes, that steady state weights can be written in a matrix product form and calculate the spatial correlations exactly. A comparison of the model with an equivalent conserved system reveals that unequal hopping rates of particles belonging to different internal states is responsible for the non-trivial correlations.

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