Symmetry breaking and phase coexistence in a driven diffusive two-channel system

Details Symmetry breaking and phase coexistence in a driven diffusive two-channel system Symmetry breaking and phase coexistence in a driven diffusive two-channel system

2001-06-12

arxiv.org/abs/cond-mat/0106216v1

Phys. Rev. E 64 026126(2001)

Physics

Condensed Matter

Statistical Mechanics

12 pages, 10 figures, to appear in Phys.Rev.E

Scientific paper

10.1103/PhysRevE.64.026126

We consider classical hard-core particles moving on two parallel chains in the same direction. An interaction between the channels is included via the hopping rates. For a ring, the stationary state has a product form. For the case of coupling to two reservoirs, it is investigated analytically and numerically. In addition to the known one-channel phases, two new regions are found, in particular the one, where the total density is fixed, but the filling of the individual chains changes back and forth, with a preference for strongly different densities. The corresponding probability distribution is determined and shown to have an universal form. The phase diagram and general aspects of the problem are discussed.

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