Steady States of a Nonequilibrium Lattice Gas

Details Steady States of a Nonequilibrium Lattice Gas Steady States of a Nonequilibrium Lattice Gas

2005-04-21

arxiv.org/abs/cond-mat/0504568v1

Physics

Condensed Matter

Statistical Mechanics

14 pages, 24 figures

Scientific paper

10.1103/PhysRevE.72.036127

We present a Monte Carlo study of a lattice gas driven out of equilibrium by a local hopping bias. Sites can be empty or occupied by one of two types of particles, which are distinguished by their response to the hopping bias. All particles interact via excluded volume and a nearest-neighbor attractive force. The main result is a phase diagram with three phases: a homogeneous phase, and two distinct ordered phases. Continuous boundaries separate the homogeneous phase from the ordered phases, and a first-order line separates the two ordered phases. The three lines merge in a nonequilibrium bicritical point.

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