Thermodynamic Theory of Phase Transitions in Driven Lattice Gases
  We formulate an approximate thermodynamic theory of the phase transition in driven lattice gases with attractive nearest-neighbor interactions. We construct the van der Waals equation of state for a driven system where a nonequilibrium chemical potential can be expressed as a function of density and driving field. A Maxwell's construction leads to the phase transition from a homogeneous fluid phase to the coexisting phases of gas and liquid. 
Punyabrata Pradhan and Udo Seifert
cond-mat.stat-mech