Model for Nonequilibrium Wetting Transitions in Two Dimensions

A simple two-dimensional (2D) model of a phase growing on a substrate is introduced. The model is characterized by an adsorption rate q, and a desorption rate p. It exhibits a wetting transition which may be viewed as an unbinding transition of an interface from a wall. For p0ex0ex=0ex0ex1, the model may be mapped onto an exactly soluble equilibrium model exhibiting complete wetting with critical exponents γ0ex0ex=0ex0ex1/3 for the diverging interface width and x₀0ex0ex=0ex0ex1 for the zero-level occupation. For $0