%0 Journal Article
%J Physical Review Letters
%D 2007
%T Quadratic contact process: Phase separation with interface-orientation-dependent equistability
%A Liu, D.
%A Guo, X. F.
%A Evans, J. W.
%K CRITICAL-BEHAVIOR
%K REACTION MODELS
%K systems
%K TRANSITIONS
%M ISI:000244646100012
%P 050601
%R 10.1103/PhysRevLett.98.050601
%V 98
%X The quadratic contact process is implemented on a square lattice as a model with random adsorption and correlated desorption requiring empty pairs of diagonal neighbors. The model exhibits a discontinuous phase transition between an active state and an absorbing state, but equistability between these states depends on the orientation of the separating interface. Correspondingly, for a generalized class of models, we find phase coexistence over a finite region of their two-dimensional parameter space. This is in stark contrast to behavior in equilibrium systems.
%8 Feb
%9 Article
%@ 0031-9007