Stochastic lattice models with several absorbing states
Haye Hinrichsen · Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1997
We study two models with n equivalent absorbing states that generalize the Domany-Kinzel cellular automaton and the contact process. Numerical investigations show that for n=2 both models belong to the same universality class as branching annihilating walks with an even number of offspring. Unlike previously known models, these models have no explicit parity conservation law.