title: Competitive reactions among three monomers over a catalytic surface
abstract: We studied in this work a three-monomer reaction model on one- and two-dimensional lattices. We have taken different reactivity rates among pairs of monomers and the reaction between two selected monomers was forbidden. We have employed the mean field and the pair approximation to decouple the equations of motion for the densities of single and pairs of monomers. We found the stationary states and the phase diagram of the model. We have shown that, in two dimensions and within the pair approximation, there is a first-order transition line between active and poisoned steady states.
authors.affiliation: Departamento de Fisica, Universidade Federal de Santa Catarina, 88040-900 Florianopolis, SC, Brazil.
authors.lastname: da Costa EC
authors.initials: W
authors.lastname: Figueiredo