Comment on cond-mat/0107371: ``Dynamical exponents of an even-parity-conserving contact process with diffusion''
arXiv:cond-mat/0107425
Abstract
In cond-mat/0107371, Mendonca proposes that diffusion can change the universality class of a parity-conserving reaction-diffusion process. In this comment we suggest that this cannot happen, due to symmetry arguments. We also present numerical results from lattice simulations which support these arguments, and mention a previous result supporting this conclusion.
6 pages, 2 figures. short comment. Misprints corrected