Alonso Pereda, Juan JoséMarro, Joaquín, 1945-González-Miranda, J. M. (Jesús Manuel)2011-07-072011-07-0719931063-651Xhttps://hdl.handle.net/2445/18829We report on the study of nonequilibrium ordering in the reaction-diffusion lattice gas. It is a kinetic model that relaxes towards steady states under the simultaneous competition of a thermally activated creation-annihilation $(reaction$) process at temperature T, and a diffusion process driven by a heat bath at temperature T?T. The phase diagram as one varies T and T, the system dimension d, the relative priori probabilities for the two processes, and their dynamical rates is investigated. We compare mean-field theory, new Monte Carlo data, and known exact results for some limiting cases. In particular, no evidence of Landau critical behavior is found numerically when d=2 for Metropolis rates but Onsager critical points and a variety of first-order phase transitions.14 p.application/pdfeng(c) American Physical Society, 1993Simulació per ordinadorProcessos irreversiblesTermodinàmica del desequilibriTransformacions de fase (Física estadística)Computer simulationIrreversible processesNonequilibrium thermodynamicsPhase transformations (Statistical physics)info:eu-repo/semantics/article501966info:eu-repo/semantics/openAccess