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Title: Reaction-diffusion lattice gas: Theory and computer results
Author: Alonso Pereda, Juan José
Marro, Joaquín, 1945-
González-Miranda, J. M. (Jesús Manuel)
Keywords: Simulació per ordinador
Processos irreversibles
Termodinàmica del desequilibri
Transformacions de fase (Física estadística)
Computer simulation
Irreversible processes
Nonequilibrium thermodynamics
Phase transformations (Statistical physics)
Issue Date: 1993
Publisher: The American Physical Society
Abstract: We 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.
Note: Reproducció del document publicat a:
It is part of: Physical Review e, 1993, vol. 47, núm. 2, p. 885-898
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ISSN: 1063-651X
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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