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dc.contributor.authorFernandes, Henrique Almeidapt_BR
dc.contributor.authorSilva, Roberto dapt_BR
dc.contributor.authorBernardi, Alinne Borgespt_BR
dc.date.accessioned2019-01-22T02:36:47Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn1539-3755pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/188030pt_BR
dc.description.abstractWe study the behavior of the phase transitions of the Ziff-Gullari-Barshad (ZGB) model when CO molecules are adsorbed on a catalytic surface with a rate y and desorbed from the surface with a rate k. We employ largescale nonequilibrium Monte Carlo simulations along with an optimization technique based on the coefficient of determination, in order to obtain an overview of the phase transitions of the model in the whole spectrum of y and k (0 y 1 and 0 k 1) with precision y = k = 0.001. Successive refinements reveal a region of points belonging to the directed percolation universality class, whereas the exponents θ and β/ν obtained agree with those of this universality class. On the other hand, the effects of allowing the CO desorption from the lattice on the discontinuous phase transition point of the original ZGB model suggest the emergence of an Ising-like point previously predicted by Tomé and Dickman [Phys. Rev. E 47, 948 (1993)]. We show that such a point appears after a sequence of two lines of pseudocritical points which leads to a unique peak of the coefficient of determination curve in yc = 0.554 and kc = 0.064. In this point, the exponent θ agrees with the value found for the Ising model.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. E, Statistical, nonlinear, and soft matter physics. Melville. Vol. 98, no. 3 (Sept. 2018), 032113, 9 p.pt_BR
dc.rightsOpen Accessen
dc.subjectTransformações de fasept_BR
dc.subjectModelo de isingpt_BR
dc.subjectMétodo de Monte Carlopt_BR
dc.titleTwo universality classes of the Ziff-Gulari-Barshad model with CO desorption via time-dependent Monte Carlo simulationspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001082826pt_BR
dc.type.originEstrangeiropt_BR


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