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dc.contributor.authorFernandes, Heitor Carpes Marquespt_BR
dc.contributor.authorArenzon, Jeferson Jacobpt_BR
dc.contributor.authorLevin, Yanpt_BR
dc.date.accessioned2020-01-28T04:11:02Zpt_BR
dc.date.issued2007pt_BR
dc.identifier.issn0021-9606pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/204962pt_BR
dc.description.abstractMonte Carlo simulations are used to study lattice gases of particles with extended hard cores on a two-dimensional square lattice. Exclusions of one and up to five nearest neighbors (NN) are considered. These can be mapped onto hard squares of varying side length, λ (in lattice units), tilted by some angle with respect to the original lattice. In agreement with earlier studies, the 1NN exclusion undergoes a continuous order-disorder transition in the Ising universality class. Surprisingly, we find that the lattice gas with exclusions of up to second nearest neighbors (2NN) also undergoes a continuous phase transition in the Ising universality class, while the Landau–Lifshitz theory predicts that this transition should be in the universality class of the XY model with cubic anisotropy. The lattice gas of 3NN exclusions is found to undergo a discontinuous order-disorder transition, in agreement with the earlier transfer matrix calculations and the Landau–Lifshitz theory. On the other hand, the gas of 4NN exclusions once again exhibits a continuous phase transition in the Ising universality class—contradicting the predictions of the Landau–Lifshitz theory. Finally, the lattice gas of 5NN exclusions is found to undergo a discontinuous phase transition.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe journal of chemical physics. New York. Vol. 126, no. 11 (Mar. 2007), 114508, 11 p.pt_BR
dc.rightsOpen Accessen
dc.subjectMétodo de Monte Carlopt_BR
dc.subjectTransformacoes de ordem-desordempt_BR
dc.subjectGás de redept_BR
dc.subjectTransformações de fasept_BR
dc.subjectSistemas bidimensionaispt_BR
dc.titleMonte Carlo simulations of two-dimensional hard core lattice gasespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000593902pt_BR
dc.type.originEstrangeiropt_BR


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