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dc.contributor.authorHenriques, Vera Bohomoletzpt_BR
dc.contributor.authorBarbosa, Marcia Cristina Bernardespt_BR
dc.date.accessioned2014-08-22T02:11:07Zpt_BR
dc.date.issued2005pt_BR
dc.identifier.issn1539-3755pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/101615pt_BR
dc.description.abstractWe present a simple model for an associating liquid in which polymorphism and density anomaly are connected. Our model combines a two dimensional lattice gas with particles interacting through a soft core potential and orientational degrees of freedom represented through thermal “ice variables.” The competition between the directional attractive forces and the soft core potential leads to a phase diagram in which two liquid phases and a density anomaly are present. The coexistence line between the low density liquid and the high density liquid has a positive slope contradicting the surmise that the presence of a density anomaly implies that the high density liquid is more entropic than the low density liquid.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. E, Statistical, nonlinear, and soft matter physics. Vol. 71, no. 3 (Mar. 2005), 031504, 4 p.pt_BR
dc.rightsOpen Accessen
dc.subjectDensidadept_BR
dc.subjectEntropiapt_BR
dc.subjectDiagramas de fasept_BR
dc.titleLiquid polymorphism and density anomaly in a lattice gas modelpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000532287pt_BR
dc.type.originEstrangeiropt_BR


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