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dc.contributor.authorTeles, Tarcisio Nunespt_BR
dc.contributor.authorBenetti, Fernanda Pereira da Cruzpt_BR
dc.contributor.authorPakter, Renatopt_BR
dc.contributor.authorLevin, Yanpt_BR
dc.date.accessioned2014-09-23T02:12:53Zpt_BR
dc.date.issued2012pt_BR
dc.identifier.issn0031-9007pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/103671pt_BR
dc.description.abstractWe introduce a generalized Hamiltonian mean field model—an XY model with both linear and quadratic coupling between spins and explicit Hamiltonian dynamics. In addition to the usual paramagnetic and ferromagnetic phases, this model also possesses a nematic phase. The generalized Hamiltonian mean field model can be solved explicitly using Boltzmann-Gibbs statistical mechanics, in both canonical and microcanonical ensembles. However, when the resulting microcanonical phase diagram is compared with the one obtained using molecular dynamics simulations, it is found that the two are very different.We will present a dynamical theory which allows us to explicitly calculate the phase diagram obtained using molecular dynamics simulations without any adjustable parameters. The model illustrates the fundamental role played by dynamics as well the inadequacy of Boltzmann-Gibbs statistics for systems with long-range forces in the thermodynamic limit.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review letters. Melville. Vol. 109, no. 23 (Dec. 2012), 230601, 5 p.pt_BR
dc.rightsOpen Accessen
dc.subjectMecânica estatísticapt_BR
dc.subjectTermodinâmica de não-equilíbriopt_BR
dc.subjectDinâmica molecularpt_BR
dc.titleNonequilibrium phase transitions in systems with long-range interactionspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000870503pt_BR
dc.type.originEstrangeiropt_BR


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