PHASE-TRANSITION IN A Q-DEFORMED LIPKIN MODEL

dc.contributorUniversidade de São Paulo (USP)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:20:12Z
dc.date.available2014-05-20T15:20:12Z
dc.date.created2014-05-20T15:20:12Z
dc.date.issued1995-09-07
dc.identifierJournal of Physics A-mathematical and General. Bristol: Iop Publishing Ltd, v. 28, n. 17, p. 4915-4923, 1995.
dc.identifier0305-4470
dc.identifierhttp://hdl.handle.net/11449/31535
dc.identifier10.1088/0305-4470/28/17/022
dc.identifierWOS:A1995RV09200022
dc.description.abstractAssuming q-deformed commutation relations for the fermions, an extension of the standard Lipkin Hamiltonian is presented. The usual quasi-spin representation of the standard Lipkin model is also obtained in this q-deformed framework. A variationally obtained energy functional is used to analyse the phase transition associated with the spherical symmetry breaking. The only phase transitions in this q-deformed model are of second order. As an outcome of this analysis a critical parameter is obtained which is dependent on the deformation of the algebra and on the number of particles.
dc.languageeng
dc.publisherIop Publishing Ltd
dc.relationJournal of Physics A: Mathematical and General
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.titlePHASE-TRANSITION IN A Q-DEFORMED LIPKIN MODEL
dc.typeArtículos de revistas


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