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dc.contributor.authorLinks, Jonpt_BR
dc.contributor.authorFoerster, Angelapt_BR
dc.date.accessioned2014-09-26T02:10:49Zpt_BR
dc.date.issued2000pt_BR
dc.identifier.issn1098-0121pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/103842pt_BR
dc.description.abstractA model for a spin-1/2 ladder system with two legs is introduced. It is demonstrated that this model is solvable via the Bethe ansatz method for arbitrary values of the rung coupling J. This is achieved by a suitable mapping from the Hubbard model with appropriate twisted boundary conditions. We determine that a phase transition between gapped and gapless spin excitations occurs at the critical value Jc=1/2 of the rung coupling.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter and materials physics. Melville. Vol. 62, no. 1 (July 2000), p. 65-68pt_BR
dc.rightsOpen Accessen
dc.subjectSistemas de spinpt_BR
dc.subjectModelo de hubbardpt_BR
dc.subjectTransformações de fasept_BR
dc.subjectEquacao de bethe ansatzpt_BR
dc.titleSolution of a two-leg spin ladder systempt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000277188pt_BR
dc.type.originEstrangeiropt_BR


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