Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/209
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dc.contributor.authorRaimondi, Roberto-
dc.contributor.authorCastellani, Claudio-
dc.date.accessioned2009-02-07T16:52:52Z-
dc.date.available2009-02-07T16:52:52Z-
dc.date.issued1993-
dc.identifier.citation10en
dc.identifier.issn1550-235x-
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/2307/209-
dc.description.abstractWe analyze the single-particle spectral density and the optical conductivity of the single-band Hubbard model in the insulating Mott phase within the slave-boson technique. We show that the boson fluctuations around the saddle-point solution build up the lower and upper Hubbard bands and give rise to the optical conductivity which describes transitions between these incoherent bands. We find that the Brinkman-Rice metal-insulator transition is characterized by the simultaneous vanishing of the jump in the chemical potential, the single-particle spectral density gap, and the optical gap.en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.relation.ispartofPhysical Review Ben
dc.subjectStrongly correlated electron systemsen
dc.subjectHubbard modelen
dc.subjectmetal-insulator transitionen
dc.subjectslave-boson approachen
dc.subjectFermi-liquiden
dc.titleLower and upper Hubbard bands: A slave-boson treatmenten
dc.typeArticleen
dc.subject.miurSettori Disciplinari MIUR::Scienze fisiche::FISICA TEORICA, MODELLI E METODI MATEMATICIen
dc.subject.isicruiCategorie ISI-CRUI::Scienze fisiche::Applied Physics/Condensed Matter/Materials Scienceen
dc.subject.anagraferoma3Scienze fisicheen
dc.relation.volumenumber48en
dc.relation.pagenumber11453 - 11456en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.48.11453-
dc.identifier.doi10.1103/PhysRevB.48.11453-
item.languageiso639-1other-
item.fulltextWith Fulltext-
item.grantfulltextrestricted-
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X_Dipartimento di Fisica 'Edoardo Amaldi'
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