Excitation gaps in the orbitally degenerate Hubbard model (Articolo in rivista)

Type
Label
  • Excitation gaps in the orbitally degenerate Hubbard model (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Amendola, ME; Noce, C (2006)
    Excitation gaps in the orbitally degenerate Hubbard model
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Amendola, ME; Noce, C (literal)
Pagina inizio
  • 8345 (literal)
Pagina fine
  • 8351 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 18 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Salerno, Dipartimento Matemat & Informat, I-84081 Baronissi, Italy; Univ Salerno, Dipartimento Fis ER Caianiello, CNR, INFM,Lab Reg Supermat, I-84081 Baronissi, Italy (literal)
Titolo
  • Excitation gaps in the orbitally degenerate Hubbard model (literal)
Abstract
  • The excitation gaps for the two-orbital degenerate Hubbard model are investigated by applying a generalized version of Lieb's spin-reflection positivity. Combining the known exact results on the ground state, and making use of symmetry properties, we rigorously show that, at half-filling, the charge gaps are always larger than the spin-excitation gaps and properly defined orbital gaps. (literal)
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