Excitations in a nearly half-filled Hubbard model with U=

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5 Scopus citations


It is shown that, even near half filling, the elementary excitations of the large-U Hubbard model form wide bands of width t, the intersite hopping integral, and that the slave-boson-based mean-field approximation is qualitatively wrong in the relevant limit. This large-U limit has no Kondo-type divergences.

Original languageEnglish (US)
Pages (from-to)723-726
Number of pages4
JournalPhysical Review B
Issue number1
StatePublished - 1989

ASJC Scopus subject areas

  • Condensed Matter Physics


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