Publication
Physical Review B
Paper

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

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Abstract

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. © 1989 The American Physical Society.

Date

01 Jul 1989

Publication

Physical Review B

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