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Spectral properties and sum rules of the one-dimensional Hubbard model

โœ Scribed by Tsutomu Momoi


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
415 KB
Volume
195
Category
Article
ISSN
0375-9601

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The sum rule for the moments of the spectral density is discussed for the single-band Hubbard model. It is shown that respecting the sum rule up to the order m 3 is conceptually important for a qualitatively correct description of the quasi-particle band structure in the strong-correlation regime. D