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The Wavefunction Renormalization Constant for the One- and Two-Band Hubbard Hamiltonians in Two Dimensions

  • E. Louis
  • G. Chiappe
  • J. Galán
  • F. Guinea
  • J. A. Vergés
Chapter
  • 380 Downloads
Part of the NATO ASI Series book series (NSSB, volume 343)

Abstract

The normal state of the recently discovered high-T c superconductors [1], exhibits many exotic properties that are not yet fully understood. A picture that is gaining acceptance assumes that the normal state is not a normal Fermi liquid [2–5] but rather it shows unconventional properties somewhat similar to those of the Hubbard model in 1D [6], namely: i) an unrenor-malizable Fermi-surface phase shift, which implies a vanishing wavefunction renormalization constant (Z), ii) a one-particle spectral density that shows a strong peak at the Fermi energy, iii) a Fermi surface that obeys Luttinger’s theorem [7], and, iv) charge and spin separation.

Keywords

Hubbard Model Slater Determinant Single Hole Magnetic Polaron Half Filling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • E. Louis
    • 1
  • G. Chiappe
    • 1
  • J. Galán
    • 2
  • F. Guinea
    • 2
  • J. A. Vergés
    • 2
  1. 1.Departamento de Física AplicadaUniversidad de AlicanteAlicanteSpain
  2. 2.Instituto de Ciencia de MaterialesConsejo Superior de Investigaciones CientíficasMadridSpain

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