Logarithmic Correction Terms of the Magnetic Susceptibility in Highly Correlated Electron Systems.

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  • Kawano Kenro
    Institute for Solid State Physics, University of Tokyo, Roppongi, Minato–ku, Tokyo 106
  • Takahashi Minoru
    Institute for Solid State Physics, University of Tokyo, Roppongi, Minato–ku, Tokyo 106

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Other Title
  • Logarithmic Correction Terms of the Mag
Published
1995
DOI
  • 10.1143/jpsj.64.4331
Publisher
THE PHYSICAL SOCIETY OF JAPAN

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The logarithmic correction terms in the repulsive Hubbardchain is investigated by using the Bethe Ansatz. The magneticsusceptibility χ of this model has a field dependent logarithmiccorrection term in small magnetic field at zero-temperature. This termcauses ∂ χ /∂ h|_{h=0}=∞ . In arbitrary nand U the existence of the logarithmic correction term is shown forthe susceptibility. We consider how this term depends on n and U. Wealso discuss the logarithmic correction term of the super-symmetric t-J model.

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