Charge Excitation Gap of the Extended Hubbard Model

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概要

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• The author investigates the one-dimensional extended Flubbard mccdel, i.e. theHubbard model with additional nearest rteighbor Coulomb repulsion V. The chargeexcitation gap at half-filling is obtained numerically. Tlte calculated gap is smallerthan that given by the Flartree-Fock approximation, especially near tlte )chase bound-ary. The gap is finite at the boundary WIICII U= 12, the result which gives an upperbound for the position of the tricritical jcoint.

• 一般社団法人日本物理学会の論文
• 1992-10-15

著者

• Nishino Tomotoshi

  Physics Department College Of General Education

関連論文

• Product Wave Function Renormalization Group
• Charge Excitation Gap of the Extended Hubbard Model

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