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应用科学学报 ›› 1988, Vol. 6 ›› Issue (4): 357-362.

• 论文 • 上一篇    下一篇

有限长Hubbard链中的孤子解

肖家鑫1, 王详泉2, 林家逖1   

  1. 1. 天津大学;
    2. 上海科学技术大学
  • 收稿日期:1985-12-25 修回日期:1986-05-10 出版日期:1988-12-31 发布日期:1988-12-31
  • 基金资助:
    中国科学院科学基金资助的课题

SOLITARY SOLUTION IN A MODIFIED HUBBARD CHAIN WITH FINITE LENGTH

XIAO JIAXIN1, WANG XIANGQUAN2, LIN JIATIH1   

  1. 1. Tianjin University;
    2. Shanghai University of Science and Technology
  • Received:1985-12-25 Revised:1986-05-10 Online:1988-12-31 Published:1988-12-31

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摘要： 从Hubbard模型出发,人们讨论了电子间的相互作用对一维导体的输运性质的影响.而这些讨论均以无限长链为对象.本文将对有限长Hubbard链作出分析.所得结果正确地反映出Hubbard势及链长对晶格扭折形状、电荷密度分布等的影响.同时也可看出Lindner等人的结果是我们长链近似下的表述.

Abstract: The effect of electron-electron interaction on the transfer properties of a one-dimensional conductor has been investigated by many authors, using the modified Hubbard chain model with infinite length only. In this paper, we develop the finite length Hubbard model to investigate the effects of electron-electron interaction. The results obtained show correctly the effects of chain length and Hubbard interaction on the lattice form, charge density, etc. The result of Lindner et al. can also be derived by taking the chain length approaching infinity.