Ground State Wave Function of an Extended Hubbard Model

  • T. Nishino
Conference paper

DOI: 10.1007/978-3-642-84821-6_18

Volume 70 of the book series Springer Proceedings in Physics (SPPHY)
Cite this paper as:
Nishino T. (1992) Ground State Wave Function of an Extended Hubbard Model. In: Miyashita S., Imada M., Takayama H. (eds) Computational Approaches in Condensed-Matter Physics. Springer Proceedings in Physics, vol 70. Springer, Berlin, Heidelberg

Abstract

Energy level structure of an extended Hubbard model, which contains an additional spin flip term, is investigated. At half filling the system is insulating, where the ground state is easily obtained. When a hole is introduced, a bound state appears in the middle of the Hubbard gap.

Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • T. Nishino
    • 1
  1. 1.Department of Physics, Faculty of ScienceOsaka UniversityToyonaka, Osaka 560Japan