Partially Solvable Anisotropic t-J Model with Long-Range Interactions

Yasuhiro Saiga, Yusuke Kato, Yoshio Kuramoto

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

A new anisotropic t-J model in one dimension is proposed which has long-range hopping and exchange. This t-J model is only partially solvable in contrast to known integrable models with long-range interaction. In the high-density limit the model reduces to the XXZ chain with the long-range exchange. Some exact eigenfunctions are shown to be of the Jastrow type if certain conditions for an anisotropy parameter are satisfied. The ground state as well as the excitation spectrum for various values of the anisotropy parameter and filling are derived numerically. It is found that the Jastrow-type wave function is an excellent trial function for any value of the anisotropy parameter.

Original languageEnglish
Pages (from-to)2361-2364
Number of pages4
Journaljournal of the physical society of japan
Volume65
Issue number8
DOIs
Publication statusPublished - 1996

Keywords

  • Anisotropy
  • Exact diagonalization
  • Excitation spectrum
  • Inverse-square interaction
  • Jastrow-type wave function
  • t-J model

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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