Hubbard Model in Strong Correlation Regime -Variational Monte-Carlo Studies on Singlet Liquid and Néel State-

Hisatoshi Yokoyama, Hiroyuki Shiba

Research output: Contribution to journalArticlepeer-review

145 Citations (Scopus)

Abstract

The ground state of the Hubbard model on one-dimensional and two-dimensional square lattices is studied with the effective Hamiltonian derived for the strong correlation regime and Gutzwiller-type wave function. The non-half-filled band as wel] the half-filledband is discussed. The variational Monte-Carlo method enables us to evaluate the energy for the singlet liquid (resonating-valence-bond state) and for Néel state. The result shows that the stability of the singlet liquid depends on the dimensionality of thesystem.

Original languageEnglish
Pages (from-to)3570-3581
Number of pages12
Journaljournal of the physical society of japan
Volume56
Issue number10
DOIs
Publication statusPublished - 1987 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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