Phase Transition and Hidden Orders of the Heisenberg Ladder Model in the Ground State

Yoshihiro Nishiyama, Naomichi Hatano, Masuo Suzuki

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

A ground-state phase transition of the antiferromagnetic Heisenberg ladder model is investigated by means of the exact-diagonalization method. A hidden-order correlation is defined for characterizing the ground state. The critical point and the exponent v are estimated accurately with the use of the hidden-order correlation. The relevance of the resonating-valence-bond theory to the present system is also discussed by inspecting hidden orders and the elementary excitation.

Original languageEnglish
Pages (from-to)1967-1979
Number of pages13
Journaljournal of the physical society of japan
Volume64
Issue number6
DOIs
Publication statusPublished - Jun 1995
Externally publishedYes

Keywords

  • Haldane phase
  • dimer phase
  • hidden correlation
  • ladder model
  • resonating valence bond

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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