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

Yoshihiro Nishiyama; Naomichi Hatano; Masuo Suzuki

doi:10.1143/JPSJ.64.1967

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

Yoshihiro Nishiyama, Naomichi Hatano, Masuo Suzuki

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	1967-1979
Number of pages	13
Journal	journal of the physical society of japan
Volume	64
Issue number	6
DOIs	https://doi.org/10.1143/JPSJ.64.1967
Publication status	Published - Jun 1995
Externally published	Yes

Keywords

Haldane phase
dimer phase
hidden correlation
ladder model
resonating valence bond

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.64.1967

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AB - 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.

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