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Title: SU(N)Heisenberg model with multicolumn representations
Authors: Okubo, Tsuyoshi
Harada, Kenji  kyouindb  KAKEN_id
Lou, Jie
Kawashima, Naoki
Author's alias: 原田, 健自
Issue Date: 5-Oct-2015
Publisher: American Physical Society
Journal title: Physical Review B
Volume: 92
Issue: 13
Thesis number: 134404
Abstract: The SU(N) symmetric antiferromagnetic Heisenberg model with multicolumn representations on the two-dimensional square lattice is investigated by quantum Monte Carlo simulations. For the representation of a Young diagram with two columns, we confirm that a valence-bond solid (VBS) order appears as soon as the Néel order disappears at N=10, indicating no intermediate phase. In the case of the representation with three columns, there is no evidence for either the Néel or the VBS ordering for N≥15. This is actually consistent with the large-N theory, which predicts that the VBS state immediately follows the Néel state, because the expected spontaneous order is too weak to be detected.
Rights: ©2015 American Physical Society
DOI(Published Version): 10.1103/PhysRevB.92.134404
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