Level spectroscopy of the square-lattice three-state Potts model with a ferromagnetic next-nearest-neighbor coupling

Hiromi Otsuka, Koutaro Mori, Yutaka Okabe, Kiyohide Nomura

研究成果: ジャーナルへの寄稿学術誌査読

10 被引用数 (Scopus)

抄録

We study the square-lattice three-state Potts model with the ferromagnetic next-nearest-neighbor coupling at finite temperature. Using the level-spectroscopy method, we numerically analyze the excitation spectrum of the transfer matrices and precisely determine the global phase diagram. Then we find that, contrary to a previous result based on the finite-size scaling, the massless region continues up to the decoupling point with Z3 × Z3 criticality in the antiferromagnetic region. We also check the universal relations among excitation levels to provide the reliability of our result.

本文言語英語
論文番号046103
ジャーナルPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
72
4
DOI
出版ステータス出版済み - 10月 2005

!!!All Science Journal Classification (ASJC) codes

  • 統計物理学および非線形物理学
  • 統計学および確率
  • 凝縮系物理学

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