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Phase diagram of the square-lattice three-state Potts antiferromagnet with a staggered polarization field | | Hiromi Otsuka
; Yutaka Okabe
; | | Date: |
17 Sep 2004 | | Journal: | Phys Rev Lett, 93 (12), 120601 | | Abstract: | We study a square-lattice three-state Potts antiferromagnet with a staggered polarization field at finite temperature. Numerically treating the transfer matrices, we determine two phase boundaries separating the model-parameter space into three parts. We confirm that one of them belongs to the ferromagnetic three-state Potts criticality, which is in accord with a recent prediction, and another to the Ising-type; these are both corresponding to the massless renormalization-group flows stemming from the Gaussian fixed points. We also discuss a field theory to describe the latter Ising transition. | | Source: | PubMed, pmid15447246 | | Services: | Forum | Review | Favorites | |
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