1986 年 55 巻 10 号 p. 3285-3288
It is shown that (r−1)-state restricted eight-vertex SOS model (8VSOS) by Andrews, Baxter and Forrester is equivalent to q-state Potts model with q=4·cos2(π⁄r) (r=4, 5, 6…) at criticality. The equivalence follows from the Temperley-Lieb algebra shared by the models which is nothing but C*-algebra Aq,n defined by Jones in von Neumann algebra theory. This implies the correspondence of indices for subfactors of type II1 factors and discrete series of Virasoro algebra which labels the universality classes of the 8VSOS models.
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