Self-duality in triplet Potts models (Triangular lattice Ising model)

Obtains a class of self-dual q-state models generalizing the triangular lattice triplet Ising model in the same way that the standard q-state Potts model generalizes the self-dual square lattice Ising model. For four-state models the author finds an additional class of triplet models that are self-dual at a single temperature in analogy with the Ashkin-Teller model.

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