Phase boundaries of the isotropic helical Potts model on a square lattice
- 1 September 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 26 (5), 2693-2696
- https://doi.org/10.1103/physrevb.26.2693
Abstract
The helical Potts model, a generalization of the -state Potts model relevant to the commensurate-incommensurate transition, is studied on the square lattice. Close to zero temperature this model can be mapped onto the six-vertex Baxter model in direct fields. This mapping indicates the presence of an incommensurate phase, characterized by algebraic decay of correlations with an exponent as . A Lifshitz-like point occurs when the ferromagnetic, modulated, and disordered phases meet.
Keywords
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