Delocalisation of the associated height function model rules out exponential decay of the nematic order parameter for generalized 2D XY models.
Phase diagram of the ashkin– teller model.Communications in Mathematical Physics, 405(2):37, 2024
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Phase transitions in generalized XY models
Delocalisation of the associated height function model rules out exponential decay of the nematic order parameter for generalized 2D XY models.