Answers are grounded in this paper and cite their sources.
It is pointed out that the eight-vertex model, the triplet model and the Ashkin-Teller (1943) model have a common exponent relation beta e=1/4-1/4 alpha that is not a consequence of scaling theory. It is proposed that this relation reflects a special symmetry of these models and this proposal is related to possible classification of two-dimensional systems.
No takes yet. Share an insight, caveat, or question.
I. G. Enting (1975) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: