Answers are grounded in this paper and cite their sources.
The authors give by explicit counterexample numerical evidence that critical exponent universality fails for the two-dimensional, continuous-spin, Ising model. This result is contrary to what has previously been assumed.
No takes yet. Share an insight, caveat, or question.
Baker et al. (1984) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: