Talk:Universality class
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Symmetries[edit]
the column "symmetries" of the table has to be rethought. Logically, this column has to refer to the symmetries of the scale-invariant fixed point, not to the symmetries of some particular representative of the universality class (i.e. of the lattice model). The symmetries of the fixed point are larger. So the part "symmetry of the interaction" has to be removed. I would keep just the internal symmetry of the fixed point in this column. All listed universality classes are rotationally and translationally invariant (and also conformally invariant).
PhysicsAboveAll (talk) 09:02, 27 March 2020 (UTC)
undirected percolation[edit]
"this dimension is 2d for the Ising model, or for undirected percolation, but 1d for undirected percolation"
This sentence appears contradictory. Lewis Goudy (talk) 22:34, 23 October 2017 (UTC)
=== update
I think since the conformal bootstrap, some of the exponents (like 3d ising) are known more accurately? — Preceding unsigned comment added by 82.17.71.110 (talk) 18:22, 3 April 2019 (UTC)