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The three-state Potts CFT, also known as the Z 3 {\displaystyle \mathbb {Z} _{3}} parafermion CFT, is a conformal field theory in two dimensions. It is a minimal model with central charge c = 4 / 5 {\displaystyle c=4/5}. It is considered to be the simplest minimal model with a non-diagonal partition function in Virasoro characters, as well as the simplest non-trivial CFT with the W-algebra as a symmetry.
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