The large-N O(N) universality class is conformally invariant at criticality, established by functional and vertex-by-vertex proofs in the NPRG framework.
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An 't Hooft anomaly at general imaginary baryon chemical potential constrains the QCD chiral transition to three minimal CFT scenarios, with the favored one for N_f >= 3 featuring a conformal manifold of theta_B-dependent universality classes with an exactly marginal operator tied to baryon density.
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Conformal Invariance of the large-$N$ limit of the $O(N)$ universality class
The large-N O(N) universality class is conformally invariant at criticality, established by functional and vertex-by-vertex proofs in the NPRG framework.
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Does hot QCD have a conformal manifold in the chiral limit?
An 't Hooft anomaly at general imaginary baryon chemical potential constrains the QCD chiral transition to three minimal CFT scenarios, with the favored one for N_f >= 3 featuring a conformal manifold of theta_B-dependent universality classes with an exactly marginal operator tied to baryon density.