"Conformal field theory" . "conformal field theory" . "CFT" . . "conformal field theories" . . "dilatation operator" . "infinity of solutions" . . . "OPE coefficients" . "conformally invariant quantum theory" . . "generalized free theories" . "conformal quantum theory" . "infinitely many" . . "conformal quantum field theory" . "conformal quantum field theories" . "Conformal field theory" . . . . . "scale-invariant" . "conformally invariant" . . "infinite-dimensional" . . . "RCFT" . . "conformal invariance" . "conformal" . "Conformal_field_theory#Scale_invariance_vs_conformal_invariance" . . "unitary" .