We study a conformal field theory that arises in the infinite-volume limit of a spin chain with Uq (sl₂) Uq (sl2) global symmetry. Most operators in the theory are defect-ending operators which allows Uq (sl₂) Uq (sl2) symmetry transformations to act on them in a consistent way. We use Coulomb gas techniques to construct correlation functions and compute all OPE coefficients of the model in closed form, as well as to prove that the properties imposed by the quantum group symmetry are indeed satisfied by the correlation functions. In particular, we treat the non-chiral operators present in the theory. Free boson realization elucidates the origin of the defects attached to the operators. We also comment on the role of quantum group in generalized minimal models.
Gabai et al. (Thu,) studied this question.
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