Quantum Group Generators in Conformal Field Theory
Jens Schnittger
Abstract
These are notes of a seminar given at the 30th International Symposium on the Theory of Elementary Particles, Berlin-Buckow, August 1996. The material is derived from collaborations with E. Cremmer and J.-L. Gervais, and C. Klimcik, and is partially new. Within the general framework of Poisson-Lie symmetry, we discuss two approaches to the problem of constructing moment maps, or q-deformed Noether charges, that generate the quantum group symmetry which appears in many conformal field theories. Concretely, we consider the case of Uq(sl(2)) and the operator algebra that describes Liouville theory and other models built from integer powers of screenings in the Coulomb gas picture.
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