On structure constants and fusion rules in the SL(2,C)/SU(2)-WZNW model Original Research Article

A closed formula for the structure constants in the SL(2,C)/SU(2)-WZNW model is derived by a method previously used in Liouville theory. With the help of a reflection amplitude that follows from the structure constants one obtains a proposal for the fusion rules from canonical quantization. Taken together these pieces of information allow for an unambiguous definition of any genus zero n-point function.