Minisuperspace limit of the AdS3 WZNW model

Understand

We derive the three-point function of the AdS3 WZNW model in the minisuperspace limit by Wick rotation from the H3+ model.

• The result is expressed in terms of Clebsch-Gordan coefficients of the Lie algebra sl(2,R).
• We also introduce a covariant basis of functions on AdS3, which can be interpreted as bulk-boundary propagators.