Boundary correlators in supergroup WZNW models Original Research Article

We investigate correlation functions for maximally symmetric boundary conditions in the WZNW model on image. Special attention is payed to volume filling branes. Generalizing earlier ideas for the bulk sector, we set up a Kac–Wakimoto-like formalism for the boundary model. This first order formalism is then used to calculate bulk-boundary 2-point functions and the boundary 3-point functions of the model. The note ends with a few comments on correlation functions of atypical fields, point-like branes and generalizations to other supergroups.