Boundary states for WZW models
arXiv:hep-th/0202067 · doi:10.1016/S0550-3213(02)00559-X
Abstract
The boundary states for a certain class of WZW models are determined. The models include all modular invariants that are associated to a symmetry of the unextended Dynkin diagram. Explicit formulae for the boundary state coefficients are given in each case, and a number of properties of the corresponding NIM-reps are derived.
34 pages, harvmac (b), 4 eps-figures. One reference added; some minor typos, as well as the $A_2$ embedding into $D_4$, are corrected