Finite vs infinite decompositions in conformal embeddings

Drazen Adamovic, Victor G. Kac, Pierluigi Moseneder Frajria +2

Building on work of the first and last author, we prove that an embedding of simple affine vertex algebras $V_{\mathbf{k}}({\mathfrak{g}}^0)\subset V_k(\mathfrak{g})$, corresponding…