No Image

Finite vs. Infinite Decompositions in Conformal Embeddings

Tuesday October 25th, 2016 Rafael Mrđen 0

Abstract: Building on work of the first and last author, we prove that an embedding of simple affine vertex algebras , corresponding to an embedding of a maximal equal rank reductive subalgebra  into a simple Lie algebra , is conformal if and only if the corresponding central charges are equal. […]

No Image

Whittaker modules for the affine Lie algebra A_1 ^{(1)}

Monday June 6th, 2016 leo 0

We prove the irreducibility of the universal non-degenerate Whittaker modules for the affine Lie algebra of type  with noncritical level. These modules can become simple Whittaker modules over with the same Whittaker function and central charge. We have to modulo a central character for sl2sl2 to obtain simple degenerate Whittaker […]