Subregular nilpotent orbits and explicit character formulas for modules over affine Lie algebras

Roman Bezrukavnikov, Victor Kac, Vasily Krylov

Let $\mathfrak{g}$ be a simple finite dimensional complex Lie algebra and let $\hat{\mathfrak{g}}$ be the corresponding affine Lie algebra. Kac and Wakimoto observed that in so…