Conjugacy Classes in Kac-Moody Groups and Principal G-Bundles over   Elliptic Curves
  For a simple complex Lie group G the connected components of the moduli space of G-bundles over an elliptic curve are weighted projective spaces. In this note we will provide a new proof of this result using the invariant theory of Kac-Moody groups, in particular the action of the (twisted) Coxeter element on the root system of G. 
Stephan Mohrdieck and Robert Wendt