**Frank Neumann**

University of Leicester, U.K.

September 22, 2011

**Towards the rational homotopy type of moduli stacks of G-bundles on curves**:
We will discuss some ideas on how to determine the rational homotopy type of some moduli stacks of principal G-bundles on an algebraic curve over the complex numbers. This relies on a good notion of homotopy types of associated topological stacks and an analysis of the Haefliger-Brown-Szarba model for the rational homotopy type of mapping spaces. This work is in progress with U. Bujis (Barcelona).