# Theoretical High Energy Seminar

## Niklas Beisert (ETH Zurich)

### Scattering in N=6 Chern-Simons Theory and Superconformal Symmetry

### Abstract:

Scattering amplitudes in three-dimensional N=6 Chern-Simons theory are shown to be non-invariant with respect to the free representation of the osp(6|4) symmetry generators. At tree and one-loop level these "anomalous" terms occur only for non-generic, singular configurations of the external momenta and can be used to determine the form of the amplitudes. In particular we show that the symmetries predict that the one-loop six-point amplitude is non-vanishing and confirm this by means of an explicit calculation using generalized unitarity methods. We comment on the implications of this finding for any putative Wilson loop/amplitude duality in N=6 Chern-Simons theory.

### Details

Date: Wednesday, 13/6/12

Time: 11:15

Place: Auditorium D, Blegdamsvej 17, 2100, Copenhagen