Scattering amplitudes on the Coulomb branch of N=4 super Yang-Mills

Abstract

We discuss planar scattering amplitudes on the Coulomb branch of N=4 super Yang-Mills. The vacuum expectation values on the Coulomb branch can be used to regulate infrared divergences. We argue that this has a number of conceptual as well as practical advantages over dimensional regularisation.

Comments: 6 pages, 2 figures; talk given at 'Loops and Legs in Quantum Field Theory' (April 25-30, 2010