Light-by-Light Scattering Effect in Light-Cone Supergraphs
Jun, 2010Citations per year
Abstract: (arXiv)
We give a relatively simple explanation of the light-cone supergraph prediction for the UV properties of the maximally supersymmetric theories. It is based on the existence of a dynamical supersymmetry which is not manifest in the light-cone supergraphs. It suggests that N=4 supersymmetric Yang-Mills theory is UV finite and N=8 supergravity is UV finite at least until 7 loops whereas the -point amplitudes have no UV divergences at least until . Here we show that this prediction can be deduced from the properties of light-cone supergraphs analogous to the light-by-light scattering effect in QED. A technical aspect of the argument relies on the observation that the dynamical supersymmetry action is, in fact, a compensating field-dependent gauge transformation required for the retaining the light-cone gauge condition .- photon photon: scattering
- gauge field theory: Yang-Mills
- supersymmetry: 4
- transformation: gauge
- supergravity: 8
- ultraviolet
- light cone
- quantum electrodynamics
- light cone gauge
- perturbation theory: higher-order
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