Theoretical High Energy Seminar – Niels Bohr Institute - University of Copenhagen

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Theoretical High Energy Seminar

We consider recent progress in amplitude computations in gravity and QED. We focus especially on simplifications of formal amplitude expressions in the case were color factors are trivial. The resulting 'sum over orderings' of these expressions is shown to lead to surprising simplifications. These simplifications are linked to improved UV properties of gravity theories with respect to naive powercounting.