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T: Fachverband Teilchenphysik

T 96: Hauptvorträge V

T 96.2: Hauptvortrag

Freitag, 23. März 2018, 11:30–12:00, Z6 - HS 0.004

New developments for scattering amplitudes — •Stefan Weinzierl — Universität Mainz

The simplest scattering amplitudes are the tree-level amplitudes. We know how to compute them in terms of Feynman diagrams. As the number of external particles increases, these calculations become rather cumbersome, although the final result is often rather compact. There should be a better way to compute and understand these objects. In this talk I will report on recent developments, which relate these scattering amplitudes to objects in algebraic geometry. It turns out that the amplitudes are just intersection numbers of two differential forms, twisted by a third form. This gives a very appealing geometric interpretation of scattering amplitudes.