Talk page
Title:
Shedding some old light on deformed amplitudes in N=4 SYM
Speaker:
Abstract:
Some recent studies of the infra-red divergences have considered deformations of on-shell diagrams, as obtained by dressing the diagrams with complex helicities. Structures like this were described in the early days of twistor theory, though in a more elementary context. They arose naturally in the original formulation of twistor diagrams as compact contour integrals in twistor space. I will review some of this old material and the approach to regularisation of divergences that motivated it.
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