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Thursday, July 23, 2020

Thursday, July 23, 2020 — 2:30 PM EDT

Title: Chord diagrams, colours, and QED

Speaker: Marcel Golz Affiliation: University of Waterloo Zoom: Contact Karen Yeats

Abstract:

Feynman graphs in quantum electrodynamics are essentially chord diagrams with photon edges taking the role of chords attached to lines or cycles given by electron edges. The associated Feynman integrals involve traces of Dirac gamma matrices whose computation leads to large sums of scalar Feynman integrals (cf. the earlier talk by O. Schnetz).

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