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DTSTART;TZID=America/Toronto:20200723T143000
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URL:/combinatorics-and-optimization/events/algebraic-co
 mbinatorics-seminar-marcel-golz
SUMMARY:Algebraic Combinatorics Seminar - Marcel Golz
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Chord diagrams\, colours\, and QED\n\nSpeak
 er:\n Marcel Golz\n\nAffiliation:\n University of À¶Ý®ÊÓƵ\n\nZoom:\n Cont
 act Karen Yeats\n\nABSTRACT:\n\nFeynman graphs in quantum electrodynamics 
 are essentially chord\ndiagrams with photon edges taking the role of chord
 s attached to lines\nor cycles given by electron edges. The associated Fey
 nman integrals\ninvolve traces of Dirac gamma matrices whose computation l
 eads to\nlarge sums of scalar Feynman integrals (cf. the earlier talk by O
 .\nSchnetz).\n 
DTSTAMP:20250526T023434Z
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