BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Brent Pym (McGill University) DTSTART:20210115T170000Z DTEND:20210115T180000Z DTSTAMP:20260423T024654Z UID:TQFT/23 DESCRIPTION:Title: Mu ltiple zeta values in deformation quantization\nby Brent Pym (McGill U niversity) as part of Topological Quantum Field Theory Club (IST\, Lisbon) \n\n\nAbstract\nIn 1997\, Kontsevich gave a universal solution to the defo rmation quantization problem in mathematical physics: starting from any Po isson manifold (the classical phase space)\, it produces a noncommutative algebra of quantum observables by deforming the ordinary\nmultiplication o f functions. His formula is a Feynman expansion whose Feynman integrals gi ve periods of the moduli space of marked holomorphic disks. I will describ e joint work with Peter Banks and Erik Panzer\, in which we prove that Kon tsevich's integrals evaluate to integer-linear\ncombinations of multiple z eta values\, building on Francis Brown's theory of polylogarithms on the m oduli space of genus zero curves.\n LOCATION:https://researchseminars.org/talk/TQFT/23/ END:VEVENT END:VCALENDAR