BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Franz Herzog (The University of Edinburgh)
DTSTART:20211001T130000Z
DTEND:20211001T140000Z
DTSTAMP:20260423T004548Z
UID:ACPMS/9
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/ACPMS/9/">Th
 e Hopf algebra of IR divergences of Feynman graphs</a>\nby Franz Herzog (T
 he University of Edinburgh) as part of Algebraic and Combinatorial Perspec
 tives in the Mathematical Sciences\n\n\nAbstract\nIt is by now very well k
 nown that the structure of UV divergences Feynman Integrals\, and their as
 sociated graphs\, can be described elegantly in a Hopf algebra originally 
 developed by Kreimer and Connes. Beyond UV divergences Feynman Integrals a
 lso suffer from IR\, long-distance\, divergences. I will present a new Hop
 f-algebraic formulation which allows to simultaneously treat both the IR a
 nd the UV. Remarkably in this framework the IR and UV counterterm maps are
  inverse to each other on the group of characters of the Hopf algebra.\n
LOCATION:https://researchseminars.org/talk/ACPMS/9/
END:VEVENT
END:VCALENDAR