BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Rademacher evaluation of one-loop string amplitudes [FOR Virtual S
 eminar]
DTSTART:20250618T090000Z
DTEND:20250618T110000Z
DTSTAMP:20260827T204600Z
UID:indico-event-925@indico.hiskp.uni-bonn.de
DESCRIPTION:Speakers: Lorenz Eberhardt (University of Amsterdam)\n\n I wi
 ll explain a general technique that evaluates one-loop string amplitudes e
 xactly in terms of an infinite series originating from certain Lorentzian 
 singularities in moduli space. For the open string\, this amounts to a rat
 her direct application of the classical Rademacher procedure developed in 
 the context of analytic number theory. For the closed string I will explai
 n a non-holomorphic extension of the Rademacher procedure that applies to 
 any integral of a modular function (with certain boundedness conditions). 
 I will then discuss the concrete example of the one-loop four-graviton sca
 ttering amplitude for type II superstrings and the physics we can extract 
 from these methods. This talk is based on joint work with M.M. Baccianti\,
  J. Chandra\, T. Hartman and S. Mizera.\n\nhttps://indico.hiskp.uni-bonn.d
 e/event/925/
URL:https://indico.hiskp.uni-bonn.de/event/925/
END:VEVENT
END:VCALENDAR