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SUMMARY:Single-valued periods in string theory - Federico Zerbini (CEA/Sac
 lay)
DTSTART:20220908T130000Z
DTEND:20220908T140000Z
UID:TALK178538@talks.cam.ac.uk
DESCRIPTION:Scattering amplitudes predict the probability of interaction o
 f elementary particles. Without assuming any previous knowledge in string 
 theory\, we will review the state of the art in the study of (perturbative
 ) string theory scattering amplitudes\, which can be expressed in terms of
  interesting numbers and special functions. We will focus on the relations
  between amplitudes for open strings (related to gauge theories) and close
 d strings (related to gravity)\, and on how such relations are proven or c
 onjectured to originate from the theory of single-valued periods\, recentl
 y developed by Francis Brown.
LOCATION:Seminar Room 2\, Newton Institute
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