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SUMMARY:One Loop Integrands for Scattering Amplitudes from the Riemann Sph
 ere - Ricardo Monteiro (CERN - European Organisation for Nuclear Research)
DTSTART:20160630T090000Z
DTEND:20160630T100000Z
UID:TALK66625@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Worldsheet formulations of quantum field theories have had wid
 e-ranging impact on the study of scattering amplitudes. However\, the math
 ematical framework becomes very challenging on the higher-genus worldsheet
 s required to describe loop effects. I will describe how\, in such worldsh
 eet models based on the scattering equations\, formulae on genus one&nbsp\
 ;surfaces can be transformed to ones on the Riemann sphere. I will present
  formulae for the one-loop integrands of scattering amplitudes in gravity 
 and gauge theory\, with or without supersymmetry.<br><br>Related Links<ul>
 <li><a target="_blank" rel="nofollow">http://arxiv.org/abs/1507.00321</a><
 /li><li><a target="_blank" rel="nofollow">http://arxiv.org/abs/1511.06315<
 /a></li></ul>
LOCATION:Seminar Room 1\, Newton Institute
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