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SUMMARY:Stephan Stieberger (MPP)
DTSTART:20200618T090000Z
DTEND:20200618T100000Z
DTSTAMP:20260423T022842Z
UID:RENC-THEO/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/RENC-THEO/4/
 ">Symmetries of celestial amplitudes</a>\nby Stephan Stieberger (MPP) as p
 art of Rencontres Théoriciennes\n\nLecture held in Institut Henri Poincar
 é\, Room 314 unless specified otherwise.\n\nAbstract\nAbstract: The celes
 tial sphere is the target space for the proposal of flat space holography 
 in which four-dimensional physics is encoded in two-dimensional celestial 
 conformal field theory (CCFT).\nAfter giving some motivations we introduce
  the concepts and properties of physics on the celestial sphere.\nWe shall
  discuss symmetries and properties of celestial amplitudes. After introduc
 ing the concept of soft theorems on the celestial sphere we shall give an 
 explicit field realization of the operators generating superrotations and 
 supertranslations. Finally we construct the full extended BMS Algebra of C
 CFT.\n
LOCATION:https://researchseminars.org/talk/RENC-THEO/4/
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