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SUMMARY:Inflationary Tailoring: Dressing and Cutting in the Early Universe
DTSTART:20260526T120000Z
DTEND:20260526T130000Z
DTSTAMP:20260520T052200Z
UID:indico-event-106@indico.zdv.uni-mainz.de
DESCRIPTION:Speakers: Joe Marshall (Durham U.)\n\nThe hypothesised period 
 of the early universe known as inflation is interesting for several reason
 s. Firstly\, it is a regime in which both quantum effects and the curvatur
 e of spacetime are important\, and the characteristic energy scale is very
  high\, meaning beyond-standard-model physics could play a role. Secondly\
 , the effects of quantum fluctuations during this period ought to be obser
 vable in the cosmic microwave background today. And thirdly\, inflation is
  approximately described by de Sitter space\; a maximally symmetric spacet
 ime which many believe ought to permit a holographic description.\nIn this
  context\, wavefunction coefficients have been studied for many years now\
 , being the objects hypothesised to be dual to CFT correlators in a hologr
 aphic description. However\, they are not the observable quantities. In-in
  correlators are constructed from wavefunction coefficients and yet\, rema
 rkably\, recent evidence suggests that they are often simpler objects than
  their constituent parts. In this talk\, I will explain how in-in correlat
 ors in de Sitter can be directly uplifted from flat-space amplitudes via 
 “dressing rules” for particular theories. We will then see how the ana
 lytic properties of these correlators can be investigated by applying stan
 dard unitarity cutting methods from flat space to this representation.\n\n
 https://indico.zdv.uni-mainz.de/event/106/
LOCATION:R. 05-127 (Lorentz-Room)
URL:https://indico.zdv.uni-mainz.de/event/106/
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