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CATEGORIES:Cosmology Lunch
SUMMARY:On the physical spectra of primordial perturbation
 s from inflation - Silvia Pla Garcia (King's Colle
 ge London)
DTSTART;TZID=Europe/London:20240226T130000
DTEND;TZID=Europe/London:20240226T140000
UID:TALK212188AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/212188
DESCRIPTION:It has been suggested that the effects of renormal
 ization significantly reduce the amplitude of the 
 inflationary spectra at scales measurable in the c
 osmic microwave background. Via a gauge-invariant 
 analysis\, we compute the renormalized scalar and 
 tensor power spectra and follow their evolution in
  an inflating universe that undergoes a transition
  to an FRW phase with a growing horizon.  For pert
 urbations originating from Minkowski vacuum fluctu
 ations\, we show that the standard prediction for 
 the spectrum on superhorizon scales is a late-time
  attractor\, while it is UV finite at all times. O
 ur result is independent of the equation of state 
 after inflation\, showing that the standard predic
 tion is fully robust.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Roo
 m]
CONTACT:Thomas Colas
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