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SUMMARY:Quantum gravity with purely virtual particles: from quantum field 
 theory to primordial cosmology - Damiano Anselmi\, Pisa
DTSTART:20201116T130000Z
DTEND:20201116T140000Z
UID:TALK152785@talks.cam.ac.uk
CONTACT:David Stefanyszyn
DESCRIPTION:I introduce the concept of purely virtual particle\, or fakeon
 \, and show how to use to make sense of quantum gravity as a quantum field
  theory. Then I discuss novel features of the classical limit and derive p
 redictions in inflationary cosmology that could be tested in the forthcomi
 ng years\, paying special attention to the effects of fakeons on perturbat
 ion spectra.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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