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SUMMARY:Uplifting Massive Graphs from Minkowski to de Sitter - Sadra Jazay
 eri (Imperial College)
DTSTART:20250303T130000Z
DTEND:20250303T140000Z
UID:TALK227500@talks.cam.ac.uk
CONTACT:Thomas Colas
DESCRIPTION:Identifying useful flat-space limits for cosmological correlat
 ors—where they can be expressed in terms of observables in Minkowski spa
 ce—is nontrivial due to their scale-invariant nature. In this talk\, I p
 resent a massive flat-space limit in which cosmological correlators\, indu
 ced by the exchange of heavy fields\, can be expressed in terms of massive
  Feynman graphs in flat space. As a phenomenological application\, I apply
  this flat space limit to compute specific one-loop contributions from hea
 vy fields to primordial non-Gaussianity. \n
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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