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SUMMARY:Bootstrapping Inflationary Fluctuations - Guillherm Pimentel (UvA)
DTSTART:20190520T120000Z
DTEND:20190520T130000Z
UID:TALK121366@talks.cam.ac.uk
CONTACT:Sadra Jazayeri
DESCRIPTION:In flat space\, four point scattering amplitudes at weak coupl
 ing can be fully determined from Lorentz symmetry\, unitarity and causalit
 y. The resulting scattering amplitude depends on model details only throug
 h coupling constants and the particle content of the theory. I will show h
 ow the analogous story works in the case of inflationary fluctuations. We 
 found explicit expressions for inflationary three and four-point functions
 \, whose shapes depend on the field content of the theory\, and do not dep
 end on the specific inflationary model\, as long as the fluctuations minim
 ally break de Sitter symmetry. This ``cosmological bootstrap” is a first
  step towards classifying all possible shapes of primordial non-gaussianit
 y\, which can be searched for in experimental data.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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