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SUMMARY:Cosmological Correlators Through the Looking Glass - David Stefany
 szyn (University of Nottingham)
DTSTART:20241125T130000Z
DTEND:20241125T140000Z
UID:TALK217438@talks.cam.ac.uk
CONTACT:Thomas Colas
DESCRIPTION:We will discuss parity violation in the early universe and sho
 w that simple single-field models of inflation cannot produce parity-viola
 ting primordial correlations. To achieve such a signal we therefore need t
 o consider more exotic theories with one intriguing option being the inclu
 sion of addition massive spinning states that can decay into light states 
 and leave parity-violating imprints on late-time observables. We will conc
 entrate on the parity-odd trispectrum generated by the tree-level exchange
  of new fields and show that if these new fields are in the complementary 
 series of de Sitter representations\, the trispectrum is factorised into a
  combination of bispectra and power spectra for general kinematics. This p
 rovides a consistency relation between different cosmological observables.
  
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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