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SUMMARY:Probing the Inflationary Field Content with Primordial Gravitation
 al Waves and more - Matteo Fasiello (ICG\, Portsmouth) 
DTSTART:20190603T120000Z
DTEND:20190603T130000Z
UID:TALK125875@talks.cam.ac.uk
CONTACT:Sadra Jazayeri
DESCRIPTION:The inflationary paradigm\, already in its simplest disguises\
 , has been spectacularly successful when it comes to agreement with observ
 ations. However\, there’s a lot we do not yet know about inflation:\n- w
 hat is its energy scale?\n- how about its particle content?\n- how did inf
 lation begin?\n…\nNew cosmological probes (at all scales\, from CMB to i
 nterferometers) will soon put some of our best ideas to the test.\nThe ans
 wers to these questions are bound to be transformative of our understandin
 g of cosmology and\, possibly\, also particle physics. A high-scale inflat
 ion\, for example\, would automatically be a portal to otherwise unaccessi
 ble energy scales. In this talk I will review some recent work on the infl
 ationary particle content and then focus on a model that includes a pseudo
  scalar field coupled with SU(2) gauge fields. This setup can generate a c
 hiral gravitational waves signal. I will then detail on how the parameter 
 space of the theory supports a blue tensor spectrum and large tensor as we
 ll as mixed non-Gaussianities.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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