BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Reconstructing the inflationary landscape with cosmological data
DTSTART:20180723T140000
DTEND:20180723T153000
DTSTAMP:20260510T055549Z
UID:d5f3e514e100d49e4d542125f359f48dfe439279d15587cfce3b1671
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Gonzalo Palma (University of Chile)\nI will show that the 
 shape of the inflationary landscape potential may be constrained by analyz
 ing cosmological data. The quantum fluctuations of fields orthogonal to th
 e inflationary trajectory may have probed the structure of the local lands
 cape potential\, inducing non-Gaussianity (NG) in the primordial distribut
 ion of the curvature perturbations responsible for the cosmic microwave ba
 ckground (CMB) anisotropies and our universe's large scale structure. The 
 resulting type of NG (dubbed tomographic NG) is determined by the shape of
  the landscape potential\, and cannot be fully characterized by 3- or 4-po
 int correlation functions. I will show how to derive an expression for the
  profile of this probability distribution function (PDF) in terms of the l
 andscape potential\, and show how this can be inverted in order to reconst
 ruct the potential with the help of CMB observations. While current observ
 ations do not allow us to infer a significant level of tomographic NG\, fu
 ture surveys may improve the possibility of constraining this class of pri
 mordial signatures.
LOCATION:BSP 727 https://plan.epfl.ch/?room==BSP%20727
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR