Résumé / Abstract Journal-club_Univers

Journal-club Univers / Journal-club Universe

« Primordial non-Gaussianity from preheating »

Andrei Frolov
Department of Physics, Simon Fraser University (Burnaby, Canada)

I will talk about phase transitions and entropy production at the end of inflation in the early universe. Dynamics of preheating is non-trivial, and can convert isocurvature modes of light fields generated during inflation into curvature fluctuations imprinted into observable CMB temperature anisotropy. Curvature fluctuations thus produced are typically non-Gaussian. I will discuss their observational signatures, and our efforts to construct local non-Gaussianity estimators to map out such signal in real data.
mardi 28 mai 2019 - 11:15
Salle 281, Institut d'Astrophysique
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