Résumé / Abstract Seminaire_GReCO

"Local and non-local features in the primordial power spectrum and associated non-Gaussianities"

D. Kumar Hazra
Harish-Chandra Research Institute (HRI) (Allahabad, Inde)

This talk is divided into two parts. In the first half of the talk, I will discuss the generation of localized as well as non-local features (i.e. characteristic and repeated patterns that extend over a wide range of scales) in the inflationary scalar power spectrum that lead to a better fit to the CMB data than the conventional power law spectrum. In the second half, I will discuss the non-Gaussianities that arise in such scenarios, and how they compare with the current observational limits on the parameter fNL.

jeudi 22 septembre 2011 - 11:00
Salle des séminaires Évry Schatzman,
Institut d'Astrophysique de Paris

Page web du séminaire / Seminar's webpage