PIRSA:10060013  ( Flash Presentation , Windows Presentation , Windows Video File , MP3 , PDF) Which Format?

Speaker(s): Kostas Skenderis

Abstract: We discuss holographic models for the inflationary epoch. We show how cosmological observables such as the primordial spectrum and non-Gaussianities can be computed via computations of correlation functions of a dual three dimensional QFT (without gravity!) We present a general class of models that have the following universal features: (i) they have a nearly scale invariant spectrum of small amplitude primordial fluctuations, (ii) the scalar spectral index runs as alpha_s = - (n_s-1), (iii) the three point function of density perturbations is exactly equal to the sum of the local and equilateral form with f_{NL}^{local} = 6 f_{NL}^{equil} = 20/3.

Date: 15/06/2010 - 4:15 pm

Collection: Cosmological Frontiers in Fundamental Physics

URL: http://pirsa.org/10060013/  Share: