Models of inflation with primordial non-Gaussianities

Abstract

We present a class of models in which the primordial metric fluctuations do not necessarily obey Gaussian statistics. These models are realizations of mechanisms in which non-Gaussianity is first generated by a light scalar field and then transferred into curvature fluctuations during or at the end of inflation. For this class of models we present generic results for the probability distribution functions of the metric perturbation at the end of inflation. It is stressed that finite volume effects can induce non trivial effects that we sketch.

arXiv comment8 pages with 3 eps figures. To appear in Proceedings of the Albert Einstein Century International Conference, UNESCO, Paris, France, 18-22 July 2005

Cited by in corpus (6)

• Enhanced Non-Gaussianity from Excited Initial States
• Signatures of Initial State Modifications on Bispectrum Statistics
• Non-Gaussianities in Multi-field Inflation
• The cosmic microwave background bispectrum from the non-linear evolution of the cosmological perturbations
• Cosmic microwave background bispectrum on small angular scales
• Predictions for Nongaussianity from Nonlocal Inflation