Primordial non-Gaussianities
Cosmology and Nongalactic Astrophysics
2015-05-27 v1 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
This contribution gives an overview on primordial non-Gaussianities from a theoretical perspective. After presenting a general formalism to describe nonlinear cosmological perturbations, several classes of models, illustrated with examples, are discussed: multi-field inflation with non-standard Lagrangians, modulaton fields, curvaton fields. In the latter case, a special emphasis is put on the isocurvature perturbations, which could leave a specific signature in non-Gaussianities.
Cite
@article{arxiv.1102.5052,
title = {Primordial non-Gaussianities},
author = {David Langlois},
journal= {arXiv preprint arXiv:1102.5052},
year = {2015}
}
Comments
Invited talk at YKIS (Yukawa International Seminar) 2010: "Cosmology -The Next Generation-", 28 June - 2 July 2010, Kyoto, Japan