Multi-field inflation and cosmological perturbations
General Relativity and Quantum Cosmology
2017-02-08 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We provide a concise review on multi-field inflation and cosmological perturbations. We discuss convenient and physically meaningful bases in terms of which perturbations can be systematically studied. We give formal accounts on the gauge fixing conditions and present the perturbation action in two gauges. We also briefly review non-linear perturbations.
Cite
@article{arxiv.1606.06971,
title = {Multi-field inflation and cosmological perturbations},
author = {Jinn-Ouk Gong},
journal= {arXiv preprint arXiv:1606.06971},
year = {2017}
}
Comments
(v1) 59 pages, 8 figures, invited review for International Journal of Modern Physics D; (v2) 60 pages, typos corrected and references added