Inflation, Cosmic Perturbations and Non-Gaussianities

TL;DR

This paper reviews the theory of inflationary perturbations, covering linear and nonlinear orders, and discusses various inflation models and their signatures on cosmic perturbations.

Contribution

It provides a comprehensive overview of inflationary perturbations and compares different inflation models based on their cosmic signatures.

Findings

Summary of linear and nonlinear perturbation theory

Comparison of inflation models and their observational signatures

Insights into non-Gaussianities in cosmic perturbations

Abstract

We review the theory of inflationary perturbations. Perturbations at both linear and nonlinear orders are reviewed. We also review a variety of inflation models, emphasizing their signatures on cosmic perturbations.