Primordial Non-Gaussianity

TL;DR

This paper reviews the current understanding and methods for modeling and detecting primordial non-Gaussianity in cosmological perturbations, focusing on inflation models and observational searches in CMB and large-scale structure.

Contribution

It provides a comprehensive overview of inflation-based models of non-Gaussianity and summarizes observational techniques for detecting these signatures in cosmological data.

Findings

Summary of inflationary models producing non-Gaussianity

Overview of observational search strategies in CMB and large-scale structure

Current status of constraints on primordial non-Gaussianity

Abstract

Here we review the present status of modelling of and searching for primordial non-Gaussianity of cosmological perturbations. After introducing the models for non-Gaussianity generation during inflation, we discuss the search for non-Gaussian signatures in the Cosmic Microwave Background and in the Large-Scale Structure of the Universe.