String Gas Cosmology

TL;DR

String gas cosmology explores how string theory's unique features can influence the universe's earliest moments and potentially offer an alternative to inflationary models, with ongoing research reviewing its current status.

Contribution

This paper reviews the current status of string gas cosmology, highlighting its basis in string theory and its potential as an alternative to inflation.

Findings

String gas cosmology incorporates string theory features into early universe models.

It offers a possible alternative to inflationary cosmology.

The review summarizes recent progress and challenges in the field.

Abstract

String gas cosmology is a string theory-based approach to early universe cosmology which is based on making use of robust features of string theory such as the existence of new states and new symmetries. A first goal of string gas cosmology is to understand how string theory can effect the earliest moments of cosmology before the effective field theory approach which underlies standard and inflationary cosmology becomes valid. String gas cosmology may also provide an alternative to the current standard paradigm of cosmology, the inflationary universe scenario. Here, the current status of string gas cosmology is reviewed.