Moduli Stabilization in String Gas Cosmology

TL;DR

This paper reviews recent progress in stabilizing extra-dimensional moduli within string gas cosmology, highlighting how string theory's unique symmetries and degrees of freedom can achieve stabilization without additional complex mechanisms.

Contribution

It presents new insights into moduli stabilization in string gas cosmology, emphasizing the potential to do so without warping or fluxes, and discusses remaining challenges.

Findings

Moduli can be stabilized using string gas effects.

String symmetries facilitate stabilization without fluxes.

Remaining problems include addressing cosmological dynamics.

Abstract

String gas cosmology is an approach towards studying the effects of superstring theory on early universe cosmology which is based on new symmetries and new degrees of freedom of string theory. Within this context, it appears possible to stabilize the moduli which describe the size and shape of the extra spatial dimensions without the need of introducing many extra tools such as warping and fluxes. In this lecture, the recent progress towards moduli stabilization in string gas cosmology is reviewed, and outstanding problems for the scenario are discussed.