Speed of Sound in String Gas Cosmology

TL;DR

This paper calculates the speed of sound in a string gas within a compact space, exploring implications for cosmological stability issues like Jeans instability.

Contribution

It provides a novel computation of sound speed from string thermodynamics in compact spaces, relevant for string gas cosmology models.

Findings

Derived the speed of sound from string thermodynamics.

Discussed potential impact on Jeans instability in cosmology.

Highlighted relevance for stability analysis in string gas models.

Abstract

We consider an ensemble of closed strings in a compact space with stable one cycles and compute the speed of sound resulting from string thermodynamics. Possible applications to the issue of Jeans instability in string gas cosmology are mentioned.