Inflation and Brane Gases

TL;DR

This paper proposes a novel inflation mechanism in brane gas cosmology where a co-dimension one brane gas induces power-law inflation in the bulk, especially within Type IIB superstring theory, after dilaton stabilization.

Contribution

It introduces a new inflation scenario driven by a brane gas with a specific equation of state, applicable to Type IIB superstring theory, and discusses its potential and challenges.

Findings

Co-dimension one brane gas can induce power-law inflation.

Inflation mechanism is viable after dilaton stabilization.

Potential application in Type IIB superstring theory.

Abstract

We investigate a new way of realizing a period of cosmological inflation in the context of brane gas cosmology. It is argued that a gas of co-dimension one branes, out of thermal equilibrium with the rest of the matter, has an equation of state which can - after stabilization of the dilaton - lead to power-law inflation of the bulk. The most promising implementation of this mechanism might be in Type IIB superstring theory, with inflation of the three large spatial dimensions triggered by ``stabilized embedded 2-branes''. Possible applications and problems with this proposal are discussed.