Anisotropic Power Law Inflation from Rolling Tachyons

TL;DR

This paper presents an explicit anisotropic power law inflation solution derived from a rolling tachyon model with non-minimal coupling, demonstrating its perturbative stability within string theory frameworks.

Contribution

It introduces a novel anisotropic inflationary solution from a rolling tachyon with non-minimal coupling, expanding the understanding of string-inspired cosmological models.

Findings

Explicit anisotropic power law inflation solution provided

Solution is shown to be perturbatively stable

Non-minimal coupling is key to generating anisotropy

Abstract

We provide an explicit solution representing an anisotropic power law inflation within the framework of rolling tachyon model. This is generated by allowing a non-minimal coupling between the tachyon and the world-volume gauge field on non-BPS D3 brane. We also show that this solution is perturbatively stable.