Tachyonic Inflation in the Braneworld Scenario

TL;DR

This paper explores tachyon-driven inflation within the braneworld framework, demonstrating that observationally consistent inflation is possible under specific constraints on fundamental string and braneworld parameters.

Contribution

It introduces a model of tachyonic inflation in the braneworld scenario and identifies parameter bounds ensuring compatibility with observations.

Findings

Inflation can be achieved with tachyon fields in braneworld models.

Constraints on five-dimensional mass scale and string parameters are derived.

The model aligns with current cosmological observational data.

Abstract

We consider cosmological inflation driven by the rolling tachyon in the context of the braneworld scenario. We show that sufficient inflation consistent with the observational constraints can be achieved for well defined upper limits on the five-dimensional mass scale, string mass scale and the string coupling for the bosonic string.