WMAP5 Observationnal Constraints on Braneworld New Inflation Model

TL;DR

This paper investigates a new inflation model within the Randall-Sundrum braneworld framework, deriving analytical perturbation spectra and comparing them with WMAP5 data to identify compatible parameter ranges.

Contribution

It introduces a novel inflation potential in the braneworld context and derives analytical perturbation spectra using the Slow-Roll approximation at high energy.

Findings

Certain parameter values yield perturbation spectra consistent with WMAP5 observations.

Analytical expressions for perturbation spectra are derived in the high energy limit.

The model's viability depends on specific parameter choices.

Abstract

We study a new inflation potential in the framework of the Randall-Sundrum type 2 Braneworld model. Using the technic developped in(Phys. Rev. D75, 123504 (2007).1), we consider both an monomial and a new inflation potentials and apply the Slow-Roll approximation in high energy limit, to derive analytical expression of relevant perturabtion spectrum. We show that for some values of the parameter n of the potential, we obtain an perturbation spectrum wich present a good agreement with recent WMAP5 observations.