Higgs Inflation on Braneworld

TL;DR

This paper explores a Higgs inflation model within a warped DGP braneworld, addressing key theoretical challenges and aligning with observational data from PLANCK to constrain model parameters.

Contribution

It introduces a Higgs inflation scenario on a warped DGP brane that overcomes the effective field theory validity issues present in standard 4D models.

Findings

Primordial perturbations are consistent with observations.

The model's parameters are constrained by PLANCK data.

The inflation energy scale is nearly fixed by low-l PLANCK data.

Abstract

We discuss a Higgs inflation model in the warped DGP braneworld background. It generates reasonable primordial perturbations. At the same time with enhanced non-minimal coupling it overcomes the severe problem in the Higgs inflation in 4 dimension, which says that the effective field theory become invalid at an energy scale far below the energy scale for inflation exit. Furthermore we present the constraints for the parameters confront to PLANCK and related observations. PLANCK low-l data almost fixes the inflation energy scale in this Higgs inflation model with specific brane parameters.