Braneworld non-minimal inflation with induced gravity

TL;DR

This paper investigates a braneworld inflation model with a non-minimally coupled inflaton field, analyzing perturbations and inflation parameters in different frames, and compares its predictions with observational data to assess viability.

Contribution

It provides a detailed analysis of inflation on a warped DGP braneworld with non-minimal coupling, including perturbation calculations in Jordan and Einstein frames, and evaluates model viability against observations.

Findings

Model viability confirmed within observational constraints

Comparison shows differences between Jordan and Einstein frames

Perturbation analysis supports the model's consistency with data

Abstract

We study cosmological inflation on a warped DGP braneworld where inflaton field is non-minimally coupled to induced gravity on the brane. We present a detailed calculation of the perturbations and inflation parameters both in Jordan and Einstein frame. We analyze the parameters space of the model fully to justify about the viability of the model in confrontation with recent observational data. We compare the results obtained in these two frames also in order to judge which frame gives more acceptable results in comparison with observational data.