Inflation from radion gauge-Higgs potential at Planck scale

TL;DR

This paper investigates a radion gauge-Higgs potential derived from one-loop calculations in a 5D gravity model, demonstrating its capability to produce inflation consistent with astrophysical data and explaining why radion-dominated and hybrid inflation are not feasible.

Contribution

It presents a novel analysis of radion gauge-Higgs potential from a 5D gravity framework, showing its viability for inflation and clarifying the limitations of other inflation types.

Findings

Gauge-Higgs potential can drive inflation consistent with observations

Radion stabilizes physical parameters during inflation

Radion-dominated and hybrid inflation are ruled out in this model

Abstract

We study whether the inflation is realized based on the radion gauge-Higgs potential obtained from the one-loop calculation in the 5-dimensional gravity coupled to a $U(1)$ gauge theory. We show that the gauge-Higgs can give rise to inflation in accord with the astrophysical data and the radion plays a role in fixing the values of physical parameters. We clarify the reason why the radion dominated inflation and the hybrid inflation cannot occur in our framework.