Cosmological attractor inflation from the RG-improved Higgs sector of finite gauge theory

TL;DR

This paper explores inflationary models derived from the RG-improved Higgs sector of finite gauge theories, showing they align well with observational data and belong to the same class of cosmological attractors as other prominent models.

Contribution

It introduces a new inflationary scenario based on RG-improved potentials in finite gauge models, demonstrating its consistency with observations and its relation to existing attractor models.

Findings

Inflationary parameters $n_s$ and $r$ match observational data.

Models are in the same class as $R^2$ and Higgs-driven inflation.

Quantum corrections are crucial for successful inflation.

Abstract

The possibility to construct an inflationary scenario for renormalization-group improved potentials corresponding to the Higgs sector of finite gauge models is investigated. Taking into account quantum corrections to the renormalization-group potential which sums all leading logs of perturbation theory is essential for a successful realization of the inflationary scenario, with very reasonable parameter values. The inflationary models thus obtained are seen to be in good agreement with the most recent and accurate observational data. More specifically, the values of the relevant inflationary parameters, $n_s$ and $r$, are close to the corresponding ones in the $R^2$ and Higgs-driven inflation scenarios. It is shown that the model here constructed and Higgs-driven inflation belong to the same class of cosmological attractors.