Non-minimal Higgs inflation within holographic cosmology

TL;DR

This paper develops a Higgs inflation model within holographic cosmology, showing it aligns with observational data for specific parameters but is limited outside those conditions.

Contribution

It introduces a Higgs inflationary model in holographic cosmology with corrected parameters and compares its predictions to observational data.

Findings

Spectral index n_s = 0.965 for N≈58

Tensor-to-scalar ratio r = 0.021 for N≈58

Model matches Planck data but is ruled out for other N values

Abstract

We derive a Higgs inflationary model in the context of holographic cosmology, where we consider a universe filled with a Higgs field non-minimally coupled to gravity in a slow-roll regime. The amplitude of density (scalar) perturbations is calculated. In this regard, we show that the background and perturbative parameters characterising the inflationary era are related to the standard one through corrections terms. We found that for the e-fold number $N\sim 58$, the spectral index,$n_{r}$, and the tensor-to-scalar ratio,$r$, values are $0.965$ and $0.021$, respectively, which are in agreement with 2018 Planck observational data. However, as soon as we move from $N\sim 58$, the model is ruled out by the current data.