Analytical study of classic models of Hybrid Inflation

TL;DR

This paper analyzes classic and modified hybrid inflation models, examining their potential shapes, gravitational wave predictions, and comparing their power spectra with observational data to assess their viability.

Contribution

It provides a comparative analysis of hybrid inflation models, including their potential forms and gravitational wave predictions, against current observational data.

Findings

Different models predict varying gravitational wave amplitudes.

Some models are consistent with BICEP2/Keck and Planck data.

The shape of the inflationary potential influences observable signatures.

Abstract

We study the classic hybrid inflation model in its original and modified forms and show the shape of the inflationary potentials and analyze the amount of primordial gravitational waves each model predicts. We compare the resulting EE-mode and BB-mode power spectrum with the data from the joint BICEP2/Keck and Planck collaboration to check the viability of each model.