Supersymmetric Hybrid Inflation: Explaining the Spectrum of Cosmological Perturbations through a Multiple-Stage Inflationary Model

TL;DR

This paper proposes a multiple-stage inflationary model based on supersymmetric GUTs to explain features in the galaxy power spectrum and match CMB anisotropy observations.

Contribution

It introduces a novel multi-phase inflationary scenario that connects supersymmetric GUT models with observable cosmological spectra.

Findings

Successfully reproduces the galaxy power spectrum break at $k_b \,\simeq \,0.05 h/Mpc$

Matches the angular power spectrum of CMB anisotropies

Provides a unified inflationary framework for large-scale structure and CMB data

Abstract

We explore the possibility that a multiple-stage inflationary scenario based on supersymmetric GUT models, can account for the break at $k_b \simeq 0.05 h/Mpc$ in the power spectrum of galaxy clustering, while it reproduces the angular power spectrum of cosmic microwave background anisotropies.