Starobinsky-Like Inflation and Neutrino Masses in a No-Scale SO(10) Model

TL;DR

This paper develops a no-scale supergravity SO(10) model that predicts inflationary observables akin to the Starobinsky model and explains neutrino masses via a double-seesaw mechanism, aligning with experimental data.

Contribution

It introduces a unified framework combining inflationary predictions and neutrino mass generation within a no-scale supergravity SO(10) model, with detailed analysis of scalar field dynamics.

Findings

Inflationary predictions match Starobinsky model

Neutrino masses consistent with oscillation data

Detailed scalar field and reheating analysis

Abstract

Using a no-scale supergravity framework, we construct an SO(10) model that makes predictions for cosmic microwave background observables similar to those of the Starobinsky model of inflation, and incorporates a double-seesaw model for neutrino masses consistent with oscillation experiments and late-time cosmology. We pay particular attention to the behaviour of the scalar fields during inflation and the subsequent reheating.