Starobinsky-like inflation, supercosmology and neutrino masses in no-scale flipped SU(5)

John Ellis, Marcos A.G. Garcia, Natsumi Nagata, Dimitri V. Nanopoulos, Keith A. Olive

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

We embed a flipped SU(5) × U(1) GUT model in a no-scale supergravity framework, and discuss its predictions for cosmic microwave background observables, which are similar to those of the Starobinsky model of inflation. Measurements of the tilt in the spectrum of scalar perturbations in the cosmic microwave background, ns, constrain significantly the model parameters. We also discuss the model's predictions for neutrino masses, and pay particular attention to the behaviours of scalar fields during and after inflation, reheating and the GUT phase transition. We argue in favor of strong reheating in order to avoid excessive entropy production which could dilute the generated baryon asymmetry.

Original languageEnglish (US)
Article number006
JournalJournal of Cosmology and Astroparticle Physics
Volume2017
Issue number7
DOIs
StatePublished - Jan 1 2017

    Fingerprint

Keywords

  • baryon asymmetry
  • ination
  • neutrino masses from cosmology
  • supersymmetry and cosmology

Cite this