Flipped GUT inflation

John Ellis, Tomás E. Gonzalo, Julia Harz, Wei Chih Huang

Research output: Contribution to journalArticleResearchpeer-review

15 Citations (Scopus)


We analyse the prospects for constructing hybrid models of inflation that provide a dynamical realisation of the apparent closeness between the supersymmetric GUT scale and the possible scale of cosmological inflation. In the first place, we consider models based on the flipped SU(5)×U(1) gauge group, which has no magnetic monopoles. In one model, the inflaton is identified with a sneutrino field, and in the other model it is a gauge singlet. In both cases we find regions of the model parameter spaces that are compatible with the experimental magnitudes of the scalar perturbations, As, and the tilt in the scalar perturbation spectrum, ns, as well as with an indicative upper limit on the tensor-to-scalar perturbation ratio, r. We also discuss embeddings of these models into SO(10), which is broken at a higher scale so that its monopoles are inflated away.

Original languageEnglish
Article number039
Number of pages18
JournalJournal of Cosmology and Astroparticle Physics
Issue number3
Publication statusPublished - 23 Mar 2015


  • Cosmology connection
  • Cosmology of theories beyond the SM
  • Inflation
  • Particle physics
  • Supersymmetry and cosmology

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