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arXiv · 1906.08483

Cosmology with a Master Coupling in Flipped SU(5) $\times$ U(1): The $λ_6$ Universe

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

We propose a complete cosmological scenario based on a flipped SU(5) $\times$ U(1) GUT model that incorporates Starobinsky-like inflation, taking the subsequent cosmological evolution carefully into account. A single master coupling, $λ_6$, connects the singlet, GUT Higgs and matter fields, controlling 1) inflaton decays and reheating, 2) the gravitino production rate and therefore the non-thermal abundance of the supersymmetric cold dark matter particle, 3) neutrino masses and 4) the baryon asymmetry of the Universe.

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John Ellis, Marcos A. G. Garcia, Natsumi Nagata, Dimitri V. Nanopoulos, Keith A. Olive. 2019-06-20. Cosmology with a Master Coupling in Flipped SU(5) $\times$ U(1): The $λ_6$ Universe. https://doi.org/10.1016/j.physletb.2019.134864

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