Cosmology with a master coupling in flipped SU(5)×U(1): The λ6 universe

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

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We propose a complete cosmological scenario based on a flipped SU(5)×U(1) GUT model that incorporates Starobinsky-like inflation, taking the subsequent cosmological evolution carefully into account. A single master coupling, λ6, 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.

Original languageEnglish (US)
Article number134864
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
StatePublished - Oct 10 2019

Bibliographical note

Funding Information:
The work of J.E. was supported partly by the United Kingdom STFC Grant ST/P000258/1 and partly by the Estonian Research Council via a Mobilitas Pluss grant. The work of M.A.G.G. was supported by the DOE grant DE-SC0018216 . The work of N.N. was supported by the Grant-in-Aid for Young Scientists B (No. 17K14270 ) and Innovative Areas (No. 18H05542 ). The work of D.V.N. was supported partly by the DOE grant DE-FG02-13ER42020 and partly by the Alexander S. Onassis Public Benefit Foundation . The work of K.A.O. was supported partly by the DOE grant DE-SC0011842 at the University of Minnesota.

Publisher Copyright:
© 2019 The Author(s)


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