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Open AccessArticle

Consequences of f(?) Cosmology in Thermal Leptogenesis and Gravitino Late Abundance

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Dipartimento di Fisica “E.R. Caianiello” Universitá di Salerno, and INFN–Gruppo Collegato di Salerno, SA 84084 Fisciano, Italy
2
Division of Theoretical Physics, Ruder Bošković Institute, Bijenčka cesta 54, 10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Symmetry 2020, 12(2), 300; https://doi.org/10.3390/sym12020300
Received: 31 January 2020 / Revised: 9 February 2020 / Accepted: 11 February 2020 / Published: 19 February 2020
(This article belongs to the Special Issue Geometry, Symmetry and Quantum Field Theory)
Thermal Leptogenesis and the gravitino problem are reviewed in the framework of non-standard cosmologies. We consider in particular the f ( T ) cosmology, where T is the torsion field. We constrain the parameters space of these cosmological models consistently with thermal Leptogenesis scenario (with degenerate mass spectrum of light neutrinos), and we show that they allow to solve the gravitino problem as well. Owing to the similar characteristics to f ( T ) cosmology, we shortly discuss also the case of the shear dominated Universe. View Full-Text
Keywords: Early Universe; Modified Cosmology; Leptogenesis Early Universe; Modified Cosmology; Leptogenesis
MDPI and ACS Style

Capolupo, A.; Giampaolo, S.M.; Lambiase, G.; Quaranta, A. Consequences of f(?) Cosmology in Thermal Leptogenesis and Gravitino Late Abundance. Symmetry 2020, 12, 300.

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