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Minimal Leptogenesis in Brane-inspired Cosmology

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arxiv 2211.11361 v1 pith:OWMIWDX3 submitted 2022-11-21 hep-ph

Alessandro Di Marco , Amit Dutta Banik , Anish Ghoshal , Gianfranco Pradisi This is my paper · ORCID
classification hep-ph
keywords leptogenesisbrane-inspiredcosmologyminimalscalarstandardaffectedaffecting
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We discuss how a post inflationary reheating phase characterized by a nonstandard multiple scalar field cosmology can change the thermal history of the universe, affecting minimal high scale leptogenesis. In particular, we explore a class of models where a set of scalar fields in a brane-inspired dynamical scenario modifies the Boltzmann equations concerning standard leptogenesis. The produced lepton asymmetry, due to the decays of heavy Majorana right-handed neutrinos responsible for generating Standard Model neutrino masses via the type-I seesaw, is affected as well.

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  1. Leptogenesis in Brane-modified cosmology: Signatures in primordial gravitational waves

    hep-ph 2026-08 conditional novelty 4.0 of 10

    With one or two stiff kination epochs before radiation domination, vanilla leptogenesis can produce the observed baryon asymmetry while imprinting a blue-tilted gravitational-wave spectrum, leaving a small DECIGO-visi...

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