Leptogenesis via Inflaton Mass Terms in Non-Minimally Coupled Inflation

Autor:	Lloyd-Stubbs, Kit, McDonald, John
Rok vydání:	2022
Předmět:	High Energy Physics - Phenomenology Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.107.103511
Popis:	We consider a model of baryogenesis based on adding lepton number-violating quadratic mass terms to the inflaton potential of a non-minimally coupled inflation model. The $L$-violating mass terms generate a lepton asymmetry in a complex inflaton field via the mass term Affleck-Dine mechanism, which is transferred to the Standard Model (SM) sector when the inflaton decays to right-handed (RH) neutrinos. The model is minimal in that it requires only the SM sector, RH neutrinos, and a non-minimally coupled inflaton sector. We find that baryon isocurvature fluctuations can be observable in metric inflation but are negligible in Palatini inflation. The model is compatible with reheating temperatures that may be detectable in the observable primordial gravitational waves predicted by metric inflation. Comment: 18 pages, 6 figures. Published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2212.09454 Zobrazit plný text záznamu View this record from Arxiv