Affleck-Dine Leptogenesis from Higgs Inflation

26 Aug 2021, 17:20
20m
ZR5

ZR5

Early Universe Cosmology Early Universe Cosmology

Speaker

Chengcheng Han (SYSU)

Description

We investigate the possibility of simultaneously explaining inflation, the neutrino masses and the baryon asymmetry through extending the Standard Model by a triplet Higgs. The neutrino masses are generated by the vacuum expectation value of the triplet Higgs, while a combination of the triplet and doublet Higgs' plays the role of the inflaton. Additionally, the dynamics of the triplet, and its inherent lepton number violating interactions, lead to the generation of a lepton asymmetry during inflation. The resultant baryon asymmetry, inflationary predictions and neutrino masses are consistent with current observational and experimental results.

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