T-Model Higgs Inflation in Supergravity
Abstract
We focus on a simple, natural and predictive T model of inflation in Supergravity employing as inflaton the Higgs field which leads to the spontaneous breaking of a U(1)_(B-L) symmetry at the SUSY GUT scale. We use a renormalizable superpotential, fixed by a U(1) R symmetry, and a Kahler potential which parameterizes the Kahler manifold SU(2,1)/(SU(2)xU(1))x(SU(2)/U(1)) with scalar curvature R_K=-6/N+2/N_0 where 0<N_0<6. The spectral index ns turns out to be close to its present central observational value and the tensor-to-scalar ratio r increases with N<36. The model can be nicely linked to MSSM offering an explanation of the magnitude of the mu parameter consistently with phenomenological data. It also allows for baryogenesis via non-thermal leptogenesis with gravitino as light as 1 TeV.
Cite
@article{arxiv.2307.14652,
title = {T-Model Higgs Inflation in Supergravity},
author = {C. Pallis},
journal= {arXiv preprint arXiv:2307.14652},
year = {2023}
}
Comments
Prepared for the Proceedings of HEP 2023, Ioannina, Greece -- Conference C23-04-05. arXiv admin note: text overlap with arXiv:2305.00523