The MSSM inflation and cosmological attractors

Abstract

Inflationary scenarios motivated by the Minimal Supersymmetric Standard Model (MSSM) where five scalar fields are non-minimally coupled to gravity are considered. The potential of the model and the function of non-minimal coupling are polynomials of two Higgs doublet convolutions. We show that the use of the strong coupling approximation allows to obtain inflationary parameters in the case when a combination of the four scalar fields plays a role of inflaton. Numerical calculations show that the cosmological evolution leads to inflationary scenarios fully compatible with observational data for different values of the MSSM mixing angle $\beta$.

Comments: 15 pages, 1 figure, v2: minor corrections, discussion improved, references added, accepted for publication in the IJGMMP. arXiv admin note: text overlap with arXiv:1705.09624