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arXiv · hep-ph/9902477

A Next-to-Minimal model of Hybrid Inflation in Effective Supergravity Theories

M. Bastero-Gil·S. F. King
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Abstract

We propose a model of inflation based on a simple variant of the NMSSM, called $ϕ$NMSSM where the additional singlet $ϕ$ plays the role of the inflaton in hybrid (or inverted hybrid) type models. The $ϕ$NMSSM solves the $μ$ problem of the MSSM via the vacuum expectation value of the gauge singlet N, but also solves the strong CP problem through an approximate Peccei-Quinn symmetry. The potential energy which drives inflation originates from the F-term of the effective supergravity theory which result from a generic string theory. In the class of models considered the inflaton is protected from receiving mass during inflation by a Heisenberg symmetry, avoiding the $η$ problem.

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M. Bastero-Gil, S. F. King. 1999-02-26. A Next-to-Minimal model of Hybrid Inflation in Effective Supergravity Theories. https://doi.org/10.1063/1.59424

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