Abstract
It is well known that large Hubble-induced supergravity corrections to the inflaton field can ruin the flatness of the potential, thus creating a tension between slow-roll inflation and supergravity. In this paper we show that it is possible to obtain a cosmologically flat direction, embedded within the minimal supersymmetric standard model, despite very large super-Hubble corrections. As an illustration, we show that a flat direction which is lifted by an $n=6$ operator matches the current cosmic microwave background data for a wide range of the Hubble parameter, ${10}^{5}\text{ }\text{ }\mathrm{GeV}\ensuremath{\lesssim}{H}_{inf}\ensuremath{\lesssim}{10}^{8.5}\text{ }\text{ }\mathrm{GeV}$. Our approach can be applied to any $F$-term inflationary model.
Accepted Version (
Free)
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call