Plateau Inflation in $R$-parity Violating MSSM

Understand

Inflation with plateau potentials give the best fit to the CMB observables as they predict tensor to scalar ratio stringently bounded by the observations from Planck and BICEP2/Keck.

• In supergravity models it is possible to obtain plateau potentials for scalar fields in the Einstein frame which can serve as the inflation potential by considering higher dimensional Planck suppressed operators and by the choice of non-canonical K\"ahler potentials.
• We construct a plateau inflation model in MSSM where the inflation occurs along a sneutrino-Higgs flat direction.
• A hidden sector Polonyi field is used for the breaking of supersymmetry after the end of the inflation.