Inflection-Point Sgoldstino Inflation in no-Scale Supergravity

Abstract

We propose a modification of no-scale supergravity models which incorporates sgoldstino stabilization and supersymmetry (SUSY) breaking with a tunable cosmological constant by introducing a Kahler potential which yields a kinetic pole of order one. The resulting scalar potential may develop an inflection point, close to which an inflationary period can be realized for subplanckian field values consistently with the observational data. For central value of the spectral index ns, the necessary tuning is of the order of 10^-6, the tensor-to-scalar ratio is tiny whereas the running of ns is around -3x10^-3. Our proposal is compatible with high-scale SUSY and the results of LHC on the Higgs boson mass.

Published Version

References in corpus (7)

• Gauge invariant MSSM inflaton
• Ultra slow-roll inflation demystified
• Planck, LHC, and $\alpha$-attractors
• BICEP/Keck Constraints on Attractor Models of Inflation and Reheating
• Inflation from Supersymmetry Breaking
• Unified Model of Chaotic Inflation and Dynamical Supersymmetry Breaking
• An Alternative Framework for E-Model Inflation in Supergravity

Cited by in corpus (3)

• PeV-Scale SUSY and Cosmic Strings from F-term Hybrid Inflation
• Dilaton-axion modular inflation in supergravity
• Hybrid inflation from supersymmetry breaking