Inflation in supergravity without Kahler potential

Abstract

We propose a new class of inflation models in supergravity with higher derivative terms. In those models, the Kähler potential does not contain the inflaton multiplet, but a supersymmetric derivative term does. In the models, inflation is effectively driven by a single scalar field with a standard kinetic term and a scalar potential. Remarkably, the so-called $\eta$ problem does not exist in our models.

5pages, v2; references added

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Cited by in corpus (14)

• Gravitino Problem in Minimal Supergravity Inflation
• Reconciling Induced-Gravity Inflation in Supergravity With The Planck 2013 & BICEP2 Results
• Gravity Waves From Non-Minimal Quadratic Inflation
• de Sitter vacuum from $R^2$ supergravity
• Impacts of supersymmetric higher derivative terms on inflation models in supergravity
• Topological couplings in higher derivative extensions of supersymmetric three-form gauge theories
• Gravitino Problem in Inflation Driven by Inflaton-Polonyi Kähler Coupling
• Matter coupled Dirac-Born-Infeld action in 4-dimensional N=1 conformal supergravity
• DBI action of real linear superfield in 4D $\mathcal{N}=1$ conformal supergravity
• Ghostbusters in $f(R)$ supergravity
• More on DBI action in 4D $\mathcal{N}=1$ supergravity
• Superspace Higher Derivative Terms in Two Dimensions
• Aether SUSY breaking: Can aether be alternative to F-term SUSY breaking?
• Complex Linear Multiplets and Local Supersymmetry Breaking