Kinetically Modified Non-Minimal Chaotic Inflation

Abstract

We consider Supersymmetric (SUSY) and non-SUSY models of chaotic inflation based on the phi^n potential with 2<=n<=6. We show that the coexistence of a nonminimal coupling to gravity, fR=1+cR phi^(n/2), with a kinetic mixing of the form fK=cK fR^m can accommodate values of the spectral index, ns, and the tensor-to-scalar ratio, r, favored by the Bicep2/Keck Array and Planck results for 0<=m<=4 and 2.5x10^(-4)<=rRK=cR/cK^{n/4}<=1, where the upper limit is not imposed for n=2. Inflation can be attained for subplanckian inflaton values with the corresponding effective theories retaining the perturbative unitarity up to the Planck scale.

Final version with some typos corrected

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• Starobinsky Inflation: From Non-SUSY To SUGRA Realizations
• Kinetically Modified Non-Minimal Higgs Inflation in Supergravity
• Induced-Gravity GUT-Scale Higgs Inflation in Supergravity
• Gravitational Waves, mu Term & Leptogenesis from B-L Higgs Inflation in Supergravity
• Variants of Kinetically Modified Non-Minimal Higgs Inflation in Supergravity
• Unitarity-Safe Models of Non-Minimal Inflation in Supergravity
• Reheating constraints on modified quadratic chaotic inflation
• Unitarizing non-Minimal Inflation via a Linear Contribution to the Frame Function
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• Induced-Gravity Palatini-Like Higgs Inflation in Supergravity Confronts ACT DR6
• Quadratic chaotic inflation with a logarithmic-corrected mass
• Kinetically Modified Non-Minimal Inflation With Exponential Frame Function
• Starobinsky Inflation with T-Model Kaehler Geometries
• Observable Gravitational Waves From Kinetically Modified Non-Minimal Inflation
• Testing an Inflation Model with Nonminimal Derivative Coupling in the Light of PLANCK 2015 Data