Does the first chaotic inflation model in supergravity provide the best fit to the Planck data?

Abstract

I describe the first model of chaotic inflation in supergravity, which was proposed by Goncharov and the present author in 1983. The inflaton potential of this model has a plateau-type behavior $V_0(1-\frac{8}{3}{e}^{-\sqrt{6}|\varphi |})$ at large values of the inflaton field. This model predicts $n_s=1-\frac{2}{N}\approx 0.967$ and $r=\frac{4}{3N^2}\approx 4\times 10^{-4}$, in good agreement with the Planck data. I propose a slight generalization of this model, which allows to describe not only inflation but also dark energy and supersymmetry breaking.

9 pages, 3 figures, references added

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• Towards Axionic Starobinsky-like Inflation in String Theory
• Inflation from Nilpotent Kähler Corrections
• BICEP/Keck and Cosmological Attractors
• Polynomial $\alpha$-attractors
• Random Potentials and Cosmological Attractors
• Nonthermal Gravitino Production after Large Field Inflation
• Gravitational waves and large field inflation
• On inflation, cosmological constant, and SUSY breaking
• $\alpha$-attractor inflation: Models and predictions
• Minimal Supergravity Inflation without Slow Gravitino
• Inflation and Dark Energy with a Single Superfield
• General sGoldstino Inflation
• Enhanced primordial gravitational waves from a stiff post-inflationary era due to an oscillating inflaton
• Chasing cosmic inflation: constraints for inflationary models and reheating insights
• Non-oscillating Early Dark Energy and Quintessence from Alpha-Attractors
• Constrained Superfields in Dynamical Background
• Initial conditions of pre-inflation with Hilltop potential in loop quantum cosmology
• An alternative attractor in gauged NJL inflation
• Dark energy with oscillatory tracking potential: Observational Constraints and Perturbative effects
• Complementary signatures of $\alpha -$attractor inflation in CMB and cosmic string Gravitational Waves