Inflation and Dark Energy with a Single Superfield

Abstract

We discuss the possibility to construct supergravity models with a single superfield describing inflation as well as the tiny cosmological constant $V\sim 10^{-120}$. One could expect that the simplest way to do it is to study models with a supersymmetric Minkowski vacuum and then slightly uplift them. However, due to the recently proven no-go theorem, such a tiny uplifting cannot be achieved by a small modification of the parameters of the theory. We illustrate this general result by investigation of models with a single chiral superfield recently proposed by Ketov and Terada. We show that the addition of a small constant or a linear term to the superpotential of a model with a stable supersymmetric Minkowski vacuum converts it to an AdS vacuum, which results in a rapid cosmological collapse. One can avoid this problem and uplift a supersymmetric Minkowski vacuum to a dS vacuum with $V_0\sim 10^{-120}$ without violating the no-go theorem by making these extra terms large enough. However, we show that this leads to a strong supersymmetry breaking in the uplifted vacua.

15 pages, 7 figures. v2: refs added

References in corpus (14)

• New models of chaotic inflation in supergravity
• Cosmology with Nilpotent Superfields
• General inflaton potentials in supergravity
• The Minimal Volkov - Akulov - Starobinsky Supergravity
• Locally stable non-supersymmetric Minkowski vacua in supergravity
• Emergence of Spontaneously Broken Supersymmetry on an Anti-D3-Brane in KKLT dS Vacua
• On sgoldstino-less supergravity models of inflation
• Inflation and Uplifting with Nilpotent Superfields
• Cosmological Attractor Models and Higher Curvature Supergravity
• Analytic Classes of Metastable de Sitter Vacua
• Does the first chaotic inflation model in supergravity provide the best fit to the Planck data?
• Inflation in Supergravity with a Single Chiral Superfield
• Is Imaginary Starobinsky Model Real?
• Generic Scalar Potentials for Inflation in Supergravity with a Single Chiral Superfield

Cited by in corpus (8)

• Single-field $\alpha$-attractors
• Inflation, de Sitter Landscape and Super-Higgs effect
• Phenomenology and Cosmology of No-Scale Attractor Models of Inflation
• Minimal Supergravity Inflation without Slow Gravitino
• Inflection point inflation and dark energy in supergravity
• Moduli Backreaction on Inflationary Attractors
• $F$-term Multi-Field Inflation in Supergravity without Stabiliser Superfields
• Accelerating Universe in Terms of Hankel Function Index