Supersymmetry Breaking and Inflation from Higher Curvature Supergravity

Abstract

The generic embedding of the $R+R^2$ higher curvature theory into old-minimal supergravity leads to models with rich vacuum structure in addition to its well-known inflationary properties. When the model enjoys an exact R-symmetry, there is an inflationary phase with a single supersymmetric Minkowski vacuum. This appears to be a special case of a more generic set-up, which in principle may include R-symmetry violating terms which are still of pure supergravity origin. By including the latter terms, we find new supersymmetry breaking vacua compatible with single-field inflationary trajectories. We discuss explicitly two such models and we illustrate how the inflaton is driven towards the supersymmetry breaking vacuum after the inflationary phase. In these models the gravitino mass is of the same order as the inflaton mass. Therefore, pure higher curvature supergravity may not only accommodate the proper inflaton field, but it may also provide the appropriate hidden sector for supersymmetry breaking after inflation has ended.

41 pages, 21 figures, published version

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Cited by in corpus (10)

• Primordial black holes from modified supergravity
• Reheating processes after Starobinsky inflation in old-minimal supergravity
• Higher-Curvature Corrections and Tensor Modes
• Inflation, SUSY breaking, and primordial black holes in modified supergravity coupled to chiral matter
• Primordial black holes from Volkov-Akulov-Starobinsky supergravity
• Inflation in $R^2$ supergravity with non-minimal superpotentials
• SUSY-Breaking Scenarios With a Mildly Violated R Symmetry
• $\alpha$-attractors from supersymmetry breaking
• Gauging the R-symmetry of old-minimal $R+R^2$ supergravity
• Inflation and Supersymmetry Breaking in Higgs-$R^2$ Supergravity