de Sitter vacuum from $R^2$ supergravity

Abstract

We propose a supergravity model with a constrained curvature multiplet, which realizes the Starobinsky inflation and the de Sitter vacuum in the present universe simultaneously. Surprisingly, at the vacuum, the soft supersymmetry breaking scale for minimal supersymmetric standard model sector becomes the TeV scale, however, the gravitino mass scale becomes much higher than that of soft supersymmetry breaking. Such a hierarchical structure, which naturally avoids the gravitino problem, appears without introducing a new scale other than inflation scale.

5pages, v2: typos corrected, title changed, version published in PRD

References in corpus (18)

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• Cosmology with Nilpotent Superfields
• The Minimal Volkov - Akulov - Starobinsky Supergravity
• Pure de Sitter Supergravity
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• Inflation, de Sitter Landscape and Super-Higgs effect
• De Sitter Supergravity Model Building
• The coupling of Non-linear Supersymmetry to Supergravity
• Reheating processes after Starobinsky inflation in old-minimal supergravity
• Matter-coupled de Sitter Supergravity
• Scale invariant Volkov-Akulov Supergravity
• Properties of Nilpotent Supergravity
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• Inflation in supergravity without Kahler potential

Cited by in corpus (12)

• On the origin of constrained superfields
• Constrained superfields in Supergravity
• Inflation from Nilpotent Kähler Corrections
• Minimal scalar-less matter-coupled supergravity
• The general de Sitter supergravity component action
• Cosmology and Supergravity
• Non-linear Realizations and Higher Curvature Supergravity
• Construction of the de Sitter supergravity
• Volkov-Akulov-Starobinsky supergravity revisited
• Two-Field Born-Infeld with Diverse Dualities
• $\alpha$-attractors from supersymmetry breaking
• $R^2$ Dark Energy in the Laboratory