Large-Field Inflation and Supersymmetry Breaking

Abstract

Large-field inflation is an interesting and predictive scenario. Its non-trivial embedding in supergravity was intensively studied in the recent literature, whereas its interplay with supersymmetry breaking has been less thoroughly investigated. We consider the minimal viable model of chaotic inflation in supergravity containing a stabilizer field, and add a Polonyi field. Furthermore, we study two possible extensions of the minimal setup. We show that there are various constraints: first of all, it is very hard to couple an O'Raifeartaigh sector with the inflaton sector, the simplest viable option being to couple them only through gravity. Second, even in the simplest model the gravitino mass is bounded from above parametrically by the inflaton mass. Therefore, high-scale supersymmetry breaking is hard to implement in a chaotic inflation setup. As a separate comment we analyze the simplest chaotic inflation construction without a stabilizer field, together with a supersymmetrically stabilized Kahler modulus. Without a modulus, the potential of such a model is unbounded from below. We show that a heavy modulus cannot solve this problem.

19 pages, 3 figures, comments and references added

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Cited by in corpus (11)

• On sgoldstino-less supergravity models of inflation
• Inflation and High-Scale Supersymmetry with an EeV Gravitino
• Challenges for Large-Field Inflation and Moduli Stabilization
• The Goldstino Brane, the Constrained Superfields and Matter in N=1 Supergravity
• Two-Field Analysis of No-Scale Supergravity Inflation
• Generic Scalar Potentials for Inflation in Supergravity with a Single Chiral Superfield
• Three-form multiplet and Inflation
• Starobinsky-Like Inflation and Neutrino Masses in a No-Scale SO(10) Model
• Inflation and Leptogenesis in High-Scale Supersymmetry
• Challenges for D-brane large-field inflation with stabilizer fields
• Illustrating SUSY breaking effects on various inflation mechanisms