Hybrid Inflation and the Moduli Problem

Abstract

We revisit some questions in supersymmetric hybrid inflation (SHI). We analyze the amount of fine tuning required in various models, the problem of decay at the end of inflation and the generation of baryons after inflation. We find that the most natural setting for HI is in supersymmetric models with non-renormalizable couplings. Furthermore, we argue that almost inevitably, one of the fields involved is a modulus, with Planck scale variation. The resulting moduli problem can be solved in two ways: either by a massive modulus (which requires some fine tuning), or an enhanced symmetry point, in which the moduli becomes strongly coupled to the Standard Model. Various possibilities for baryon production are discussed.

19 pages

References in corpus (3)

• Electroweak Baryogenesis and Dark Matter in the nMSSM
• Low Energy Supersymmetry From the Landscape
• TeV scale resonant leptogenesis from supersymmetry breaking

Cited by in corpus (9)

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• Inflation models after WMAP year three
• Particle physics models of inflation
• Non-Gaussianities and Curvature Perturbations from Hybrid Inflation
• Slow Roll during the Waterfall Regime: The Small Coupling Window for SUSY Hybrid Inflation
• Constraining Modular Inflation in the MSSM from Giant Q-Ball Formation
• High Density Preheating Effects on Q-ball Decays and MSSM Inflation
• Alchemical Inflation: inflaton turns into Higgs
• Updated Constraints on Large Field Hybrid Inflation