No-scale D-term inflation with stabilized moduli

Abstract

We study the consistency of hybrid inflation and moduli stabilization, using the Kallosh--Linde model as an example for the latter. We find that F-term hybrid inflation is not viable since inflationary trajectories are destabilized by tachyonic modes. On the other hand, D-term hybrid inflation is naturally compatible with moduli stabilization due to the absence of a large superpotential term during the inflationary phase. Our model turns out to be equivalent to superconformal D-term inflation and it therefore successfully accounts for the CMB data in the large-field regime. Supersymmetry breaking can be incorporated via an O'Raifeartaigh model. For GUT-scale inflation one obtains stringent bounds on the gravitino mass. A rough estimate yields 10^5 GeV \lesssim m_3/2 \lesssim 10^10 GeV, contrary to naive expectation.

16 pages; v2: Minor corrections, discussion of gravitino mass bounds expanded. Version to appear in Physics Letters B

References in corpus (6)

• Superconformal Symmetry, NMSSM, and Inflation
• O'KKLT
• The Starobinsky Model from Superconformal D-Term Inflation
• SUGRA chaotic inflation and moduli stabilisation
• Fluxbranes: Moduli Stabilisation and Inflation
• Coupling Hybrid Inflation to Moduli

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• Unified No-Scale Attractors
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• Starobinsky-Like Inflation and Neutrino Masses in a No-Scale SO(10) Model
• Inflation with Fayet-Iliopoulos Terms
• Inflation and Leptogenesis in High-Scale Supersymmetry
• Inflation from High-Scale Supersymmetry Breaking
• From $R^2$ Gravity to No-Scale Supergravity
• Phenomenology and Cosmology of No-Scale Attractor Models of Inflation
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• Grand Unification and Subcritical Hybrid Inflation
• Enhancement of strange baryons in high-multiplicity proton-proton and proton-nucleus collisions
• Non-Oscillatory No-Scale Inflation
• From Minkowski to de Sitter in Multifield No-Scale Models
• No-scale hybrid inflation with R-symmetry breaking
• Affleck-Dine baryogenesis after D-term inflation and solutions to the baryon-DM coincidence problem