Superconformal D-Term Inflation

Abstract

We study models of hybrid inflation in the framework of supergravity with superconformal matter. F-term hybrid inflation is not viable since the inflaton acquires a large tachyonic mass. On the contrary, D-term hybrid inflation can successfully account for the amplitude of the primordial power spectrum. It is a two-field inflation model which, depending on parameters, yields values of the scalar spectral index down to n_s ~ 0.96. Generically, there is a tension between a small spectral index and the cosmic string bound albeit, within 2-sigma uncertainty, the current observational bounds can be simultaneously fulfilled.

27 pages, 7 figures; v2: discussion in section 2 slightly extended, minor corrections, typos removed, matches published JCAP version

References in corpus (14)

• The Standard Model Higgs boson as the inflaton
• Superconformal Symmetry, NMSSM, and Inflation
• CMB power spectrum contribution from cosmic strings using field-evolution simulations of the Abelian Higgs model
• Constraints on Supersymmetric Models of Hybrid Inflation
• Comments on the Fayet-Iliopoulos Term in Field Theory and Supergravity
• Spontaneous B-L Breaking as the Origin of the Hot Early Universe
• Quantization of Fayet-Iliopoulos Parameters in Supergravity
• WIMP Dark Matter from Gravitino Decays and Leptogenesis
• GUT Scalar Potentials for Higgs Inflation
• Local SU(5) Unification from the Heterotic String
• D-term inflation in non-minimal supergravity
• Fluxbranes: Moduli Stabilisation and Inflation
• Moduli stabilization and SUSY breaking in heterotic orbifold string models
• On Supercurrent Superfields and Fayet-Iliopoulos Terms in N=1 Gauge Theories

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• Complexified Starobinsky Inflation in Supergravity in the Light of Recent BICEP2 Result
• Reheating processes after Starobinsky inflation in old-minimal supergravity
• Conformal inflation in the metric-affine geometry
• Minimal $k$-inflation in light of the conformal metric-affine geometry
• Unified Model of D-Term Inflation
• No-scale D-term inflation with stabilized moduli
• Inflation with Fayet-Iliopoulos Terms
• Inflation from High-Scale Supersymmetry Breaking
• Non-canonical inflation coupled to matter
• Grand Unification and Subcritical Hybrid Inflation
• Dynamical D-Terms in Supergravity
• Chaotic inflation in supergravity and cosmic string production
• Leptogenesis after superconformal subcritical hybrid inflation
• Pole inflation in Jordan frame supergravity
• Affleck-Dine baryogenesis after D-term inflation and solutions to the baryon-DM coincidence problem
• Supergravity Contributions to Inflation in models with non-minimal coupling to gravity
• Subcritical hybrid inflation in a generalized superconformal model
• Modulus D-term Inflation