Supergravity inspired Vector Curvaton

Abstract

It is investigated whether a massive Abelian vector field, whose gauge kinetic function is growing during inflation, can be responsible for the generation of the curvature perturbation in the Universe. Particle production is studied and it is shown that the vector field can obtain a scale invariant superhorizon spectrum of perturbations with a reasonable choice of kinetic function. After inflation the vector field begins coherent oscillations, during which it corresponds to pressureless isotropic matter. When the vector field dominates the Universe its perturbations give rise to the observed curvature perturbation following the curvaton scenario. It is found that this is possible if, after the end of inflation, the mass of the vector field increases at a phase transition at temperature of order 1 TeV or lower. Inhomogeneous reheating, whereby the vector field modulates the decay rate of the inflaton, is also studied.

16 pages, 1 figure, RevTeX

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Cited by in corpus (33)

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• P-nflation: generating cosmic Inflation with p-forms
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• Anisotropic non-Gaussianity from vector field perturbations
• Vector Coherent Oscillation Dark Matter
• Particle Production of Vector Fields: Scale Invariance is Attractive
• Non-minimally coupled vector curvaton
• Non-gaussianity from the trispectrum and vector field perturbations
• Non-gaussianity at tree and one-loop levels from vector field perturbations
• Parity Violating Statistical Anisotropy
• Anisotropic bispectrum of curvature perturbations from primordial non-Abelian vector fields
• Constraint on Vector Coherent Oscillation Dark Matter with Kinetic Function
• Statistical Anisotropy and the Vector Curvaton Paradigm
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• Statistical Anisotropy from Vector Curvaton in D-brane Inflation
• Curvature Perturbations from a Massive Vector Curvaton
• Viable Vector Coherent Oscillation Dark Matter
• The Primordial Curvature Perturbation from Vector Fields of General non-Abelian Groups
• Feynman-like Rules for Calculating n-Point Correlators of the Primordial Curvature Perturbation
• Scalar perturbations in p-nflation: the 3-form case
• Dynamical Analysis of Anisotropic Inflation
• Eliminating the eta-problem in SUGRA Hybrid Inflation with Vector Backreaction
• The inflationary origin of the Cold Spot anomaly
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• Non-gaussianity and Statistical Anisotropy in Cosmological Inflationary Models
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• The quantum origin of cosmic structure: theory and observations
• Spectator fields and their imprints on the Cosmic Microwave Background
• Hidden in the background: a local approach to CMB anomalies