Statistical Anisotropy and the Vector Curvaton Paradigm

Abstract

The vector curvaton paradigm is reviewed. The mechanism allows a massive vector boson field to contribute to or even generate the curvature perturbation in the Universe. Contribution of vector bosons is likely to generate statistical anisotropy in the spectrum and bispectrum of the curvature perturbation, which will soon be probed observationally. Two specific models for the generation of superhorizon spectra for the components of an Abelian vector field are analysed. Emphasis is put on the observational signatures of the models when the vector fields play the role of vector curvatons. If future observations support the vector curvaton mechanism this will open a window into the gauge field content of theories beyond the standard model.

LaTex, 26 pages, 1 figure, published version

References in corpus (19)

• Inflationary Universe with Anisotropic Hair
• Instability of anisotropic cosmological solutions supported by vector fields
• Non-Abelian Gauge Field Inflation
• The Nature of Primordial Fluctuations from Anisotropic Inflation
• Cosmic Microwave Background Statistics for a Direction-Dependent Primordial Power Spectrum
• Scalar-Scalar, Scalar-Tensor, and Tensor-Tensor Correlators from Anisotropic Inflation
• Can a vector field be responsible for the curvature perturbation in the Universe?
• Instability of the ACW model, and problems with massive vectors during inflation
• The Axis of Evil revisited
• CMB multipole measurements in the presence of foregrounds
• Asymmetric Beams and CMB Statistical Anisotropy
• Imprints of anisotropic inflation on the cosmic microwave background
• Anisotropic non-Gaussianity from vector field perturbations
• Instabilities in the Aether
• Cosmological perturbations from vector inflation
• Particle Production of Vector Fields: Scale Invariance is Attractive
• Supergravity inspired Vector Curvaton
• Anisotropic Power Law Inflation from Rolling Tachyons
• Violation of the Rotational Invariance in the CMB Bispectrum

Cited by in corpus (30)

• The anisotropic power spectrum and bispectrum in the f(phi) F^2 mechanism
• Stability analysis of chromo-natural inflation and possible evasion of Lyth's bound
• Anisotropic Non-Gaussianity from a Two-Form Field
• Anisotropic power-law k-inflation
• Gauge-flation confronted with Planck
• Observational signatures of anisotropic inflationary models
• Coupled three-form dark energy
• Constraining anisotropic models of the early Universe with WMAP9 data
• Stable solutions of inflation driven by vector fields
• Parity Violating Statistical Anisotropy
• Does Anisotropic "Inflation" Produce a Small Statistical Anisotropy?
• On the stability and causality of scalar-vector theories
• The charged inflaton and its gauge fields: preheating and initial conditions for reheating
• Non-Abelian $S$-term dark energy and inflation
• Scalar and vector Galileons
• Search for anomalous alignments of structures in Planck data using Minkowski Tensors
• Generalized SU(2) Proca theory reconstructed and beyond
• Statistical Anisotropy from Vector Curvaton in D-brane Inflation
• The different varieties of the Suyama-Yamaguchi consistency relation and its violation as a signal of statistical inhomogeneity
• Massive vector field on curved background: non-minimal coupling, quantization and divergences
• Anisotropic Inflation with Derivative Couplings
• The Suyama-Yamaguchi consistency relation in the presence of vector fields
• General quadrupolar statistical anisotropy: Planck limits
• Conformally and Disformally Coupled Vector field Models of Dark Energy
• Unveiling the inconsistency of the Proca theory with non-minimal coupling to gravity
• Scale and shape dependent non-Gaussianity in the presence of inflationary vector fields
• Inflationary buildup of a vector field condensate and its cosmological consequences
• Stability Conditions for the Horndeski Scalar Field Gravity Model
• Thermal Inflation with a Thermal Waterfall Scalar Field Coupled to a Light Spectator Scalar Field
• Hidden in the background: a local approach to CMB anomalies