Anisotropic Inflation from Charged Scalar Fields
arXiv:1010.5495 · doi:10.1088/1475-7516/2011/02/005
Abstract
We consider models of inflation with U(1) gauge fields and charged scalar fields including symmetry breaking potential, chaotic inflation and hybrid inflation. We show that there exist attractor solutions where the anisotropies produced during inflation becomes comparable to the slow-roll parameters. In the models where the inflaton field is a charged scalar field the gauge field becomes highly oscillatory at the end of inflation ending inflation quickly. Furthermore, in charged hybrid inflation the onset of waterfall phase transition at the end of inflation is affected significantly by the evolution of the background gauge field. Rapid oscillations of the gauge field and its coupling to inflaton can have interesting effects on preheating and non-Gaussianities.
minor changes, references added, figures are modified, conforms JCAP published version
References in corpus (20)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Inflationary Universe with Anisotropic Hair
- Vector Inflation
- Generation of Large-Scale Magnetic Fields in Single-Field Inflation
- Hemispherical power asymmetry in the three-year Wilkinson Microwave Anisotropy Probe sky maps
- The Uncorrelated Universe: Statistical Anisotropy and the Vanishing Angular Correlation Function in WMAP Years 1-3
- Instability of anisotropic cosmological solutions supported by vector fields
- Theory of cosmological perturbations in an anisotropic universe
- The Nature of Primordial Fluctuations from Anisotropic Inflation
- Predictions from an anisotropic inflationary era
- Gravitational Waves from Abelian Gauge Fields and Cosmic Strings at Preheating
- Anisotropic Power-law Inflation
- Instability of the ACW model, and problems with massive vectors during inflation
- Anisotropic Inflation from Vector Impurity
- The Axis of Evil revisited
- CMB Temperature Anisotropy from Broken Spatial Isotropy due to an Homogeneous Cosmological Magnetic Field
- A Model of Universe Anisotropization
- Testing Global Isotropy of Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Data: Temperature Analysis
- Particle Production of Vector Fields: Scale Invariance is Attractive
- Gauge field back-reaction in Born Infeld cosmologies