On the coupling of vector fields to the Gauss-Bonnet invariant
arXiv:1504.07983 · doi:10.18257/raccefyn.1146
Abstract
Inflationary models including vector fields have attracted a great deal of attention over the past decade. Such an interest owes to the fact that they might contribute to, or even be fully responsible for, the curvature perturbation imprinted in the cosmic microwave background. However, the necessary breaking of the vector field's conformal invariance during inflation is not without problems. In recent years, it has been realized that a number of instabilities endangering the consistency of the theory arise when the conformal invariance is broken by means of a non-minimal coupling to gravity. In this paper, we consider a massive vector field non-minimally coupled to gravity through the Gauss-Bonnet invariant, and investigate whether the vector can play the role of a curvaton while evading the emergence of instabilities and preserves the large-scale isotropy.
Typos corrected, some clarifying comments added. Matches the published version
References in corpus (25)
- Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
- Planck 2018 results. VII. Isotropy and Statistics of the CMB
- Planck 2015 results. XVI. Isotropy and statistics of the CMB
- CMB Anomalies after Planck
- Vector Inflation
- Instability of anisotropic cosmological solutions supported by vector fields
- Cosmology in generalized Proca theories
- Can a vector field be responsible for the curvature perturbation in the Universe?
- Gauss-Bonnet Inflation
- Instability of the ACW model, and problems with massive vectors during inflation
- Power spectra from an inflaton coupled to the Gauss-Bonnet term
- Observational constraints on slow-roll inflation coupled to a Gauss-Bonnet term
- Inflation with Gauss-Bonnet coupling
- Cosmological perturbations from vector inflation
- Particle Production of Vector Fields: Scale Invariance is Attractive
- Non-minimally coupled vector curvaton
- Reheating in Gauss-Bonnet-coupled inflation
- Reconstruction of the Scalar Field Potential in Inflationary Models with a Gauss-Bonnet term
- Higgs Inflation with a Gauss-Bonnet term in the Jordan Frame
- Non-minimal Maxwell-Modified Gauss-Bonnet Cosmologies: Inflation and Dark Energy
- Cosmology in scalar-vector-tensor theories
- A Study of an Einstein Gauss-Bonnet Quintessential Inflationary Model
- Low Scale Higgs Inflation with Gauss-Bonnet Coupling
- Slow-roll inflation from massive vector fields non-minimally coupled to gravity
- Higgs Inflation with linear and quadratic curvature corrections