Gauge inflation by kinetic coupled gravity

Abstract

Recently, a new class of inflationary models, so called \emph{gauge-flation} or non-Abelian gauge field inflation has been introduced where the slow-roll inflation is driven by a non-Abelian gauge field $\text{A}$ with the field strength $\text{F}$. This class of models are based on a gauge field theory having ${\text{F}}^2$ and ${\text{F}}^4$ terms with a non-Abelian gauge group minimally coupled to gravity. Here, we present a new class of such inflationary models based on a gauge field theory having only ${\text{F}}^2$ term with non-Abelian gauge fields non-minimally coupled to gravity. The non-minimal coupling is set up by introducing the Einstein tensor besides the metric tensor within the ${\text{F}}^2$ term, which is called kinetic coupled gravity. A perturbation analysis is performed to confront the inflation under consideration with Planck and BICEP2 results.

12 pages

References in corpus (12)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• The Standard Model Higgs boson as the inflaton
• Inflation scenario via the Standard Model Higgs boson and LHC
• Vector Inflation
• Quintessence and phantom cosmology with non-minimal derivative coupling
• Instability of anisotropic cosmological solutions supported by vector fields
• Inflation and late-time cosmic acceleration in non-minimal Maxwell-$F(R)$ gravity and the generation of large-scale magnetic fields
• Inflationary cosmology and the late-time accelerated expansion of the universe in non-minimal Yang-Mills-$F(R)$ gravity and non-minimal vector-$F(R)$ gravity
• Instability of the ACW model, and problems with massive vectors during inflation
• UV-Protected Inflation
• Realistic cosmological scenario with non-minimal kinetic coupling
• On the health of a vector field with (R A^2)/6 coupling to gravity

Cited by in corpus (2)

• Generalized SU(2) Proca Theory
• Non-minimal kinetic coupled gravity: inflation on the Warped DGP brane