Vector Inflation

Abstract

We propose a scenario where inflation is driven by non-minimally coupled massive vector fields. In an isotropic homogeneous universe these fields behave in presicely the same way as a massive minimally coupled scalar field. Therefore our model is very similar to the model of chaotic inflation with scalar field. For vector fields the isotropy of expansion is achived either by considering a triplet of orthogonal vector fields or for the expense of $N$ randomly oriented vector fields. In the last case the substantial anisotropy of the expansion of order $1/\sqrt{N}$ survives until the end of inflation. The lightest vector fields might also force the late time acceleration of the Universe.

6 pages; minor changes

References in corpus (1)

• Dark energy as a massive vector field

Cited by in corpus (11)

• Inflationary Universe with Anisotropic Hair
• Instability of anisotropic cosmological solutions supported by vector fields
• Cosmology without inflation
• Inflation from N-Forms and its stability
• Dark spinor inflation -- theory primer and dynamics
• Anisotropic non-Gaussianity from vector field perturbations
• Cosmological perturbations from vector inflation
• Cosmological evolution in vector-tensor theories of gravity
• Non-minimally coupled vector curvaton
• Gravitational waves in vector inflation
• The Slow-Roll and Rapid-Roll Conditions in the Space-like Vector Field Scenario