Vector Inflation

Details Vector Inflation Vector Inflation

2008-02-14

arxiv.org/abs/0802.2068v3

JCAP 0806:009,2008

Astronomy and Astrophysics

Astrophysics

6 pages; minor changes

Scientific paper

10.1088/1475-7516/2008/06/009

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.

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