Vector inflation

Journal Article · Sun Jun 15 04:00:00 EDT 2008 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2008/06/009· OSTI ID:22156646

Golovnev, Alexey; Mukhanov, Viatcheslav; Vanchurin, Vitaly ^[1]

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1. ASC, Department fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, Theresienstrasse 37, D-80333, Munich (Germany)

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

• OSTI ID: 22156646
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 06 Vol. 2008; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ACCELERATION
ANISOTROPY
EXPANSION
INFLATIONARY UNIVERSE
ISOTROPY
SCALAR FIELDS
UNIVERSE
VECTOR FIELDS