Density Perturbations in the Universe from Massive Vector Fields
Sep, 20074 pages
Part of Proceedings on 13th International Symposium on Particles, strings, and cosmology (PASCOS 2007) : London, UK, July 2-7, 2007, 387-390
Published in:
- AIP Conf.Proc. 957 (2007) 1, 387-390
Contribution to:
- , 387-390
- PASCOS 2007
- Published: Nov 26, 2007
e-Print:
- 0709.1109 [hep-th]
DOI:
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Abstract: (AIP)
I discuss the possibility of using a massive vector field to generate the density perturbation in the Universe. I find that a scale‐invariant superhorizon spectrum of vector field perturbations is possible to generate during inflation. The associated curvature perturbation is imprinted onto the Universe following the curvaton scenario. The mechanism does not generate a long‐range anisotropy because an oscillating massive vector field behaves as a pressureless isotropic fluid.- 95.36.+x
- 11.25.Db
- 98.80.Cq
- 11.30.Pb
- cosmology
- string theory
- supersymmetry
- dark matter
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