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Density Perturbations in the Universe from Massive Vector Fields.

Dimopoulos, Konstantinos (2007) Density Perturbations in the Universe from Massive Vector Fields. American Institute of Physics Conference Proceedings, 957 (1). pp. 387-390. ISSN 1551-7616

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Abstract

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.

Item Type: Article
Journal or Publication Title: American Institute of Physics Conference Proceedings
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23469
Deposited By: Dr Konstantinos Dimopoulos
Deposited On: 21 Jan 2009 14:17
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 16:10
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23469

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