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arXiv:0801.1486 (astro-ph)
[Submitted on 9 Jan 2008 (v1), last revised 15 Aug 2008 (this version, v2)]

Title:A cosmic vector for dark energy

Authors:Jose Beltran Jimenez, Antonio L. Maroto
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Abstract: In this work we show that the presence of a vector field on cosmological scales could explain the present phase of accelerated expansion of the universe. The proposed theory contains no dimensional parameters nor potential terms and does not require unnatural initial conditions in the early universe, thus avoiding the so called cosmic coincidence problem. In addition, it fits the data from high-redshift supernovae with excellent precision, making definite predictions for cosmological parameters. Upcoming observations will be able to clearly discriminate this model from standard cosmology with cosmological constant.
Comments: 5 pages, 3 figures, 1 table. New comments and references included. Final version to appear in Phys. Rev. D
Subjects: Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:0801.1486 [astro-ph]
  (or arXiv:0801.1486v2 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0801.1486
Journal reference: Phys.Rev.D78:063005,2008
Related DOI: https://doi.org/10.1103/PhysRevD.78.063005

Submission history

From: Antonio Lopez Maroto [view email]
[v1] Wed, 9 Jan 2008 19:19:57 UTC (1,034 KB)
[v2] Fri, 15 Aug 2008 11:23:23 UTC (957 KB)
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