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Cosmic vector for dark energy

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Beltrán Jiménez, José and López Maroto, Antonio (2008) Cosmic vector for dark energy. Physical Review D, 78 (6). ISSN 550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.78.063005


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http://journals.aps.org/Publisher


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.


Item Type:Article
Additional Information:

This work has been supported by DGICYT (Spain)
Project No. FPA 2004-02602 and No. FPA 2005-02327,
UCM-Santander PR34/07-15875, and by CAM/UCM
910309. J. B. acknowledges support from MEC Grant
No. BES-2006-12059

Uncontrolled Keywords:Probe wmap observations, Supernovae, Cosmology, Space
Subjects:Sciences > Physics
ID Code:27129
Deposited On:28 Oct 2014 11:24
Last Modified:28 Oct 2014 11:24

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