A cosmic vector for dark energy

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dc.creatorJimenez, Jose Beltran
dc.creatorMaroto, Antonio L.
dc.date2008-01-09
dc.date2008-08-15
dc.date.accessioned2026-07-07T12:14:03Z
dc.date.available2026-07-07T12:14:03Z
dc.descriptionIn 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.
dc.description5 pages, 3 figures, 1 table. New comments and references included. Final version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0801.1486
dc.identifierhttp://arxiv.org/abs/0801.1486
dc.identifierPhys.Rev.D78:063005,2008
dc.identifierdoi:10.1103/PhysRevD.78.063005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211064
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA cosmic vector for dark energy
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