Cosmological implications of Bumblebee vector models
arXiv:1501.07685 · doi:10.1103/PhysRevD.91.104007
Abstract
The Bumblebee Model of spontaneous Lorentz symmetry breaking is explored in a cosmological context, considering a single non-zero time component for the vector field. The relevant dynamic equations for the evolution of the Universe are derived and its properties and physical significance studied. We conclude that a late-time de Sitter expansion of the Universe can be replicated, and attempt to constrain the parameter of the potential driving the spontaneous symmetry breaking.
11 pages, 10 figures, 1 table. Accepted for publication in PRD
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