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Brane Lorentz Symmetry from Lorentz Breaking in the Bulk

O. Bertolami, C. Carvalho

gr-qcarXiv:gr-qc/0612129

Abstract

We propose the mechanism of spontaneous symmetry breaking of a bulk vector field as a way to generate the selection of bulk dimensions invisible to the standard model confined to the brane. By assigning a non-vanishing vacuum value to the vector field, a direction is singled out in the bulk vacuum, thus breaking the bulk Lorentz symmetry. We present the condition for induced Lorentz symmetry on the brane, as phenomenologically required.

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