Gravity-induced instability and gauge field localization

Details Gravity-induced instability and gauge field localization Gravity-induced instability and gauge field localization

2005-04-03

arxiv.org/abs/hep-th/0504014v3

Phys.Lett. B621 (2005) 224-232

Physics

High Energy Physics

High Energy Physics - Theory

12 pages,4 figures, minor corrections, references added

Scientific paper

10.1016/j.physletb.2005.06.058

The spectrum of a massless bulk scalar field \Phi, with a possible interaction term of the form -\xi R \Phi^{2}, is investigated in the case of RS-geometry [1]. We show that the zero mode for \xi=0, turns into a tachyon mode, in the case of a nonzero negative value of \xi (\xi<0). As we see, the existence of the tachyon mode destabilizes the \Phi=0 vacuum, against a new stable vacuum with nonzero \Phi near the brane, and zero in the bulk. By using this result, we can construct a simple model for the gauge field localization, according to the philosophy of Dvali and Shifman (Higgs phase on the brane, confinement in the bulk).

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