Yang-Mills Localization in Warped Space

Details Yang-Mills Localization in Warped Space Yang-Mills Localization in Warped Space

2006-11-28

arxiv.org/abs/hep-th/0611305v1

Phys.Rev.D75:025022,2007

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, 3 figures

Scientific paper

10.1103/PhysRevD.75.025022

We present a mechanism to localize zero mode non-Abelian gauge fields in a slice of AdS_5. As in the U(1) case, bulk and boundary mass terms allow for a massless mode with an exponential profile that can be localized anywhere in the bulk. However in the non-Abelian extension, the cubic and quartic zero mode gauge couplings do not match, implying a loss of 4D gauge invariance. We show that the symmetry can be restored at the nonlinear level by considering brane-localized interactions, which are added in a gauge invariant way using boundary kinetic terms. Possible issues related to the scalar sector of the theory, such as strong coupling and ghosts, are also discussed. Our approach is then compared with other localization mechanisms motivated by dilaton gravity and deconstruction. Finally, we show how to localize the scalar component A_5 zero mode anywhere in the bulk which could be relevant in gauge-Higgs unification models.

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