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Field localization in warped gauge theories

Hiroyuki Abe·Tatsuo Kobayashi·Nobuhito Maru·Koichi Yoshioka
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Abstract

We present four-dimensional gauge theories that describe physics on five-dimensional curved (warped) backgrounds, which includes bulk fields with various spins (vectors, spinors, and scalars). Field theory on the AdS$_5$ geometry is examined as a simple example of our formulation. Various properties of bulk fields on this background, e.g., the mass spectrum and field localization behavior, can be achieved within a fully four-dimensional framework. Moreover, that gives a localization mechanism for massless vector fields. We also consider supersymmetric cases, and show in particular that the conditions on bulk masses imposed by supersymmetry on warped backgrounds are derived from a four-dimensional supersymmetric theory on the flat background. As a phenomenological application, models are shown to generate hierarchical Yukawa couplings. Finally, we discuss possible underlying mechanisms which dynamically realize the required couplings to generate curved geometries.

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Hiroyuki Abe, Tatsuo Kobayashi, Nobuhito Maru, Koichi Yoshioka. 2003-01-27. Field localization in warped gauge theories. https://doi.org/10.1103/physrevd.67.045019

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