4D Effective Theory and Geometrical Approach

Details 4D Effective Theory and Geometrical Approach 4D Effective Theory and Geometrical Approach

2006-09-07

arxiv.org/abs/hep-th/0609050v1

AIPConf.Proc.881:58-64,2007

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, 2 figures. Proceeding for the Cairo International Conference on High Energy Physics (CICHEP II), 14 - 17 January 2006

Scientific paper

10.1063/1.2435280

We consider the 4D effective theory for the light Kaluza-Klein (KK) modes. The heavy KK mode contribution is generally needed to reproduce the correct physical predictions: an equivalence, between the effective theory and the D-dimensional (or geometrical) approach to spontaneous symmetry breaking (SSB), emerges only if the heavy mode contribution is taken into account. This happens even if the heavy mode masses are at the Planck scale. In particular, we analyze a 6D Einstein-Maxwell model coupled to a charged scalar and fermions. Moreover, we briefly review non-Abelian and supersymmetric extensions of this theory.

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