On the Decoupling of Heavy Modes in Kaluza-Klein Theories

Details On the Decoupling of Heavy Modes in Kaluza-Klein Theories On the Decoupling of Heavy Modes in Kaluza-Klein Theories

2006-01-11

arxiv.org/abs/hep-th/0601066v1

Nucl.Phys.B741:236-268,2006

Physics

High Energy Physics

High Energy Physics - Theory

38 pages, 1 figure

Scientific paper

10.1016/j.nuclphysb.2006.02.016

In this paper we examine the 4-dimensional effective theory for the light Kaluza-Klein (KK) modes. Our main interest is in the interaction terms. We point out that the contribution of the heavy KK modes is generally needed in order to reproduce the correct predictions for the observable quantities involving the light modes. As an example we study in some detail a 6-dimensional Einstein-Maxwell theory coupled to a charged scalar and fermions. In this case the contribution of the heavy KK modes are geometrically interpreted as the deformation of the internal space.

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