N-ification of Forces: A Holographic Perspective on D-brane Model Building

Details N-ification of Forces: A Holographic Perspective on D-brane Model Building N-ification of Forces: A Holographic Perspective on D-brane Model Building

2008-04-07

arxiv.org/abs/0804.1125v1

JHEP 0906:030,2009

Physics

High Energy Physics

High Energy Physics - Theory

47 pages, 10 figures

Scientific paper

10.1088/1126-6708/2009/06/030

We study geometric aspects of extensions of the supersymmetric standard model that exhibit a periodic duality cascade. Via the holographic correspondence, the growth of the gauge group rank towards the UV is interpreted as a gradual decompactification transition. We show that this class of models typically develop a duality wall in the UV, and present an efficient method for estimating the hierarchy between the on-set of the cascade and the formation of the wall. As an illustrative example, we study the model introduced by Cascales, Saad and Uranga in [14], which has an known geometric realization in terms of D-branes on an SPP/Z_3 singularity.

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