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

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Franco, Sebastian
Rodriguez-Gomez, Diego
Verlinde, Herman
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Abstract
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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.
Comment: 47 pages, 10 figures
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High Energy Physics - Theory
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