Holographic Renormalisation and the Electroweak Precision Parameters

Abstract

We study the effects of holographic renormalisation on an AdS/QCD inspired description of dynamical electroweak symmetry breaking. Our model is a 5D slice of AdS_5 geometry containing a bulk scalar and SU(2) times SU(2) gauge fields. The scalar field obtains a VEV which represents a condensate that triggers electroweak symmetry breaking. Fermion fields are constrained to live on the UV brane and do not propagate in the bulk. The two-point functions are holographically renormalised through the addition of boundary counterterms. Measurable quantities are then expressed in terms of well defined physical parameters, free from any spurious dependence on the UV cut-off. A complete study of the precision parameters is carried out and bounds on physical quantities derived. The large-N scaling of results is discussed.

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• Multiscale confining dynamics from holographic RG flows
• A composite light scalar, electro-weak symmetry breaking and the recent LHC searches
• Hyperscaling violation and Electroweak Symmetry Breaking
• Warped 5D Standard Model Consistent with EWPT
• Holographic Schwinger-Keldysh field theory of SU(2) diffusion
• Generalised Holographic Electroweak Symmetry Breaking Models and the Possibility of Negative S
• Constraining holographic technicolor
• Chiral phase transition: effective field theory and holography
• Studies on Generalized Warped Five-Dimensional Models