Anomaly Holography, the Wess-Zumino-Witten Term, and Electroweak Symmetry Breaking
arXiv:0803.0497 · doi:10.1016/j.physletb.2008.04.046
Abstract
I consider anomalies in effective field theories (EFTs) of gauge fields coupled to fermions on an interval in AdS_5, and their holographic duals. The anomalies give rise to constraints on the consistent EFT description, which are stronger than the usual four-dimensional anomaly cancellation condition for the zero modes. Even though the anomalies occur on both boundaries of the interval, corresponding to both the UV and the IR of the holographic dual, they are nevertheless consistent with the non-renormalization of the anomaly and the 't Hooft matching condition. They give rise, in general, to a Wess-Zumino-Witten (WZW) term in the four-dimensional, low-energy effective action, whose form I compute. Finally I discuss the relevance to holographic models of electroweak symmetry breaking. I show that the so-called `minimal composite Higgs models' have a consistent EFT description without a WZW term. In contrast, a variant of an earlier model of Contino, Nomura, and Pomarol does have a WZW term.
arXiv comment7 pp
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- Neutral-naturalness from a holographic SO(6)/SO(5) composite Higgs model
- Revealing Randall-Sundrum Hidden Valleys
- Odd Decays from Even Anomalies: Gauge Mediation Signatures Without SUSY
- Anomaly Inflow and Holography
- SU(3)/SU(2): the simplest Wess-Zumino-Witten term
- Interpretation of LHC excesses in ditop and ditau channels as a 400-GeV pseudoscalar resonance
- Going Beyond the Minimal Composite Higgs Model