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Holographic constraints on a vector boson

par Kulaxizi, Manuela ;Rahman, Mohammad Rakibur
Référence The Journal of high energy physics, 2013, 4, page (1-20), 164
Publication Publié, 2013-04

Article révisé par les pairs

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Résumé :

We show that holography poses non-trivial restrictions on various couplings of an interacting field. For a vector boson in the AdS Reissner-Nordström background, the dual boundary theory is pathological unless its electromagnetic and gravitational multipole moments are constrained. Among others, a generic dipole moment afflicts the dual CFT with superluminal modes, whose remedy bounds the gyromagnetic ratio in a range around the natural value g = 2. We discuss the CFT implications of our results, and argue that similar considerations can shed light on how massive higher-spin fields couple to electromagnetism and gravity.