Vector Bosons in the Randall-Sundrum 2 and Lykken-Randall models and unparticles

Details Vector Bosons in the Randall-Sundrum 2 and Lykken-Randall models and unparticles Vector Bosons in the Randall-Sundrum 2 and Lykken-Randall models and unparticles

2009-05-17

arxiv.org/abs/0905.2607v1

JHEP 0909:033,2009

Physics

High Energy Physics

High Energy Physics - Theory

60 pages, 8 figures

Scientific paper

10.1088/1126-6708/2009/09/033

Unparticle behavior is shown to be realized in the Randall-Sundrum 2 (RS 2) and the Lykken-Randall (LR) brane scenarios when brane-localized Standard Model currents are coupled to a massive vector field living in the five-dimensional warped background of the RS 2 model. By the AdS/CFT dictionary these backgrounds exhibit certain properties of the unparticle CFT at large N_c and strong 't Hooft coupling. Within the RS 2 model we also examine and contrast in detail the scalar and vector position-space correlators at intermediate and large distances. Unitarity of brane-to-brane scattering amplitudes is seen to imply a necessary and sufficient condition on the positivity of the bulk mass, which leads to the well-known unitarity bound on vector operators in a CFT.

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