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Absence of a VVDZ Discontinuity in AdSAdS

Andreas Karch, Emanuel Katz, Lisa Randall

hep-tharXiv:hep-th/0106261

Abstract

We clarify the role of gauge invariance for the theory of an AdS4 brane embedded in AdS5. The presence of a nonvanishing mass parameter even for the lightest KK mode of the graviton indicates that all of the spin-2 modes propagate five polarization states. Despite this fact, it was shown earlier that the classical theory has a smooth limit as the mass parameter is taken to zero. We argue that locality in the fifth dimension ensures that this property survives at the quantum level.

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