Mass and gauge invariance: Holography for the Karch-Randall model

M. Porrati

    Research output: Contribution to journalArticlepeer-review


    We argue that the Karch-Randall compactification is holographically dual to a 4D conformal field theory coupled to gravity on anti-de Sitter space. Using this interpretation we recover the mass spectrum of the model. In particular, we find no massless spin-2 states. By giving a purely 4D interpretation to the compactification we make clear that it represents the first example of a local 4D field theory in which general covariance does not imply the existence of a massless graviton. We also discuss some variations of the Karch-Randall model discussed in the literature, and we examine whether its properties are generic to all conformal field theory.

    Original languageEnglish (US)
    Article number044015
    JournalPhysical Review D
    Issue number4
    StatePublished - 2002

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)


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