Cascading gravity: Extending the dvali-gbadadze-porrati model to higher dimension

Claudia De Rham, Gia Dvali, Stefan Hofmann, Justin Khoury, Oriol Pujolàs, Michele Redi, Andrew J. Tolley

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We present a generalization of the Dvali-Gabadadze-Porrati scenario to higher codimensions which, unlike previous attempts, is free of ghost instabilities. The 4D propagator is made regular by embedding our visible 3-brane within a 4-brane, each with their own induced gravity terms, in a flat 6D bulk. The model is ghost-free if the tension on the 3-brane is larger than a certain critical value, while the induced metric remains flat. The gravitational force law "cascades" from a 6D behavior at the largest distances followed by a 5D and finally a 4D regime at the shortest scales.

    Original languageEnglish (US)
    Article number251603
    JournalPhysical Review Letters
    Volume100
    Issue number25
    DOIs
    StatePublished - Jun 27 2008

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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