On brane-induced gravity in warped backgrounds

Sergey L. Dubovsky, Maxim V. Libanov

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We study whether modification of gravity at large distances is possible in warped backgrounds with two branes and a brane-induced term localized on one of the branes. We find that there are three large regions in the parameter space where the theory is weakly coupled up to high energies. In one of these regions gravity on the brane is four-dimensional at arbitrarily large distances, and the induced Einstein term results merely in the renormalization of the 4d Planck mass. In the other two regions the behavior of gravity changes at ultra-large distances; however, radion becomes a ghost. In parts of these regions, both branes have positive tensions, so the only reason for the appearance of the ghost field is the brane-induced term. In between these three regions, there are domains in the parameter space where gravity is strongly coupled at phenomenologically unacceptable low energy scale.

    Original languageEnglish (US)
    Pages (from-to)865-878
    Number of pages14
    JournalJournal of High Energy Physics
    Volume7
    Issue number11
    DOIs
    StatePublished - Nov 1 2003

    Keywords

    • Extra Large Dimensions
    • Field Theories in Higher Dimensions

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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