Brane-induced gravity in more than one extra dimension: Violation of equivalence principle and ghost

S. L. Dubovsky, V. A. Rubakov

    Research output: Contribution to journalArticle

    Abstract

    We consider a brane-induced gravity model in more than one extra dimension, regularized by assuming that the bulk gravity is soft in the ultraviolet. We study linear theory about a flat multidimensional space-time and a flat brane. We first find that this model allows for the violation of equivalence between the gravitational and inertial masses of brane matter. We then observe that the model has a scalar ghost field localized near the brane, as well as a quasilocalized massive graviton. The pure tensor structure of four-dimensional gravity on the brane at intermediate distances is due to the cancellation between the extra polarization of the massive graviton and the ghost. This is completely analogous to the situation in the GRS model.

    Original languageEnglish (US)
    Article number104014
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume68
    Issue number10
    DOIs
    StatePublished - 2003

    Fingerprint

    Equivalence Principle
    Extra Dimensions
    ghosts
    Branes
    One Dimension
    equivalence
    Gravity
    gravitation
    gravitons
    Gravity Model
    cancellation
    near fields
    Cancellation
    Ultraviolet
    tensors
    scalars
    Polarization
    Tensor
    Space-time
    Equivalence

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)
    • Physics and Astronomy(all)
    • Nuclear and High Energy Physics
    • Mathematical Physics

    Cite this

    Brane-induced gravity in more than one extra dimension : Violation of equivalence principle and ghost. / Dubovsky, S. L.; Rubakov, V. A.

    In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 68, No. 10, 104014, 2003.

    Research output: Contribution to journalArticle

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