Cosmological attractors in massive gravity

S. L. Dubovsky, P. G. Tinyakov, I. I. Tkachev

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We study Lorentz-violating models of massive gravity which preserve rotations and are invariant under time-dependent shifts of the spatial coordinates. In the linear approximation the Newtonian potential in these models has an extra confining term proportional to the distance from the source. We argue that during cosmological expansion the Universe may be driven to an attractor point with larger symmetry which includes particular simultaneous dilatations of time and space coordinates. The confining term in the potential vanishes as one approaches the attractor. In the vicinity of the attractor the extra contribution is present in the Friedmann equation which, in a certain range of parameters, gives rise to the cosmic acceleration.

    Original languageEnglish (US)
    Article number084011
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume72
    Issue number8
    DOIs
    StatePublished - Oct 15 2005

    ASJC Scopus subject areas

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

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