Special massive spin-2 on the de Sitter space

Gregory Gabadadze, Alberto Iglesias

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The theory of a massive spin-2 state on the de Sitter space - with the mass squared equal to one sixth of the curvature - is special for two reasons: (i) it exhibits an enhanced local symmetry; (ii)it emerges as a part of the model that gives rise to the self-accelerated Universe. The known problems of this theory are: either it cannot be coupled to a non-conformal conserved stress-tensor because of the enhanced symmetry, or it propagates a ghost-like state when the symmetry is constrained by the Lagrange multiplier method. Here we propose a solution to these problems in the linearized approximation.

    Original languageEnglish (US)
    Article number014
    JournalJournal of Cosmology and Astroparticle Physics
    Volume2008
    Issue number2
    DOIs
    StatePublished - Feb 1 2008

    Keywords

    • Dark energy theory
    • Gravity

    ASJC Scopus subject areas

    • Astronomy and Astrophysics

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