Observable consequences of strong coupling in theories with large distance modified gravity

Gia Dvali

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    In this talk, we review theories that modify gravity at cosmological distances, and show that any such theory must exhibit a strong coupling phenomenon. We show that all consistent theories that modify the dynamics of the spin-2 graviton on asymptotically flat backgrounds, automatically have this property. Due to the strong coupling effect, modification of the gravitational force is source-dependent, and for lighter sources sets in at shorter distances. This universal feature makes modified gravity theories predictive and potentially testable by precision gravitational measurements at scales much shorter than the current cosmological horizon.

    Original languageEnglish (US)
    Title of host publicationFrom Quantum to Cosmos: Fundamental Physics Research in Space
    PublisherWorld Scientific Publishing Co.
    Pages139-147
    Number of pages9
    ISBN (Print)9789814261210, 9814261203, 9789814261203
    DOIs
    StatePublished - Jan 1 2009

    Fingerprint

    gravitation
    gravitons
    horizon

    Keywords

    • Dark energy
    • Modified gravity
    • Strong coupling

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Dvali, G. (2009). Observable consequences of strong coupling in theories with large distance modified gravity. In From Quantum to Cosmos: Fundamental Physics Research in Space (pp. 139-147). World Scientific Publishing Co.. https://doi.org/10.1142/9789814261210_0011

    Observable consequences of strong coupling in theories with large distance modified gravity. / Dvali, Gia.

    From Quantum to Cosmos: Fundamental Physics Research in Space. World Scientific Publishing Co., 2009. p. 139-147.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Dvali, G 2009, Observable consequences of strong coupling in theories with large distance modified gravity. in From Quantum to Cosmos: Fundamental Physics Research in Space. World Scientific Publishing Co., pp. 139-147. https://doi.org/10.1142/9789814261210_0011
    Dvali G. Observable consequences of strong coupling in theories with large distance modified gravity. In From Quantum to Cosmos: Fundamental Physics Research in Space. World Scientific Publishing Co. 2009. p. 139-147 https://doi.org/10.1142/9789814261210_0011
    Dvali, Gia. / Observable consequences of strong coupling in theories with large distance modified gravity. From Quantum to Cosmos: Fundamental Physics Research in Space. World Scientific Publishing Co., 2009. pp. 139-147
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