Accelerated Universe and gravity modified at largest observable distances

Gia Dvali

    Research output: Contribution to journalArticle

    Abstract

    We discuss an idea that the cosmic acceleration of the Universe may be caused by modification of gravity at very large distances, and not by a dark energy source. Such a modification could, in particular, be triggered by extra space dimensions, to which gravity spreads over cosmic distances. This idea is testable by distant supernovae and other cosmological surveys. Also modified gravity predicts testable deviations in planetary motions. For the Moon this effect would show up in anomalous perihelion precessions of its orbit, and can be detected by lunar ranging experiments.

    Original languageEnglish (US)
    Pages (from-to)174-184
    Number of pages11
    JournalProgress of Theoretical Physics
    Issue numberSUPPL. 163
    DOIs
    StatePublished - 2006

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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