Gravitational waves in expanding universe with cosmological constant

Hisa Aki Shinkai, Keiichi Maeda

    研究成果: Article

    抄録

    To investigate the cosmic no hair conjecture, we numerically analyze 1-dimensional inhomogeneous space-times. The spacetimes we study are to be a plane symmetric and vacuum with a positive cosmological constant. Initially we set the inhomogeneities due to gravitational pulse waves and examine the time evolution of the Riemann invariant (3)Rijkl (3)Rijkl and Weyl curvature Cμνρ{variant}σ on each hypersurfaces. We find a temporal growth of the curvature in the interacting regions of waves, but the expansion of the universe later overcomes this effects. Even if we set large Riemann invariant and/or small width scale of inhomogeneity on the initial hypersurface, the nonlinearity of the gravity has little effect and the spacetime results in a flat de-Sitter spacetime.

    元の言語English
    ページ(範囲)449-452
    ページ数4
    ジャーナルVistas in Astronomy
    37
    発行部数C
    DOI
    出版物ステータスPublished - 1993

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    inhomogeneity
    gravitational waves
    curvature
    universe
    hair
    nonlinearity
    gravity
    gravitation
    vacuum
    expansion
    pulses
    effect

    ASJC Scopus subject areas

    • Astronomy and Astrophysics

    これを引用

    Gravitational waves in expanding universe with cosmological constant. / Shinkai, Hisa Aki; Maeda, Keiichi.

    :: Vistas in Astronomy, 巻 37, 番号 C, 1993, p. 449-452.

    研究成果: Article

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