Dynamics of quiet universes

Hiraku Mutoh, Toshinari Hirai, Keiichi Maeda

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    We study the stability of a contracting silent universe, which is a spacetime with irrotational dust and vanishing magnetic part of the Weyl tensor, Hab=0. Two general relativistic backgrounds are analyzed: one is an attractor of silent universes, i.e., a locally Kasner spacetime, and the other is a particular class of inhomogeneous Szekeres solutions. In both cases their stabilities against perturbations with a nonzero magnetic part depend on a contraction configuration; a spindlelike collapse is unstable, while a pancakelike colapse is still stable. We also find that a similar instability exists in spindle collapse for a Newtonian case. We conclude that Hab=0 is not a generic ansatz even in general relativistic dust collapse.

    Original languageEnglish
    Pages (from-to)3276-3287
    Number of pages12
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume55
    Issue number6
    Publication statusPublished - 1997 Mar 15

    Fingerprint

    universe
    dust
    Space-time
    Weyl Tensor
    spindles
    contraction
    Attractor
    Contraction
    Unstable
    tensors
    Perturbation
    perturbation
    Configuration
    configurations
    Class
    Background

    ASJC Scopus subject areas

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

    Cite this

    Dynamics of quiet universes. / Mutoh, Hiraku; Hirai, Toshinari; Maeda, Keiichi.

    In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 55, No. 6, 15.03.1997, p. 3276-3287.

    Research output: Contribution to journalArticle

    Mutoh, Hiraku ; Hirai, Toshinari ; Maeda, Keiichi. / Dynamics of quiet universes. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 1997 ; Vol. 55, No. 6. pp. 3276-3287.
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