Oscillating Bianchi IX universe in Hořava-Lifshitz gravity

Yosuke Misonoh, Keiichi Maeda, Tsutomu Kobayashi

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    We study a vacuum Bianchi IX universe in the context of Hořava-Lifshitz gravity. In particular, we focus on the classical dynamics of the universe and analyze how anisotropy changes the history of the universe. For small anisotropy, we find an oscillating universe as well as a bounce universe just as the case of the Friedmann-Lemaitre-Robertson-Walker spacetime. However, if the initial anisotropy is large, we find the universe which ends up with a big crunch after oscillations if a cosmological constant Λ is zero or negative. For Λ>0, we find a variety of histories of the universe, that is a de Sitter expanding universe after oscillations in addition to the oscillating solution and the previous big crunch solution. This fate of the universe shows sensitive dependence of initial conditions, which is one of the typical properties of a chaotic system. If the initial anisotropy is near the upper bound, we find the universe starting from a big bang and ending up with a big crunch for Λ≤0, and a de Sitter expanding universe starting from a big bang for Λ>0.

    Original languageEnglish
    Article number064030
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume84
    Issue number6
    DOIs
    Publication statusPublished - 2011 Sep 20

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    universe
    gravitation
    anisotropy
    histories
    oscillations
    vacuum

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Oscillating Bianchi IX universe in Hořava-Lifshitz gravity. / Misonoh, Yosuke; Maeda, Keiichi; Kobayashi, Tsutomu.

    In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 84, No. 6, 064030, 20.09.2011.

    Research output: Contribution to journalArticle

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