Creation of the universe with a stealth scalar field

Hideki Maeda, Keiichi Maeda

    Research output: Contribution to journalArticle

    12 Citations (Scopus)

    Abstract

    The stealth scalar field is a nontrivial configuration without any backreaction to geometry, which is characteristic for nonminimally coupled scalar fields. Studying the creation probability of the de Sitter universe with a stealth scalar field by Hartle and Hawking's semiclassical method, we show that the effect of the stealth field can be significant. For the class of scalar fields we consider, creation with a stealth field is possible for a discrete value of the coupling constant, and its creation probability is always less than that with a trivial scalar field. However, those creation rates can be almost the same depending on the parameters of the theory.

    Original languageEnglish
    Article number124045
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume86
    Issue number12
    DOIs
    Publication statusPublished - 2012 Dec 26

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    universe
    scalars
    geometry
    configurations

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Creation of the universe with a stealth scalar field. / Maeda, Hideki; Maeda, Keiichi.

    In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 86, No. 12, 124045, 26.12.2012.

    Research output: Contribution to journalArticle

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