Creation of a brane world with a bulk scalar field

Koh Suke Aoyanagi, Keiichi Maeda

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    We investigate the creation of a brane world with a bulk scalar field. We consider an exponential potential of a bulk scalar field: , where β is the parameter of the theory. This model is based on a supersymmetric theory, and includes the Randall-Sundrum model (β = 0) and the five-dimensional effective model of the Horva-Witten theory (β = 1). We show that for this potential a brane instanton is constructed only when the curvature of a brane vanishes, that is, the brane is flat. We construct an instanton with two branes and a singular instanton with a single brane. The Euclidean action of the singular instanton solution is finite if β 2>2/3. We also calculate perturbations of the action around a singular instanton solution in order to show that the singular instanton is well defined.

    Original languageEnglish
    Article number012
    JournalJournal of Cosmology and Astroparticle Physics
    Issue number3
    DOIs
    Publication statusPublished - 2006 Mar 1

    Fingerprint

    instantons
    scalars
    curvature
    perturbation

    Keywords

    • Cosmological phase transitions string theory and cosmology
    • Cosmology with extra dimensions
    • Gravity

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Creation of a brane world with a bulk scalar field. / Aoyanagi, Koh Suke; Maeda, Keiichi.

    In: Journal of Cosmology and Astroparticle Physics, No. 3, 012, 01.03.2006.

    Research output: Contribution to journalArticle

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