Black holes in an expanding universe

Gary W. Gibbons, Keiichi Maeda

    Research output: Contribution to journalArticle

    43 Citations (Scopus)

    Abstract

    An exact solution representing black holes in an expanding universe is found. The black holes are maximally charged and the universe is expanding with arbitrary equation of state (P=wρ with -1≤zolution of the Einstein-scalar-Maxwell system, in which we have two Maxwell-type U(1) fields coupled to the scalar field. The potential of the scalar field is an exponential. We find a regular horizon, which depends on one parameter [the ratio of the energy density of U(1) fields to that of the scalar field]. The horizon is static because of the balance on the horizon between gravitational attractive force and U(1) repulsive force acting on the scalar field. We also calculate the black hole temperature.

    Original languageEnglish
    Article number131101
    JournalPhysical Review Letters
    Volume104
    Issue number13
    DOIs
    Publication statusPublished - 2010 Apr 2

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    universe
    scalars
    horizon
    equations of state
    flux density
    temperature

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Black holes in an expanding universe. / Gibbons, Gary W.; Maeda, Keiichi.

    In: Physical Review Letters, Vol. 104, No. 13, 131101, 02.04.2010.

    Research output: Contribution to journalArticle

    Gibbons, Gary W. ; Maeda, Keiichi. / Black holes in an expanding universe. In: Physical Review Letters. 2010 ; Vol. 104, No. 13.
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