Black hole in the expanding universe from intersecting branes

Keiichi Maeda, Masato Nozawa

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    33 Citations (Scopus)

    Abstract

    We study physical properties and global structures of a time-dependent, spherically symmetric solution obtained via the dimensional reduction of intersecting M-branes. We find that the spacetime describes a maximally charged black hole which asymptotically tends to the Friedmann-Lemaître-Robertson- Walker universe filled by a stiff matter. The metric solves the field equations of the Einstein-Maxwell-dilaton system, in which four Abelian gauge fields couple to the dilation with different coupling constants. The spacetime satisfies the dominant energy condition and is characterized by two parameters, Q and τ, related to the Maxwell charge and the relative ratio of black-hole horizon radii, respectively. In spite of the nontrivial time dependence of the metric, it turns out that the black-hole event horizon is a Killing horizon. This unexpected symmetry may be ascribed to the fact that the 11-dimensional brane configurations are supersymmetric in the static limit. Finally, combining with laws of the trapping horizon, we discuss the thermodynamic properties of the black hole. It is shown that the horizon possesses a nonvanishing temperature, contrary to the extremal Reissner-Nordström solution.

    Original languageEnglish
    Article number044017
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume81
    Issue number4
    DOIs
    Publication statusPublished - 2010 Feb 10

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    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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