Cosmological rotating black holes in five-dimensional fake supergravity

Masato Nozawa, Keiichi Maeda

    Research output: Contribution to journalArticle

    16 Citations (Scopus)

    Abstract

    In recent series of papers, we found an arbitrary dimensional, time-evolving, and spatially inhomogeneous solution in Einstein-Maxwell-dilaton gravity with particular couplings. Similar to the supersymmetric case, the solution can be arbitrarily superposed in spite of nontrivial time-dependence, since the metric is specified by a set of harmonic functions. When each harmonic has a single point source at the center, the solution describes a spherically symmetric black hole with regular Killing horizons and the spacetime approaches asymptotically to the Friedmann-Lemaître-Robertson-Walker (FLRW) cosmology. We discuss in this paper that in 5 dimensions, this equilibrium condition traces back to the first-order "Killing spinor" equation in "fake supergravity" coupled to arbitrary U(1) gauge fields and scalars. We present a five-dimensional, asymptotically FLRW, rotating black-hole solution admitting a nontrivial "Killing spinor," which is a spinning generalization of our previous solution. We argue that the solution admits nondegenerate and rotating Killing horizons in contrast with the supersymmetric solutions. It is shown that the present pseudo-supersymmetric solution admits closed timelike curves around the central singularities. When only one harmonic is time-dependent, the solution oxidizes to 11 dimensions and realizes the dynamically intersecting M2/M2/M2-branes in a rotating Kasner universe. The Kaluza-Klein-type black holes are also discussed.

    Original languageEnglish
    Article number024018
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume83
    Issue number2
    DOIs
    Publication statusPublished - 2011 Jan 14

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    supergravity
    horizon
    harmonics
    harmonic functions
    metal spinning
    point sources
    time dependence
    cosmology
    universe
    gravitation
    scalars
    curves

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Cosmological rotating black holes in five-dimensional fake supergravity. / Nozawa, Masato; Maeda, Keiichi.

    In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 83, No. 2, 024018, 14.01.2011.

    Research output: Contribution to journalArticle

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