Charged Black Holes in a Five-dimensional Kaluza-Klein Universe
arXiv:1408.2956 · doi:10.1103/PhysRevD.90.084004
Abstract
We examine an exact solution which represents a charged black hole in a Kaluza-Klein universe in the five-dimensional Einstein-Maxwell theory. The spacetime approaches to the five-dimensional Kasner solution that describes expanding three dimensions and shrinking an extra dimension in the far region. The metric is continuous but not smooth at the black hole horizon. There appears a mild curvature singularity that a free-fall observer can traverse the horizon. The horizon is a squashed three-sphere with a constant size, and the metric is approximately static near the horizon.
17 pages, 3 figures, v2: minor changes
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