Cosmic censorship violation in black hole collisions in higher dimensions
Dec 12, 2018
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Abstract: (arXiv)
We argue that cosmic censorship is violated in the collision of two black holes in high spacetime dimension D when the initial total angular momentum is sufficiently large. The two black holes merge and form an unstable bar-like horizon, which grows a neck in its middle that pinches down with diverging curvature. When D is large, the emission of gravitational radiation is strongly suppressed and cannot spin down the system to a stable rotating black hole before the neck grows. The phenomenon is demonstrated using simple numerical simulations of the effective theory in the 1/D expansion. We propose that, even though cosmic censorship is violated, the loss of predictability is small independently of D.Note:
- 9 pages, 2 figures. v2: matches published version
- Black Holes
- Spacetime Singularities
- Classical Theories of Gravity
- cosmic censorship: violation
- black hole: rotation
- gravitational radiation: emission
- space-time: dimension
- stability: rotation
- numerical calculations
- higher-dimensional
References(20)
Figures(2)
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