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- Bengtsson, Ingemar
(författare)
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A Kochen-Specker Inequality
- 2009
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Ingår i: AIP Conference Proceedings. - : AIP. - 0094-243X .- 1551-7616. ; 1101, s. 241-245
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- I review a paper by Klyachko, Can, Binicioğlu, and Shumovsky, and explain a little of the background as I see it
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- Bengtsson, Ingemar
(författare)
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A Note on Trapped Surfaces in the Vaidya Solution
- 2009
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Ingår i: Physical Review D. Particles and fields. - 0556-2821 .- 1089-4918. ; 79:2, s. 024027-
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Tidskriftsartikel (refereegranskat)abstract
- The Vaidya solution describes the gravitational collapse of a finite shell of incoherent radiation falling into flat spacetime and giving rise to a Schwarzschild black hole. There has been a question whether closed trapped surfaces can extend into the flat region (whereas closed outer trapped surfaces certainly can). For the special case of self-similar collapse we show that the answer is yes, if and only if the mass function rises fast enough.
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- Bengtsson, Ingemar, et al.
(författare)
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Anti-de Sitter Quotients: When Are They Black Holes?
- 2008
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Ingår i: Classical and quantum gravity. - 0264-9381 .- 1361-6382. ; 25, s. 095019-
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Tidskriftsartikel (refereegranskat)abstract
- e point out that the BTZ black holes, and their relatives, can be defined in a cleaner way than they originally were. The covering space can be taken to be anti-de Sitter space, period, while splits up into components due to Misner singularities. Our definition permits us to choose between two conflicting claims concerning BTZ black holes in (3 + 1) dimensions.
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