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Article Dans Une Revue Physical Review D Année : 2017

Zero mass limit of Kerr spacetime is a wormhole

Résumé

We show that, contrary to what is usually claimed in the literature, the zero mass limit of Kerr spacetime is not flat Minkowski space but a spacetime whose geometry is only locally flat. This limiting spacetime, as the Kerr spacetime itself, contains two asymptotic regions and hence cannot be topologically trivial. It also contains a curvature singularity, because the power-law singularity of the Weyl tensor vanishes in the limit but there remains a distributional contribution of the Ricci tensor. This spacetime can be interpreted as a wormhole sourced by a negative tension ring. We also extend the discussion to similarly interpret the zero mass limit of the Kerr–(anti–)de Sitter spacetime.

Dates et versions

hal-01645539 , version 1 (23-11-2017)

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Citer

Gary W. Gibbons, Mikhail S. Volkov. Zero mass limit of Kerr spacetime is a wormhole. Physical Review D, 2017, 96 (2), pp.024053. ⟨10.1103/PhysRevD.96.024053⟩. ⟨hal-01645539⟩
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