Why not a di-NUT? or Gravitational duality and rotating solutions

Details Why not a di-NUT? or Gravitational duality and rotating solutions Why not a di-NUT? or Gravitational duality and rotating solutions

2009-09-03

arxiv.org/abs/0909.0542v2

Physics

High Energy Physics

High Energy Physics - Theory

20 pages. v2: minor clarifications in section 4, version to appear in PRD

Scientific paper

We study how gravitational duality acts on rotating solutions, using the Kerr-NUT black hole as an example. After properly reconsidering how to take into account both electric (i.e. mass-like) and magnetic (i.e. NUT-like) sources in the equations of general relativity, we propose a set of definitions for the dual Lorentz charges. We then show that the Kerr-NUT solution has non-trivial such charges. Further, we clarify in which respect Kerr's source can be seen as a mass M with a dipole of NUT charges.

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