Generalized Lense-Thirring metrics: higher-curvature corrections and solutions with matter
Dec 14, 2021
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Abstract: (Springer)
The Lense-Thirring spacetime describes a 4-dimensional slowly rotating approximate solution of vacuum Einstein equations valid to a linear order in rotation parameter. It is fully characterized by a single metric function of the corresponding static (Schwarzschild) solution. In this paper, we introduce a generalization of the Lense-Thirring spacetimes to the higher-dimensional multiply-spinning case, with an ansatz that is not necessarily fully characterized by a single (static) metric function. This generalization lets us study slowly rotating spacetimes in various higher curvature gravities as well as in the presence of non-trivial matter. Moreover, the ansatz can be recast in Painlevé-Gullstrand form (and thence is manifestly regular on the horizon) and admits a tower of exact rank-2 and higher rank Killing tensors that rapidly grows with the number of dimensions. In particular, we construct slowly multiply-spinning solutions in Lovelock gravity and notably show that in four dimensions Einstein gravity is the only non-trivial theory amongst all up to quartic curvature gravities that admits a Lense-Thirring solution characterized by a single metric function.Note:
- v2: Generalized metric ansatz, added refs, improved notation. 17 pages and 2 appendices
- Black Holes
- Classical Theories of Gravity
- Black Holes in String Theory
- Supergravity Models
- space-time: rotation
- dimension: 4
- gravitation: Lovelock
- vacuum: solution
- curvature: high
- tensor: Killing
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