Uniqueness theorems for static black holes in metric-affine gravity

Details Uniqueness theorems for static black holes in metric-affine gravity Uniqueness theorems for static black holes in metric-affine gravity

1999-11-19

arxiv.org/abs/gr-qc/9911069v1

Phys.Rev. D61 (2000) 084017

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, RevTex, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.61.084017

Using the equivalence theorem for the triplet ansatz sector of metric-affine gravity (MAG) theories and the Einstein-Proca system, it is shown that the only static black hole of the triplet sector of MAG is the Schwarzschild solution, under the constraint (-4\beta_4 + k_1\beta_5/2k_0 + k_2\gamma_4/k_0)/\kappa z_4 \neq 0 on the coupling constants. For the special case (-4\beta_4 + k_1\beta_5/2k_0 + k_2\gamma_4/k_0)/\kappa z_4 = 0, it follows that the only static non-extremal black hole is the Reissner-Nordstr\"om one. The results can be extended to exclude also the existence of soliton solutions of the triplet sector of MAG.

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