paper

Uniqueness theorems for static black holes in metric-affine gravity

arXiv:gr-qc/9911069 · doi:10.1103/PhysRevD.61.084017

Abstract

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 (-4β_4 + k_1β_5/2k_0 + k_2γ_4/k_0)/κz_4 \neq 0 on the coupling constants. For the special case (-4β_4 + k_1β_5/2k_0 + k_2γ_4/k_0)/κz_4 = 0, it follows that the only static non-extremal black hole is the Reissner-Nordström one. The results can be extended to exclude also the existence of soliton solutions of the triplet sector of MAG.

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

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