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Journal Article

Square Peg in a Circular Hole: Choosing the Right Ansatz for Isolated Black Holes in Generic Gravitational Theories

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Silva,  Hector Okada da
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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2103.03925.pdf
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Citation

Xie, Y., Zhang, J., Silva, H. O. d., de Rham, C., Witek, H., & Yunes, N. (2021). Square Peg in a Circular Hole: Choosing the Right Ansatz for Isolated Black Holes in Generic Gravitational Theories. Physical Review Letters, 126(24): 241104. doi:10.1103/PhysRevLett.126.241104.


Cite as: https://hdl.handle.net/21.11116/0000-0008-3CFC-A
Abstract
The metric of a spacetime can be greatly simplified if the spacetime is
circular. We prove that in generic effective theories of gravity, the spacetime
of a stationary, axisymmetric and asymptotically flat solution must be circular
if the solution can be obtained perturbatively from a solution in the General
Relativity limit. This result applies to a broad class of gravitational
theories, that include arbitrary scalars and vectors in their light sector, so
long as their non-standard kinetic terms and non-mininal couplings to gravity
are treated perturbatively.