@article{bfd61abec3284411aa49663107d01d47,
title = "Square Peg in a Circular Hole: Choosing the Right Ansatz for Isolated Black Holes in Generic Gravitational Theories",
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 nonstandard kinetic terms and nonmininal couplings to gravity are treated perturbatively.",
author = "Yiqi Xie and Jun Zhang and Silva, {Hector O.} and {De Rham}, Claudia and Helvi Witek and Nicol{\'a}s Yunes",
note = "Funding Information: We thank Lydia Bieri, Daniela Doneva, David Garfinkle, Leonardo Gualtieri, Carlos A. R. Herdeiro, and Jutta Kunz for discussions. Y. X., H. O. S., and N. Y. acknowledge financial support through NSF Grants No. PHY-1759615 and No. PHY-1949838 and NASA ATP Grants No. 17-ATP17-0225, No. NNX16AB98G, and No. 80NSSC17M0041. C. d. R. and J. Z. acknowledge financial support provided by the European Union{\textquoteright}s Horizon 2020 Research Council Grant 724659 MassiveCosmo ERC-2016-COG. H. W. acknowledges financial support provided by the NSF Grant No. OAC-2004879 and the Royal Society Research Grant No. RGF\R1\180073. C. d. R. also acknowledges financial support provided by STFC Grants No. ST/P000762/1 and No. ST/T000791/1, by the Royal Society through a Wolfson Research Merit Award, by the Simons Foundation award ID 555326 under the Simons Foundation{\textquoteright}s Origins of the Universe initiative, “Cosmology Beyond Einstein{\textquoteright}s Theory,” and by the Simons Investigator award 690508. Publisher Copyright: {\textcopyright} 2021 American Physical Society.",
year = "2021",
month = jun,
day = "18",
doi = "10.1103/PhysRevLett.126.241104",
language = "English (US)",
volume = "126",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "24",
}