Journal
PHYSICAL REVIEW LETTERS
Volume 121, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.121.251105
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Funding
- European Union's H2020 ERC Consolidator Grant Matter and strong-field gravity: New frontiers in Einstein's theory [MaGRaTh-646597]
- innovation programme under the Marie Sklodowska-Curie Grant [690904]
- GWverse COST Action [CA16104]
- Simons Foundation Origins of the Universe program (Modern Inflationary Cosmology collaboration)
- NSF [1720397]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1720397] Funding Source: National Science Foundation
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Effective field theory methods suggest that some rather general extensions of general relativity include, or are mimicked by, certain higher-order curvature corrections, with coupling constants expected to be small but otherwise arbitrary. Thus, the tantalizing prospect to test the fundamental nature of gravity with gravitational-wave observations, in a systematic way, emerges naturally. Here, we build black hole solutions in such a framework and study their main properties. Once rotation is included, we find the first purely gravitational example of geometries without Z(2) symmetry. Despite the higher-order operators of the theory, we show that linearized fluctuations of such geometries obey second-order differential equations. We find nonzero tidal Love numbers. We study and compute the quasinormal modes of such geometries. These results are of interest to gravitational-wave science but also potentially relevant for electromagnetic observations of the galactic center or x-ray binaries.
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