Purely metric Horndeski theories and spontaneous curvaturization of black holes
We explore purely metric theories of gravity with second-order equations of motion and a single additional, purely gravitational, propagating, scalar degree of freedom. We identify a subclass of these theories in which this scalar causes a phenomenon similar to black-hole scalarization, which we cal...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2 May 2025
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| In: |
Physical review
Year: 2025, Jahrgang: 111, Heft: 10, Pages: 1-15 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.111.104007 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.111.104007 Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.111.104007 
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| Verfasserangaben: | Astrid Eichhorn, and Pedro G.S. Fernandes |
MARC
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| 520 | |a We explore purely metric theories of gravity with second-order equations of motion and a single additional, purely gravitational, propagating, scalar degree of freedom. We identify a subclass of these theories in which this scalar causes a phenomenon similar to black-hole scalarization, which we call curvaturization: around small enough Kerr black holes, the scalar induces a tachyonic instability. This triggers a sudden growth of Ricci curvature and results in a new branch of vacuum black-hole solutions. We study the properties of these black holes both in the static as well as the spinning case. | ||
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