SMuK 2021 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 1: Black Holes
GR 1.5: Vortrag
Montag, 30. August 2021, 12:00–12:15, H2
Spin-Induced Scalarized Black Holes — Emanuele Berti1, Lucas Collodel2, Burkhard Kleihaus3, and •Jutta Kunz3 — 1Johns Hopkins University Baltimore — 2University of Tübingen — 3University of Oldenburg
When General Relativity is supplemented with a Gauss-Bonnet term coupled to a scalar field, scalarized black holes arise. For appropriately chosen coupling functions Kerr black holes remain solutions of the field equations, but undergo a tachyonic instability, where curvature induced scalarized black holes arise. For slow rotation, these scalarized rotating black holes are connected to the static black holes. However, for fast rotation a second set of scalarized black holes arises, which exist only above the value of the Kerr rotation parameter a=0.5 M. In this talk such even and odd parity black hole solutions with spin-induced scalarization are presented, and their properties are discussed.