Rotating black holes embedded in a cosmological background for scalar-tensor theories
نویسندگان
چکیده
Abstract We present solutions of DHOST theories describing a rotating black hole embedded in an expanding universe. The solution is constructed by conformal transformation stealth Kerr(-de Sitter) hole. factor depends explicitly on the scalar field — but not its derivative and defines new theory. time, leading to time-dependence obtained metric, with cosmological asymptotics at large distances. study properties metric considering regular null geodesic congruences, identify trapping horizons.
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2023
ISSN: ['1475-7516', '1475-7508']
DOI: https://doi.org/10.1088/1475-7516/2023/08/022