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GR: Fachverband Gravitation und Relativitätstheorie

GR 15: Quantum Gravity II

GR 15.5: Vortrag

Freitag, 23. März 2018, 10:00–10:15, NW-Bau - HS3

Black Holes within the Asymptotically Safe Scenario of Quantum Gravity — •Dennis Stock — University of Bremen, Center of Applied Space Technology and Microgravity (ZARM), 28359 Bremen

We study the effects of quantum gravity on black hole geometries within the set-up of asymptotically safe quantum gravity. Under the assumption that leading order quantum effects are taken into account, by promoting Newton's and the cosmological constant to scale-dependent functions, we arrive at a quantum-improved metric for Schwarzschild-(A)dS and Kerr-(A)dS. Different constructions, to relate the momentum scale within the FRG-formalism to a length scale, are discussed using numerical as well as analytical methods. Depending on parameters such as the mass and angular momentum of the black hole, the quantum-improved black holes can display a different number of horizons to their counterparts in general relativity. Further results addressed include the Penrose diagrams, the investigation of the central curvature singularity via the Kretschmann scalar, and the Hawking temperatures, together with the implications for the endpoint of the black hole evaporation process.