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Non-singular quantum improved rotating black holes and their maximal extension

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arxiv 1702.03567 v2 pith:IR7E3CC3 submitted 2017-02-12 gr-qc

Non-singular quantum improved rotating black holes and their maximal extension

classification gr-qc
keywords blackholequantumrotatingextendedspacetimeimprovedmaximally
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We add a prescription to the Newman-Janis algorithm in order to use it as a means of finding new extended (`through r<0') rotating black hole spacetimes from static spherically symmetric ones. Then, we apply the procedure to a quantum improved black hole spacetime coming from Quantum Einstein Gravity. The goal is to get a maximally extended spacetime corresponding to a non-singular rotating black hole emulating the standard maximally extended Kerr black hole in regions where quantum effects are negligible. We rigourously check for the existence of scalar curvature singularities in the quantum improved rotating spacetime and we show that it is devoid of them. We also analyze the horizons and causal structure of the rotating black hole and provide Penrose diagrams for the maximally extended spacetime.

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