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Resolution of Reissner-Nordstr\"om singularities by higher-derivative corrections

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arxiv 2006.15149 v2 pith:E45DY42P submitted 2020-06-26 hep-th gr-qc

Pablo A. Cano , Ángel Murcia This is my paper · ORCID
classification hep-thgr-qc
keywords higher-derivativereissner-nordstrtheoryarbitraryblackchargechargescomment
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abstract

We describe a non-minimal higher-derivative extension of Einstein-Maxwell theory in which electrically-charged black holes and point charges have globally regular gravitational and electromagnetic fields. We provide an exact static spherically symmetric solution of this theory that reduces to the Reissner-Nordstr\"om one at weak coupling, but in which the singularity at $r=0$ is regularized for arbitrary mass and (non-vanishing) charge. We discuss the properties of these solutions and comment on the physical significance of our results.

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    Near-extremal black holes in dynamical Chern-Simons gravity have a regular extremal endpoint matching the deformed near-horizon Kerr throat, while in scalar Gauss-Bonnet gravity the extremal throat is disconnected fro...

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