Cylindrical black bounces and their field sources
arXiv:2305.19296 · doi:10.1103/PhysRevD.108.024065
Abstract
We apply the Simpson-Visser phenomenological regularization method to a cylindrically symmetric solution of the Einstein-Maxwell equations known as an inverted black hole. In addition to analyzing some properties of thus regularized space-time, including the Carter-Penrose diagrams, we show that this solution can be obtained from the Einstein equations with a source combining a phantom scalar field with a nonzero self-interaction potential and a nonlinear magnetic field. A similar kind of source is obtained for the cylindrical black bounce solution proposed by Lima et al. as a regularized version of Lemos's black string solution. Such sources are shown to be possible for a certain class of cylindrically, planarly and toroidally symmetric metrics that includes the regularized solutions under consideration.
arXiv comment14 pages, 9 figures. V2: Fixed misprints, some references added. Published in the PRD
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