Regular black holes with Minkowskian cores: energy-condition obstruction and optical screening
Abstract
We construct an asymptotically flat black-hole geometry with a Minkowskian core using gravitational decoupling and analyze its static and rotating extensions. Rather than imposing global energy-condition viability, we show that the vanishing central density required by the Minkowskian core produces a local null-energy-condition obstruction for the present static closure class. The exact mass profile can be written in terms of the regularized incomplete gamma function, which makes transparent both the horizon structure and the exponential localization of the deformation. This localization yields an analytic optical-screening mechanism: on the black-hole branch, deviations of the critical impact parameter from Schwarzschild are controlled by the exponentially suppressed mass deficit at the photon sphere. We also clarify the status of the rotating extension: curvature invariants remain finite on the physical domain r≥0, but this local statement does not by itself establish a globally regular analytic extension through the Kerr disk. These results separate local core regularization from global completeness and explain why strong modifications of the interior can coexist with very small changes in exterior optical observables.
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BibTeX
@misc{telloortiz2026regular,
title = {{Regular black holes with Minkowskian cores: energy-condition obstruction and optical screening}},
author = {Francisco Tello-Ortiz and Y. Gómez-Leyton and Alejandro Rueda and Kazuharu Bamba and Manuel González-Espinoza},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2607.10713},
eprint = {2607.10713},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.10713},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Regular black holes with Minkowskian cores: energy-condition obstruction and optical screening
AU - Francisco Tello-Ortiz
AU - Y. Gómez-Leyton
AU - Alejandro Rueda
AU - Kazuharu Bamba
AU - Manuel González-Espinoza
PY - 2026
DA - 2026/11/02
PB - arXiv
DO - 10.48550/arxiv.2607.10713
UR - https://arxiv.org/abs/2607.10713
AB - We construct an asymptotically flat black-hole geometry with a Minkowskian core using gravitational decoupling and analyze its static and rotating extensions. Rather than imposing global energy-condition viability, we show that the vanishing central density required by the Minkowskian core produces a local null-energy-condition obstruction for the present static closure class. The exact mass profile can be written in terms of the regularized incomplete gamma function, which makes transparent both the horizon structure and the exponential localization of the deformation. This localization yields an analytic optical-screening mechanism: on the black-hole branch, deviations of the critical impact parameter from Schwarzschild are controlled by the exponentially suppressed mass deficit at the photon sphere. We also clarify the status of the rotating extension: curvature invariants remain finite on the physical domain r≥0, but this local statement does not by itself establish a globally regular analytic extension through the Kerr disk. These results separate local core regularization from global completeness and explain why strong modifications of the interior can coexist with very small changes in exterior optical observables.
ER -