arXiv:2405.02389gr-qc
We show that it is not possible to concentrate enough light to precipitate the formation of an event horizon. We argue that the dissipative quantum effects coming from the self-interaction of light (such as vacuum polarization) are enough to prevent any meaningful buildup of energy that could create a black hole in any realistic scenario.
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Here's a link to the paper in question: https://arxiv.org/pdf/2405.02389 It seems pretty cut and dry, insofar as these things can be. There are established processes that cause the spontaneous creation of particle pairs in sufficiently energetic electric fields, and an analogous…
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There’s a recent paper on the formation of such a “kugelblitz”; it’s argued to be unfeasible. https://arxiv.org/abs/2405.02389
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