The increasing entropy of a black hole that evaporates by emitting Hawking radiation is at odds with the predictions of quantum mechanics. Juan Maldacena discusses the latest advances in solving this puzzle, known as the black hole information paradox.
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Maldacena, J. Black holes and quantum information. Nat Rev Phys 2, 123–125 (2020). https://doi.org/10.1038/s42254-019-0146-z
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DOI: https://doi.org/10.1038/s42254-019-0146-z
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