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A critical appraisal of the singularity theorems
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The 2020 Nobel prize in Physics has revived the interest in the singularity theorems and, in particular, in the Penrose theorem published in 1965. In this short paper I briefly review the main ideas behind the theorems and then proceed to an evaluation of their hypotheses and implications. I will try to dispel some common misconceptions about the theorems and their conclusions, as well as to convey some of their rarely mentioned consequences. In particular, a discussion of spacetime extensions in relation to the theorems is provided. The nature of the singularity inside black holes is also analyzed.
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Cited by 1 Pith paper
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Radiative properties of a nonsingular black hole: Hawking radiation and gray-body factor
A singularity-free black hole radiates more coldly and more like a perfect black body than Schwarzschild does, and, on one assumption about its parameters, it ends as a zero-temperature remnant instead of evaporating.
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