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> The problems start once you consider quantum mechanics, because any such singularity will break unitarity (a fancy way of saying that probabilities must add u
by kadoban 2mo ago
> The problems start once you consider quantum mechanics, because any such singularity will break unitarity (a fancy way of saying that probabilities must add up to 1), which means your theory as a whole can no longer make predictions.
How is this any different than classical? Isn't it still just an ~impossibility hidden behind an event horizon in either model?
- flavenstein 2mo agoWith our current understanding, baryon and lepton number are not conserved as a black hole radiates. I think this is a better demonstration of the incompatibility with classical and quantum mechanics.
- sigmoid10 2mo agoBaryon and lepton number conservation are what's called "accidental symmetries" in the standard models, meaning there is no real underlying symmetry that would conserve them. In fact many extensions of the Standard Model don't, while still retaining unitarity. The problems already start once you try to calculate any time evolution of anything, because the Hilbert operator not being unitary means that everything breaks. Even the total energy in a closed system might vanish or blow up to infinity. You can't calculate anything under these conditions.