If Black Holes Evaporate, Everything Evaporates - by BrianKoberlein
The virtual particle visualization is appealing, but it isn’t without its problems. Hawking’s approach can lead to things such as the firewall paradox, where the region near a black hole event horizon should be both empty and ablaze with realized virtual particles. Without a fully quantum approach to gravity, we can’t resolve these paradoxes easily.There are, however, other semi-classical approaches to gravity than the one Hawking used.
This is where a new study comes in. For this work, the team looked at a different formulation of Hawking radiation, somewhat similar to the wavefunction approach. They found that when it comes to Hawking radiation, the event horizon of a black hole isn’t particularly special. Any concentrated mass, from neutron stars to pet rocks, has a gravitational well that acts like a finite container. So quantum particles can always escape.
This model doesn’t change our understanding of black holes, but it could have significant consequences for long-term cosmology. If everything disappears in a poof of radiation given enough time, then the universe will fade into a cold sea of radiation.
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