/sci/ - Science & Math

>>11553110
Recall that blacholes are punctures/singularities in spacetime, hence as it disappears we would observe "object's clock" slowly begin to tick again, at least classically speaking. This then begs the question "is this object the same as the one falling in?"
However, blackhole evaporation is a quantum effect, hence in your scenario there is really no sense to talk about classical "objects". The above question, when phrased in terms of quantum states, is related to the blackhole information paradox: the mechanism of blackhole evaporation, i.e. Hawking radiation, seems to disentangle pair-created quantum states and "absorb" entropy/information. If it does, then it will not conserve quantum states falling into it, by which point there would be no sense for us to discuss "what happens to [math]the[/math] quantum state after blackhole evaporates" unless we know how the disentanglement occurs (namely find the source of the information loss and effectively solve the blackhole information paradox), since it gets scrambled beyond recognition as soon as it enters the event horizon.
Now there are proposed resolutions to this, a personal favourite of which is the "fuzzball" (https://arxiv.org/abs/1812.11641)), which details how the initial quantum state couples to the "stringy" mess around the event horizon, effectively siphoning information out to elsewhere. If this were actually true, then objects near the event horizon would be disintegrated qubit by qubit into other parts of the universe. It may or may not be sensible [math]then[/math] to pose your questions.

>>11417680
Nope. Where I went (OIST) had fully-funded PhD positions that do not require you to teach; and even if you had to the classes were held in English, at least officially. Most of the students/faculties weren't Japanese either.
It certainly helps if you knew Japanese but it'd only be required when ordering food.