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Timeline for How can there be a naked singularity in the Reissner-Nordström (RN) geometry? [duplicate]

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Jun 12, 2023 at 15:57 comment added FlatterMann Let us continue this discussion in chat.
Jun 12, 2023 at 15:56 comment added Zo the Relativist @FlatterMann and modern QFT theory is not really Copenhagen, and supercedes classical QM
Jun 12, 2023 at 15:43 comment added FlatterMann @ZotheRelativist Please take a close look at Copenhagen. It doesn't talk, at all, about point particles. It talks about physical systems and the probability of irreversible energy transfer. If you want we can take this to chat. It's not appropriate in the comment section.
Jun 12, 2023 at 15:40 comment added Zo the Relativist @FlatterMann it's a delta function in the propogator. It's a point particle in the theory. A quantum point particle, but a point particle nonetheless.
Jun 12, 2023 at 15:29 vote accept silviozzo
Jun 12, 2023 at 15:29 comment added FlatterMann @ZotheRelativist I have never seen a localized electron. It doesn't show up in experiments and it doesn't exist in the theory. It does only exist in a very poorly conceived semi-classical mental model that people typically acquire in school when they are being shown pictures of electrons as little blue balls. That's a total failure of our education system, I give you that.
Jun 12, 2023 at 14:38 comment added Zo the Relativist @FlatterMann: it's a localized collection of those things, and is treated as a point particle in standard QFT. that would be the GR generalization of the object. And obviously, you cannot create mascroscropic amalgams of electrons stably, because of electrostatic repulsion
Jun 12, 2023 at 1:20 comment added FlatterMann @ZotheRelativist I don't treat an electron as a point particle, ever. I treat it as a combination of energy, momentum, angular momentum and charge, because that is what it "is". If we assume that a black hole with a (large) multiple of these quantities can exist (a purely leptonic black hole), does it become a naked singularity? If it doesn't, then the question can be answered fairly trivially... assuming that these quantities are conserved. If they are not, then absolutely nothing can be said about black holes.
Jun 12, 2023 at 1:15 comment added Zo the Relativist @FlatterMann: that's my whole point. If you treat an electron as a point particle in general relativity, then it is a naked singularity. You don't need many electrons. A single electron is a naked singularity.
Jun 11, 2023 at 12:57 history left closed in review Miyase
Roger V.
ZeroTheHero 		Original close reason(s) were not resolved
Jun 11, 2023 at 6:02 history edited Qmechanic♦ CC BY-SA 4.0
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Jun 11, 2023 at 5:33 comment added FlatterMann @ZotheRelativist General relativity has nothing to say about matter and in quantum field theory an electron is merely an amount of energy, momentum, angular momentum and charge. The reason why it "exists" is because in weak gravitational fields these quantities are conserved. We do not know if they are conserved in strong gravity (based on the fact that the universe as a whole is not energy conserving we can probably guess that they are not, which makes any speculation about the innards of black holes pretty useless). Having said that, my question stands. If electrons can't do it...
Jun 11, 2023 at 5:30 comment added Zo the Relativist @FlatterMann: if you treat an electron as a point particle in general relativity, and assume there is no special quantum magic to save you, then the electron is a naked singularity
Jun 11, 2023 at 4:50 review Reopen votes
Jun 11, 2023 at 12:57
Jun 11, 2023 at 4:50 comment added benrg @JohnRennie I don't think this is a duplicate of that question.
S Jun 11, 2023 at 4:09 history closed John Rennie black-holes Duplicate of Physical interpretation of the Reissner-Nordström metric
S Jun 11, 2023 at 4:09 comment added John Rennie Does this answer your question? Physical interpretation of the Reissner-Nordstrom metric
Jun 11, 2023 at 3:32 history edited Qmechanic♦
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Jun 11, 2023 at 2:59 history edited Qmechanic♦
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Jun 11, 2023 at 2:48 comment added FlatterMann What happens if you actually insert real numbers? The lowest mass black hole with the largest possible charge would be made of nothing but electrons for all I can tell. Would this black hole be a naked singularity? (Neglect for a moment that this is not a stable state of the vacuum and that tons of other "particles" would pop up very quickly if we actually tried to build such a black hole in an accelerator.).
Jun 10, 2023 at 23:22 answer added Zo the Relativist timeline score: 1
Jun 10, 2023 at 23:12 history asked silviozzo CC BY-SA 4.0
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