Timeline for How can two bosons having mass be in the same place at the same time?
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| May 14, 2021 at 8:39 | comment | added | Deschele Schilder | @Koschi That's another matter. maybe there don't exist truly elementary particles (by which I don't mean strings). Maybe these non-point structures can be on top of each other (like small circles on a long very small long cylinder, where the cylinder represents spacetime and the circles represent the particles). | |
| May 14, 2021 at 8:34 | comment | added | Koschi | Thanks, but this is what I meant... it can collapse if it accretes mass from somewhere else. Still, it is widely accepted that the interior of the resulting black hole must be described by a quantum gravity, rendering the prediction of the singularity with all particles at one point debatable. | |
| May 14, 2021 at 8:30 | comment | added | Deschele Schilder | Look here; public.nrao.edu/ask/…. If a neutron star is massive enough it just collapses. When it has gathered enough mass from its neighborhood for example. The uncertainty principle must be circumvented if a black hole forms. When the degeneracy pressure has been overcome, the neutron star collapses. | |
| May 14, 2021 at 8:24 | comment | added | Koschi | Regarding the first point: I never heard about this. If there is no merger, for example with another neutron star, with enough resulting mass to form a black hole, the neutron star will not collapse... Do you have a reference that predicts this? Second: A black hole does NOT mean that all particles collapse to "a point". This is a prediction of general relativity, but almost everyone assumes that this is an incorrect description on a quantum level, leaving it to the unknown what happens behind the event horizon, especially about how a singularity is prevented by quantum gravity effects. | |
| May 14, 2021 at 7:52 | comment | added | Deschele Schilder | @Koschi A neutron star is held stable indeed because of the exclusion principle. But my point is that one day the neutron star will collapse, so the exclusion principle can be overcome. The particles constituting the neutron star (whatever they are) will end up at the same place, a point. So when this is possible for these particles (fermions) it can certainly be accomplished for bosons. | |
| May 14, 2021 at 7:44 | comment | added | Koschi | I don't think this answer helps. A neutron star is held STABLE by the exclusion principle, and overcoming this to collapse is an extreme event... Also, it is not easy to shoot electrons together to bring them "as close as you want"... A procedure we can only do in accelerators. I think it is debatable, in both cases (black holes, fundamental interactions at acc.), if the involved particles are really at the same spacetime point, while quantum mechanically being at the same space-time point is no problem for bosons, massive or not, without need for huge energies/extreme situations. | |
| May 14, 2021 at 7:24 | history | answered | Deschele Schilder | CC BY-SA 4.0 |