Timeline for Why quantum entanglement for a non-local object needs explanation?
Current License: CC BY-SA 4.0
8 events
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| Sep 15, 2023 at 3:40 | comment | added | Ken Wharton | Many people think that one is looking for some sort of "principle" to explain the quantum limit. Five proposed principles that aim to explain "why" are listed on the relevant wikipedia page, but I'm sure I've seen even more than that in the literature. en.wikipedia.org/wiki/… | |
| Sep 14, 2023 at 22:40 | comment | added | aystack | @KenWharton These questions are excellent and intriguing. In “Why would the particular non-local structures of quantum states not allow for these "supra-quantum" correlations?” What exactly does this why mean? I mean, like, according to Aristotle there are four possible answers to the question why en.wikipedia.org/wiki/Four_causes, the material cause (what it's made of), the formal cause (its arrangement), the efficient cause (how it comes into being), the final cause (its aim or purpose). I feel some further clarification along this line may facilitate its eventual actual resolution. | |
| Sep 4, 2023 at 15:27 | comment | added | VVM | @KenWharton I appreciate your comment on this related question: physics.stackexchange.com/questions/778879/… | |
| Aug 29, 2023 at 14:47 | comment | added | Ken Wharton | @flippiefanus: An N-particle wavefunction, as used in a multi-particle Schrodinger equation, looks like $\psi(\vec{x}_1,\vec{x}_2,...,\vec{x}_N,t)$. This is formally a function on 3N+1 dimensional configuration space, not 3+1D spacetime. True, the same sort of configuration space is used to describe states of knowledge in classical statistical mechanics, but the use of these functions in classical physics is to summarize a probability distribution over actual-space particle trajectories, $\vec{x}_1(t)$, $\vec{x}_2(t)$, etc., a move that's not possible in the usual quantum formalism. | |
| Aug 29, 2023 at 13:05 | comment | added | flippiefanus | Multi-particle wave functions ARE functions of space! | |
| Aug 28, 2023 at 16:48 | vote | accept | VVM | ||
| Aug 28, 2023 at 16:45 | comment | added | VVM | This is a very helpful overview, of the real problem with the non-local objects, and I'd say number 3 is the most puzzling one! | |
| Aug 28, 2023 at 16:02 | history | answered | Ken Wharton | CC BY-SA 4.0 |