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Feb 25, 2025 at 20:23 comment added Steve @Syed, yes I think existing experiments probably have presupposed the speed of light being either at, or within some margin of, its current assumed level, and that nothing moves faster. Beyond that margin, proofs against local realism would fall away. Although with entanglement, the fact that two local variables, perhaps at great distance, would be supposed to have a special connection and to respond in sympathy to one another, does already somewhat undermine the general idea of each variable having "locality" - it's difficult to see what advantage such an explanation has over the non-local.
Feb 25, 2025 at 12:39 comment added Syed “Locality” was only disproved in the at or slower than light sense. I don’t think there is any definitive proof that signals are not transferring or propagating between particles faster than light. No-go theorems “prove” this but they are arguably circular since they assume relativity and local Hamiltonian dynamics which is the very issue at hand. (FTL signals break relativity). See here: arxiv.org/abs/quant-ph/9906036
Dec 22, 2024 at 15:14 comment added Philomath That Nobel prize was long overdue. Alain Aspect's experiment was done in 1982, then there were still some theoretical loopholes, but in 1998 that was conclusively solved. Nobel prize was only awarded in 2022...
Dec 22, 2024 at 14:17 history answered Steve CC BY-SA 4.0