> Il 20 ottobre 2019 alle 17.57 smitra < [email protected] > mailto:[email protected] > ha scritto: > > Yes, Bruce is right on this point of the interference being detectable > after the photons hitting the screen by transferring the which way > information to the spins of electrons. But John Clark is right about the > main topic this discussion is about. One can construe that also in terms > of realism (I think John did mention this also some tome ago). The > traditional view is that we must abandon realism, but that leads to > paradoxes as it's problematic to then get to realism at the macroscopic > level. In principle the macroscopic world is also described by QM, and > any formalism that assumes non-realism would have to apply there at > well. The MWI solves this problem in a much better way by explaining > non-realism as an artifact of Many-World realism. The different > realities in the different Worlds makes the notion of single World > realism false. > > > Saibal >
"The experimental results demonstrate the possibility of observing both particle-like and wave-like behavior of a light quantum via quantum mechanical entanglement. The which-path or both-path information of a quantum can be erased or marked by its entangled twin even after the registration of the quantum." https://arxiv.org/abs/quant-ph/9903047 As for "realism" I think we need a definition. What is "real"? (Yes, I know the EPR definition.) s. “The probability function, which covered a wide range of possibilities, is suddenly reduced to a much narrower range by the fact that the experiment has led to a definite result, that actually a certain event has happened. In the formalism this reduction requires that the so-called interference of probabilities, which is the most characteristic phenomenon of quantum theory, is destroyed by the partly undefinable and irreversible interactions of the system with the measuring apparatus and the rest of the world.” (Heisenberg, 1958) -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/1975278201.1206417.1571592568922%40mail1.libero.it.
