Timeline for What is the explanation for the interference patterns in MWI?
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| May 12, 2016 at 23:54 | comment | added | Bonj | Let us continue this discussion in chat. | |
| May 12, 2016 at 16:53 | comment | added | Luboš Motl | Dear Bonj, you toss a die and get 1. You ask why 1. MWI folks say that there are also other worlds with a copy of you who got 2, and he's asking the same question. The copy with "1" is just a random copy but all others exist. So no randomness is used by the laws of physics - it's just a psychological ignorance of you about your location. - If you think that in this setup, the values of probabilities can't be "explained" in any way, I agree with you. MWI advocates would add an incoherent rant with references to incoherent or circular preprints but I won't do that. ;-) | |
| May 12, 2016 at 16:20 | comment | added | Bonj | Understood, thanks. And one last thing. If not all the "worlds" are equally real, then surely randomness or hidden variables must be introduced to explain why some worlds are more real than others? Or if our world is the only real world and we are merely navigating our way through the universal wave-function, to explain why our world is the real world given the potential that it would not have been. | |
| May 12, 2016 at 15:18 | comment | added | Luboš Motl | By determinism, MWI advocates mean that the wave function evolves according to the deterministic Schrödinger equation and there's "nothing else". In standard QM, the measurement is when the randomness enters. In MWI, the idea is that the randomness never enters. Instead, all the possible outcomes of a measurement exist simultaneously, and you find yourself in one of them - one of the parallel Universes. The more probable "worlds" should be more likely to be "yours" than the less probable ones. MWI cannot really explain how it's possible if all the "worlds" are equally real. But they don't care | |
| May 12, 2016 at 14:32 | comment | added | Bonj | Okay, thanks, your answer makes more sense now. I still don't fully understand how there is no contradiction between having many worlds and determinism. Is it because of the degrees of freedom? | |
| May 12, 2016 at 14:04 | comment | added | Luboš Motl | I tried to label the key words in bold face and added a paragraph to address some additional question I first overlooked. | |
| May 12, 2016 at 14:03 | history | edited | Luboš Motl | CC BY-SA 3.0 |
added 375 characters in body
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| May 12, 2016 at 13:33 | comment | added | Bonj | But how does this relate to my quetsions? | |
| May 12, 2016 at 13:18 | history | answered | Luboš Motl | CC BY-SA 3.0 |