• Apustimelogist
    614


    I actually should add that my picture makes it look less weird than it is.

    Non-local correlations of particles also depend on measurement settings at the point the particle is measured, which are chosen by the experimenter or by some other random event.

    Superdeterminism would also mean not only that a common cause is affecting particle behavior but also the choice of measurement settings. If you chose the settings then that common cause is making you pick those settings. If you chose settings with a dice roll then the common cause is causing the outcome of the dice roll. If you chose settings by looking at the light patterns of quasars very far away and that originate from billions of years ago (because of how long it takes light to reach us) then the common cause is causing the behavior of those quasars billions of years ago.

    Bohmian mechanics just means simple communication between particles faster than light given the measurement settings.
  • flannel jesus
    1.8k
    It's similar in a way. Apustimelogist answered but I would change a bit of his answer: rather than saying Bohmian is faster-than-light communication, I would say it's "retrocausal". I guess in practice that's indistinguishable from faster-than-light.

    The similarity between Superdeterminism and Bohmian is that in both cases, the process producing the entangled particles somehow knows how the particles are going to be measured, and takes on the appropriate values (in aggregate) that Quantum Physics suggests. In Bohmian Mechanics, as I understand it, that's because the Wave Function is really real, it's just operating in a sort of retrocausal way. In superdeterminism... there is no explanation. Superdeterminism is basically saying "our experiments that prove Quantum Physics are wrong, but I can't tell you why they're wrong or how to fix the experiments. They just happen to be the exact right results to prove QM correct, but that's wrong, ignore your experiments and listen to me.".
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