3 ms·

https://www.quantamagazine.org/pilot-wave-theory-gains-experimental-support-20160516/ https://www.quantamagazine.org/pilot-wave-theory-gains-exper... "The univ

https://www.quantamagazine.org/pilot-wave-theory-gains-experimental-support-20160516/ https://www.quantamagazine.org/pilot-wave-theory-gains-exper... "The universe seems to like talking to itself faster than the speed of light,” said Steinberg. “I could understand a universe where nothing can go faster than light, but a universe where the internal workings operate faster than light, and yet we’re forbidden from ever making use of that at the macroscopic level — it’s very hard to understand.” This can only lead to one conclusion: the Universe is a computer program. We can observe some of the side effects of the underlying computer, but we cannot use it from inside the simulation.

ben_w 8y ago
That sounds like a hidden variable model. I think those have been ruled out. I don’t grok the why yet, though.
- akvadrako 8y ago
  It is a hidden variable model, but by construction it reproduces all the results of orthodox QM given certain reasonable starting conditions. What's ruled out are local hidden variable models if you assume counterfactual definitiveness. The website is crazy, but the best page explaining why is here: http://quantumtantra.com/bell2.html http://quantumtantra.com/bell2.html
  - smaddox 8y ago
    And if you assume standard probability theory holds. If you allow for so called Exotic Probability, then local hidden variable theories are not ruled out. See [1] for a list of relevant literature. [1] http://physics.bu.edu/~youssef/quantum/quantum_refs.html http://physics.bu.edu/~youssef/quantum/quantum_refs.html
- chriswarbo 8y ago
  Local hidden variables have been ruled out, notably by experiments with Bell's inequality. This means that quantum effects cannot be caused by some unseen property of the objects involved (e.g. if particles had some extra 'charge' we didn't know about). The effects could be caused by some unseen "non-local" property, e.g. some property of space itself which propagates faster than light. A nice example is to model spacetime as a network (e.g. http://www.wolframscience.com/nks/p475--space-as-a-network http://www.wolframscience.com/nks/p475--space-as-a-network ) with information/causality propagating along edges in the network. If most of the edges are short, and form a 3D lattice, we'd get the universe we're familiar with. We can then model quantum phenomena, like entanglement, by introducing some long edges, connecting regions of the network which would otherwise be far apart (the entangled particles). Since there are so many possible non-local theories, with no way to distinguish between them, Physicists tend to prefer quantum descriptions of local, observable properties, since that seems like less of a leap of faith.
AnimalMuppet 8y ago
Um, no, it does not only lead to one conclusion, especially not that one.

ben_w 8y ago

That sounds like a hidden variable model. I think those have been ruled out. I don’t grok the why yet, though.

akvadrako 8y ago
It is a hidden variable model, but by construction it reproduces all the results of orthodox QM given certain reasonable starting conditions. What's ruled out are local hidden variable models if you assume counterfactual definitiveness. The website is crazy, but the best page explaining why is here: http://quantumtantra.com/bell2.html http://quantumtantra.com/bell2.html
- smaddox 8y ago
  And if you assume standard probability theory holds. If you allow for so called Exotic Probability, then local hidden variable theories are not ruled out. See [1] for a list of relevant literature. [1] http://physics.bu.edu/~youssef/quantum/quantum_refs.html http://physics.bu.edu/~youssef/quantum/quantum_refs.html
chriswarbo 8y ago
Local hidden variables have been ruled out, notably by experiments with Bell's inequality. This means that quantum effects cannot be caused by some unseen property of the objects involved (e.g. if particles had some extra 'charge' we didn't know about). The effects could be caused by some unseen "non-local" property, e.g. some property of space itself which propagates faster than light. A nice example is to model spacetime as a network (e.g. http://www.wolframscience.com/nks/p475--space-as-a-network http://www.wolframscience.com/nks/p475--space-as-a-network ) with information/causality propagating along edges in the network. If most of the edges are short, and form a 3D lattice, we'd get the universe we're familiar with. We can then model quantum phenomena, like entanglement, by introducing some long edges, connecting regions of the network which would otherwise be far apart (the entangled particles). Since there are so many possible non-local theories, with no way to distinguish between them, Physicists tend to prefer quantum descriptions of local, observable properties, since that seems like less of a leap of faith.

AnimalMuppet 8y ago

Um, no, it does not only lead to one conclusion, especially not that one.