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- When the entangled particles are measured (for their spin) in the same direction by two different spatially separated detectors, won't the predictions of a local theory without hidden variables contradict standard QM?
Consider a pair of entangled particles described by a local theory without hidden variables. Because there are no hidden variables, the results of an experiment on one particle of the entangled pair must be perfectly random. Due to locality, the particles also have no way of coordinating the results of the experiment.
When the entangled particles are measured (for their spin) in the same direction by two different spatially separated detectors, won't the predictions of a local theory without hidden variables contradict standard QM? If one of the particles is measured up, there's no reason for the other particle to be measured down if there are no hidden variables, if there is no way for the two particles to communicate and if the results of each experiment is perfectly random.
Prediction of local theory without hidden variables: the measurement results of the two particles are independent and are anti-correlated 50% of the time.
Prediction of standard quantum mechanics: the measurement results of the two particles are perfectly anti-correlated 100% of the time.
So, my question is: Aren't local theories without hidden variables inconsistent with experimental results? Aren't local no-hidden-variable theories just as false as local hidden variable theories (as proven by Bell)? Why do people stay away from hidden variable theories if no-hidden-variable theories are also just as bad at predicting QM? If local no-hidden-variable theories and local hidden variable theories are both wrong, doesn't the issue then lie with locality? Why does everyone keep saying that local hidden variables have been disproved, but no one seems to assert that local no-hidden-variable theories are also wrong? Is there something wrong with my analysis?
When the entangled particles are measured (for their spin) in the same direction by two different spatially separated detectors, won't the predictions of a local theory without hidden variables contradict standard QM? If one of the particles is measured up, there's no reason for the other particle to be measured down if there are no hidden variables, if there is no way for the two particles to communicate and if the results of each experiment is perfectly random.
Prediction of local theory without hidden variables: the measurement results of the two particles are independent and are anti-correlated 50% of the time.
Prediction of standard quantum mechanics: the measurement results of the two particles are perfectly anti-correlated 100% of the time.
So, my question is: Aren't local theories without hidden variables inconsistent with experimental results? Aren't local no-hidden-variable theories just as false as local hidden variable theories (as proven by Bell)? Why do people stay away from hidden variable theories if no-hidden-variable theories are also just as bad at predicting QM? If local no-hidden-variable theories and local hidden variable theories are both wrong, doesn't the issue then lie with locality? Why does everyone keep saying that local hidden variables have been disproved, but no one seems to assert that local no-hidden-variable theories are also wrong? Is there something wrong with my analysis?