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Sunday, May 06, 2007

Nonlocal; QM or classical physics?

While it is the general belief from the EPRB experiment that quantum mechanics gives that spatially separated objects exhibit correlations, it is wrong. It violates an uncertainty principle (number-phase). Quantum mechanics is a statistical theory. It cannot be applied to a single event, thus the argument is not relevant to quantum mechanics. What that argument shows is that classical physics is nonlocal. Consider a spherical shell which explodes into two objects spinning in (of course) opposite directions. When the spin direction of one is measured that of the other is forced into the opposite direction, even though it is now in a different galaxy. Hence those who say that the argument shows quantum mechanics is nonlocal are actually saying that classical physics is nonlocal. See the QM,QFT book for detailed discussions.

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