Bell's Theorem and Locality in Space

Details Bell's Theorem and Locality in Space Bell's Theorem and Locality in Space

2000-12-01

arxiv.org/abs/quant-ph/0012010v1

Physics

Quantum Physics

7 pages, LaTex

Scientific paper

Bell's theorem states that some quantum correlations can not be represented by classical correlations of separated random variables. It has been interpreted as incompatibility of the requirement of locality with quantum mechanics. We point out that in fact the space part of the wave function was neglected in the proof of Bell's theorem. However this space part is crucial for considerations of property of locality of quantum system. Actually the space part leads to an extra factor in quantum correlations and as a result the ordinary proof of Bell's theorem fails in this case. We present a criterium of locality in a realist theory of hidden variables. It is argued that predictions of quantum mechanics for Gaussian wave functions can be consistent with Bell's inequalities and hence Einstein's local realism is restored in this case.

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