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On an attempt to resolve the EPR-Bell paradox via Reichenbachian concept of common cause | Laszlo E. Szabo
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23 Jun 1998 | Subject: | Quantum Physics; Mathematical Physics; History of Physics; Popular Physics | quant-ph gr-qc hep-th math-ph math.MP physics.hist-ph physics.pop-ph | Affiliation: | Eotvos University, Budapest | Abstract: | Reichenbach’s Common Cause Principle claims that if there is correlation between two events and none of them is directly causally influenced by the other, then there must exist a third event that can, as a common cause, account for the correlation. The EPR-Bell paradox consists in the problem that we observe correlations between spatially separated events in the EPR-experiments, which do not admit common-cause-type explanation; and it must therefore be inevitably concluded, that, contrary to relativity theory, in the realm of quantum physics there exists action at a distance, or at least superluminal causal propagation is possible; that is, either relativity theory or Reichenbach’s common cause principle fails. By means of closer analyses of the concept of common cause and a more precise reformulation of the EPR experimental scenario, I will sharpen the conclusion we can draw from the violation of Bell’s inequalities. It will be explicitly shown that the correla-tions we encounter in the EPR experiment could have common causes; that is, Reichen-bach’s Common Cause Principle does not fail in quantum mechanics. Moreover, these common causes satisfy the locality conditions usually required. In the Revised Version of the paper I added a Postscript from which it turns out that the solution such obtained is, contrary to the original title, incomplete. It turns out that a new problem arises: some combinations of the common cause events do statistically cor-relate with the measurement operations. | Source: | arXiv, quant-ph/9806074 | Services: | Forum | Review | PDF | Favorites |
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