Nonlocality and Peaceful Coexistence

  • Michael Redhead
Part of the Synthese Library book series (SYLI, volume 157)


The object of the present paper is to investigate the putative tension between the requirements of causality and special relativity (SR) on the one hand and the quantum-mechanical (QM) description of the Einstein-Podolsky-Rosen (EPR) thought experiment on the other. A preliminary formulation of the situation is that the EPR phenomenon involves an instantaneous propagation of a physical effect between two spatially separated systems which contradicts the requirements of SR, and moreover would lead to backward causation in appropriately moving reference frames. We will try to unravel this state of affairs in two stages. First we shall ask in what sense, if any, the transmission of a physical effect is involved in the EPR type of experiment and secondly whether SR definitively rules out such a possibility.


Physical Review Invariance Principle Bell Inequality Causal Theory Mesh Condition 
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© D. Reidel Publishing Company 1983

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  • Michael Redhead

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