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Action and Passion at a Distance

Popescu, Sandu; Rohrlich, Daniel


Keyword(s):quantum mechanics; quantum non-locality

Abstract:Quantum mechanics permits nonlocality - both nonlocal correlations and nonlocal equations of motion - while respecting relativistic causality. Is quantum mechanics the unique theory that reconciles nonlocality and causality? We consider two models, going beyond quantum mechanics, of nonlocality - "superquantum" correlations, and nonlocal "jamming" of correlations - and derive new results for the jamming model. In one space dimension, jamming allows reversal of the sequence of cause and effect: in higher dimensions, however, effect never precedes cause. Notes:Sandu Popescu, Department of Physics, Boston University, Boston, MA 02215, USA. Daniel Rohrlich, School of Physics and Astronomy, Tel-Aviv University, Ramat-Aviv 69978 Tel-Aviv, Israel

16 Pages

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