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arXiv:2211.02884 · International Journal of Quantum Information

Can quantum nonlocality be connected to extra dimensions?

Marco Genovese

Published Dec 20, 2022• 10 citations
arXivHTMLPDF

Abstract

Quantum nonlocality, as described by Einstein–Podolsky–Rosen (EPR) paradox, represents one of the mysteries at the very foundations of quantum mechanics. Here, we suggest to investigate if it can be understood by considering extra dimensions.
DOI
10.1142/s0219749923400038

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Abstract Einstein's severe critique of quantum mechanics took its ultimate form in the so‐called Einstein Podolsky Rosen (EPR) paradox. The latter remained a subject of mere dispute, until a remarkable progress was initiated in 1964 by Bell who showed that quantum mechanical correlations specific for an EPR type experiment cannot be reproduced in any local hidden—variables theory. Afterwards, realistic versions of EPR experiments have been conceived and, in fact, carried out. The objective of the present paper is to give a review of this recent exciting development, both theoretical and experimental, which reveals one of the most striking features of quantum theory, the “quantum interconnectedness of distant systems”.
The phenomenon of nonlocality in quantum mechanics is one of its most fundamental features and is most strikingly exemplified in the discussion of the Einstein, Podolsky and Rosen (EPR) type of experiment. The generality of Bell's inequality and the results of experiments done up to now show that local hidden-variable theories are ruled out as a means to resolve the famous EPR paradox. What remains for further consideration are the nonlocal and the Einstein-separable hidden-variable models. Finally, an alternative and possibly successful approach in trying to 'explain' nonlocality might involve ideas of backward causation.