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arXiv:2010.14303 · Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences

A local-realistic model for quantum theory

Paul Raymond-Robichaud

Published Jun 1, 2021• 18 citations
arXivHTMLPDF

Abstract

We provide a rigorous definition of local realism. We show that the universal wave function cannot be a complete description of a local reality. Finally, we construct a local-realistic model for quantum theory.
DOI
10.1098/rspa.2020.0897

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The concept of "reality" is often raised in the context of philosophical foundations of physics or interpretations of quantum mechanics. When this term is so raised, it is a warning to me that I am about to be led down a rabbit hole. Such diversions usually lead nowhere unless you consider endless discussions of Schrodinger's cat, wave function collapse, quantum non-locality, and parallel universes to be useful. A prime example is the famous Einstein, Podolsky, and Rosen paper wherein they concluded that the quantum wave function cannot provide a complete description of physical reality. In this essay I suggest that, in physics discourse, the term "reality" should be avoided at all costs.
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In the Einstein-Bohr debate, Einstein considered quantum mechanics incomplete and disagreed with Born's probabilistic interpretation of wave-functions. Observers in the axioms of the theory also bothered Einstein. Inspired by Einstein, Bell and his followers intended to complete quantum mechanics within the framework of local realism. Regrettably, the deterministic correlation between distant components of a separable system in Einstein's local-realist description of the world is mistaken for non-locality in the world described by Bell's theorem, which interprets the experimental results of testing Bell inequalities incorrectly. This article introduces a new principle, the general principle of measurements, which is proved as a mathematical theorem, allowing quantum mechanics to be completed within the framework of local realism while keeping the definition of a general Hilbert space unchanged. Using disjunction (``or'') as the logical relation between superposed orthonormal vectors, the completed quantum theory provides the same probabilistic predictions of empirical results as those provided by the current version of the theory, precludes inexplicable collapses of wave-functions, eliminates observers from the axioms of quantum mechanics, and is intuitively comprehensible, thus alleviating much difficulty experienced by many people in understanding the theory in its present form. Among various world views, Einstein's local-realist world view is correct.