ARTICLE | doi:10.20944/preprints202205.0274.v3
Subject: Physical Sciences, General & Theoretical Physics Keywords: Bell inequality; locality; nonlocality; realism; counterfactual definiteness
Online: 17 August 2022 (11:43:24 CEST)
We present a pragmatic analysis of the different meanings assigned to the term "local realism'' in the context of the empirical violations of Bell-type inequalities since its inception in the late 1970s. We point out that most of them are inconsistent and arise from a deeply ingrained prejudice that originated in the celebrated 1935 paper by Einstein-Podolski-Rosen. We highlight the correct connotation that arises once we discard unnecessary metaphysics.
ARTICLE | doi:10.20944/preprints202205.0015.v2
Subject: Physical Sciences, General & Theoretical Physics Keywords: Bell inequality; locality; nonlocality; local causality
Online: 11 July 2022 (08:49:57 CEST)
The alleged nonlocal character of quantum mechanics is inextricably related to the formulation of the Bell theorem. However, as we shall see, that relation is commonly incorrectly assessed. The departure from the clear line of reasoning that John Bell tried to convey has led to a polarization of part of the scientific community into radical irreconcilable positions. We show how the correct appreciation of Bell's work calls for reinterpreting the usual significance given to the Bell theorem yielding a more rational perspective of the problem. Given the relevance of the Bell-type inequalities in quantum information technology and quantum foundations, further clarification of their relation to the nonlocality conundrum deserves due attention. The exposition is also of didactic value. It shows the problems arising from incorrect inferences and superfluous metaphysical ideas.