Are Bell-tests only about local incompatibility?

• URL: http://arxiv.org/abs/2006.08607v2
• Date: Mon, 29 Jun 2020 18:02:28 GMT
• Title: Are Bell-tests only about local incompatibility?
• Authors: Diederik Aerts and Massimiliano Sassoli de Bianchi
• Abstract summary: Quantum non-locality remains a necessary concept to properly interpret the outcomes of certain joint quantum measurements. Bell-tests would only be about local incompatibility of quantum observables and quantum non-locality would be an unnecessary concept in physics.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The view exists that Bell-tests would only be about local incompatibility of quantum observables and that quantum non-locality would be an unnecessary concept in physics. In this note, we emphasize that it is not incompatibility at the local level that is important for the violation of Bell-CHSH inequality, but incompatibility at the non-local level of the joint measurements. Hence, non-locality remains a necessary concept to properly interpret the outcomes of certain joint quantum measurements.

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