Implications of Local Friendliness Violation for Quantum Causality

Autor:	Eric G. Cavalcanti, Howard M. Wiseman
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	quantum foundations quantum causality causal models quantum causal models Wigner’s friend paradox experimental metaphysics Science Astrophysics QB460-466 Physics QC1-999
Zdroj:	Entropy, Vol 23, Iss 8, p 925 (2021)
Druh dokumentu:	article
ISSN:	1099-4300
DOI:	10.3390/e23080925
Popis:	We provide a new formulation of the Local Friendliness no-go theorem of Bong et al. [Nat. Phys. 16, 1199 (2020)] from fundamental causal principles, providing another perspective on how it puts strictly stronger bounds on quantum reality than Bell’s theorem. In particular, quantum causal models have been proposed as a way to maintain a peaceful coexistence between quantum mechanics and relativistic causality while respecting Leibniz’s methodological principle. This works for Bell’s theorem but does not work for the Local Friendliness no-go theorem, which considers an extended Wigner’s Friend scenario. More radical conceptual renewal is required; we suggest that cleaving to Leibniz’s principle requires extending relativity to events themselves.
Databáze:	Directory of Open Access Journals
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