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Article

Quantum Measurements with, and Yet without an Observer

1
Departmento de Química-Física, Universidad del País Vasco, UPV/EHU, 48940 Leioa, Bizkaia, Spain
2
IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Bizkaia, Spain
Received: 26 September 2020 / Revised: 15 October 2020 / Accepted: 18 October 2020 / Published: 21 October 2020
(This article belongs to the Special Issue Quantum Probability and Randomness II)
It is argued that Feynman’s rules for evaluating probabilities, combined with von Neumann’s principle of psycho-physical parallelism, help avoid inconsistencies, often associated with quantum theory. The former allows one to assign probabilities to entire sequences of hypothetical Observers’ experiences, without mentioning the problem of wave function collapse. The latter limits the Observer’s (e.g., Wigner’s friend’s) participation in a measurement to the changes produced in material objects, thus leaving his/her consciousness outside the picture. View Full-Text
Keywords: quantum mechanics; quantum measurements; quantum interference; Feynman’s paths; Wigner’s friend problem quantum mechanics; quantum measurements; quantum interference; Feynman’s paths; Wigner’s friend problem
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MDPI and ACS Style

Sokolovski, D. Quantum Measurements with, and Yet without an Observer. Entropy 2020, 22, 1185. https://0-doi-org.brum.beds.ac.uk/10.3390/e22101185

AMA Style

Sokolovski D. Quantum Measurements with, and Yet without an Observer. Entropy. 2020; 22(10):1185. https://0-doi-org.brum.beds.ac.uk/10.3390/e22101185

Chicago/Turabian Style

Sokolovski, Dmitri. 2020. "Quantum Measurements with, and Yet without an Observer" Entropy 22, no. 10: 1185. https://0-doi-org.brum.beds.ac.uk/10.3390/e22101185

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