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Wigner's convoluted friends

Okon, Elias and Muciño, Ricardo (2020) Wigner's convoluted friends. [Preprint]


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Considering a complicated extension of a Wigner's friend scenario, Frauchiger and Renner (FR) allegedly showed that "quantum theory cannot consistently describe the use of itself". However, such a result has been under severe criticism, as it has been convincingly argued to crucially depend on an implicit, non-trivial assumption regarding details of the collapse mechanism. In consequence, the result is not as robust or general as intended. On top of all this, in this work we show that a much simpler arrangement--basically an EPR setting--is sufficient to derive a result fully analogous to that of FR. Moreover, we claim that all lessons learned from FR's result are essentially contained within the original EPR paper. We conclude that FR's result does not offer any novel insights into the conceptual problems of quantum theory.

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Item Type: Preprint
Keywords: Wigner's friend; No-go theorem; Frauchiger and Renner; EPR.
Subjects: Specific Sciences > Physics
Specific Sciences > Physics > Quantum Mechanics
Depositing User: Dr. Elias Okon
Date Deposited: 30 Jun 2020 02:08
Last Modified: 30 Jun 2020 02:08
Item ID: 17405
Subjects: Specific Sciences > Physics
Specific Sciences > Physics > Quantum Mechanics
Date: 29 June 2020

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