A No-Go Result for QBism

Foundations of Physics 51 (5):1-6 (2021)
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Abstract

In QBism the wave function does not represent an element of physical reality external to the agent, but represent an agent’s personal probability assignments, reflecting his subjective degrees of belief about the future content of his experience. In this paper, I argue that this view of the wave function is not consistent with protective measurements. The argument does not rely on the realist assumption of the ψ-ontology theorems, namely the existence of the underlying ontic state of a quantum system.

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Shan Gao
Shanxi University

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References found in this work

Subjective probability and quantum certainty.Carlton M. Caves, Christopher A. Fuchs & Rüdiger Schack - 2007 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 38 (2):255-274.
Quantum bayesianism: A study.Christopher Gordon Timpson - 2008 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 39 (3):579-609.
Quantum Bayesianism Assessed.John Earman - unknown - The Monist 102 (4):403-423.
Protective Measurements and the Reality of the Wave Function.Shan Gao - 2022 - British Journal for the Philosophy of Science 73 (3):777-794.

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