An argument for ψ -ontology in terms of protective measurements

Citation data:

Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics, ISSN: 1355-2198, Vol: 52, Page: 198-202

Publication Year:
2015
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Repository URL:
http://philsci-archive.pitt.edu/id/eprint/11822
DOI:
10.1016/j.shpsb.2015.07.006
Author(s):
Gao, Shan
Publisher(s):
Elsevier BV
Tags:
Arts and Humanities, Physics and Astronomy
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article description
The ontological model framework provides a rigorous approach to address the question of whether the quantum state is ontic or epistemic. When considering only conventional projective measurements, auxiliary assumptions are always needed to prove the reality of the quantum state in the framework. For example, the Pusey–Barrett–Rudolph theorem is based on an additional preparation independence assumption. In this paper, we give a new proof of ψ -ontology in terms of protective measurements in the ontological model framework. The proof does not rely on auxiliary assumptions, and it also applies to deterministic theories such as the de Broglie–Bohm theory. In addition, we give a simpler argument for ψ -ontology beyond the framework, which is based on protective measurements and a weaker criterion of reality. The argument may be also appealing for those people who favor an anti-realist view of quantum mechanics.

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