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fanieh
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Demystifier said:
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Can the PBR Theorem Prove the Reality of Quantum States?
- Context: Undergrad
- Thread starter fanieh
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Discussion Overview
The discussion centers on the PBR theorem and its implications for the nature of quantum states, specifically whether they can be considered real physical entities or merely statistical tools. Participants explore the assumptions underlying the theorem, its relation to various interpretations of quantum mechanics, and the implications for hidden variable theories.
Discussion Character
- Debate/contested
- Technical explanation
- Conceptual clarification
Main Points Raised
- Some participants express skepticism about the claim that quantum states can communicate by action at a distance, suggesting that the Wikipedia entry may lack proper context.
- Others highlight that the PBR theorem relies on the assumption of a "real physical state," which may not be accepted by all interpretations of quantum theory, particularly instrumentalist views.
- There is a question regarding why the PBR theorem's assumptions only apply to isolated systems and not to entangled ones, with participants seeking clarification on this point.
- Some argue that the PBR theorem challenges the notion that quantum mechanics is purely statistical, asserting that it strengthens the de-Broglie-Bohm theory against other hidden variable theories.
- Participants discuss the implications of the PBR theorem for hidden variable theories, questioning whether the influence of the wavefunction on hidden variables is a necessary condition.
- Concerns are raised about the assumptions made in the proof of the PBR theorem, particularly regarding the introduction of hidden variables and whether this leads to a contradiction with epistemic interpretations of quantum states.
Areas of Agreement / Disagreement
Participants express a range of views on the implications of the PBR theorem, with no consensus reached on whether quantum states should be considered real or merely statistical tools. The discussion remains unresolved regarding the interpretations and implications of the theorem.
Contextual Notes
Participants note that the assumptions of the PBR theorem may not be universally accepted, particularly in relation to interpretations that reject the notion of a real physical state. The discussion also highlights the complexity of the relationship between quantum states and hidden variables, with several unresolved questions regarding their interaction.
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