Getting rid of nonlocality from quantum physics

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SUMMARY

The forum discussion centers on the local nature of quantum theory, specifically addressing Einstein's critique of the Copenhagen interpretation and the concept of "spooky action at a distance." It distinguishes between two forms of nonlocality: Lüd ers nonlocality, which arises from the projection postulate, and Bell nonlocality, which challenges local hidden-variable theories. The Växjö interpretation is highlighted as an epistemological approach that emphasizes the role of experimental context without asserting an ontological stance. The discussion concludes that quantum mechanics is fundamentally probabilistic, with observable facts being the primary concern for physicists.

PREREQUISITES
  • Understanding of the Copenhagen interpretation of quantum mechanics
  • Familiarity with Lüd ers and Bell nonlocality concepts
  • Knowledge of the Växjö interpretation of quantum mechanics
  • Basic grasp of quantum field theory (QFT) and its local interactions
NEXT STEPS
  • Explore the implications of the Bell theorem on local hidden-variable models
  • Study the differences between Lüd ers and Bell nonlocality in quantum mechanics
  • Investigate the role of contextuality in the Växjö interpretation
  • Learn about the probabilistic nature of quantum mechanics and its implications for determinism
USEFUL FOR

Physicists, quantum theorists, and students of quantum mechanics seeking to deepen their understanding of nonlocality, interpretations of quantum theory, and the philosophical implications of quantum mechanics.

  • #121
@PeroK

I merely want to point out that everyone has a story which is influenced by personal ideological beliefs. That's why I - as a working physicist - adopt an instrumentalist's point of view.
My personal story could be, for example: The mind is fundamental and the objects only exist as illusions in my mind. Neither your story nor my story can be proved or disproved by means of the scientific method.
 
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  • #122
Lord Jestocost said:
@PeroK

I merely want to point out that everyone has a story which is influenced by personal ideological beliefs. That's why I - as a working physicist - adopt an instrumentalist's point of view.
My personal story could be, for example: The mind is fundamental and the objects only exist as illusions in my mind. Neither your story nor my story can be proved or disproved by means of the scientific method.
This is why I rarely reply to posts in this sub-forum.

Whenever anyone is confronted with a hard question, they can retreat into an argument barely discernible from Zen Buddhism!

It seems to me a huge unnecessary burden on orthodox QM to explain how specific things (things with specific properties) come into existence, as opposed to other things with other properties. The simplest explanation is that something with the specific properties exists and measurements are compatible with that thing and those properties.

Explaining how properties can be not well-defined until measurement is bad enough. But, that the thing itself comes in and out of existence is asking too much, for no theoretical benefit that I can see.
 
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  • #123
Lord Jestocost said:
@PeroK

I merely want to point out that everyone has a story which is influenced by personal ideological beliefs. That's why I - as a working physicist - adopt an instrumentalist's point of view.
My personal story could be, for example: The mind is fundamental and the objects only exist as illusions in my mind. Neither your story nor my story can be proved or disproved by means of the scientific method.
Read Becker’s book https://www.google.com/books/edition/What_Is_Real/X4QqDwAAQBAJ?hl=en&gbpv=1&printsec=frontcover He makes a good case for the relevance of going beyond instrumentalism.
 
  • #124
The OP appears to be gone and the discussion seems to have covered every possible viewpoint. Thread closed.
 
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