What interpretations break causality instead of locality?

In summary, Bell's theorem states that an interpretation of quantum mechanics must break either locality or causality. The only known interpretation that chooses to maintain locality is the causally symmetric Bohm model. Other local approaches include the Copenhagen interpretation, many worlds, superdeterminism, backward causation, noncommutative hidden variables, and solipsistic hidden variables. Additional theories that explore time-symmetry in quantum mechanics include Cramer's Generalized absorber theory and Relational Blockworld.
  • #1
thenewmans
168
1
By Bell’s theorem, an interpretation of QM must break either locality or causality. Linked below is the only interpretation I know of that chooses to maintain locality. (I don't know many.) Do you know of any others?

CAUSALLY SYMMETRIC BOHM MODEL
http://arxiv.org/ftp/quant-ph/papers/0601/0601095.pdf
 
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  • #2
For a list of local approaches see
https://www.physicsforums.com/blog.php?b=3622
 
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  • #3
Demystifier said:
For a list of local approaches see
https://www.physicsforums.com/blog.php?b=3622
Cool. Thanks.

  • Copenhagen - Copenhagen is local? I didn't know that.
  • many worlds - Many worlds is local? I didn't know that either.
  • superdeterminism - Sounds crazy but I'll read this http://en.wikipedia.org/wiki/Superdeterminism
  • backward causation - I assume the causally symmetric Bohm model counts as one of these. Otherwise I can't find this interpretation.
  • noncommutative hidden variables - I hear Joy Christian is a crackpot Bell denier.
  • Your solipsistic hidden variables - Cool. I'll have to read this one ... if I can
 
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  • #4
Cramer's Generalized absorber theory and the Einstein-Podolsky-Rosen paradox:

http://www.npl.washington.edu/npl/int_rep/gat_80/

-----

New Insights on Time-Symmetry in Quantum Mechanics
by Yakir Aharonov, Jeff Tollaksen

http://arxiv.org/abs/0706.1232

-----

Relational Blockworld: Towards a Discrete Graph Theoretic Foundation of Quantum Mechanics
by W.M. Stuckey, Timothy McDevitt, Michael Silberstein

http://arxiv.org/abs/0903.2642
 
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Related to What interpretations break causality instead of locality?

1. What is the difference between causality and locality?

Causality refers to the concept that an event can only be caused by a prior event. Locality, on the other hand, refers to the idea that events can only be influenced by other events within their immediate vicinity or region.

2. How do interpretations break causality?

Interpretations can break causality by suggesting that an event can occur without a prior cause, or that an event can be influenced by events outside of its immediate vicinity. This goes against the fundamental principles of causality.

3. Can causality and locality ever be broken simultaneously?

No, causality and locality are closely connected and breaking one would inevitably lead to breaking the other. If an interpretation breaks causality, it would also break locality.

4. How can we determine if an interpretation breaks causality or locality?

This can be determined through experiments and observations. If an interpretation predicts events that cannot be explained by causality or locality, it can be considered as breaking these principles.

5. Are there any interpretations that do not break causality or locality?

Yes, there are interpretations that are consistent with both causality and locality. The most widely accepted interpretation is the Copenhagen interpretation of quantum mechanics, which does not violate these principles.

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