The inconsistency of quantum nonlocality

In summary, there is a scientific consensus that Joy Christian's argument against Bell's theorem is not valid. Bell's theorem can be disproven by providing a 3 setting dataset consistent with quantum mechanics, which has not been done. Therefore, Bell's theorem stands as a valid foundation for the introduction of the nonlocality notion in quantum mechanics.
  • #1
yoda jedi
397
1
Phys. Scr. 82 065002, 2010.

Is quantum mechanics nonlocal?

A factual inconsistency of the nonlocality theory is demonstrated via a careful analysis of the conceptual and formal contents of Bell's theorem and the inequalities associated with it. The conceptual inconsistency of the theory follows from the consideration that it is, in principle, impossible to formulate quantum mechanics in terms of local hidden variables. The formal inconsistency of the nonlocality theory follows from the facts that: (i) nonlocality is not a physical property that can be represented by a function or an operator; (ii) it is impossible to derive Bell's inequality in a mathematically consistent way; and (iii) Bell's definition of locality is incorrect. Therefore, Bell's theorem cannot serve as the foundation for the introduction of the nonlocality notion in quantum mechanics.
 
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  • #2
yoda jedi said:
Phys. Scr. 82 065002, 2010.

Is quantum mechanics nonlocal?

A factual inconsistency of the nonlocality theory is demonstrated via a careful analysis of the conceptual and formal contents of Bell's theorem and the inequalities associated with it. The conceptual inconsistency of the theory follows from the consideration that it is, in principle, impossible to formulate quantum mechanics in terms of local hidden variables. The formal inconsistency of the nonlocality theory follows from the facts that: (i) nonlocality is not a physical property that can be represented by a function or an operator; (ii) it is impossible to derive Bell's inequality in a mathematically consistent way; and (iii) Bell's definition of locality is incorrect. Therefore, Bell's theorem cannot serve as the foundation for the introduction of the nonlocality notion in quantum mechanics.
I notice the author has withdrawn 'On the reality of EPR paradox' as mentioned here: http://arxiv.org/find/quant-ph/1/au:+Ruza_J/0/1/0/all/0/1"
Any opinions whether Joy Christian, who really has it in for Bell's theorem, has a solid case to make? http://arxiv.org/find/quant-ph/1/au:+Christian_J/0/1/0/all/0/1?skip=0&query_id=510870486b136afc"
 
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  • #3
Q-reeus said:
I notice the author has withdrawn 'On the reality of EPR paradox' as mentioned here: http://arxiv.org/find/quant-ph/1/au:+Ruza_J/0/1/0/all/0/1"
Any opinions whether Joy Christian, who really has it in for Bell's theorem, has a solid case to make? http://arxiv.org/find/quant-ph/1/au:+Christian_J/0/1/0/all/0/1?skip=0&query_id=510870486b136afc"

Interesting.

--------------
I think there is an inconsistency, i do not believe much in a post statistical justification,
besides, in some settings, while in others not.
apart quantum mechanics is not definitive, maybe will be replaced by other wider theory.
 
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  • #4
Q-reeus said:
Any opinions whether Joy Christian, who really has it in for Bell's theorem, has a solid case to make? http://arxiv.org/find/quant-ph/1/au:+Christian_J/0/1/0/all/0/1?skip=0&query_id=510870486b136afc"

Yes, the scientific consensus is that Joy's argument makes no sense. You can locate some of the criticism in the archives. Please recall that Bell can be proven incorrect simply by providing a 3 setting dataset which is consistent with QM at angles at which the inequality is violated. That should convince you there is no disproof.
 
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1. What is quantum nonlocality and how does it contradict classical physics?

Quantum nonlocality refers to the phenomenon in which two or more particles that were once in contact continue to be connected and influence each other even when they are physically separated. This contradicts classical physics, which states that particles cannot have an instantaneous influence on each other over a distance.

2. What is the famous EPR paradox and how does it relate to quantum nonlocality?

The EPR paradox, proposed by Einstein, Podolsky, and Rosen in 1935, highlights the contradiction between quantum nonlocality and classical physics. It suggests that if two particles are entangled and then separated, measuring one particle's state will instantaneously determine the state of the other particle, even if they are far apart.

3. How do experiments involving Bell's inequality demonstrate quantum nonlocality?

Bell's inequality is a mathematical expression that sets limits on the correlation between two particles based on classical physics principles. However, experiments have shown that these limits are violated, meaning that the particles are behaving in a nonlocal manner and contradicting classical physics.

4. Can quantum nonlocality be explained by hidden variables or local hidden variable theories?

No, hidden variables or local hidden variable theories have been disproven by experiments. These theories propose that there are underlying, hidden variables that determine the behavior of particles and can account for quantum nonlocality. However, experiments have shown that this is not the case and that particles truly exhibit nonlocal behavior.

5. What are the implications of quantum nonlocality for our understanding of the universe?

Quantum nonlocality challenges our understanding of causality and locality, two fundamental principles in classical physics. It also has practical implications for technologies such as quantum computing and cryptography. Additionally, it raises questions about the nature of reality and the relationship between the observer and the observed in quantum mechanics.

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