How abou the hidden variable theory?

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SUMMARY

The discussion centers on the current state of hidden variable theories in quantum mechanics, particularly referencing Gerard 't Hooft's recent contributions. Despite ongoing research, no hidden variable theory has yet matched the predictive accuracy of Quantum Electrodynamics (QED). Local hidden variable theories are largely dismissed due to Bell's Theorem, with proponents suggesting that observed relationships may be influenced by experimental biases. Bohmian Mechanics is noted as a significant non-local candidate in this field.

PREREQUISITES
  • Understanding of Quantum Mechanics (QM) principles
  • Familiarity with Quantum Electrodynamics (QED)
  • Knowledge of Bell's Theorem and its implications
  • Basic concepts of Bohmian Mechanics
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  • Research the implications of Bell's Theorem on local hidden variable theories
  • Explore the foundational principles of Bohmian Mechanics
  • Investigate recent publications by Gerard 't Hooft on hidden variable theories
  • Examine experimental setups that test the predictions of QED versus hidden variable theories
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Physicists, quantum mechanics researchers, and students interested in the foundations of quantum theory and the ongoing debates surrounding hidden variable theories.

xylai
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There are lots of works on the hidden variable.
How about the theory recently?
Thank you!
 
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I know 't Hooft has done some work in this area during the last few years, but I don't think he (or anyone) is even close to finding a hidden variable theory that can predict the outcome of experiments as accurately as QED.
 
No new additions to the standard theory (QM) itself. As to local hidden variable theories, which are forbidden from agreeing with QM per Bell's Theorem: There are a few diehards out there who cling to the idea of a stochastic theory which has local hidden variables. Their thinking is that the standard cos^2(theta) relationship observed in experiments is an illusion, that there are experimental problems which "bias" the results. At this time, there is no seriously considered options for local hidden variable theories. There is a non-local candidate, however: Bohmian Mechanics.
 

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