Spooky Action at a Distance / Tachyons?

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SUMMARY

The discussion centers on the mechanisms behind the "spooky action at a distance" observed in Bell Inequality experiments, specifically questioning the role of tachyons. Bohmian Mechanics is highlighted as a non-local mechanism that adequately addresses this phenomenon without necessitating a hidden mechanism. The consensus is that tachyons are not suitable for explaining quantum correlations due to their implications of causality violations and the requirement for instantaneous communication between particles, which has been experimentally ruled out.

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  • Understanding of Bell Inequality experiments
  • Familiarity with Bohmian Mechanics
  • Knowledge of quantum non-locality concepts
  • Basic principles of tachyons and their theoretical implications
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  • Research the implications of Bohmian Mechanics on quantum theory
  • Study the experimental results related to Bell Inequality violations
  • Explore the concept of tachyons and their role in theoretical physics
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Physicists, quantum mechanics researchers, and students interested in the foundations of quantum theory and the implications of non-locality in quantum experiments.

edpell
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Has anybody proposed a mechanism for the spooky action at a distance of the wave function collapse in Bell Inequality type experiments? Does anybody propose tachyons as a mechanism?
 
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edpell said:
Has anybody proposed a mechanism for the spooky action at a distance of the wave function collapse in Bell Inequality type experiments? Does anybody propose tachyons as a mechanism?

Bohmian Mechanics has an explicit non-local mechanism.
 
DrChinese said:
Bohmian Mechanics has an explicit non-local mechanism.
And of course there is no fundamental need for a mechanism.

If one does feel a need for a mechanism, then tachyons certainly don't sound like the right one. Quantum-mechanical correlations don't propagate information at speeds greater than c, whereas most interpretations of tachyons say that tachyons do. Therefore you've taken a problem that isn't really a problem (the desire for a hidden mechanism) and turned it into something that is a problem (causality violation).
 
I don't think the transmission of tachyons is even good enough. Leggett's inequality assumes that the only kind of nonlocality you have is two-way instantaneous communication between any two particles in the universe, and it's been ruled out by experiment. The kind of nonlocality that's required is not just two-way "telephone connections" between particles; you need a "conference call" between all the particles. In other words, any nonlocal realist theory must have the same kind of holism that Bohmian mechanics does.
 

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