Many Worlds - Superdeterministic?

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SUMMARY

The discussion centers on the Many Worlds Interpretation (MWI) of quantum mechanics, particularly its deterministic nature and implications for the concept of a multiverse. Participants debate whether MWI is open to interpretation and if it can be considered superdeterministic. Key points include the assertion that all outcomes occur due to quantum effects, leading to indeterminate futures, and the idea that universes branch off during wave function evolution rather than instantaneously. The conversation highlights the complexities of quantum mechanics and the philosophical implications of MWI.

PREREQUISITES
  • Understanding of Many Worlds Interpretation (MWI) of quantum mechanics
  • Familiarity with wave function evolution and decoherence
  • Knowledge of quantum entanglement and its implications
  • Basic grasp of determinism and superdeterminism in physics
NEXT STEPS
  • Research the mathematical formalism of quantum mechanics and its interpretations
  • Explore the concept of decoherence and its role in quantum mechanics
  • Study the implications of quantum entanglement on locality and determinism
  • Investigate the relationship between Many Worlds Interpretation and string theory
USEFUL FOR

Physicists, quantum mechanics enthusiasts, and anyone interested in the philosophical implications of quantum interpretations, particularly those exploring the Many Worlds Interpretation and its deterministic nature.

  • #31
mfb said:
I would not call it illusion. All the fields still live in 3+1 spacetime dimensions. To describe the full state of the universe, you need more dimensions to describe correlations.
This is true independent of the interpretation of quantum mechanics.

How many dimensions would you postulate the multiverse has, given you just implied there's more than 4 correct?
 
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  • #32
There is no multiverse involved.
The number of degrees of freedom depends on the definition and the theory considered, but it involves huge numbers (like 1080, the number of particles in the observable universe).
 
  • #33
mfb said:
There is no multiverse involved.
The number of degrees of freedom depends on the definition and the theory considered, but it involves huge numbers (like 1080, the number of particles in the observable universe).

Many Worlds doesn't involve the Multiverse?
Could you please elaborate on this?

Also could someone more knowledgeable let me know if, seeing as how the quantum wave function just describes all the possibilities at once(superposition), is it possible they don't all happen at once?

That is to say probability over time, and eventually all the probabilities are realized overtime?
 
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  • #34
Hybrid said:
Many Worlds doesn't involve the Multiverse?
Could you please elaborate on this?
"Multiverse" is neither a clearly defined concept nor a generally accepted notion in modern physics, so there's no good answer to this question.

Also could someone more knowledgeable let me know if, seeing as how the quantum wave function just describes all the possibilities at once(superposition), is it possible they don't all happen at once?

That is to say probability over time, and eventually all the probabilities are realized overtime?
As far as the formalism of quantum mechanics is concerned, superposition is just a mathematical property of the wave function that allows us to calculate the probabilities of getting various results from various measurements. You can interpret the wave function at any moment as saying as "Any of these things could happen with various probabilities; you actually will see exactly one of them happen" and if you read anything more than that into it, you do so at your own risk.
 
  • #35
This thread has drifted away from the original question and into the interpretational swamp, so it is time to close it.
 

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