Quantum Suicide: Exploring Copenhagen & Many Worlds Interpretations

In summary: But you can't ignore the worlds where you are sleeping, since they are relevant to your future selves. You are not guaranteed to wake up, you are guaranteed to have been awake before going to sleep.In summary, there is no way to modify the original quantum suicide experiment to distinguish between the many worlds and Copenhagen interpretations. This is because all interpretations use the same mathematics and have the same experimental results. While some argue that different interpretations can lead to different theories, there is no experiment that can test these differences. Additionally, attempts to modify the experiment to put the subject to sleep rather than dying would not prove anything about the many worlds interpretation due to the principles of probability and the fact that one cannot discount the worlds in which they are sleeping.
  • #1
john taylor
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Is it possible to modify the original quantum suicide experiment in a way in which rather than dying you are put to sleep for someone to distinguish between many worlds and Copenhagen interpretations?
 
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  • #2
john taylor said:
Is it possible to modify the original quantum suicide experiment in a way in which rather than dying you are put to sleep for someone to distinguish between many worlds and Copenhagen interpretations?
No. There are no experiments that can distinguish among interpretations. That's why they are CALLED interpretations --- they all use the same math and have the same experimental results.
 
  • #4
StevieTNZ said:
Disputed by some

What is disputed is not whether experiments can distinguish among interpretations; they can't. That's the definition of an "interpretation": that it doesn't change any predictions of a theory, it just changes what story you tell in ordinary language.

What is disputed is whether different interpretations of QM can be extended to different theories--models that make different predictions from standard QM for some experiments--and if so, whether the differences between these different theories could be tested experimentally. Notice that in the very post you link to, @stevendaryl carefully makes just this distinction:

stevendaryl said:
People often say that Many-Worlds, Bohmian mechanics and Copenhagen are different interpretations of the same theory, and so by definition, they can't be distinguished by experiment. To me, they are slightly different theories, not different interpretations of the same theory.
 
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  • #5
john taylor said:
Is it possible to modify the original quantum suicide experiment in a way in which rather than dying you are put to sleep for someone to distinguish between many worlds and Copenhagen interpretations?

What the others said above is right, but more specifically addressing your question: No, nobody has ever published a variation of the suicide experiment that works without actually dying. It's not a very common research topic. Further, all the (living) well-known figures who are partial to many worlds don't think the suicide experiment would work anyway; it might just be an incorrect application of probability.
 
  • #6
john taylor said:
Is it possible to modify the original quantum suicide experiment in a way in which rather than dying you are put to sleep for someone to distinguish between many worlds and Copenhagen interpretations?
It wouldn't work, but since nobody here explained why, let me explain it. If you are put to sleep (rather than killed), then sooner or later you will awake. If someone repeats the experiment many times on you, and if each time the probability is 50% that you will be put to sleep, then in about half the cases you will experience awakening. Sure, according to MWI, there will be one copy of you that will never be put to sleep and hence never experience awakening, but most likely you will not be that copy. The probability that you will be that copy is the same as the probability that you will just be lucky without MWI. Hence this cannot prove MWI.

By the way, if someone is interested in more serious probabilistic paradoxes related to sleep, I recommend https://www.physicsforums.com/threads/the-sleeping-beauty-problem-any-halfers-here.916459/
 
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To put it another way: if the phenomena worked such that you could discount the worlds where you are sleeping it would create Quantum Insomnia. Since there is always some world where you stay awake a little longer, you would never experience falling asleep.

Quantum Immortality, as used in the suicide experiment, only works because you ignore the worlds where you are dead. That's justified since they are rather irrelevant to your future selves.
 
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1. What is the concept of quantum suicide?

Quantum suicide is a thought experiment that explores the implications of the Copenhagen and Many Worlds interpretations of quantum mechanics. It involves a hypothetical experiment where a person is placed in a situation where their survival depends on the outcome of a quantum measurement.

2. What is the Copenhagen interpretation of quantum mechanics?

The Copenhagen interpretation states that a quantum system exists in a state of superposition until it is observed or measured, at which point it "collapses" into a definite state. This means that the observer plays a crucial role in the outcome of a quantum experiment.

3. What is the Many Worlds interpretation of quantum mechanics?

The Many Worlds interpretation suggests that every possible outcome of a quantum measurement exists in a parallel universe, and each outcome is equally real. This means that there are multiple versions of the universe, and the observer simply experiences one of them based on the outcome of the measurement.

4. How does quantum suicide challenge these interpretations?

In quantum suicide, the person is placed in a situation where their survival depends on a quantum measurement. If the Copenhagen interpretation is true, the person would always perceive themselves as surviving, even if the odds of survival are very low. If the Many Worlds interpretation is true, the person would experience both survival and death in different parallel universes, leading to the question of which experience is the "real" one.

5. What are some potential implications of quantum suicide?

Quantum suicide raises questions about the nature of reality and the role of consciousness in the universe. It also challenges our understanding of free will and determinism. Additionally, it could have practical implications for quantum computing and the potential for parallel universes to interact with each other.

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