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I see a Phys.SE question, asking if the "Many Worlds" and the "Multiverse" ideas are essentially equivalent. This question was quickly squashed with a no answer. I would like to rephrase the question.

Could the "Many Worlds" interpretation of quantum mechanics be an alternate explanation of our "fine tuned" universe?

What if what we see as the beginning of the universe is just when our universe with its physical laws and fundamental dimensionless constants "branched off"?

I am not looking for opinions here, but rather reasons to discredit this idea.

Qmechanic
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Jack R. Woods
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1 Answers1

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The Many Worlds interpretation (MWI) of quantum mechanics wasn't intended to be an explanation for the fact our universe is 'fine tuned' in a certain way, since it doesn't postulate the existence of multiple universes with different physical laws. Instead it assumes that the many worlds are super-positions of the possible states allowed under the rules of quantum mechanics - ie, the rules allowed in the universe as is.

Professor Sushing
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