How is QM modified in a small universe? Usually we have path integrals that consider every possible path throughout infinity. But what about the early universe that may have been about the size of an atom or smaller? Do we continue to consider all paths throughout infinity? Or are the paths constrained to the size of the universe, which may be quite small?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks.

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# QM in a very small universe.

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