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QM in a very small universe.

  1. May 24, 2004 #1
    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?

  2. jcsd
  3. May 26, 2004 #2
    If the dimensions of the very early universe were curled up and flatten out with expansion, then can QM be formulated in these curled up dimensions? Thanks.
  4. May 26, 2004 #3
    this field you are asking the question in is quantum cosmology.
    try this link (if you havent tried it already):

    although it's not technical overview so i dont how much can it help you.
  5. May 26, 2004 #4
    Isn't this precisely how one would connect QM with GR... by determining how to do QM in curved space-times? It sounds like a change of coordinates. But I'm probably being naive about it.
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