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How does M-Theory deal with space time?

  1. Jan 27, 2014 #1
    How does M-Theory deal with space time? One of my friends said something like it verifies it. Is anything known about it?
  2. jcsd
  3. Jan 29, 2014 #2
    I'm not sure a lot is known. The various string theories--which are M-theory dimensionally reduced in various ways--have to have a spacetime given to them, as opposed to the background falling out of the equations like how Minkowski spacetime is a solution of GR.

    11d supergravity--the low energy limit of M-theory--has an SO(10,1) type spacetime. But who knows what's going on in M-theory.
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