The microwave background might be a local phenomenon and have nothing to do with quantum mechanics. Also, the only reason quantum mechanics might be relevant to cosmology is the supposed inflationary phase, which answered a tricky problem but it is only a hypothesis as is all the rest. Relativity is inherently bogus as formulated and it is about time to do it right.
If (as Lisa Randall [Goddess-Harvard Physics] has suggested, see her book Warped Passages)--there are extra hidden dimensions;
and those dimensions may be on the order of 10-33 cm, but possibly much larger;
and there may be 'branes' connecting portions of reality with additional dimensions which are closed to us;
How do these extra dimensions relate to the Big Bang and the Higgs boson? How would the other dimensions and the associated branes be affected by inflation?
Well over my current state of reading.
The questions themselves may be meaningless, or indicative of *profound* misunderstandings on my part.
I agree. It is far more likely that we simply don't fully understand Cosmology and the background radiation. QM has been going pretty strong for a while. It is interesting though.
Good thing the Bible didn't have alot to say about this stuff, otherwise these posts might turn into pages long flames.