Hi,
> Naive question: do physicists reconcile a "really flat" universe and
> the big bang theory? I don't see how.
you mean this problem?
http://en.wikipedia.org/wiki/Big_bang#Flatness.2Foldness_problem
Inflationary theories give a solution, but it is a bit ad hoc.
I am not a big fan of Big Bang - I like Paul Steinhardt's (not Eric
Steinhart) cyclic universe, but I have not read enough about that model
to know if it fares better explaining cosmological observations (but it
is _compatible_ with current observations).
But those reflections are from before my MWI times ;-)
MWI explains fine-tuning (but not flatness) due to the anthropic principle.
Cheers,
Günther
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Received on Mon Jan 19 2009 - 14:33:21 PST