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Just recently Hawking rejected baby universes; the mechanism was that black holes would spawn a new dimension unseen from our universe.
Smolin first proposed this idea, and as far as I can tell in recent discussions between Susskind and Smolin he still believes in it.
Susskind had argued what happens when two black holes merge? Do two baby universes become one? It doesn’t add up! On the other hand he seems to favor eternal inflation. I’m not very familiar with this, but I think it’s where our universe will expand to eventually cause another region of the universe to separate, kind of like a bubble divining in two, and so the whole universe is like a glass of soda water filled with billions of bubbles.
One other mechanism to mention is the cyclic scenario, but likewise it doesn’t seem to be consistent with observation; that is the universe has low density, which will cause it to expand forever. This would seem to be in favor of eternal inflation only I can’t see such a process being consistent with the conditions the universe began with.
So are all these theories flawed? Or is there a mechanism we haven’t considered yet?
I accidentally posted this in the wrong forum so if someone can move it to the appropriate forum, thanks…
Smolin first proposed this idea, and as far as I can tell in recent discussions between Susskind and Smolin he still believes in it.
Susskind had argued what happens when two black holes merge? Do two baby universes become one? It doesn’t add up! On the other hand he seems to favor eternal inflation. I’m not very familiar with this, but I think it’s where our universe will expand to eventually cause another region of the universe to separate, kind of like a bubble divining in two, and so the whole universe is like a glass of soda water filled with billions of bubbles.
One other mechanism to mention is the cyclic scenario, but likewise it doesn’t seem to be consistent with observation; that is the universe has low density, which will cause it to expand forever. This would seem to be in favor of eternal inflation only I can’t see such a process being consistent with the conditions the universe began with.
So are all these theories flawed? Or is there a mechanism we haven’t considered yet?
I accidentally posted this in the wrong forum so if someone can move it to the appropriate forum, thanks…
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