Could we witness other universes begin?

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If the universe is a product of quantum fluctuations, isn't it possible then that we could witness new universes spring into existence around us?
 
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Independent of the unclear (!) origin of our universe, the universe is not something in space and time - it is space and time (with something inside). No, you won't see new universes popping up somewhere. You can see the effects of quantum fluctuations, however (Casimir effect, for example).
 

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