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Fecund Universes

  1. Jun 16, 2015 #1
    As a general amateur enthusiast of physics, I've been reading about various proposals regarding a multiverse, beyond the big bang and the borderline philosophical concepts of beyond the big bang.

    I 'warm' to Lee Smolin's Fecund Universes idea. A universe is born... with slightly different constants and the laws of natural selection applying to child universes lasting over time, with a black hole as its parent.

    I was wondering whether the problem of 'if the information is lost' was dealt with in this (or similar) theories when such a thing occurs, which'd apparently be a violation of the known laws of physics. I have this idea that, potentially, because time slows and general relativity breaks down at a black hole, that the entire child universe created could potentially last for planck length of time (on our universe's scale of time), but in itself have a lifespan similar to our own. i.e. the child universe lives a normal life, but from our frame of reference it never existed and could never be detected.

    Said universe's collapse on themself and their entropy is emitted out the black hole as radiation. Because they are two separate systems and the parent universe has no deterministic way of knowing the information output, perhaps it could explain why time apparently moves in one direction. (It seems like only one non-reversible process through our own universe or many would result in time moving one way).

    Taking the idea to our own parent univese, precisely nothing would have happened since the big bang. The utmost parent universe, to us, would apparently last for an eternity but be subject to the same cyclical nature.

    As people who are undoubtably more knowledgeable about the practical limits and currently understood knowledge, I welcome any insight!
  2. jcsd
  3. Jun 16, 2015 #2
    It's one of many 'multiverse' proposals on offer which are supposed to explain the origin of the known observable universe.
    However I don't personally take any of these very seriously, since any one of these proposals might be correct, and also none of them might be correct.
    Given the lack of any evidence for any multiverse proposal at present, I can't see them as deserving any status better than interesting speculation.
    Being able to produce nice mathematical models is useless by itself, the model needs to describe actually occuring physical phenomena that we are certain of.
  4. Jun 16, 2015 #3
    Thanks, that's the impression I get. There are a lot of theories, some more popular than others.

    I was thinking with regards to the 2nd point about information and black holes, there would be the potentially to measure 'bits in, bits out' if it were possible to create a black hole.
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