Conformal Cyclic Cosmology (CCC) Revisited

Discussion in 'Astronomy, Exobiology, & Cosmology' started by Cris, Apr 22, 2019.

  1. Cris In search of Immortality Valued Senior Member

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    9,199
    I did a search on the forums and only saw older partial references to this. Things have changed a little and I thought this hypothesis felt satisfying and worth debating further.



    A summary, from my limited understanding -

    Universe continues to expand.
    Black holes become dominant and eventually consume everything.
    Hawking radiation slowly leaks away from each black hole until they evaporate.
    That leaves a universe full of mass-less energy particles that experience neither time or distance.
    What does that mean for space-time? Does that even have meaning in this case? Does location have meaning?
    Isn't that effectively a singularity - > another big bang?
    Rinse and repeat.

    The gist is that the next big bang doesn't wait for all black holes to evaporate but that there is a threshold level of particles that triggers a big bang. That means there will be many black holes still in existence as a new big bang occurs. Part of Roger Penrose's new suggestion is that it should be possible to detect these block holes from the previous aeon in the CMB map.

    As I understand relativity this seems like a meaningful proposition for a cyclic model.
     
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  3. origin In a democracy you deserve the leaders you elect. Valued Senior Member

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    Shouldn't you have put this in 'Alternative Theories' since this is not a mainstream idea?
    I think that is the exact opposite of a singularity.
     
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  5. Vmedvil Registered Member

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    This is nonsense, something called thermal death or the big rip happens after the evaporation of those singularities.
     
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  7. RainbowSingularity Valued Senior Member

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    at time mark 1:50 the music directly conflicts with the voice.
    it is VERY annoying.
    deliberately done to annoy the listener and put people off ?

    whom ever was editing this and putting the music on forgot that people WANT to listen to what Roger is saying
    i stopped the video at that point and will not watch any further.
     
  8. paddoboy Valued Senior Member

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    22,374
    It says nothing about any cyclical universe or more BB's. At best and briefly...[1] the universe continues to expand...[2] As the mass/energy density gets less with expansion, the expansion accelerates...[3]Galaxies get further and further apart...[4] WD'S and Neutron stars become black cinders...[5]Stars die and no more fuel for more nuclear fusion [6]BH's become dormant [7] Matter left decomposes and all the forces relating to such are overcome [strong nuclear etc] to original fundamentals...[8] BH decay via Hawking Radiation...[9] Possible [but uncertain] proton decay ...
    [The discovery of DE and the accelerating expansion has seen any thoughts of recollapse evaporate so to speak.]
    And in the meantime space keeps expanding
     

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