Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

A Status of Cyclic Cosmology ?

  1. Nov 25, 2016 #1

    Jim

    User Avatar

    Its been formalized for ~15 yrs now by Steinhardt & Turok; Wiki sez it has problems, but will not elaborate.
    My concern is that despite their denial, their version of CC is built on branes, which are
    of course a Very speculative basis, since it originates in M-theory. Worse, S&T do not
    seem tb developing their CC model any further.
     
  2. jcsd
  3. Nov 25, 2016 #2

    Chronos

    User Avatar
    Science Advisor
    Gold Member

  4. Dec 11, 2016 #3

    Jim

    User Avatar

    Thanx, & will check Paul's intvw out. In an earlier paper for gen. readership, Paul implied that M-theory was not necessary, just a "useful basis to build their cyclic model upon". Still not sure I believe this, as their `std.model' relies heavily upon the Branes of M-th.at every turn of the road. Turok has a recent paper indicating he's still working on & improving it.
    Another question is why no definitive observations ? S&T pointed out in their book, `Endless Universe' that their theory predix everything inflation does except primordial grav waves. BICEP2 could've shot down their cyclic model if these B-mode grav waves had been discovered, but were not. So far, only this failure of inflation would appear to support the cyclic model, but no direct evidence exists.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted