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

Infinite Degeneracy of States in Quantum Gravity

  1. Nov 16, 2008 #1


    User Avatar
    Gold Member

    http://arxiv.org/PS_cache/arxiv/pdf/0811/0811.2161v1.pdf [Broken]

    He finds that only twists and knots are conserved in ribbon networks, that is, generalized spin networks. He finds that there is an infinite number of redundant states.

    He suggests in the end that one might try this.


    or this:

    "The only alternative to this is that we should reduce the physical Hilbert space of atheory of quantum gravity to require that there do not exist any knots or crossings."

    And in the next statement, it seems he will follow the first options, since the second means giving up everything he did on PI.

    "Our ability to consider this super selection rule and still do certain things (integrate over all
    topologies, consider embedded spin networks) is questionable and requires investigation
    before this can be adopted as an ‘easy’ solution.

    I'd like to listen to your opinions.

    But, anyway, if one wants to follow Yi DunWan, one must consider http://arxiv.org/PS_cache/gr-qc/pdf/0510/0510052v1.pdf
    Last edited by a moderator: May 3, 2017
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted