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Bianca Dittrich saves the loopski bacon?

  1. Jul 28, 2005 #1

    marcus

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    Just as I was going to simplify my life by going all out Triangles
    along comes this paper where
    she's got a line on the loopski hamiltonian.

    http://arxiv.org/gr-qc/0507106

    or suspiciously like that.

    selfAdjoint or somebody. tell me what's wrong
    or that I'm dreaming. It looks to me like the kind of
    things that were SUPPOSED to happen in the Loop program
    are little by little happening. And maybe going a bit lighter
    on the machinery than with the earlier masterconstraint
    methodology. more the eagle feather and less of the cudgel.
    or am I mistaken?

    previous entry flagging this paper:
    https://www.physicsforums.com/showpost.php?p=690128&postcount=371
    https://www.physicsforums.com/showthread.php?p=690128#post690128
     
    Last edited: Jul 28, 2005
  2. jcsd
  3. Jul 28, 2005 #2

    selfAdjoint

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    Yes Marcus, I've been studying this Dittrich paper, and it seems to be very exciting. As she says, decades of work by GR theorists, string theorists, and quantum gravity theorists have only come up with ten complete observables, plus one extra that some bright researcher found, whereas there must be beaucoup of them because canonical GR has a continuum of first class constraints. "For each point [tex]\sigma \in \Sigma [/tex]there are d diffeomorphism constraints..." (sentence leading to equation (35), which displays the form of the constraints. Now she has a method for generating many, many more.
     
  4. Jul 28, 2005 #3

    marcus

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    Let's send her flowers :wink:
     
  5. Jul 29, 2005 #4

    ohwilleke

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    With thinking like that you'll be a Dean someday.
     
  6. Jul 29, 2005 #5

    marcus

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    Sounds great! I'll appoint Renate Loll to chair the physics department!
    How many secretaries do Deans get?
     
    Last edited: Jul 29, 2005
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