Bianca Dittrich saves the loopski bacon?

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Discussion Overview

The discussion revolves around a paper by Bianca Dittrich concerning the loopski Hamiltonian and its implications for the Loop Quantum Gravity program. Participants explore the significance of Dittrich's work in generating observables within the framework of General Relativity and quantum gravity.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses enthusiasm about Dittrich's paper, suggesting it indicates progress in the Loop Quantum Gravity program and a potential simplification of previous methodologies.
  • Another participant highlights the excitement around Dittrich's method for generating a larger number of observables, contrasting it with the limited number produced by previous theorists.
  • There is a light-hearted suggestion to send flowers to Dittrich in appreciation of her work.
  • Participants engage in playful banter regarding academic aspirations and departmental appointments, indicating a collegial atmosphere.

Areas of Agreement / Disagreement

Participants generally express excitement about Dittrich's work, but there is no consensus on the implications or correctness of the claims made regarding the loopski Hamiltonian and the number of observables.

Contextual Notes

The discussion does not resolve the implications of Dittrich's findings or the validity of the claims made about the loopski Hamiltonian and its observables.

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
 
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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.
 
selfAdjoint said:
Yes Marcus, I've been studying this Dittrich paper, and it seems to be very exciting.

Let's send her flowers :wink:
 
With thinking like that you'll be a Dean someday.
 
ohwilleke said:
With thinking like that you'll be a Dean someday.

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

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