VOTE for the best QG paper, at Christine's blog

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Discussion Overview

The discussion revolves around identifying the best quantum gravity (QG) paper from 2005, as initiated by Christine Dantas on her blog. Participants share their nominations, express preferences, and discuss various papers related to quantum gravity theory.

Discussion Character

  • Debate/contested
  • Exploratory

Main Points Raised

  • Christine Dantas seeks nominations for the best QG paper of 2005, encouraging community participation.
  • Some participants suggest specific papers, including "Reconstructing the Universe" by Loll et al. and "Do we Observe Quantum Gravity Effects at Galactic Scales?" by Reuter and Weyer.
  • Another participant highlights "Quantum gravity in terms of topological observables" by Freidel and Starodubtsev for its writing quality.
  • There is mention of a technical issue that prevented another paper, "Quantum Spin Dynamics VIII. The Master Constraint" by Thiemann, from being nominated, which some believe could have ranked highly.
  • Participants note the popularity of Freidel's work, with multiple nominations for his papers.

Areas of Agreement / Disagreement

Participants express differing opinions on which paper should be considered the best, with no consensus reached on a single favorite. Multiple competing views remain regarding the merits of various papers.

Contextual Notes

Some papers mentioned may not have been fully represented due to technical difficulties in the nomination process, and there are unresolved preferences among participants regarding the quality and significance of the nominated works.

marcus
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Christine Dantas wants your idea of what was the best QG paper of 2005.

http://christinedantas.blogspot.com/

http://christinedantas.blogspot.com/2006/01/vote-for-best-quantum-gravity-paper-in.html
 
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Thaks for the link Marcus. Note that your second URL, http://christinedantas.blogspot.com/2006/01/vote-for-best-quantum-gravity-paper-in.html , is the permanent link to the background independent QG competition.

BTW she credits the suggestion to a commenter at Not Even Wrong, whose tag is "who". I've read a few of "who"'s comments and have my suspicions, but could it be anyone we know?
 
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selfAdjoint said:
... could it be anyone we know?

I'll never tell :smile:

Please vote! and help make Christine's blog a success. (it's new and she needs more people to comment)

BTW someone should nominate the 2005 Loll et al paper "Reconstructing the Universe"
 
marcus, I too like Freidel, but am also partial to this candidate:

http://arxiv.org/abs/astro-ph/0509163
Do we Observe Quantum Gravity Effects at Galactic Scales?
Authors: M. Reuter, H. Weyer
 
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Today Christine closed the nominations and posted the results.
The top three (most-nominated for best 2005 QG paper) are:

"Effective 3d Quantum Gravity and Non-Commutative Quantum Field Theory", by Laurent Freidel and Etera R. Livine [hep-th/0512113]

"Do we Observe Quantum Gravity Effects at Galactic Scales?", by M. Reuter and H. Weyer [astro-ph/0509163]

"The case for background independence", by Lee Smolin [hep-th/0507235]

Besides these, she lists 5 other papers which were also nominated of which two happened to be co-authored by Freidel. He's popular this year.

http://christinedantas.blogspot.com/2006/01/nominations-results.html
 
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All great papers! Tough choices. Another paper I very much liked was

Quantum gravity in terms of topological observables", by L. Freidel and A. Starodubtsev [hep-th/0501191]

Some of the others had more interesting content, but none were more beautifully written, IMO.
 
I just looked again at Christine's results and it appears that some technical difficulty prevented another paper from making the list.

It could well have made the top 3 or 4 papers but the person nominating it had some login problem (which I don't understand)

http://arxiv.org/abs/gr-qc/0510011
Quantum Spin Dynamics VIII. The Master Constraint
Thomas Thiemann
19 pages
AEI-2005-152

"Recently the Master Constraint Programme (MCP) for Loop Quantum Gravity (LQG) was launched which replaces the infinite number of Hamiltonian constraints by a single Master constraint. The MCP is designed to overcome the complications associated with
the non-Lie-algebra structure of the Dirac algebra of Hamiltonian constraints and was successfully tested in various field theory models. For the case of 3+1 gravity itself, so far only a positive quadratic form for the Master Constraint Operator was derived. In this paper we close this gap and prove that the quadratic form is closable and thus stems from a unique self-adjoint Master Constraint Operator. The proof rests on a simple feature of the general pattern according to which Hamiltonian constraints in LQG are constructed and thus extends to arbitrary matter coupling and holds for any metric signature. With this result the existence of a physical Hilbert space for LQG is established by standard spectral analysis."
 

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