Our picks for 2008 MIP (most important QG paper)

[marcus]

The poll allows multiple choices...which are your picks for the 2008 papers likely to prove most valuable to future research?

The Uncanny Precision of the Spectral Action
Ali H. Chamseddine, Alain Connes
http://arxiv.org/abs/0812.0165

Loop Quantum Cosmology: An Overview
Abhay Ashtekar
http://arxiv.org/abs/0812.0177

Loop Quantum Gravity
Carlo Rovelli
(new review)
http://relativity.livingreviews.org/Articles/lrr-2008-5/

LQG propagator: III. The new vertex
Emanuele Alesci, Eugenio Bianchi, Carlo Rovelli
http://arxiv.org/abs/0812.5018

Self-energy and vertex radiative corrections in LQG
Claudio Perini, Carlo Rovelli, Simone Speziale
http://arxiv.org/abs/0810.1714

Background-free propagation in loop quantum gravity
Simone Speziale
http://arxiv.org/abs/0810.1978

On the semiclassical limit of 4d spin foam models
Florian Conrady, Laurent Freidel
http://arxiv.org/abs/0809.2280

Path integral representation of spin foam models of 4d gravity
Florian Conrady, Laurent Freidel
http://arxiv.org/abs/0806.4640

A Lagrangian approach to the Barrett-Crane spin foam model
Valentin Bonzom, Etera R. Livine
http://arxiv.org/abs/0812.3456

The Nonperturbative Quantum de Sitter Universe
J. Ambjorn, A. Goerlich, J. Jurkiewicz, R. Loll
http://arxiv.org/abs/0807.4481

Bare Action and Regularized Functional Integral of Asymptotically Safe Quantum Gravity
Elisa Manrique, Martin Reuter
http://arxiv.org/abs/0811.3888

Motion of a “small body” in non-metric gravity
Kirill Krasnov
http://arxiv.org/abs/0812.3603

Effective Theory of Braid Excitations of Quantum Geometry in terms of Feynman Diagrams
Yidun Wan
http://arxiv.org/abs/0809.4464

================================
Most of these papers have been discussed some already in PF threads. One however was just posted at arxiv today. Since it may not be already known, I'll give the abstract for it:
LQG propagator: III. The new vertex
Emanuele Alesci, Eugenio Bianchi, Carlo Rovelli
"In the first article of this series, we pointed out a difficulty in the attempt to derive the low-energy behavior of the graviton two-point function, from the loop-quantum-gravity dynamics defined by the Barrett-Crane vertex amplitude. Here we show that this difficulty disappears when using the corrected vertex amplitude recently introduced in the literature. In particular, we show that the asymptotic analysis of the new vertex amplitude recently performed by Barrett, Fairbairn and others, implies that the vertex has precisely the asymptotic structure that, in the second article of this series, was indicated as the key necessary condition for overcoming the difficulty."

 

[marcus]

Many of these papers are from the last quarter of the year, and all but a few so recent they've barely had time to garner citations---ordinarily a helpful sign of how influential a paper is going to be. Though still too early to report counts, I will list a few parenthetically, as a sample, and give the cits links in case anyone wants to check later on.

BTW I'd like to add a Stephon Alexander paper as a "write-in". If you want to put in a plug for it, just post to that effect. I'll add it onto this list.

The Uncanny Precision of the Spectral Action
Ali H. Chamseddine, Alain Connes
http://arxiv.org/cits/0812.0165

Loop Quantum Cosmology: An Overview
Abhay Ashtekar
http://arxiv.org/cits/0812.0177

Loop Quantum Gravity
Carlo Rovelli
(new review)
http://www.slac.stanford.edu/spires/find/hep/www?j=00222,11,5

LQG propagator: III. The new vertex
Emanuele Alesci, Eugenio Bianchi, Carlo Rovelli
http://arxiv.org/cits/0812.5018

Self-energy and vertex radiative corrections in LQG
Claudio Perini, Carlo Rovelli, Simone Speziale
http://arxiv.org/cits/0810.1714 (2)

Background-free propagation in loop quantum gravity
Simone Speziale
http://arxiv.org/cits/0810.1978 (2)

On the semiclassical limit of 4d spin foam models
Florian Conrady, Laurent Freidel
http://arxiv.org/cits/0809.2280 (9)

Path integral representation of spin foam models of 4d gravity
Florian Conrady, Laurent Freidel
http://arxiv.org/cits/0806.4640 (12)

A Lagrangian approach to the Barrett-Crane spin foam model
Valentin Bonzom, Etera R. Livine
http://arxiv.org/cits/0812.3456

The Nonperturbative Quantum de Sitter Universe
J. Ambjorn, A. Goerlich, J. Jurkiewicz, R. Loll
http://arxiv.org/cits/0807.4481 (2)

Bare Action and Regularized Functional Integral of Asymptotically Safe Quantum Gravity
Elisa Manrique, Martin Reuter
http://arxiv.org/cits/0811.3888

Motion of a “small body” in non-metric gravity
Kirill Krasnov
http://arxiv.org/cits/0812.3603

Effective Theory of Braid Excitations of Quantum Geometry in terms of Feynman Diagrams
Yidun Wan
http://arxiv.org/cits/0809.4464

Quantum gravity as a Fermi liquid
Stephon H.S. Alexander, Gianluca Calcagni
( http://arxiv.org/abs/0807.0225 )
http://arxiv.org/cits/0807.0225


I don't have a cits link for the Rovelli LQG review article but its Spires entry should eventually serve equally well.

 

[MTd2]

Two things:

1. I still cannot understand what Connes theory is about.
2. Where is the Bennedeti and Modesto's articles?

https://www.physicsforums.com/showthread.php?t=270975
https://www.physicsforums.com/showthread.php?t=281096

I think these are the best ones. The first 2 have really might really have deep consequences for all mathematics and most of theories nowadays, including strings. Don't forget that CDT, whose dimensional transion is modeled by the fractal approach, worked started with non critical strings.

I can't really vote if you do not include these 2.

 

[marcus]

Where is the Bennedeti and Modesto's articles?

I can't really vote if you do not include these 2.

Consider them hereby included!Fractal properties of quantum spacetime
Dario Benedetti
http://arxiv.org/abs/0811.1396

"We show that in general a spacetime having a quantum group symmetry has also a scale dependent fractal dimension which deviates from its classical value at short scales, a phenomenon that resembles what observed in some approaches to quantum gravity. In particular we analyze the cases of a quantum sphere and of k-Minkowski, the latter being relevant in the context of quantum gravity."
Fractal Structure of Loop Quantum Gravity
Leonardo Modesto
http://arxiv.org/abs/0812.2214

"In this paper we have calculated the spectral dimension of loop quantum gravity (LQG) using simple arguments coming from the area spectrum at different length scales. We have obtained that the spectral dimension of the spatial section runs from 2 to 3, across a 1.5 phase, when the energy of a probe scalar field decreases from high to low energy. We have calculated the spectral dimension of the space-time also using results from spin-foam models, obtaining a 2-dimensional effective manifold at high energy. Our result is consistent with two other approaches to non-perturbative quantum gravity: causal dynamical triangulation and asymptotic safety quantum gravity."Now anyone can vote for either one or both of these (by posting on this thread indicating their choice), plus any of the others that were included in the regular poll. This is in the tradition of including votes for "write-in" candidates. There was a lot of innovative research activity this year, so I found it difficult to narrow the choices. I am glad to include your suggestions. Vote for any of the others you wish to as well.

 

[MTd2]

Where is the box to cast in my vote?

 

[marcus]

Where is the box to check to cast in my vote?

It's not possible to edit a poll so I can't put a box in for you to check. You have posted a "write-in" vote for the Benedetti and Modesto papers, so that will be counted. You can also vote for other choices on the regular poll if you wish.

Earlier I added a paper by Stephon Alexander as a possible write-in. This paper was suggested by atyy after it was too late to include in the regular poll. As I say, there were a lot to choose from this year!

https://www.physicsforums.com/showpost.php?p=2018765&postcount=15
https://www.physicsforums.com/showpost.php?p=2018797&postcount=18

BTW I'd like to add a Stephon Alexander paper as a "write-in". If you want to [vote] for it, just post to that effect. I'll add it onto this list.


Quantum gravity as a Fermi liquid
Stephon H.S. Alexander, Gianluca Calcagni
( http://arxiv.org/abs/0807.0225 )
http://arxiv.org/cits/0807.0225
...

 

[marcus]

Five people have recorded their predictions so far. Thanks to all who responded!
Besides the papers listed in the poll we have three "write-ins"Fractal properties of quantum spacetime (1 vote: MTd2)
Dario Benedetti
http://arxiv.org/abs/0811.1396

Fractal Structure of Loop Quantum Gravity (2 votes: MTd2, marcus)
Leonardo Modesto
http://arxiv.org/abs/0812.2214

Quantum gravity as a Fermi liquid (1 vote: marcus)
Stephon H.S. Alexander, Gianluca Calcagni
http://arxiv.org/abs/0807.0225

========================

So far, as of 2 January, the front-runner is Alain Connes' paper with three votes (atyy, humanino, and yrs trly).
So three out of the five people who have responded considered it potentially the most important or most valuable to future research.
The responses also put the spotlight on several other papers, but I will just mention this one for now.

 

[atyy]

I somehow missed seeing Yidun Wan's paper on the list, but since write in's are allowed now, I shall add to my Connes vote:

Yidun Wan, Effective Theory of Braid Excitations of Quantum Geometry in terms of Feynman Diagrams

Stephon H.S. Alexander, Gianluca Calcagni, Quantum gravity as a Fermi liquid

 

[marcus]

I want to be sure to keep track of the write-in votes. Here's a list of the papers selected so far. Votes are indicated by initials and the list has been ordered by the number received. The plus sign + indicates a write-in.

The Uncanny Precision of the Spectral Action (a,h,m)
Ali H. Chamseddine, Alain Connes
http://arxiv.org/abs/0812.0165

LQG propagator: III. The new vertex (M,m)
Emanuele Alesci, Eugenio Bianchi, Carlo Rovelli
http://arxiv.org/abs/0812.5018

Path integral representation of spin foam models of 4d gravity (f,m)
Florian Conrady, Laurent Freidel
http://arxiv.org/abs/0806.4640

A Lagrangian approach to the Barrett-Crane spin foam model (f,M)
Valentin Bonzom, Etera R. Livine
http://arxiv.org/abs/0812.3456

Effective Theory of Braid Excitations of Quantum Geometry in terms of Feynman Diagrams (M, +a)
Yidun Wan
http://arxiv.org/abs/0809.4464

Fractal Structure of Loop Quantum Gravity (+M, +m)
Leonardo Modesto
http://arxiv.org/abs/0812.2214

Quantum gravity as a Fermi liquid (+a, +m)
Stephon H.S. Alexander, Gianluca Calcagni
http://arxiv.org/abs/0807.0225

Loop Quantum Gravity (m)
Carlo Rovelli
(new review)
http://relativity.livingreviews.org/Articles/lrr-2008-5/

Fractal properties of quantum spacetime (+M)
Dario Benedetti
http://arxiv.org/abs/0811.1396

The Nonperturbative Quantum de Sitter Universe (m)
J. Ambjorn, A. Goerlich, J. Jurkiewicz, R. Loll
http://arxiv.org/abs/0807.4481

Motion of a “small body” in non-metric gravity (M)
Kirill Krasnov
http://arxiv.org/abs/0812.3603

 

[marcus]

So far 5 people registered their predictions about which 2008 papers will prove most important to future research. Here's the list of the papers that people voted for. The plus sign + indicates a write-in.

I'll add some links to where we can eventually check for citation numbers.
Those don't tell the whole story but do have some useful correlation with the papers' research value.

The Uncanny Precision of the Spectral Action (a,h,m)
Ali H. Chamseddine, Alain Connes
http://arxiv.org/abs/0812.0165
http://arxiv.org/cits/0812.0165

LQG propagator: III. The new vertex (M,m)
Emanuele Alesci, Eugenio Bianchi, Carlo Rovelli
http://arxiv.org/abs/0812.5018
http://arxiv.org/cits/0812.5018

Path integral representation of spin foam models of 4d gravity (f,m)
Florian Conrady, Laurent Freidel
http://arxiv.org/abs/0806.4640
http://arxiv.org/cits/0806.4640

A Lagrangian approach to the Barrett-Crane spin foam model (f,M)
Valentin Bonzom, Etera R. Livine
http://arxiv.org/abs/0812.3456
http://arxiv.org/cits/0812.3456

Effective Theory of Braid Excitations of Quantum Geometry in terms of Feynman Diagrams (M, +a)
Yidun Wan
http://arxiv.org/abs/0809.4464
http://arxiv.org/cits/0809.4464

Fractal Structure of Loop Quantum Gravity (+M, +m)
Leonardo Modesto
http://arxiv.org/abs/0812.2214
http://arxiv.org/cits/0812.2214

Quantum gravity as a Fermi liquid (+a, +m)
Stephon H.S. Alexander, Gianluca Calcagni
http://arxiv.org/abs/0807.0225
http://arxiv.org/cits/0807.0225

Loop Quantum Gravity (m)
Carlo Rovelli
(new review)
http://relativity.livingreviews.org/Articles/lrr-2008-5/
http://www.slac.stanford.edu/spires/find/hep/www?j=00222,11,5

Fractal properties of quantum spacetime (+M)
Dario Benedetti
http://arxiv.org/abs/0811.1396
http://arxiv.org/cits/0811.1396

The Nonperturbative Quantum de Sitter Universe (m)
J. Ambjorn, A. Goerlich, J. Jurkiewicz, R. Loll
http://arxiv.org/abs/0807.4481
http://arxiv.org/cits/0807.4481

Motion of a “small body” in non-metric gravity (M)
Kirill Krasnov
http://arxiv.org/abs/0812.3603
http://arxiv.org/cits/0812.3603