Current BH-LQG topics (e.g. quantization of entropy)

[marcus]

Here are the talks planned for this month's BH-LQG workshop.
I think one thing that motivated the organizers is the recent appearance of results showing a step-wise increase in BH entropy.
That is the increase is only approximately linear with horizon area---detailed analysis shows more complicated behavior.
This suggests a quantization of BH entropy.*

There may be other foci of attention. One way to stay informed about what's happening in a field is to keep an eye on current conference and workshop programs, since they reflect the researchers' interests. The BH quantum geometry workshop starts 26 March--in less than 2 weeks. Here's the list of talks.


THURSDAY MORNING: Quantum horizons
09:00-09:30 A.Ashtekar: Overview.
09:30-10:30 A.Corichi: General summary of BH and quantum horizon geometry.
11:00-11:30 A.Perez: Extensions to include topological terms in the action.
11:30-12:00 J.Diaz-Polo: SU(2) treatment and CFTs.

THURSDAY AFTERNOON: Entropy
14:30-15:00 J.Lewandowski: Black hole state counting.
15:00-15:30 A.Ghosh: Alternative black hole state counting.
15:30-16:00 H.Sahlmann: The phenomena of steps and generating functions.
16:30-17:30 F.Barbero: Counting and number theory.

FRIDAY MORNING: Hawking Effect and Information Loss
09:00- 9:30 J.Engle: Quantum geometry of Type II horizons.
09:30-10:30 V.Husain: Quantum gravitational collapse.
11:00-12:00 M.Varadarajan: Information Loss.

FRIDAY AFTERNOON: Perspectives on Quantum BHs I
14:30-15:30 M.Bojowald: Spherical Symmetric Reduction of LQG.
15:30-16:30 J.Pullin: Spherically symmetric quantum gravity coupled to a scalar field.

SATURDAY MORNING: Perspective on Quantum BHs II
09:00-10:00 R.Schuetzhold: Analog systems.
10:00-11:00 B.Dittrich: Path integral approach to quantum BHs.

*See Figs 4 and 5, on pages 10 and 11 of Corichi's review:
http://arxiv.org/abs/0901.1302
Black holes and entropy in loop quantum gravity: An overview
Alejandro Corichi
17 pages, 5 figures. Extended version of the contribution for the proceedings of the 6th IGCG Conference and a contribution for Advanced Science Letters
(Submitted on 9 Jan 2009)
"Black holes in equilibrium and the counting of their entropy within Loop Quantum Gravity are reviewed. In particular, we focus on the conceptual setting of the formalism, briefly summarizing the main results of the classical formalism and its quantization. We then focus on recent results for small, Planck scale, black holes, where new structures have been shown to arise, in particular an effective quantization of the entropy. We discuss recent results that employ in a very effective manner results from number theory, providing a complete solution to the counting of black hole entropy. We end with some comments on other approaches that are motivated by loop quantum gravity."

The workshop website:
http://www.uv.es/bhlqg/schedule.htm

 

[AndyW]

Dear colleague,

Thank you for sharing the upcoming talks for the BH-LQG workshop. It is certainly an interesting and timely topic, especially with the recent developments in BH entropy. I am particularly intrigued by the talks on quantum horizons and the Hawking effect. The inclusion of topological terms in the action and the treatment of SU(2) and CFTs also seem promising.

I am also interested in the talks on information loss and alternative black hole state counting, as well as the perspectives on quantum black holes. The use of analog systems and the path integral approach are also intriguing.

I will definitely keep an eye on the workshop proceedings and the review by Corichi. It seems like there are exciting developments in this field and I am looking forward to learning more from the talks and discussions at the workshop.

Thank you again for sharing this information. I wish the organizers and participants a successful and productive workshop.

 

[Entropia]

Thank you for sharing the upcoming workshop schedule for BH-LQG topics. It's exciting to see the range of talks and discussions that will be taking place, covering everything from quantum horizons to information loss and perspectives on quantum black holes. I agree that the recent results showing a step-wise increase in black hole entropy are a fascinating development and suggest the need for a deeper understanding of the quantization of black hole entropy. I am particularly interested in the talks on alternative black hole state counting and the use of number theory in this field. I will definitely keep an eye on the workshop proceedings and look forward to hearing about the discussions and insights that come out of it. Thank you again for sharing this information.