Rotating/overextreme Planck BH?

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SUMMARY

The discussion centers on emerging theories of black holes (BH), specifically "Planck stars" and the concept of no Hawking radiation leading to a slow-motion bounce. It raises questions about traditional BH puzzles such as rotating BHs, overextreme BHs, and naked singularities, and whether these new theories support Einstein-Cartan theory over classical General Relativity (GR). Notable figures like Carlo Rovelli and Hal Haggard are involved in ongoing research and seminars related to these topics, indicating a vibrant academic discourse surrounding these theories.

PREREQUISITES
  • Understanding of General Relativity (GR)
  • Familiarity with black hole theories, including Hawking radiation
  • Knowledge of Einstein-Cartan theory
  • Awareness of quantum gravity concepts, specifically Planck stars
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  • Research the implications of Planck stars on black hole singularity theories
  • Explore the differences between Einstein-Cartan theory and classical General Relativity
  • Investigate the latest papers on rotating and overextreme black holes
  • Attend seminars or lectures by Carlo Rovelli and Hal Haggard for firsthand insights
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Physicists, cosmologists, and researchers interested in theoretical physics, particularly those focused on black hole research and quantum gravity theories.

tzimie
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I see there are new BH theories: "Planck stars" and "no Hawking radiation but a bounce in slow motion"

What's about old BH puzzles from that point of view: rotating BH, overextreme BH, naked singularities? Do these theories favor Einstein-Cartan over classic GR?
 
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tzimie said:
I see there are new BH theories: "Planck stars" and "no Hawking radiation but a bounce in slow motion"

What's about old BH puzzles from that point of view: rotating BH, overextreme BH, naked singularities? Do these theories favor Einstein-Cartan over classic GR?

Tzimie, I was hoping someone else with more information would answer your question, but that hasn't happened so far. I see lots of papers coming out all the time in which the BH is nonsingular with the singularity replaced by a bounce, but I have not see any of them treating the special cases you mention!

Carlo Rovelli will be giving 3 seminar talks on Planck star model of BH--the slow motion bounce ending in gamma ray burst (GRB). Two in September: at ISAS Trieste, and at Uni Roma. One online at the ILQGS on 14 October.
http://www.sissa.it/app/esqg2014/
http://ctcqg2014.relativerest.org/
http://relativity.phys.lsu.edu/ilqgs/
Today his co-author Hal Haggard is giving a talk at UC Berkeley. I plan to attend. Maybe I will know a little more by the end of the day and be better able to reply to you.

Here is the ILQGS schedule for Fall 2014, slides and audio are posted as the talks are delivered in case you want to watch any.
Code: 
Sep 2	 [B]Casimir effect on a quantum geometry[/B]	 Javier Olmedo	 LSU
Sep 16   [B]Cov LQG: classical action, phase space & gauge symmetries[/B]  Wolfgang Wieland PSU
Sep 30	 TBA	 Brajesh Gupt	 PSU
Oct 14	 [B]White holes[/B]	 Carlo Rovelli	 CNRS Marseille
Oct 28	 [B]New applications for LQG[/B]	 Jerzy Lewandowski	 University of Warszaw
Nov 11	 [B]Lorentz transformations from abstract quantum theory[/B]	 Philip Hoehn  PI
Nov 25	 TBA	 Derek Wise	 FAU Erlangen
Dec 9	 [B]Invariance of Connections and Measures in LQC[/B]  Maximilian Hanusch Uni Paderborn
 

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