Kerr to Schwarzschild to white transition

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Discussion Overview

The discussion centers on the theoretical union of two concepts: the "Kerr to Schwarzschild transition during thermal death" and the "black to white transition" as described in loop quantum gravity (LQG). Participants explore whether these results can be integrated and if the necessary conditions for such transitions have existed or will exist in the universe.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants inquire about the theoretical possibility of uniting the Kerr to Schwarzschild transition with the black to white transition.
  • One participant asserts that a transition to a white hole is impossible, claiming it represents the beginning of time and is always in the past.
  • Another participant requests references for the proposed transitions, indicating a need for supporting literature.
  • Some participants emphasize that the discussion should focus on the semiclassical Kerr to Schwarzschild transition, distancing it from quantum gravity discussions.
  • There is a contention regarding the appropriateness of discussing semiclassical results in the current forum, with some asserting it falls outside the scope of classical relativity.
  • One participant challenges the assertion that a transition to a white hole is impossible, suggesting that the previous claim is not accurate.
  • A moderator intervenes, indicating the thread is closed for moderation until valid references are provided for the discussed results.

Areas of Agreement / Disagreement

Participants express disagreement on the feasibility of transitioning to a white hole, with some asserting it is impossible while others challenge this view. The discussion remains unresolved regarding the integration of the two theoretical results and the appropriateness of the forum for such discussions.

Contextual Notes

Participants highlight limitations regarding the definitions and scope of semiclassical versus classical discussions, as well as the need for references to support claims made in the thread.

javisot20
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TL;DR
Is ther a probability greater than 0 that a "Kerr to Schwarzschild to white transition" will occur during the thermal death of the universe?
I ask about the union of two different results,

-"Kerr to Schwarzschild transition during the thermal death", the idea of the complete loss of rotation of a black hole before evaporating, a result that I will assume is classic (semiclassic)

-"Black to white transition", known results of LQG where a Schwarzschikd black hole transitions to a Schwarzschild white hole.

I ask if from a theoretical point of view both results can be united, and then ask if the ideal conditions for such a transition to occur in the universe have ever existed or will exist.
 
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You cannot transition to a white hole. A white hole is the beginning of time. It is always in the past, never the future.
 
Last edited:
javisot20 said:
-"Kerr to Schwarzschild transition during the thermal death", the idea of the complete loss of rotation of a black hole before evaporating, a result that I will assume is classic (semiclassic)

-"Black to white transition", known results of LQG where a Schwarzschikd black hole transitions to a Schwarzschild white hole.
Do you have references for either of these?
 
javisot20 said:
known results of LQG
DIscussions of quantum gravity belong in the Beyond the Standard Models forum, not this one.
 
Is not a discussion about quantum gravity, i'm not discussing the LQG result. The result I need to discuss is "Kerr to Schwarzschild transition", which is a semiclassical result.
The black to white transition of LQG is a well-know result that would we simply couple to the other result, but is not the central point of the doubt.

Basically the transition is achieved trought quantum effects describe by LQG, but I repeat, this is not my doubt.
 
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Dale said:
You cannot transition to a white hole. A white hole is the beginning of time. It is always in the past, never the future.
This is not the doubt, and is not true.
 
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javisot20 said:
Is not a discussion about quantum gravity, i'm not discussing the LQG result. The result I need to discuss is "Kerr to Schwarzschild transition", which is a semiclassical result.
"Semiclassical" is still out of scope in this forum. This is the special and general relativity forum, which means fully classical, not "semiclassical".

javisot20 said:
The black to white transition of LQG is a well-know result
If so, then you should have no trouble providing the reference that I have asked for, as you are obligated to do according to the rules that you signed up to when you joined PF.

javisot20 said:
This is not the doubt, and is not true.
In this forum, it is. See above.
 
@javisot20 I have closed this thread for moderation for the time being. If you have a reference for the two results you say you want to combine, please PM them to me. If they look reasonable, I will move this thread to the appropriate forum and reopen it. If you are not able to provide valid references as a basis for discussion, this thread will remain closed.
 
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