B GR and closeness to a black hole singularity

Randy Subers
Messages
14
Reaction score
1
TL;DR Summary
GR and closeness to a black hold singularity
Assume a Schwarzschild black hole. Near the event horizon other than Hawking radiation the behavior of matter and energy are fairly accuratly described by general relativity. How close can one get to the center (the singularity based on GR) before one must switch to a quantum gravity theory to provide accurate predictions?
 
Physics news on Phys.org
Nobody knows for sure. According to some theories (firewall, fuzzball, energetic curtain), quantum gravity has dramatic consequences already at the horizon. I have proposed a theory in which there is a quantum gravity core which grows as black hole shrinks due to evaporation: https://arxiv.org/abs/1505.04088
 
https://arxiv.org/pdf/2503.09804 From the abstract: ... Our derivation uses both EE and the Newtonian approximation of EE in Part I, to describe semi-classically in Part II the advection of DM, created at the level of the universe, into galaxies and clusters thereof. This advection happens proportional with their own classically generated gravitational field g, due to self-interaction of the gravitational field. It is based on the universal formula ρD =λgg′2 for the densityρ D of DM...
Many of us have heard of "twistors", arguably Roger Penrose's biggest contribution to theoretical physics. Twistor space is a space which maps nonlocally onto physical space-time; in particular, lightlike structures in space-time, like null lines and light cones, become much more "local" in twistor space. For various reasons, Penrose thought that twistor space was possibly a more fundamental arena for theoretical physics than space-time, and for many years he and a hardy band of mostly...

Similar threads

Replies
8
Views
3K
Replies
10
Views
3K
Replies
6
Views
2K
Replies
15
Views
5K
Replies
21
Views
5K
Replies
1
Views
2K
Back
Top