Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2011-05-10
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Write-up of talks given at BSCG XIV; 50 pages, 6 figures
Scientific paper
I review elements of the foundations of black-hole theory with attention to problematic issues, and describe some techniques which either seem to help with the difficulties or at least investigate their scope. The definition of black holes via event horizons has been problematic because it depends on knowing the global structure of space-time; often attempts to avoid this (e.g. apparent horizons) require knowledge of the interior geometry. I suggest studying instead the holonomy relating the exterior neighborhood of the incipient horizon to the regime of distant observers; at least in the spherically symmetric case, this holonomy will develop certain universal features, in principle observable from signals emitted from infalling objects. I discuss the theory of quantum fields in curved space-time, and the difficulties with Hawking's prediction of black-hole radiation. I then show that the usual, very natural, theory of quantum fields in curved space-time runs into difficulties when applied to measurement problems, interactions, zero-point effects and stress-energies. I suggest that we take seriously the possibility that this theory, for all its naturalness, may not be quite right.
No associations
LandOfFree
Black holes reconsidered does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Black holes reconsidered, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Black holes reconsidered will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-280549