How big is a black hole?
General Relativity and Quantum Cosmology
2015-03-25 v3
Abstract
The 3d volume inside a spherical black hole can be defined by extending an intrinsic flat-spacetime characterization of the volume inside a 2-sphere. For a collapsed object, the volume grows with time since the collapse, reaching a simple asymptotic form, which has a compelling geometrical interpretation. Perhaps surprising, it is large. The result may have relevance for the discussion on the information paradox.
Keywords
Cite
@article{arxiv.1411.2854,
title = {How big is a black hole?},
author = {Marios Christodoulou and Carlo Rovelli},
journal= {arXiv preprint arXiv:1411.2854},
year = {2015}
}
Comments
7 pages, 5 figures. References added