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arXiv · 1411.2854

How big is a black hole?

Marios Christodoulou·Carlo Rovelli
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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.

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Marios Christodoulou, Carlo Rovelli. 2015-03-16. How big is a black hole?. https://doi.org/10.1103/physrevd.91.064046

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