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Reflections on the Energy of Black Holes

Authors
  • Dray, Tevian
  • Rovelli, Carlo
Type
Preprint
Publication Date
Mar 17, 2019
Submission Date
Mar 17, 2019
Identifiers
DOI: 10.1142/S0218271819440048
Source
arXiv
License
Yellow
External links

Abstract

Inside a black hole, there is no local way to say which side of a sphere is the inside, and which is the outside. One can easily be gulled by this fact into mixing up the sign of the energy. We lead the reader astray with a na\"ive treatment of the energy of a null shell in black hole spacetimes. We then resolve the confusion, showing that global, rather than local, considerations offer good guidance.

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