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A counter-example to a recent version of the Penrose conjecture

arXiv:0911.0883 · doi:10.1088/0264-9381/27/6/062001

Abstract

By considering suitable axially symmetric slices on the Kruskal spacetime, we construct counterexamples to a recent version of the Penrose inequality in terms of so-called generalized apparent horizons.

12 pages. Appendix added with technical details. To appear in Classical and Quantum Gravity