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