The general Penrose inequality: lessons from numerical evidence

Details The general Penrose inequality: lessons from numerical evidence The general Penrose inequality: lessons from numerical evidence

2004-12-21

arxiv.org/abs/gr-qc/0412100v2

Acta Phys.Polon. B36 (2005) 59-74

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Two formulae are corrected at the end of Sec. 6

Scientific paper

Formulation of the Penrose inequality becomes ambiguous when the past and future apparent horizons do cross. We test numerically several natural possibilities of stating the inequality in punctured and boosted single- and double- black holes, in a Dain-Friedrich class of initial data and in conformally flat spheroidal data.The Penrose inequality holds true in vacuum configurations for the outermost element amongst the set of disjoint future and past apparent horizons (as expected)and (unexpectedly) for each of the outermost past and future apparent horizons, whenever these two bifurcate from an outermost minimal surface, regardless of whether they intersect or remain disjoint. In systems with matter the conjecture breaks down only if matter does not obey the dominant energy condition.

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