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arXiv · hep-th/0204005

Trapped surfaces, horizons and exact solutions in higher dimensions

J. M. M. Senovilla
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Abstract

A very simple criterion to ascertain if (D-2)-surfaces are trapped in arbitrary D-dimensional Lorentzian manifolds is given. The result is purely geometric, independent of the particular gravitational theory, of any field equations or of any other conditions. Many physical applications arise, a few shown here: a definition of general horizon, which reduces to the standard one in black holes/rings and other known cases; the classification of solutions with a (D-2)-dimensional abelian group of motions and the invariance of the trapping under simple dimensional reductions of the Kaluza-Klein/string/M-theory type. Finally, a stronger result involving closed trapped surfaces is presented. It provides in particular a simple sufficient condition for their absence.

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J. M. M. Senovilla. 2002-05-18. Trapped surfaces, horizons and exact solutions in higher dimensions. https://doi.org/10.1088/0264-9381%2F19%2F12%2F101

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