I am confused with the fact that nearly all recent work about black holes in canonical quantum gravity is based on the definition of http://relativity.livingreviews.org/open?pubNo=lrr-2004-10&page=articlesu1.html [Broken]. These seam to be a generalization of event horizons, and, it seams that their definition does not need of asymptotic flatness. But, if asymptotic flatness is not needed, then there is not always a notion of mass and even no Hawking temperature and no thermodynamics. So can someone explain a bit the definition of isolated horizons and why it is so useful?(adsbygoogle = window.adsbygoogle || []).push({});

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# Isolated horizons

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