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Extremal black hole
In theoretical physics, an extremal black hole is a black hole with the minimal possible mass that can be compatible with the given charges and angular momentum.
In supersymmetric theories, extremal black holes are often supersymmetric, i.e. they are invariant under several supercharges. Such black holes are stable and emit no Hawking radiation. Their black hole entropy can be calculated in string theory.
Last updated: 08-22-2005 19:21:07
03-10-2013 05:06:04
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details