Extremal black hole
From Wikipedia, the free encyclopedia
|
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. This is a consequence of the BPS bound. Such black holes are stable and emit no Hawking radiation. Their black hole entropy can be calculated in string theory. |
