A bound on energy extraction (and hairiness) from superradiance
Carlos A. R. Herdeiro,
Eugen Radu,
Nuno M. Santos
Abstract:The possibility of mining the rotational energy from black holes has far-reaching implications. Such energy extraction could occur even for isolated black holes, if hypothetical ultralight bosonic particles exist in Nature, leading to a new equilibrium state -a black hole with synchronised bosonic hair -whose lifetime could exceed the age of the Universe. A natural question is then: for an isolated black hole and at maximal efficiency, how large is the energy fraction that can be extracted from a Kerr black ho… Show more
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