3 papers
hep-th2024
Smooth extremal horizons are the exception, not the rule
Gary T. Horowitz, Jorge E. Santos
We show that the general charged, rotating black hole in five-dimensional Einstein-Maxwell theory has a singular extremal limit. Only the known analytic solutions with exactly zero…
hep-th2024
Extremal Kerr black holes as amplifiers of new physics
Gary T. Horowitz, Maciej Kolanowski, Grant N. Remmen +1
We show that extremal Kerr black holes are sensitive probes of new physics. Stringy or quantum corrections to general relativity are expected to generate higher-curvature terms in…
hep-th2024
Sudden breakdown of effective field theory near cool Kerr-Newman black holes
Gary T. Horowitz, Maciej Kolanowski, Grant N. Remmen +1
It was recently shown that (near-)extremal Kerr black holes are sensitive probes of small higher-derivative corrections to general relativity. In particular, these corrections prod…