Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-08-31
Physics
High Energy Physics
High Energy Physics - Theory
Programming errors fixed, numerical evidence for main claim strengthened; 23 pages, 8 figures; version to appear in Nuclear Ph
Scientific paper
Certain AdS black holes are "fragile", in the sense that, if they are deformed excessively, they become unstable to a fundamental non-perturbative stringy effect analogous to Schwinger pair-production [of branes]. Near-extremal topologically spherical AdS-Kerr black holes, which are natural candidates for string-theoretic models of the very rapidly rotating black holes that have actually been observed to exist, do represent a very drastic deformation of the AdS-Schwarzschild geometry. One therefore has strong reason to fear that these objects might be "fragile", which in turn could mean that asymptotically flat rapidly rotating black holes might be fragile in string theory. Here we show that this does not happen: despite the severe deformation implied by near-extremal angular momenta, brane pair production around topologically spherical AdS-Kerr black holes is always suppressed.
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