Why is black hole entropy affected by rotation?
Oct 21, 2022Citations per year
Abstract: (Springer)
It is well known that an asymptotically flat four-dimensional Kerr black hole has a smaller (specific) entropy than a Schwarzschild black hole of the same mass. We show here that the same is true if the temperature, rather than the mass, is held fixed; and we also show that an asymptotically AdS-Kerr black hole has a smaller specific entropy than an AdS-Schwarzschild black hole of the same temperature, except in a negligibly small class of special examples. The AdS-Kerr case is particularly interesting, because here the gauge-gravity duality applies; if we further accept that there is a useful analogy between the strongly coupled field theories dual to AdS black holes and the best-understood example of a strongly coupled fluid (the Quark-Gluon Plasma), then we can apply QGP theory to predict the behaviour of black hole entropy in this case. The prediction agrees with our study of AdS-Kerr entropy. The hope is that such results might lead ultimately to an identification of black hole microstates.Note:
- Added a useful reference (arXiv:2010.03575 [hep-th]); 32 pages, 12 figures
- AdS-CFT Correspondence
- Black Holes
- black hole: entropy
- dimension: 4
- dimension: 5
- black hole: Kerr
- black hole: Schwarzschild
- black hole: anti-de Sitter
- quark gluon: plasma
- gravitation: duality
References(77)
Figures(11)
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