Horowitz Gary T, Kolanowski Maciej, Remmen Grant N, Santos Jorge E
Department of Physics, University of California, Santa Barbara, California 93106, USA.
Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland.
Phys Rev Lett. 2023 Sep 1;131(9):091402. doi: 10.1103/PhysRevLett.131.091402.
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 the gravitational action. We show that in the presence of these terms, asymptotically flat extremal rotating black holes have curvature singularities on their horizon. Furthermore, near-extremal black holes can have large yet finite tidal forces for infalling observers. In addition, we consider five-dimensional extremal charged black holes and show that higher-curvature terms can have a large effect on the horizon geometry.
我们表明，极端克尔黑洞是新物理的灵敏探测器。预计对广义相对论的弦论或量子修正会在引力作用中产生更高曲率项。我们表明，在这些项存在的情况下，渐近平直的极端旋转黑洞在其视界上存在曲率奇点。此外，对于下落的观察者而言，近极端黑洞可能具有大但有限的潮汐力。另外，我们考虑五维极端带电黑洞，并表明更高曲率项会对视界几何产生很大影响。
