Abstract
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.
- Received 8 April 2023
- Accepted 27 June 2023
DOI:https://doi.org/10.1103/PhysRevLett.131.091402
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society
Physics Subject Headings (PhySH)
synopsis
synopsisNew Physics Magnified in Spinning Black Holes
Published 31 August 2023
A theoretical analysis suggests that certain rotating black holes might be sensitive probes of quantum gravity.
See more in Physics
