A Short Note on the Love Number of Extremal Reissner-Nordstrom and Kerr-Newman Black Holes
arXiv:2406.19262
Abstract
We provide a simple proof of why the Love number vanishes for extremal Reissner-Nordstrom and Kerr-Newman black holes. The argument is based on a conformal inversion isometry of the spacetime connecting the horizon with large distances.
6 pages