A short note on the Love number of extremal Reissner-Nordstrøm and Kerr-Newman black holes

Alex Kehagias; Davide Perrone; Antonio Riotto

Physics Letters B (Dec 2024)

A short note on the Love number of extremal Reissner-Nordstrøm and Kerr-Newman black holes

Alex Kehagias,
Davide Perrone,
Antonio Riotto

Affiliations

Alex Kehagias: Physics Division, National Technical University of Athens, Athens, 15780, Greece
Davide Perrone: Department of Theoretical Physics and Gravitational Wave Science Center, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland; Corresponding author.
Antonio Riotto: Department of Theoretical Physics and Gravitational Wave Science Center, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland

Journal volume & issue: Vol. 859
p. 139109

Abstract

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We provide a simple proof of why the Love number vanishes for extremal Reissner-Nordstrøm and Kerr-Newman black holes. The argument is based on a conformal inversion isometry of the spacetime connecting the horizon with large distances.

Published in Physics Letters B

ISSN: 0370-2693 (Print); 1873-2445 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/physics-letters-b/

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