Asymptotically de Sitter black holes have nonzero tidal Love numbers

Sreejith Nair, Sumanta Chakraborty, and Sudipta Sarkar
Phys. Rev. D 109, 064025 – Published 12 March 2024
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Abstract

The Love numbers of compact objects quantify their tidal deformability against external perturbations. It is expected that the Love numbers of asymptotically flat black holes (BHs) in general relativity are identically zero. We show that quite contrary to common expectations, the tidal Love numbers of asymptotically de Sitter black holes are nonzero.

  • Received 19 January 2024
  • Accepted 19 February 2024

DOI:https://doi.org/10.1103/PhysRevD.109.064025

© 2024 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Classical black holesGeneral relativityGravitation
Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Sreejith Nair1,*, Sumanta Chakraborty2,†, and Sudipta Sarkar1,‡

  • 1Indian Institute of Technology, Gandhinagar, Gujarat-382355, India
  • 2School of Physical Sciences, Indian Association for the Cultivation of Science, Kolkata-700032, India

  • *sreejithnair@iitgn.ac.in
  • †tpsc@iacs.res.in
  • ‡sudiptas@iitgn.ac.in

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Issue

Vol. 109, Iss. 6 — 15 March 2024

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