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Asymptotically de-Sitter black holes have non-zero tidal Love numbers

General Relativity and Quantum Cosmology 2024-05-09 v1

Abstract

Love numbers of compact objects quantify their tidal deformability against external perturbations. It is expected that 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 non-zero.

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Cite

@article{arxiv.2401.06467,
  title  = {Asymptotically de-Sitter black holes have non-zero tidal Love numbers},
  author = {Sreejith Nair and Sumanta Chakraborty and Sudipta Sarkar},
  journal= {arXiv preprint arXiv:2401.06467},
  year   = {2024}
}

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18 pages