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Love symmetry

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arxiv 2209.02091 v1 pith:IFNQAI3N submitted 2022-09-05 hep-th astro-ph.HEgr-qchep-ph

Love symmetry

classification hep-th astro-ph.HEgr-qchep-ph
keywords lovesymmetryblackmathbbnearalgebraextremalholes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Perturbations of massless fields in the Kerr-Newman black hole background enjoy a (``Love'') SL$(2,\mathbb{R})$ symmetry in the suitably defined near zone approximation. We present a detailed study of this symmetry and show how the intricate behavior of black hole responses in four and higher dimensions can be understood from the SL$(2,\mathbb{R})$ representation theory. In particular, static perturbations of four-dimensional black holes belong to highest weight SL$\left(2,\mathbb{R}\right)$ representations. It is this highest weight property that forces the static Love numbers to vanish. We find that the Love symmetry is tightly connected to the enhanced isometries of extremal black holes. This relation is simplest for extremal charged spherically symmetric (Reissner-Nordstr\"om) solutions, where the Love symmetry exactly reduces to the isometry of the near horizon AdS$_2$ throat. For rotating (Kerr-Newman) black holes one is lead to consider an infinite-dimensional SL$\left(2,\mathbb{R}\right)\ltimes \hat U(1)_{\mathcal{V}}$ extension of the Love symmetry. It contains three physically distinct subalgebras: the Love algebra, the Starobinsky near zone algebra, and the near horizon algebra that becomes the Bardeen-Horowitz isometry in the extremal limit. We also discuss other aspects of the Love symmetry, such as the geometric meaning of its generators for spin weighted fields, connection to the no-hair theorems, non-renormalization of Love numbers, its relation to (non-extremal) Kerr/CFT correspondence and prospects of its existence in modified theories of gravity.

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Cited by 13 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Universal Closed Form for Dynamical Love Numbers of Black Holes

    hep-th 2026-06 conditional novelty 8.0

    Derives a universal closed-form expression for the dynamical response of Schwarzschild black holes using RG resummation and far-zone matching, verified via shell EFT to high orders.

  2. Wave-optics gravitational wave lensing in modified gravity

    gr-qc 2026-05 unverdicted novelty 8.0

    In a curvature-coupled propagation framework for modified gravity, gravitational-wave lensing in wave optics shows persistent infrared interactions that prevent the amplification factor from approaching unity at zero ...

  3. A Bound on the Dynamical Love Number

    gr-qc 2026-07 conditional novelty 7.0

    Schwarz–Pick applied to the rescaled retarded tidal response bounds dynamical Love numbers for neutron stars by the static Love number and spectral gap, and constrains black-hole tidal heating.

  4. Relaxation without ringdown for a compact object in modified gravity

    gr-qc 2026-07 unverdicted novelty 7.0

    A vector-supported compact object in modified gravity relaxes dissipatively without oscillatory ringdown because a hidden chiral symmetry converts perturbations into one-way transport.

  5. Axial tidal Love numbers of black holes in matter environments

    gr-qc 2026-05 unverdicted novelty 7.0

    Axial tidal Love numbers for black holes in anisotropic fluid environments are derived analytically and numerically, with non-compact support density profiles producing logarithmic terms that obstruct standard tidal m...

  6. Dynamical tidal Love numbers of black holes under generic perturbations: Connecting black hole perturbation theory with effective field theory

    gr-qc 2026-05 unverdicted novelty 7.0

    Dynamical tidal Love numbers for Kerr black holes are obtained to linear frequency order by matching EFT worldline couplings to black-hole perturbation solutions, including spin-induced mode mixing.

  7. 5-Dimensional Gravitational Raman Scattering: Scalar Wave Perturbations in Schwarzschild-Tangherlini Spacetime

    hep-th 2025-05 unverdicted novelty 7.0

    Derives closed 5D partial-wave Raman scattering amplitude via NS functions and computes non-vanishing dynamical ℓ=0 and static ℓ=1 scalar tidal Love numbers with RG running up to O(G²) for STBH.

  8. Resummation of Universal Tails in Gravitational Waveforms

    hep-th 2025-04 unverdicted novelty 7.0

    A universal anomalous dimension for multipole moments in GR is derived via two EFT methods and applied to resum short-distance logarithmic tails in binary gravitational waveforms.

  9. Tidal Response and Thermodynamics of Black Holes

    hep-th 2026-04 unverdicted novelty 6.0

    A new gauge-invariant effective action computes black hole Love numbers without Regge-Wheeler methods, and these numbers determine leading thermodynamic corrections under external perturbations.

  10. Axions Create Singularities on Extremal Horizons

    hep-th 2026-05 unverdicted novelty 5.0

    Axions cause singularities on the horizons of extremal rotating charged black holes for almost all axion mass and coupling values.

  11. Dynamical Tidal Response of Non-rotating Black Holes: Connecting the MST Formalism and Worldline EFT

    gr-qc 2025-11 unverdicted novelty 5.0

    Renormalized dynamical tidal response functions for non-rotating black holes in GR carry inevitable ambiguities from renormalization scheme and flow initial condition, yielding scheme-dependent dynamical tidal Love nu...

  12. Universal Ladder Structure Across Scales: From Quantum to Black Hole Physics

    gr-qc 2026-04 unverdicted novelty 4.0

    A symmetry-based litmus test identifies when physical systems governed by second-order ODEs possess ladder structures and constructs them, linking supersymmetric quantum mechanics to Kerr black-hole tidal responses.

  13. Love numbers of black holes and compact objects

    gr-qc 2026-04 unverdicted novelty 2.0

    A pedagogical review of Love numbers and tidal responses for black holes and compact objects in general relativity and extensions.