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gr-qc2026
Schrödinger perturbation theory for black hole quasinormal modes
Jacopo Lestingi, Laura Sberna, Stephen R. Green
Deviations from vacuum general relativity (such as modified theories or the presence of an environment) produce small shifts in black hole quasinormal mode (QNM) spectra. These eff…
gr-qc2026
Kahler decoupling for Kerr perturbations
Stephen R. Green, Kirill Krasnov, Adam Shaw
The Euclidean Kerr metric is conformal, in two distinct ways, to a Kahler metric, with conformal factors determined by the repeated eigenvalue of the two chiral halves of the Weyl…