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gr-qc2025
Pseudospectrum and (in)stability of black hole total transmission modes
Yu-Sen Zhou, Ming-Fei Ji, Liang-Bi Wu +1
Total transmission modes (TTMs) are modes with complex frequencies that propagate across a black hole spacetime without reflection. Recently, it is found that suitably tailored tim…
gr-qc2025
Exceptional line and pseudospectrum in black hole spectroscopy
Li-Ming Cao, Ming-Fei Ji, Liang-Bi Wu +1
We investigate the exceptional points (EPs) and their pseudospectra in black hole perturbation theory. By considering a Gaussian bump modification to the Regge-Wheeler potential wi…
gr-qc2025★ 7 cited
Pseudospectrum and time-domain analysis of the EFT corrected black holes
Li-Ming Cao, Ming-Fei Ji, Liang-Bi Wu +1
We study the linear perturbations of a spherically symmetric black hole corrected by dimension-6 terms in the effective field theory (EFT) of gravity. The solution is asymptoticall…