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gr-qc2026
Early-Time Nonlinear Growth in an Unstable Q-Ball Hairy Black Hole
Lang Cheng, Guangzhou Guo, Peng Wang +1
Early-time evolution away from an unstable equilibrium in a nonlinear system is often expected to be governed by the associated linear instability. Combining full nonlinear evoluti…
gr-qc2026
Exceptional Points in Quasinormal Spectra of Hairy Black Holes
Lang Cheng, Xiaobo Guo, Yuhan Li +2
Exceptional points (EPs) in quasinormal mode (QNM) spectra are non-Hermitian degeneracies at which both the eigenvalues and eigenfunctions coalesce. In this paper, we identify an E…