TY - JOUR T1 - Dynamical system approach to the spectral instability of black holes under localized potential perturbations JO - Physical Review D UR - https://doi.org/10.1103/x3pt-ds74 PY - 2026/05/29 AU - Torres T AU - Dolan SR ED - DO - DOI: 10.1103/x3pt-ds74 PB - American Physical Society (APS) VL - 113 IS - 10 Y2 - 2026/06/10 ER -