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gr-qc2026
Exceptional points and near-extremal boundary response in rotating BTZ black holes
Sheng Long, Yu Shi, Zhongwu Xia +4
We investigate whether the coalescence of long-lived quasinormal modes enhances the boundary response of rotating BTZ black holes. Using exact scalar solutions with mixed Robin bou…
gr-qc2026
Echoes and quasinormal modes for static loop quantum black bounces
Huajie Gong, Guoyang Fu, Shulan Li +3
We investigate scalar perturbations of the static loop quantum black bounce (LQBB) spacetime with multipole index , focusing on time-domain signals and fundamental quasinormal…