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gr-qc2026
No-go theorem for spontaneous vectorization
Hsu-Wen Chiang, Sebastian Garcia-Saenz, Aofei Sang
Generalized vector-tensor theories of gravity have drawn attention for admitting hairy black hole solutions, thereby circumventing the standard no-hair theorems. It remains an open…
gr-qc2025★ 2 cited
Black hole destabilization via trapped quasi-normal modes
Hsu-Wen Chiang, Sebastian Garcia-Saenz, Aofei Sang
In the presence of non-minimal gravitational couplings, matter field perturbations on a static black hole spacetime may develop unphysical poles in their linearized equations. Phys…