Resonant Excitation of Quasinormal Modes of Black Holes
arXiv:2407.15191 · doi:10.1103/PhysRevLett.134.141401
Abstract
We elucidate that a distinctive resonant excitation between quasinormal modes (QNMs) of black holes emerges as a universal phenomenon at an avoided crossing near the exceptional point through high-precision numerical analysis and theory of QNMs based on the framework of non-Hermitian physics. This resonant phenomenon not only allows us to decipher a long-standing mystery concerning the peculiar behaviors of QNMs but also stands as a novel beacon for characterizing black hole spacetime geometry. Our findings pave the way for rigorous examinations of black holes and the exploration of new physics in gravity.
10 pages, 4 figures, dataset available at https://doi.org/10.5281/zenodo.12696857 ; matches published version
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