3 papers
gr-qc2026
Causal Green function decomposition for quantum black hole seismology
Xi-Li Zhang, Jing Ren
The growing sensitivity of gravitational-wave detectors enables increasingly precise tests of black hole (BH) ringdown spectroscopy. BH quasinormal modes (QNMs) are, however, spect…
gr-qc2026
Model-agnostic search of gravitational wave echoes in LVK data
Di Wu, Xi-Li Zhang, Qing-Guo Huang +1
Gravitational wave echoes offer a unique probe of the near-horizon structure of astrophysical black holes, beyond the standard "black hole spectroscopy." Theoretical waveform predi…
hep-ph2026
Probing Boson Clouds with Supermassive Black Hole Binaries
Ximeng Li, Jing Ren, Xi-Li Zhang
Rotating black holes can generate boson clouds via superradiance when the boson's Compton wavelength is comparable to the black hole's size. In binary systems, these clouds can pro…