3 papers
gr-qc2026
Deterministic Trust Regions for Finite-Window Black-Hole Spectroscopy in GW250114
Ruiliang Li
We study finite-window black-hole spectroscopy in the loud-event regime and ask when a multimode ringdown fit supports a stable common-remnant Kerr interpretation. Starting from wh…
math-ph2026
Two-mode dominance and deterministic parameter bias bounds for equatorial Kerr-de Sitter ringdown
Ruiliang Li
We study scalar waves on subextremal Kerr-de Sitter spacetimes in a compact slow-rotation regime and at a fixed overtone index. Working initially at a fixed cosmological constant $…
math-ph2026
Quantitative local recovery of Kerr-de Sitter parameters from high-frequency equatorial quasinormal modes
Ruiliang Li
We study an inverse resonance problem for the scalar wave equation on the Kerr-de Sitter family. In a compact subextremal slow-rotation regime and at a fixed overtone index, high-f…