3 papers
gr-qc2026
Solving Hamiltonian Constraint Equation with Physics-Informed Neural Networks
Yu-Chen Zhou, Hao Ma, Zhoujian Cao +6
Numerical relativity (NR), solving Einstein equation numerically, plays an important role in source modelling for gravitational wave astronomy. Traditional methods for NR including…
gr-qc2025
Angular velocity of rotating black holes -- a new way to construct initial data for binary black holes
Shuanglin Huang, Xuefeng Feng, Yun-Kau Lau
Motivated by a geometric understanding of the angular velocity of a Kerr black hole in terms of a quasi-conformal map that describes a 2d Beltrami fluid flow, a new way to construc…
gr-qc2025
Relativistic excitation of compact stars
Zhiqiang Miao, Xuefeng Feng, Zhen Pan +1
In this work, we study the excitation of a compact star under the influence of external gravitational driving in the relativistic regime. Using a model setup in which a wave with c…