4 papers
Early-Time Nonlinear Growth in an Unstable Q-Ball Hairy Black Hole
Lang Cheng, Guangzhou Guo, Peng Wang +1
Early-time evolution away from an unstable equilibrium in a nonlinear system is often expected to be governed by the associated linear instability. Combining full nonlinear evoluti…
Exceptional Points in Quasinormal Spectra of Hairy Black Holes
Lang Cheng, Xiaobo Guo, Yuhan Li +2
Exceptional points (EPs) in quasinormal mode (QNM) spectra are non-Hermitian degeneracies at which both the eigenvalues and eigenfunctions coalesce. In this paper, we identify an E…
Rotating Black Holes in Einstein-Born-Infeld Theory
Lang Cheng, Peng Wang
We numerically construct a family of stationary, axisymmetric black hole solutions in Einstein-Born-Infeld theory, incorporating both electric charge and rotation. Our results indi…
Spin-induced Scalarized Black Holes in Einstein-Maxwell-scalar Models
Lang Cheng, Guangzhou Guo, Peng Wang +1
We construct spin-induced scalarized black hole solutions in a class of Einstein-Maxwell-scalar models, where a scalar field is non-minimally coupled to the electromagnetic field.…