1 citations · 2 across the 9 of their papers we have counts for
10 papers
Identifying Exceptional Points in Black Hole Ringdowns
Zhen-Xiao Zhang, Chen Lan, Yi Wang
Ringdown spectroscopy probes black hole (BH) dynamics, and exceptional points (EPs) can reveal underlying degrees of freedom. We develop a procedure to identify EPs in ringdowns us…
Darboux Isospectrality Constraints on Quasinormal Modes Deformed by Bumps
Zhen-Xiao Zhang, Chen Lan, Yan-Gang Miao
A localized Gaussian or Pöschl-Teller bump is widely used to probe the sensitivity of Schwarzschild quasinormal modes, where it is typically added to both the Regge-Wheeler and Zer…
Kubo-Martin-Schwinger conditions for non-Hermitian systems
Chen Lan, Luyao Ma, Hao Yang
We investigate the extension of the Kubo--Martin--Schwinger (KMS) thermal equilibrium condition to bounded non-Hermitian Hamiltonians with real spectra and biorthogonal eigensystem…
Parametric resonance amplification of gravitational waves in dynamical Chern-Simons gravity
Han-Wen Hu, Chen Lan, Zong-Kuan Guo
Within the effective field theory of dynamical Chern-Simons (dCS) gravity, we study parametric resonance amplification of gravitational waves driven by an oscillating environmental…
No-Go Theorem for Singularity Resolution
Zhen-Xiao Zhang, Chen Lan, Yan-Gang Miao
We prove a No-Go theorem for singularity resolution in homogeneous, spatially flat gravitational collapse: within this sector, quantum corrections introduced solely as non-vanishin…
Comment on "Black holes in gravity"
Zhen-Xiao Zhang, Chen Lan, Yan-Gang Miao
In the work [Phys.Rev.D 105 (2022) 2, 024042], D'Ambrosio et al. investigated spherically symmetric black hole solutions in gravity, where several solutions satisfy…
The impact of plunging matter on black-hole waveform
Ying-Lei Tian, Hao Yang, Chen Lan +1
In this work, we introduce a novel framework to investigate ringdown gravitational waveforms in the presence of dynamical matter fields outside the horizon of a black hole. We syst…
Quasinormal modes of regular black holes surrounded by skewed dark matter distributions
Chen Lan, Ying-Lei Tian, Hao Yang +2
Regular black holes, nonsingular solutions to gravitational collapse with quantum corrections, offer a compelling alternative to classical black holes with curvature singularities.…
Finite Curvature Construction of Regular Black Holes and Quasinormal Mode Analysis
Chen Lan, Zhen-Xiao Zhang, Hao Yang
We develop a class of regular black holes by prescribing finite curvature invariants and reconstructing the corresponding spacetime geometry. Two distinct approaches are employed:…
Comparison of Quasinormal Modes of Black Holes in and Gravity
Zhen-Xiao Zhang, Chen Lan, Yan-Gang Miao
We investigate the quasinormal modes of static and spherically symmetric black holes in vacuum within the framework of gravity, and com…