20 citations · 41 across the 20 of their papers we have counts for
20 papers
Reflectionless and echo modes in asymmetric Damour-Solodukhin wormholes
Wei-Liang Qian, Qiyuan Pan, Ramin G. Daghigh +2
It is understood that the echo waveforms in ultracompact objects can be regarded as composed mainly of the asymptotic high-overtone quasinormal modes, dubbed echo modes, which pred…
A Critical Point on the Hairy Black Hole Phase Boundary in the Improved Holographic Einstein-Maxwell-Dilaton Theory
Hong Guo, Wei-Liang Qian, Bean Wang
In this work, we investigate the hairy black hole solutions and their dual phase diagram in the improved holographic Einstein-Maxwell-Dilaton (EMD) model.From the gravitational per…
Spectral instability in modified Pöschl-Teller effective potential triggered by deterministic and random perturbations
Shui-Fa Shen, Guan-Ru Li, Ramin G. Daghigh +4
Owing to its substantial implications for black hole spectroscopy, spectral instability has attracted considerable attention in the literature. While the emergence of such instabil…
On Hyperboloidal Foliations in the Study of Black Hole Quasinormal Modes
Shui-Fa Shen, Guan-Ru Li, Xiao-Mei Kuang +5
In this work, we demonstrate that the hyperboloidal foliation technique, applied to the study of black hole quasinormal modes, where the spatial boundary is shifted from spacelike…
Asymptotic quasinormal modes, echoes, and black hole spectral instability: a brief review
Shui-Fa Shen, Guan-Ru Li, Ramin G. Daghigh +4
We present a short review of the analytical aspects of recent progress in the study of black hole spectral instability and its potential observational consequences. This topic, ins…
Novel black holes with scalar hair in the Einstein-Maxwell-Scalar Theory with positive coupling
Hong Guo, Wei-Liang Qian, Bean Wang
In this work, we find a new branch of hairy black hole solutions in the Einstein-Maxwell-Scalar (EMS) theory in four-dimensional asymptotically flat spacetimes. Different from spon…
Regge poles, grey body factors, and absorption cross sections for black hole metrics with discontinuity
Guan-Ru Li, Wei-Liang Qian, Qiyuan Pan +3
It was recently proposed by Rosato {\it et al.} and Oshita {\it et al.} that black hole greybody factors, as stable observables at relatively high frequencies, are more relevant qu…
Evolution of black hole echo modes and the causality dilemma
Ramin G. Daghigh, Guan-Ru Li, Wei-Liang Qian +1
It has been shown that black hole quasinormal modes are subject to spectral instability, typically triggered by metric perturbations. These perturbations, which can introduce a min…
Accelerating Stochastic Gravitational Wave Backgrounds Parameter Estimation in Pulsar Timing Arrays with Flow Matching
Bo Liang, Chang Liu, Tianyu Zhao +9
\Acp{PTA} are essential tools for detecting the \ac{SGWB}, but their analysis faces significant computational challenges. Traditional methods like \ac{MCMC} struggle with high-dime…
Cosmological Model Independent Constraints on Lorentz Invariance Violation with Updated Gamma-Ray Burst Observations: An Artificial Neural Network Approach
Jun Tian, Yu Pan, Shuo Cao +2
Searching for Lorentz invariance violation (LIV) using astrophysical sources such as gamma-ray bursts (GRBs) is crucial for probing quantum gravity. However, the dependence of LIV…
The underlying black hole phase transitions in an Einstein-Maxwell-dilaton model with a holographic critical point
Hong Guo, Xiao-Mei Kuang, Wei-Liang Qian
The Einstein-Maxwell-dilaton model exhibits a first-order phase transition curve that terminates at a holographic critical endpoint, offering intriguing insights into the phase dia…
Rapid Parameter Estimation for Extreme Mass Ratio Inspirals Using Machine Learning
Bo Liang, Hong Guo, Tianyu Zhao +11
Extreme-mass-ratio inspiral (EMRI) signals pose significant challenges in gravitational wave (GW) astronomy owing to their low-frequency nature and highly complex waveforms, which…
On the universality of instability in the fundamental quasinormal modes of black holes
Wei-Liang Qian, Guan-Ru Li, Ramin G. Daghigh +2
We elaborate on a criterion for the emergence of instability in the fundamental mode recently observed by Cheung {\it et al.}, as a universal phenomenon in the context of black hol…
Gravitational waves from extreme mass ratio inspirals in Kerr-MOG spacetimes
Xiongying Qiao, Zhong-Wu Xia, Qiyuan Pan +3
This work elaborates on a detailed analysis of the novel characteristics of gravitational waves (GWs) generated by extreme mass ratio inspirals (EMRIs) within the framework of modi…
On sensitivity of nucleus deformation on final-state flow harmonics
Henrique Mascalhusk, Dener S. Lemos, Otavio Socolowski +3
In this work, we explore the effect of deformation of the nuclei on collective flow in relativistic heavy-ion collisions. The parameter associated with the geometrical deformation…
On bifurcation and spectral instability of asymptotic quasinormal modes in the modified Pöschl-Teller effective potential
Guan-Ru Li, Wei-Liang Qian, Ramin G. Daghigh
The Pöchl-Teller effective potential mimics an asymptotically de Sitter black hole bounded by an event horizon and a cosmological one. Owing to the benefit of being analytically so…
Late-time tail and echoes of Damour-Solodukhin wormholes
Wei-Liang Qian, Qiyuan Pan, Bean Wang +1
Damour-Solodukhin wormholes are intriguing theoretical constructs, closely mimicking many properties of black holes. This study delves into two distinct characteristics of the wave…
Phase structure of holographic superconductors in an Einstein-scalar-Gauss-Bonnet theory with spontaneous scalarization
Hong Guo, Wei-Liang Qian, Bean Wang
Holographic superconductor phase transition and spontaneous scalarization are triggered by the instability of the underlying vacuum black hole spacetime. Although both hairy black…
Traversable Thin-shell Wormhole in the 4D Einstein-Gauss-Bonnet Theory
Peng Liu, Chao Niu, Wei-Liang Qian +2
This work investigates the spherically symmetric thin-shell wormhole solutions in four-dimensional Einstein-Gauss-Bonnet theory and explores their stabilities under radial, linear…
(Anti-) de Sitter Electrically Charged Black Hole Solutions in Higher-Derivative Gravity
Kai Lin, Wei-Liang Qian, A. B. Pavan +1
In this paper, static electrically charged black hole solutions with cosmological constant are investigated in an Einstein-Hilbert theory of gravity with additional quadratic curva…