14 citations · 14 across the 6 of their papers we have counts for
8 papers
Dynamical thin shells in black hole ringdown
Han-Wen Hu, Chen Lan, Zong-Kuan Guo
We study how a radially oscillating thin shell outside a black hole (BH) affects gravitational wave ringdown and derive matching conditions for polar and axial perturbations from t…
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…
Waveform stability of black hole ringdown with stochastic horizon structure
Han-Wen Hu, Cheng-Jun Fang, Zong-Kuan Guo
We examine the robustness of black hole ringdown to stochastic horizon-scale structure within an effective field framework in a proof-of-principle Schwarzschild setup.Consistent wi…
Low-finesse scattering and non-stationary dispersive dynamics of gravitational wave echoes
Han-Wen Hu, Cheng-Jun Fang, Zong-Kuan Guo
We study environmental echoes induced by a weak potential barrier outside a Schwarzschild black hole. In the low-finesse limit, the time domain response is governed by a sequence o…
One-loop corrections to infrared GWs is forbidden by symmetries
Cheng-Jun Fang, Han-Wen Hu, Zong-Kuan Guo
Small-scale scalar perturbations amplified during inflation can induce primordial gravitational waves through tensor-scalar interactions. A long-standing controversial issue is whe…
Bispectrum of induced gravitational waves in the poltergeist mechanism
Han-Wen Hu, Cheng-Jun Fang, Zhen-Min Zeng +1
In the poltergeist mechanism the enhancement of induced gravitational waves (GWs) occurs due to a sudden transition from an early matter-dominated era to the radiation-dominated er…
Spectrum of third-order tensor perturbations induced by excited scalar fields
Cheng-Jun Fang, Zhi-Zhang Peng, Han-Wen Hu +1
We calculate for the first time the third-order spectrum of gravitational waves sourced by the amplified scalar field perturbations during inflation using the in-in formalism, and…
Thermodynamics for regular black holes as intermediate thermodynamic states and quasinormal frequencies
Bai-Hao Huang, Han-Wen Hu, Liu Zhao
The thermodynamics for regular black holes (RBHs) is considered under the restricted phase space (RPS) formalism. It is shown that the RPS formalism seems to hold for RBHs, however…