From the 1 of 11 linked papers with an AI index.
11 papers
The entropy of dynamical black holes deviating from electrovacuum in second order
Wen-Tao Fu, Ming-Fei Ji, Yu-Sen Zhou +1
The paper analyzes how the entropy of dynamical black holes in Einstein‑Maxwell theory relates to the area of their apparent horizons up to second‑order perturbations, introducing…
The entropy of black hole under second-order deviation from equilibrium
Wen-Tao Fu, Ming-Fei Ji, Yu-Sen Zhou +1
We investigate the entropy of a dynamical black hole arising from second-order perturbations of a general stationary background with a bifurcate Killing horizon. Using Gaussian nul…
Pseudospectrum and (in)stability of black hole total transmission modes
Yu-Sen Zhou, Ming-Fei Ji, Liang-Bi Wu +1
Total transmission modes (TTMs) are modes with complex frequencies that propagate across a black hole spacetime without reflection. Recently, it is found that suitably tailored tim…
Exceptional line and pseudospectrum in black hole spectroscopy
Li-Ming Cao, Ming-Fei Ji, Liang-Bi Wu +1
We investigate the exceptional points (EPs) and their pseudospectra in black hole perturbation theory. By considering a Gaussian bump modification to the Regge-Wheeler potential wi…
Waveform stability for the piecewise step approximation of Regge-Wheeler potential
Liang-Bi Wu, Libo Xie, Yu-Sen Zhou +2
By interpreting the difference between the original Regge-Wheeler potential and its piecewise step approximation as perturbative effects induced by the external environment of the…
Virtual absorption modes of Schwarzschild-de Sitter spacetimes in semi-open systems
Liang-Bi Wu, Yu-Sen Zhou, Zhe Yu +2
We present a study of virtual absorption modes (VAMs) in Schwarzschild-de Sitter (SdS) spacetime under semi-open boundary conditions, where the VAMs correspond to total transmissio…