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Time-domain analysis of scalar perturbations of Kerr--Newman black holes with Chern--Simons and Maxwell couplings
Abstract
To study the onset of scalarization, we investigate linear scalar perturbations around Kerr--Newman black holes in the Einstein-Chern-Simons-Maxwell-scalar theory with quadratic Chern--Simons (CS) coupling γ (γ̂=γ/M2) and Maxwell coupling η. For this purpose, we employ hyperboloidal Rácz--Tóth evolution and a stationary axisymmetric zero-mode computation. The resulting thresholds are compared with the time-domain response at representative points. For γ̂=0, we find two asymmetric threshold branches in η, while for γ̂=η, the two branches have opposite signs and unequal magnitudes. For unequal CS and Maxwell couplings, the two real threshold branches merge as the spin or CS coupling increases.
Related
- Perturbations of Kerr-Newman black holes: separation and mode stability
- Perturbations of a Schwarzschild black hole and Newman-Unti gauge
- Charge-regular formulation and radiative amplitudes of Kerr-Newman perturbations
- Separation of variables for coupled radiative perturbations of Kerr-Newman-de Sitter black holes
- Exact algebraic separation of the gravitoelectromagnetic perturbations of Kerr-Newman-(anti-)de Sitter black holes
BibTeX
@misc{chen2026timedomain,
title = {{Time-domain analysis of scalar perturbations of Kerr--Newman black holes with Chern--Simons and Maxwell couplings}},
author = {Yan-Ming Chen and Hyat Huang and Meng-Yun Lai and De-Cheng Zou and Yun Soo Myung and Ming Zhang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.06393},
eprint = {2610.06393},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.06393},
}
RIS
TY - UNPB
TI - Time-domain analysis of scalar perturbations of Kerr--Newman black holes with Chern--Simons and Maxwell couplings
AU - Yan-Ming Chen
AU - Hyat Huang
AU - Meng-Yun Lai
AU - De-Cheng Zou
AU - Yun Soo Myung
AU - Ming Zhang
PY - 2026
DA - 2026/10/05
PB - arXiv
DO - 10.48550/arxiv.2610.06393
UR - https://arxiv.org/abs/2610.06393
AB - To study the onset of scalarization, we investigate linear scalar perturbations around Kerr--Newman black holes in the Einstein-Chern-Simons-Maxwell-scalar theory with quadratic Chern--Simons (CS) coupling γ (γ̂=γ/M^2) and Maxwell coupling η. For this purpose, we employ hyperboloidal Rácz--Tóth evolution and a stationary axisymmetric zero-mode computation. The resulting thresholds are compared with the time-domain response at representative points. For γ̂=0, we find two asymmetric threshold branches in η, while for γ̂=η, the two branches have opposite signs and unequal magnitudes. For unequal CS and Maxwell couplings, the two real threshold branches merge as the spin or CS coupling increases.
ER -