3 papers
gr-qc2026
Graybody factors and absorption cross-sections of non-exchange black holes in Instein-coupled scalar fields
Sihao Fan, Wenjun Guo, Chen Wu
This paper studies scalar field perturbations coupled with Einstein tensors of non-exchange black holes. We use the polarization method to calculate graybody factors and absorption…
gr-qc2025
Absorption and scattering of massless scalar waves by black holes in quasi-topological gravity
SiHao Fan, Chen Wu, WenJun Guo
We consider massless scalar field perturbations of regular black holes in quasi-topological gravity. After reviewing various regular black hole solutions, we compute the total abso…
gr-qc2025
Geodesic structure of a noncommutative black hole
Zihan Xi, Chen Wu, Wenjun Guo
This paper explores the metric of Piero Nicolini's noncommutative black hole spacetime, calculates its effective potential, and presents the corresponding potential curve. By analy…