3 papers
gr-qc2026
Chaotic motion of particle in regular black hole supported by Galactic halo
Aofei Sang, Ziyi Fang
We investigate the chaotic dynamics of the massless test particles moving in the regular black hole supported by a Dehnen-type dark matter halo. By limiting the particle within a e…
gr-qc2026
Thermodynamics of the FRW Universe in Generalized Proca Theory
Aofei Sang
We investigate the thermodynamics of a spatially flat Friedmann-Robertson-Walker (FRW) universe within the framework of Generalized Proca (GP) theory, a comprehensive vector-tensor…
gr-qc2025
Black hole destabilization via trapped quasi-normal modes
Hsu-Wen Chiang, Sebastian Garcia-Saenz, Aofei Sang
In the presence of non-minimal gravitational couplings, matter field perturbations on a static black hole spacetime may develop unphysical poles in their linearized equations. Phys…