Scattering of a Scalar Field in the Four-Dimensional Quasi-Topological Gravity
Abstract
We study grey-body factors for a massless scalar field in the spacetime of regular black holes arising in four–dimensional non-polynomial quasi-topological gravity. We consider two representative metrics that capture the typical features of regular geometries. Using the WKB method, we compute the transmission probabilities and analyze their dependence on the regularization parameter. The grey-body factors are found to deviate only slightly from the Schwarzschild case, indicating that the scattering properties are largely insensitive to near-horizon regularization of the geometry. The correspondence between quasinormal modes and grey-body factors is shown to be sufficiently accurate for higher multipole numbers.
Fields of Study & Subjects
Black Holes and Theoretical Physics
Cosmology and Gravitation Theories
Noncommutative and Quantum Gravity Theories
Publication details
- Journal / source
- International Journal of Gravitation and Theoretical Physics
- Publisher
- Scilight Press Pty Ltd
- Volume
- 2
- Issue
- 1
- Publication date
- 25 March 2026
- Language
- EN