11 papers
Wave and particle probes of a regular T-duality-inspired black hole with gravitational self-energy
Alexey Dubinsky
Recently it was shown that a non-local T-duality-inspired smearing of the point mass introduces a finite zero-point length, while the regularized Newtonian gravitational self-energ…
From Ringdown to Lensing: Analytic Eikonal Modes of Quasi-Topological Regular Black Holes
Alexey Dubinsky
We develop an analytic eikonal description of perturbations for four-dimensional regular black holes in quasi-topological gravity. Using first-order Schutz--Will WKB together with…
Scattering of a scalar field in the four-dimensional quasi-topological gravity
Alexey Dubinsky
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…
Long-lived modes and grey-body factors of massive fields in quantum-corrected (Hayward) black holes
Alexey Dubinsky
We study the dynamics of a massive scalar field in the background of the Hayward black hole, which can be interpreted both as a regular spacetime and as an effective geometry arisi…
Scattering and Absorption of Standard Model Fields by Brane-Localized Schwarzschild--de Sitter Black Holes
Alexey Dubinsky
We investigate the propagation and absorption of Standard Model fields -- scalar, electromagnetic, and Dirac -- on a 3+1-dimensional brane embedded in a higher-dimensional Schwarzs…
Gravitational perturbations of Dymnikova black holes: grey-body factors and absorption cross-sections
Alexey Dubinsky
We study axial gravitational perturbations of the Dymnikova regular black hole, an asymptotically flat spacetime in which the Schwarzschild singularity is replaced by a de Sitter c…