9 papers
Two-loop renormalisation and Higgs phenomenology in the five-dimensional MSSM
Ammar Abdalgabar, Alan S. Cornell, Aldo Deandrea +2
The five-dimensional Minimal Supersymmetric Standard Model (5D MSSM) provides an attractive framework in which power-law renormalisation group evolution naturally generates a sizea…
Gravitationally-decoupled hairy black holes: probing geometric, optical, and quasinormal mode signatures
Paul Allen M. Gonzales, Anna Chrysostomou, Alan S. Cornell +1
Gravitational-decoupling provides a systematic framework for constructing black hole geometries from known (seed) solutions (such as the Schwarzschild), whose exterior properties c…
Scalar quasinormal modes of Schwarzschild--anti-de Sitter black holes: spectral analysis and generalized boundary conditions
Davide Batic, Alan S. Cornell, Denys Dutykh
We study quasinormal modes (QNMs) of a minimally coupled massless scalar field on four-dimensional Schwarzschild--anti-de Sitter black holes using a Chebyshev spectral method. Afte…
Gravitational waves from flavoured SU(2) early-universe phase transitions
Anna Chrysostomou, Alan S. Cornell, Luc Darmé +2
Flavourful extensions of the Standard Model aimed at explaining its fermionic mass structure typically rely on symmetries, broken at high-energy scales far beyond the reach of fore…
Analyzing the effect of higher dimensions on the black hole silhouette, deflection angles, and PINN approximated quasinormal modes
Nikko John Leo S. Lobos, Anele M. Ncube, Reggie C. Pantig +1
This study investigates the effects of higher dimensions on the observable properties of Schwarzschild-Tangherlini black holes, focusing on the photonsphere, shadow radius, deflect…
Dominant misconceptions and alluvial flows between Engineering and Physical Science students
Anna Chrysostomou, Alan S. Cornell, Wade Naylor
In this article we assess the comprehension of physics concepts by Physical Science and Engineering students enrolled in their first semester at the University of Johannesburg (UJ)…