2 papers
gr-qc2026
Hierarchical formulation of the self-gravitating, n-dimensional, charged scalar field in spherical symmetry in affine null formalism
Laura Bridera, Emanuel Gallo, Thomas Mädler
We develop an affine-null characteristic formulation of the Einstein-Maxwell system coupled to a charged complex scalar field in -dimensional spherical symmetry. By introducing…
gr-qc2025
Bounds for Lyapunov exponent of circular light orbits in black holes
Emanuel Gallo, Thomas Mädler
Chaotic systems near black holes satisfy a universal bound, linking the Lyapunov coefficient associated with unstable orbits to surface gravity of the eve…