3 papers
gr-qc2026
Energy extraction from NED-deformed rotating black holes via the Comisso-Asenjo reconnection process
Marco Figliolia, Gaetano Lambiase, Ali Ãvgün +1
We study rotating black holes in general relativity coupled to nonlinear electrodynamics (NED), focusing on an axisymmetric solution with deformation parameter g. On the spherical…
gr-qc2026
Thermodynamic Gravity with Non-Extensive Horizon Entropy and Topological Calibration
Marco Figliolia, Petr Jizba, Gaetano Lambiase
We revisit Jacobson's thermodynamic derivation of gravitational dynamics in the presence of generalized, non-extensive horizon entropies. Working within a local Rindler-wedge frame…
astro-ph.CO2026
Gravitational Signatures of Axion Dark Matter via Parity-Violating Interactions
Marco Figliolia, Francesco Grippa, Gaetano Lambiase +1
We investigate axion-like particles coupled to gravity through a parity-violating Chern-Simons (CS) interaction. In this framework, axion dark matter (DM) can decay into pairs of c…