3 papers
gr-qc2026
Asymptotic AEther Misalignment and Universal-Horizon Mechanics
Walter Arata, Moustafa Ismail, Stefano Liberati +3
Universal horizons trap even arbitrarily fast signals, providing a test of black-hole thermodynamics in theories with a preferred time direction. In Einstein--aether theory, this d…
gr-qc2026
Einstein-aether Elliptic Charges and the First Law of Asymptotically AdS Black Holes
Walter Arata, Moustafa Ismail, Stefano Liberati +3
We investigate the thermodynamic role of asymptotic aether alignment for universal horizons in Einstein-aether theory. In the static, spherically symmetric, asymptotically AdS sect…
gr-qc2026
Metric--affine gravity with dynamical chronology protection
Moustafa Ismail, David Mattingly
Modified theories of gravity often introduce geometric structure beyond general relativity to address unresolved problems in the gravitational sector without invoking ad hoc matter…