12 citations · 15 across the 9 of their papers we have counts for
6 papers · 1 filter
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…
Representation Theory of Three-dimensional Corner Symmetries
Giulio Neri, Ludovic Varrin
We study the representation theory of the three-dimensional extended corner symmetry group associated with a circular corner. Using induced representation techniques, we construct…
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…
Taming the Aretakis instability: extremal black holes with multi-degenerate horizons
Shreyansh Agrawal, Panagiotis Charalambous, Laura Donnay +2
Stationary black hole geometries with non-degenerate Cauchy horizons are classically unstable due to mass inflation. At extremality, mass inflation is absent, but a different dynam…
A Covariant Phase Space Approach to Einstein-AEther Gravity
Walter Arata, Stefano Liberati, Giulio Neri
Black hole thermodynamics in Lorentz-violating gravity is subtle because different excitations propagate at different speeds and hence identify different causal horizons. We revisi…
A Covariant Formulation of Logarithmic Supertranslations at Spatial Infinity
Florian Girelli, Simon Langenscheidt, Giulio Neri +2
We investigate the asymptotic symmetries of asymptotically flat spacetimes at spatial infinity. We propose a new symplectic structure and conservative boundary conditions in a poly…