166 citations · 458 across the 12 of their papers we have counts for
12 papers
Exploring the construction of field equations for regular black holes with dynamical regularization scales
Raúl Carballo-Rubio, Jacopo Mazza
The study of the dynamics of regular black holes is an emergent area of research. Recent works have discussed how to deform the Einstein field equations to regularize spherically s…
Black bounces to traversable wormholes from pure gravity in four and higher dimensions
Jacopo Mazza
This article derives static and spherically symmetric wormhole and black bounce spacetimes as vacuum solutions of metric gravitational theories in four and higher dimensions. To th…
Mechanics of non-Killing horizons
Francesco Del Porro, Jacopo Mazza
We investigate the mechanics of stationary axisymmetric non-Killing horizons, which emerge in spacetimes that do not enjoy the symmetry known as circularity -- as is commonly the c…
Properties of general stationary axisymmetric spacetimes: circularity and beyond
Eugeny Babichev, Jacopo Mazza
We analyse properties of general stationary and axisymmetric spacetimes, with a particular focus on circularity -- an accidental symmetry enjoyed by the Kerr metric, and therefore…
Universal Horizons without Hypersurface Orthogonality
Francesco Del Porro, Stefano Liberati, Jacopo Mazza
A key consequence of Lorentz-violating gravity is the emergence of modified dispersion relations implying the absence of a universal maximum propagation speed. This challenges the…
Towards a Non-singular Paradigm of Black Hole Physics
Raúl Carballo-Rubio, Francesco Di Filippo, Stefano Liberati +18
The study of regular black holes and black hole mimickers as alternatives to standard black holes has recently gained significant attention, driven both by the need to extend gener…
Kerr Black Hole in Einstein--Æther Gravity
Edgardo Franzin, Stefano Liberati, Jacopo Mazza
While non-rotating black-hole solutions are well known in Einstein--æther gravity, no axisymmetric solutions endowed with Killing horizons have been so far found outside of the slo…
Regular Black Holes and Horizonless Ultra-Compact Objects in Lorentz-Violating Gravity
Jacopo Mazza, Stefano Liberati
There is growing evidence that Hořava gravity may be a viable quantum theory of gravity. It is thus legitimate to expect that gravitational collapse in the full, non-projectable ve…
Stable Rotating Regular Black Holes
Edgardo Franzin, Stefano Liberati, Jacopo Mazza +1
We present a rotating regular black hole whose inner horizon has zero surface gravity for any value of the spin parameter, and is therefore stable against mass inflation. Our metri…
Scalar perturbations around rotating regular black holes and wormholes: quasi-normal modes, ergoregion instability and superradiance
Edgardo Franzin, Stefano Liberati, Jacopo Mazza +2
We study scalar test-field perturbations on top of a Kerr--black-bounce background, i.e. a family of rotating regular black holes and/or rotating traversable wormholes that can mim…
Charged black-bounce spacetimes
Edgardo Franzin, Stefano Liberati, Jacopo Mazza +2
Given the recent development of rotating black-bounce-Kerr spacetimes, for both theoretical and observational purposes it becomes interesting to see whether it might be possible to…
A novel family of rotating black hole mimickers
Jacopo Mazza, Edgardo Franzin, Stefano Liberati
The recent opening of gravitational wave astronomy has shifted the debate about black hole mimickers from a purely theoretical arena to a phenomenological one. In this respect, mis…