13 citations · 30 across the 8 of their papers we have counts for
9 papers
Emergence of Horndeski gravity from asymptotic safety?
Astrid Eichhorn, Pedro G. S. Fernandes, Fabian Willaschek
There are strong motivations to modify gravity in the ultraviolet as well as the infrared. Such modifications are usually pursued independently from one another. Using the predicti…
Strong breaking of black-hole uniqueness from coexisting scalarization mechanisms
Astrid Eichhorn, Pedro G. S. Fernandes, Lidia Marino
Black-hole uniqueness, i.e., the statement that all stationary vacuum black holes in the universe are described by the Kerr solution, is expected to break in theories beyond Genera…
Regular black holes without mass-inflation instability and gravastars from modified gravity
Astrid Eichhorn, Pedro G. S. Fernandes
We derive regular black-hole solutions, including the Hayward metric, from four-dimensional action principles involving vector fields in addition to the metric. These black holes p…
Supermassive black hole scalarization and effective field theory
Farid Thaalba, Pedro G. S. Fernandes, Thomas P. Sotiriou
A model in which black hole scalarization occurs for supermassive black holes, while their less massive counterparts remain unscalarized, has been recently proposed. We explore whe…
Non-minimal light-curvature couplings and black-hole imaging
Raúl Carballo-Rubio, Héloïse Delaporte, Astrid Eichhorn +1
Non-minimal couplings between the electromagnetic field strength and the spacetime curvature are part of the effective field theory of gravity and matter. They alter the local prop…
Rotating scalarized black holes: the role of the coupling
Kalin V. Staykov, Daniela D. Doneva, Pedro G. S. Fernandes +1
We perform an in-depth analysis of rotating scalarized black holes in scalar-Gauss-Bonnet gravity, where scalarization is induced by the spacetime curvature. Our results show that…
Purely metric Horndeski theories and spontaneous curvaturization of black holes
Astrid Eichhorn, Pedro G. S. Fernandes
We explore purely metric theories of gravity with second-order equations of motion and a single additional, purely gravitational, propagating, scalar degree of freedom. We identify…
Shadows and Properties of Spin-Induced Scalarized Black Holes with and without a Ricci Coupling
Pedro G. S. Fernandes, Clare Burrage, Astrid Eichhorn +1
In this work, we explore the properties and shadows of spin-induced scalarized black holes, as well as investigate how a Ricci coupling influences them. Our findings reveal signifi…
Breaking black-hole uniqueness at supermassive scales
Astrid Eichhorn, Pedro G. S. Fernandes, Aaron Held +1
In general relativity, all vacuum black holes are described by the Kerr solution. Beyond general relativity, there is a prevailing expectation that deviations from the Kerr solutio…