Testing general relativity with present and future astrophysical observations

E Berti, E Barausse, V Cardoso… - … and Quantum Gravity, 2015 - iopscience.iop.org
One century after its formulation, Einstein's general relativity (GR) has made remarkable
predictions and turned out to be compatible with all experimental tests. Most of these tests …

Spontaneous scalarization

DD Doneva, FM Ramazanoğlu, HO Silva… - Reviews of Modern …, 2024 - APS
Scalarization is a mechanism that endows strongly self-gravitating bodies, such as neutron
stars and black holes, with a scalar-field configuration. It resembles a phase transition in that …

New Gauss-Bonnet black holes with curvature-induced scalarization in extended scalar-tensor theories

DD Doneva, SS Yazadjiev - Physical review letters, 2018 - APS
In the present Letter, we consider a class of extended scalar-tensor-Gauss-Bonnet (ESTGB)
theories for which the scalar degree of freedom is excited only in the extreme curvature …

Spontaneous scalarization of charged black holes

CAR Herdeiro, E Radu, N Sanchis-Gual, JA Font - Physical review letters, 2018 - APS
Extended scalar-tensor Gauss-Bonnet (ESTGB) gravity has been recently argued to exhibit
spontaneous scalarization of vacuum black holes (BHs). A similar phenomenon can be …

Stability of scalarized black hole solutions in scalar-Gauss-Bonnet gravity

HO Silva, CFB Macedo, TP Sotiriou, L Gualtieri… - Physical Review D, 2019 - APS
Scalar-tensor theories of gravity where a new scalar degree of freedom couples to the
Gauss-Bonnet invariant can exhibit the phenomenon of spontaneous black hole …

Radial perturbations of the scalarized Einstein-Gauss-Bonnet black holes

JL Blázquez-Salcedo, DD Doneva, J Kunz… - Physical Review D, 2018 - APS
Recently a new class of scalarized black holes in Einstein-Gauss-Bonnet (EGB) theories
was discovered. What is special for these black hole solutions is that the scalarization is not …

[PDF][PDF] Scalarization

DD Doneva, FM Ramazanoğlu, HO Silva… - arXiv preprint arXiv …, 2022 - pure.mpg.de
Exploring the nature of gravity in the strong curvature regime is seeing a surge of interest
lately. This is expected to intensify, as it is driven by current and future observations of …

Scalarized black holes in the presence of the coupling to Gauss-Bonnet gravity

M Minamitsuji, T Ikeda - Physical Review D, 2019 - APS
In this paper, we study static and spherically symmetric black hole (BH) solutions in the
scalar-tensor theories with the coupling of the scalar field to the Gauss-Bonnet (GB) term, ξ …

Slowly rotating anisotropic neutron stars in general relativity and scalar–tensor theory

HO Silva, CFB Macedo, E Berti… - Classical and Quantum …, 2015 - iopscience.iop.org
Some models (such as the Skyrme model, a low-energy effective field theory for quantum
chromodynamics) suggest that the high-density matter prevailing in neutron star (NS) …

Charged Gauss-Bonnet black holes with curvature induced scalarization in the extended scalar-tensor theories

DD Doneva, S Kiorpelidi, PG Nedkova… - Physical Review D, 2018 - APS
Recently new scalarized black hole solutions were constructed in the extended scalar-
tensor-Gauss-Bonnet gravity, where the scalar field is sourced by the curvature of the …