87 citations · 222 across the 7 of their papers we have counts for
7 papers
Exotic compact objects and light bosonic fields
Farid Thaalba, Giulia Ventagli, Thomas P. Sotiriou
In this note, we discuss the effect of light, non-gauge, bosonic degrees of freedom on the exterior spacetime of an exotic compact object. We show that such fields generically intr…
Neutron stars and the cosmological constant problem
Giulia Ventagli, Pedro G. S. Fernandes, Andrea Maselli +2
Phase transitions can play an important role in the cosmological constant problem, allowing the underlying vacuum energy, and therefore the value of the cosmological constant, to c…
Incompatibility of gravity theories with auxiliary fields with the Standard Model
Giulia Ventagli, Paolo Pani, Thomas P. Sotiriou
Theories of gravity with auxiliary fields are of particular interest since they are able to circumvent Lovelock's theorem while avoiding to introduce new degrees of freedom. This t…
Neutron star scalarization with Gauss-Bonnet and Ricci scalar couplings
Giulia Ventagli, Georgios Antoniou, Antoine Lehébel +1
Spontaneous scalarization of neutron stars has been extensively studied in the Damour and Esposito-Farèse model, in which a scalar field couples to the Ricci scalar or, equivalentl…
Black hole scalarization with Gauss-Bonnet and Ricci scalar couplings
Georgios Antoniou, Antoine Lehébel, Giulia Ventagli +1
Spontaneous scalarization is a gravitational phenomenon in which deviations from general relativity arise once a certain threshold in curvature is exceeded, while being entirely ab…
The onset of spontaneous scalarization in generalised scalar-tensor theories
Giulia Ventagli, Antoine Lehébel, Thomas P. Sotiriou
In gravity theories that exhibit spontaneous scalarization, astrophysical objects are identical to their general relativistic counterpart until they reach a certain threshold in co…
Spontaneous scalarization in generalised scalar-tensor theory
Nikolas Andreou, Nicola Franchini, Giulia Ventagli +1
Spontaneous scalarization is a mechanism that endows relativistic stars and black holes with a nontrivial configuration only when their spacetime curvature exceeds some threshold.…