2 papers
gr-qc2023
Spherical collapse in scalar-Gauss-Bonnet gravity: taming ill-posedness with a Ricci coupling
Farid Thaalba, Miguel Bezares, Nicola Franchini +1
We study spherical collapse of a scalar cloud in scalar-Gauss-Bonnet gravity - a theory in which black holes can develop scalar hair if they are in a certain mass range. We show th…
gr-qc2022
The well-posedness of the Cauchy problem for self-interacting vector fields
Enrico Barausse, Miguel Bezares, Marco Crisostomi +1
We point out that the initial-value (Cauchy) problem for self-interacting vector fields presents the same well-posedness issues as for first-order derivative self-interacting scala…