Prefer a chat interface with context about you and your work?
Hyperbolicity in spherical gravitational collapse in a Horndeski theory
We numerically study spherical gravitational collapse in shift symmetric Einstein dilaton Gauss Bonnet (EdGB) gravity. We find evidence that there are open sets of initial data for which the character of the system of equations changes from hyperbolic to elliptic type in a compact region of the spacetime. In these …