Speaker
Llibert Aresté Saló
Description
I will discuss how Numerical Relativity can serve as a tool to study non-linear dynamics in effective field theories (EFTs) of gravity. I will first present our work on scalar-Gauss-Bonnet gravity, in which a change of gauge enables well-posed evolutions in black hole spacetimes, which reveal potential smoking gun signatures in gravitational-wave emission. I will then introduce a recently proposed well-posed formulation by Figueras, Held and Kovács that applies to all polynomial higher-derivative EFTs of gravity and show our initial progress in exploring dynamical Chern-Simons gravity.