Nonlinear dynamics of compact object mergers in Einstein-scalar-Gauss-Bonnet gravity

          @misc{ scivideos_PIRSA:24070036,
            doi = {10.48660/24070036},
            url = {https://pirsa.org/24070036},
            author = {Corman, Maxence},
            keywords = {Cosmology, Strong Gravity, Mathematical physics},
            language = {en},
            title = {Nonlinear dynamics of compact object mergers in Einstein-scalar-Gauss-Bonnet gravity},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2024},
            month = {jul},
            note = {PIRSA:24070036 see, \url{https://scivideos.org/index.php/pirsa/24070036}}
          }
          

Abstract

In recent years, gravitational wave observations of compact objects have provided new opportunities to test our understanding of gravity in the strong-field, highly dynamical regime. To perform model-dependent tests of General Relativity with these observations, one needs accurate inspiral-merger-ringdown waveforms in alternative theories of gravity. In this talk, we will discuss the nonlinear dynamics of compact object mergers in a class of modified theories of gravity, as well as the challenges in numerically obtaining those solutions. The theory we focus on is Einstein-scalar-Gauss-Bonnet gravity, which is a representative example of a Horndeski gravity theory and is interesting because it admits scalar hairy black hole solutions.