Speaker
Description
Spurred on by recent advances in post-Minkowskian (PM) gravity, highly accurate models of black hole scattering have emerged. By incorporating PM information in the effective one body (EOB) framework, its range of validity can be extended to the strong field regime. Central to these models is the EOB mass-shell condition, which relies upon a number of different choices of gauge and a specific resummation scheme. In this talk I will discuss the impact of gauge choices, highlighting the strong dependence on both coordinate and EOB gauge in the final model. I will also describe how the gauge choices interact with the choice of resummation scheme. Finally, I will describe a new gauge based on the centrifugal radius, which can offer improvements for the scattering of spinning black holes.
