Nonlinear effects in black hole ringdown from scattering experiments: Spin and initial data dependence of quadratic mode coupling

We thank Emanuele Berti, Alejandro Cárdenas-Avendaño, Mark Cheung, William East, Will Farr, Elena Giorgi, Lam Hui, Maximiliano Isi, Macarena Lagos, Lionel London, Nicholas Loutrel, Harrison Siegel, and Zihan Zhou for helpful discussions regarding various aspects of this project. H. Z. especially thank Will Farr, Maximiliano Isi, and Harrison Siegel for hosting stimulating discussions at the Flatiron institute, and Lam Hui and Macarena Lagos at Columbia University, where several of the key ideas presented in this paper were developed. The authors are pleased to acknowledge that the work reported on in this paper was substantially performed using the Princeton Research Computing resources at Princeton University which is a consortium of groups led by the Princeton Institute for Computational Science and Engineering (PICSciE) and Office of Information Technology’s Research Computing. Part of the computations for this work were also performed with the Wheeler cluster at Caltech. This work was supported in part by the Sherman Fairchild Foundation and NSF Grants No. PHY-2011968, No. PHY-2011961, No. PHY-2309211, No. PHY-2309231, No. OAC-2209656 at Caltech, and NSF Grants No. PHY-2207342 and No. OAC-2209655 at Cornell. J. L. R. acknowledges support from the Simons Foundation through Award No. 896696 and the NSF through the Award No. PHY-2207650. F. P. acknowledges support from the NSF through the Award No. PHY-2207286.