Improved Cauchy-characteristic evolution system for high-precision numerical relativity waveforms

@article{Moxon2020ImprovedCE,
title={Improved Cauchy-characteristic evolution system for high-precision numerical relativity waveforms},
author={Jordan Moxon and M. Scheel and S. Teukolsky},
journal={Physical Review D},
year={2020},
volume={102}
}

We present several improvements to the Cauchy-characteristic evolution procedure that generates high-fidelity gravitational waveforms at I+ from numerical relativity simulations. Cauchy-characteristic evolution combines an interior solution of the Einstein field equations based on Cauchy slices with an exterior solution based on null slices that extend to I+. The foundation of our improved algorithm is a comprehensive method of handling the gauge transformations between the arbitrarily… CONTINUE READING