#1630: ML_BSSN harmonic shift is ill-posed -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: defect | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: | -----------------------------------+---------------------------------------- The implementation of the ML_BSSN harmonic shift is ill-posed. It should use the evolved Gamma variables instead of taking metric derivatives. A robust stability test clearly shows an instability: higher resolutions have faster growing errors.