Two modified CCZ4 schemes that propagate momentum constraint violations without damping suppress a late-time instability seen in long BSSN black hole simulations.
Baker, Joan Centrella, Dae-Il Choi, Michael Koppitz, and James van Meter
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Stable long-term evolution in numerical relativity
Two modified CCZ4 schemes that propagate momentum constraint violations without damping suppress a late-time instability seen in long BSSN black hole simulations.