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gr-qc2000
Episodic Self-Similarity in Critical Gravitational Collapse
J. Thornburg, Ch. Lechner, M. Purrer +2
We report on a new behavior found in numerical simulations of spherically symmetric gravitational collapse in self-gravitating SU(2) sigma models at intermediate gravitational coup…
gr-qc2000
A Multiple-Grid-Patch Evolution Scheme for 3-D Black Hole Excision
Jonathan Thornburg
When using black hole excision to numerically evolve a fully generic black hole spacetime, most 3-D 3+1 codes use an -topology (spatial) grid. In such a grid, an $r = \constan…