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Numerical relativity has faced the problem that standard 3+1 simulations of black hole spacetimes without singularity excision and with singularity avoiding lapse and vanishing shift fail early on due to the so-called slice stretching. We discuss lapse and shift conditions for the nonexcision case that effectively cure slice stretching and allow run times of [Formula Presented] and more. © 2003 The American Physical Society.

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Physical Review D - Particles, Fields, Gravitation and Cosmology