Existence, uniqueness and other properties of the BCT (minimal strain lapse and shift) gauge
classification
🌀 gr-qc
keywords
gaugeevolutionsexistencelapsenumericalshiftuniquenessbrady
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Brady, Creighton and Thorne have proposed a choice of the lapse and shift for numerical evolutions in general relativity that extremizes a measure of the rate of change of the three-metric (BCT gauge). We investigate existence and uniqueness of this gauge, and comment on its use in numerical time evolutions.
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