4.4 Article

Reducing phase error in long numerical binary black hole evolutions with sixth-order finite differencing

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CLASSICAL AND QUANTUM GRAVITY
卷 25, 期 10, 页码 -

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IOP PUBLISHING LTD
DOI: 10.1088/0264-9381/25/10/105006

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We describe a modification of a fourth-order accurate 'moving-puncture' evolution code, where by replacing spatial fourth-order accurate differencing operators in the bulk of the grid by a specific choice of sixth-order accurate stencils we gain significant improvements in accuracy. We illustrate the performance of the modified algorithm with an equal-mass simulation covering nine orbits.

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