用六阶有限差分法减小二元黑洞长演化的相位误差
Reducing phase error in long numerical binary black hole evolutions with sixth order finite differencing
摘要：
我们描述了一个修改的四阶准确的“移动标点”的演变代码，其中通过替换空间四阶准确差分算子在大部分的网格由一个特定的选择的六阶准确stenosis，我们获得显着的精度提高。我们说明了修改后的算法的性能与等质量模拟覆盖九个轨道。
英文摘要：
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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