The Runge-Kutta-Wentzel-Kramers-Brillouin Method

The Runge-Kutta-Wentzel-Kramers-Brillouin Method
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龙格-库塔-温策尔-克莱默斯-布里渊法

DOI:
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发表时间:
2016
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通讯作者:
M. Hobson
M. Hobson
中科院分区:
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文献类型:
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作者:
Will Handley;A. Lasenby;M. Hobson

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我们证明了一种新颖的数值求解线性微分方程方案的有效性,该方程的解表现出极端振荡。我们采用标准的 Runge-Kutta 方法,但用 Wentzel-Kramers-Brillouin 方法替换泰勒展开公式。该方法通过应用于艾里方程以及更复杂的突发振荡情况进行了演示。最后,我们将我们的方案与现有方法进行比较。
We demonstrate the effectiveness of a novel scheme for numerically solving linear differential equations whose solutions exhibit extreme oscillation. We take a standard Runge-Kutta approach, but replace the Taylor expansion formula with a Wentzel-Kramers-Brillouin method. The method is demonstrated by application to the Airy equation, along with a more complicated burst-oscillation case. Finally, we compare our scheme to existing approaches.