Angle-average for the powers of the distance between two separated vectors
Angle-average for the powers of the distance between two separated vectors
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两个分离向量之间距离的幂的角度平均值
DOI：
10.1080/00268978800100931
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发表时间：
1988
影响因子：
1.7
通讯作者：
R. Lustig
中科院分区：
文献类型：
--
作者：
R. Lustig
导出了两个分离向量之间距离的任意次方的角度平均值的封闭解析公式。文中还说明了如何以封闭的解析形式求出球谐函数的展开系数。
Closed analytical formulae are derived for the angle-average of arbitrary powers of the distance between two separated vectors. It is also shown how coefficients of an expansion in spherical harmonics can be obtained in a closed analytical form.