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arXiv 1803.09396math-phhep-phmath.MP
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Legendre函数和Jacobi函数的渐近Bessel函数展开式

Asymptotic Bessel-function expansions for Legendre and Jacobi functions

Loyal Durand

摘要:

给出了第一类和第二类Legendre函数和Jacobi函数的新的渐近级数,它们都是用具有适当自变量的Bessel函数表示的。这些结果在散射问题的背景下很有用,改进了已知的极限结果,并允许计算对这些函数的主要贝塞尔函数逼近的修正。我们的推导这些系列的基础上巴恩斯型表示的勒让德,雅可比和贝塞尔函数,我们的方法似乎是新的。我们使用的结果,最后,获得渐近贝塞尔函数展开的旋转函数需要描述的粒子与自旋的散射。

英文摘要:

We present new asymptotic series for the Legendre and Jacobi functions of the first and second kinds in terms of Bessel functions with appropriate arguments. The results are useful in the context of scattering problems, improve on known limiting results, and allow the calculation of corrections to the leading Bessel-function approximations for these functions. Our derivations of these series are based on Barnes-type representations of the Legendre, Jacobi, and Bessel functions; our method appears to be new. We use the results, finally, to obtain asymptotic Bessel function expansions for the rotation functions needed to describe the scattering of particles with spin.

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