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arXiv 1909.06925math-phmath.MP
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库仑薛定谔方程的第二类封闭解

Closed-form Second Solutions to the Coulombic Schrödinger Equation

William C. Parke

摘要:

在电子受到库仑力作用的情况下,薛定谔方程的正则解是众所周知的。由于要求解的微分方程的径向部分是二阶导数,它将有两个独立的解,第二个非正则解在原点处是病态的,在无穷远处是不受约束的。由于这个原因,第二个解决方案被丢弃的束缚电子。然而,这些第二解决方案仍然是学术兴趣的几个原因。一个原因是帮助设计方案,以控制数值污染的第二个解决方案,以更一般的二阶微分方程时,试图计算第一个解决方案,通过递归关系。另一个是研究电子库仑波函数的解析行为,因为电子的能量和角动量都扩展到复平面,在研究束缚态极点和Regge轨迹的重要。此外,玩具问题具有有限的径向区域与库仑相互作用,内部和外部区域非库仑,需要规则和不规则的解决方案,以匹配解决方案跨越边界。在本演示中,精确的和封闭形式的第二个不规则的库仑束缚态的解决方案,使用一个迄今未被注意的技巧在Nikiforov-Uvorov方法。

英文摘要:

The regular solutions to the Schördinger equation in the case of an electron experiencing a Coulomb force are well known. Being that the radial part of the differential equation to be solved is second order in derivatives, it will have two independent solutions, with the second irregular solutions being ill-behaved at the origin and unbound at infinity. For this reason, second solutions are dropped for bound electrons. However, these second solutions are still of academic interest for several reasons. One reason is to help devise schemes to control numerical contamination by second solutions to more general second-order differential equations when attempting to calculate the first solutions through recursion relations. Another is to study the analytic behavior of the electron Coulomb wave functions as the electron energy and angular momentum are each extended into the complex plane, important in investigations of bound-state poles and of Regge trajectories. In addition, toy problems having a finite radial region with a Coulombic interaction, with interior and exterior regions non Coulombic, require both regular and irregular solutions to match solutions across the boundaries. In this presentation, exact and closed form second irregular solutions are derived for the Coulomb bound states, using a hither-to unnoticed trick in the Nikiforov-Uvorov method.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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