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arXiv math-ph/0109014math-phmath.MP
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尖峰谐振子

Spiked harmonic oscillators

Richard L. Hall, Nasser Saad, Attila B. von Keviczky

摘要:

本文对一类尖峰谐振子哈密顿量H = -d^2/dx^2 + Bx^2 + lambda/x^alpha,B > 0,lambda > 0,对任意的alpha > 0,给出了一个完整的变分处理.给出了Hilbert空间L_2(0,无穷大)的已知精确解集S = {psi_n}构成标准正交基的一个紧拓扑证明.导出了H关于S的矩阵元的封闭形式表达式。这些分析结果,并列入进一步的自由参数,有利于优化变分估计的特征值H的高精度。

英文摘要:

A complete variational treatment is provided for a family of spiked-harmonic oscillator Hamiltonians H = -d^2/dx^2 + B x^2 + lambda/x^alpha, B > 0, lambda > 0, for arbitrary alpha > 0. A compact topological proof is presented that the set S = {psi_n} of known exact solutions for alpha = 2 constitutes an orthonormal basis for the Hilbert space L_2(0, infinity). Closed-form expressions are derived for the matrix elements of H with respect to S. These analytical results, and the inclusion of a further free parameter, facilitate optimized variational estimation of the eigenvalues of H to high accuracy.

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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