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arXiv math-ph/0101006math-phmath.MP
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广义尖峰谐振子

Generalized spiked harmonic oscillator

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

摘要:

对一类广义尖峰谐振子哈密顿量H = -(d/dx)^2 + Bx^2 + A/x^2 + lambda/x^alpha进行了变分和微扰处理,其中B > 0,A >= 0,alpha和lambda表示两个实正参数.该方法利用解所张成的函数空间|薛定谔方程的势V(x)= Bx^2 + A/x^2。得到了矩阵元的紧凑的封闭形式表达式<m |H| n>,并推导出波函数的一阶微扰级数。结果是以广义超几何函数形式给出的。证明了当α &lt;= 2时,波函数的级数绝对收敛.

英文摘要:

A variational and perturbative treatment is provided for a family of generalized spiked harmonic oscillator Hamiltonians H = -(d/dx)^2 + B x^2 + A/x^2 + lambda/x^alpha, where B > 0, A >= 0, and alpha and lambda denote two real positive parameters. The method makes use of the function space spanned by the solutions |n> of Schroedinger's equation for the potential V(x)= B x^2 + A/x^2. Compact closed-form expressions are obtained for the matrix elements <m|H|n>, and a first-order perturbation series is derived for the wave function. The results are given in terms of generalized hypergeometric functions. It is proved that the series for the wave function is absolutely convergent for alpha <= 2.

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