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arXiv 1104.2591math-phmath.MP
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广义量子保序非线性振子势的研究

Study of the generalized quantum isotonic nonlinear oscillator potential

Nasser Saad, Richard L. Hall, Hakan Ciftci, Ozlem Yesiltas

摘要:

研究了广义量子保序振子哈密顿量H=-d^2/dr^2+l(l+1)/r^2+w^2r^2+2g(r^2-a^2)/(r^2+a^2)^2,g>0.探讨了两种方法。提出了一种求拟多项式解的方法,给出了拟多项式解的显式表达式和势参数的条件。通过使用渐近迭代法,我们展示了如何在任意值的参数g,w和a的本征值的哈密顿量可以找到高精度。

英文摘要:

We study the generalized quantum isotonic oscillator Hamiltonian given by H=-d^2/dr^2+l(l+1)/r^2+w^2r^2+2g(r^2-a^2)/(r^2+a^2)^2, g>0. Two approaches are explored. A method for finding the quasi-polynomial solutions is presented, and explicit expressions for these polynomials are given, along with the conditions on the potential parameters. By using the asymptotic iteration method we show how the eigenvalues of this Hamiltonian for arbitrary values of the parameters g, w and a may be found to high accuracy.

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