arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0603205quant-ph
收藏

Hellmann势束缚态的微扰处理

A perturbative treatment for the bound states of the Hellmann potential

Sameer M. Ikhdair, Ramazan Sever

摘要:

本文采用一种新的近似方法研究了Hellmann势的束缚态,该势是库仑吸引势$-a/r$和具有任意强度$b$和屏蔽参数$δ$的Yukawa势$b\exp (-δr)/r$的叠加.虽然能量本征值$E_{n,l\text{}}$的解析表达式在很弱的屏蔽极限下对大范围的$n,\ell $都能得到相当精确的结果,但随着强度$b$和屏蔽系数$δ$的增加,结果逐渐变差。这是因为展开参数不够小,不足以保证展开级数对于能级的收敛。

英文摘要:

A new approximation formalism is applied to study the bound states of the Hellmann potential, which represents the superposition of the attractive Coulomb potential $-a/r$ and the Yukawa potential $b\exp (-δr)/r$ of arbitrary strength $b$ and screening parameter $δ$. Although the analytic expressions for the energy eigenvalues $E_{n,l\text{}}$ yield quite accurate results for a wide range of $n,\ell $ in the limit of very weak screening, the results become gradually worse as the strength $b$ and the screening coefficient $δ$ increase. This is because that the expansion parameter is not sufficiently small enough to guarantee the convergence of the expansion series for the energy levels.

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。

↑