1 Correction to: Eur. Phys. J. D (2021) 75:127 https://doi.org/10.1140/epjd/s10053-021-00143-2

The article was published with an error in equation 6. It should read:

The time-independent radial Schrödinger equation is written as

$$\begin{aligned} \left[ -\frac{\hbar ^2}{2m}\frac{d^2}{dr^2} -\frac{Z}{r} +\frac{\hbar ^2}{2m}\frac{l(l+1)}{r^2}\right] R_{nl}(r)=E_{nl} R_{nl}. \end{aligned}$$

This has been corrected in the original article. No other changes to the article have been made.