https://doi.org/10.1140/epjp/s13360-025-06555-y
Comment
Comment on “Eigensolution, expectation values and thermodynamic properties of the screened Kratzer potential”
Department of Physics, College of Science, Sultan Qaboos University, P.O. Box 36, 123, Al-Khod, Muscat, Sultanate of Oman
Received:
25
February
2025
Accepted:
9
June
2025
Published online:
26
June
2025
We argue that the parameters 
and 
used by Ikot et al. (Eur Phys J Plus 134:386, 2019. https://doi.org/10.1140/epjp/i2019-12783-x) in the screened Kratzer potential (SKP) do not correspond to the real equilibrium bond length. As a result, the application of this potential to calculate the ro-vibrational energy of diatomic molecules is fundamentally incorrect. Here, we present the correct formulation of the SKP that is appropriate for diatomic molecules and provide an accurate calculation of the corresponding rovibrational energy levels. Also, the authors employed incorrect energy values to compute thermodynamic properties, compromising the accuracy of their findings and rendering the results physically meaningless. Furthermore, the authors arbitrarily used incorrect values to the upper bound vibrational quantum number, 
, treating it as if it were independent of 
and the potential parameters, despite its lack of correspondence to any rotational quantum number. Consequently, the results and conclusions presented in Ref. (Eur Phys J Plus 134:386, 2019. https://doi.org/10.1140/epjp/i2019-12783-x) are entirely invalid and scientifically unreliable.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
