Analyzing the effects of topological defect (Td) on the energy spectra and thermal properties of lih, tic and i2 diatomic molecules

Peter Nwabuzor, Collins Edet*, Akpan Ndemikot, Uduakobong Okorie, Morris Ramantswana, Ridha Horchani, Abdel Haleem Abdel-Aty, Gaotsiwe Rampho

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


In this study, the impacts of TD on the energy spectra and thermal properties of LiH, TiC and I2 diatomic molecules is considered. The Schrodinger equation in cosmic string spacetime is solved with the generalized Morse potential using the well-known (NU) method. The energy spectra and eigenfunction are obtained respectively. The energy spectra is used to obtain the partition function which is then used to evaluate the thermal properties of the system is evaluated accordingly. We find that the energy spectra in the presence of the TD differ from their flat Minkowski spacetime analogue. The effects of the deformation parameter and TD on the thermal properties of the system is also analysed in detail. We observe that the specific heat capacity of the system tends to exhibit quasi-saturation as the deformation parameter and topological defect approaches unity. The results of our study can be applied in the astrophysical situation where these modifications exist in the understanding of spectroscopical data and it may be used as a probe of the presence of a cosmic string or a global monopole in the Universe.

Original languageEnglish
Article number1060
Issue number8
Publication statusPublished - Aug 2021


  • Diatomic molecule
  • Nikiforov–Uvarov (NU)
  • Thermal properties
  • Topological defect

ASJC Scopus subject areas

  • Information Systems
  • Mathematical Physics
  • Physics and Astronomy (miscellaneous)
  • Electrical and Electronic Engineering

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