Influence of a topological defect on energy and partition function for a Yukawa potential

C. A. Onate

doi:10.61298/pnspsc.2026.3.306

Authors

C. A. Onate
[email protected]

Physics Department, College of Agriculture, Engineering and Science, Bowen University, Iwo, Osun State, Nigeria

Keywords:

Eigensolutions, Bound state, Thermodynamic properties, Potential model

Abstract

This study obtains the solution of the Schrödinger equation for a Yukawa potential interacting with a cosmic string as a topological defect (TD). The calculated energy levels are used to obtain the partition function (Z) under the TD. Some thermodynamic properties such as enthalpy (H), entropy (S) and Gibbs free energy (G), are studied under the influence of the TD. The results are presented for systems with and without the defect. They show that the presence of the TD consistently increases the energy eigenvalue as a function of both the potential strength and the screening parameter. The presence of the TD lowers S, increases Z and G, and has no effect on H as a function of temperature. The defect also increases Z and G as functions of the potential strength. Generally, the TD affects the energy, Z, S and G but has no effect on H because the topological parameter cancels out during computation.

Dimensions

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