In this work, we present the analytical solutions of Dirac equation for modified Kratzer potential in the pseudospin and spin symmetry limits using the formula method. The energies of the pseudospin and spin symmetry limit are obtained analytically and numerically. The numerical values are compared with those obtained in literature. Furthermore, we study the thermodynamic properties of some diatomic molecules within the nonrelativistic spin symmetry limits.

中文翻译：

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狄拉克方程和具有修正克拉泽势的热力学性质


在这项工作中，我们使用公式方法提出了赝自旋和自旋对称极限下修正克拉泽势的狄拉克方程的解析解。通过分析和数值计算获得了赝自旋和自旋对称极限的能量。将数值与文献中获得的数值进行比较。此外，我们研究了非相对论自旋对称极限内一些双原子分子的热力学性质。