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arXiv · hep-ph/9902330

Singularity in Potential, Perturbation and Variational Methods

Yi-Bing Ding·Xue-Qian Li·Peng-Nian Shen
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Abstract

In this work, we carefully study the energy eigen-values and splitting of heavy quarkonia as there exist $1/r^3$ and $δ^3(\vec r)$ singular terms in the potential which make a direct numerical solution of the Schrödinger equation impossible. We compare the results obtained in terms of perturbation and variational methods with various treatments.

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Yi-Bing Ding, Xue-Qian Li, Peng-Nian Shen. 1999-02-12. Singularity in Potential, Perturbation and Variational Methods. https://doi.org/10.1088/0253-6102%2F33%2F4%2F613

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