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Singularity in Potential,Perturbation and Variational Methods |
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| Authors: | DING YiBing LI XueQian SHEN PengNian |
| Institution: | 1. CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China; 2. Physics Department, Graduate School of Academia Sinica, Beijing 100039, China; 3. Department of Physics, Nankai University, Tianjin 300071, China; 4. Institute of High Energy Physics, Academia Sinica, Beijing 100039, China; 5. Department of Physics, University of Milan, 20133 Milan, Italy |
| Abstract: | We carefully study the energy eigen-values and splitting of heavy quarkonia as there exist 1/r3 and δ3(r) singular terms in the potential which make a direct numerical solution of the Schrodinger equation impossible. We compare the results obtained in terms of perturbation and variational methods with various treatments. |
| Keywords: | singularity variational method |
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