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Solution of the Dirac Equation for Ring-Shaped Modified Kratzer Potential

Authors:	CHENG Yan-Fu and DAI Tong-Qing

Affiliation:	College of Electronics and Information Engineering,South-Central University for Nationalities, Wuhan 430074, China

Abstract:	We propose a new exactly solvable potential which is formed bymodified Kratzer potential plus a new ring-shaped potentialηcot²θ/r². The solutions of the Dirac equation withequal scalar and vector ring-shaped modified Kratzer potential arefound by using the Nikiforov-Uvarov method. The nonrelativisticlimit of the energy spectrum has been discussed.

Keywords:	Dirac equation solution ring-shaped modified Kratzer potential
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