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arXiv 1104.0132quant-ph
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自旋和赝自旋对称下广义Morse势Dirac方程的κ态近似解

An approximate κ state solutions of the Dirac equation for the generalized Morse potential under spin and pseudospin symmetry

Sameer M. Ikhdair

摘要:

利用改进的离心(伪离心)项近似方法,求解了任意自旋轨道量子数κ的广义Morse势的Dirac方程.利用Nikiforov-Uvarov方法的基本概念,在存在自旋和赝自旋对称性的情况下,得到了两个Dirac粒子的解析束缚态能量本征值和相应的上、下旋量分量.研究了κ= \pm 1(l=l=0,s波)的特殊情况,非相对论极限和α为零时的极限(Kratzer势模型).并与其它方法所得解进行了比较。关键词:狄拉克方程,自旋对称性,赝自旋对称性,广义莫尔斯势,

英文摘要:

By using an improved approximation scheme to deal with the centrifugal (pseudo-centrifugal) term, we solve the Dirac equation for the generalized Morse potential with arbitrary spin-orbit quantum number κ. In the presence of spin and pseudospin symmetry, the analytic bound state energy eigenvalues and the associated upper- and lower-spinor components of two Dirac particles are found by using the basic concepts of the Nikiforov-Uvarov method. We study the special cases when κ=\pm1 (l=l=0, s-wave), the non-relativistic limit and the limit when α becomes zero (Kratzer potential model). The present solutions are compared with those obtained by other methods. Keywords: Dirac equation, spin symmetry, pseudospin symmetry, generalized Morse potential,

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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