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[en] The spheroidal wave functions are found to have extensive applications in many branches of physics and mathematics. We use the perturbation method in supersymmetric quantum mechanics to obtain the analytic ground eigenvalue and the ground eigenfunction of the angular spheroidal wave equation at low frequency in a series form. Using this approach, the numerical determinations of the ground eigenvalue and the ground eigenfunction for small complex frequencies are also obtained. (general)
Journal
Chinese Physics. B; ISSN 1674-1056; 
; v. 20(1); [7 p.]
; v. 20(1); [7 p.]