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Finite eigenfunctions in the WKB approximation

 

作者: U. Sukhatme,   A. Pagnamenta,  

 

期刊: American Journal of Physics  (AIP Available online 1991)
卷期: Volume 59, issue 10  

页码: 944-947

 

ISSN:0002-9505

 

年代: 1991

 

DOI:10.1119/1.16678

 

出版商: American Association of Physics Teachers

 

关键词: WKB APPROXIMATION;EIGENFUNCTIONS;HARMONIC OSCILLATORS;MORSE POTENTIAL;QUANTUM MECHANICS;PERTURBATION THEORY

 

数据来源: AIP

 

摘要:

A long‐standing problem and major shortcoming of semiclassical (WKB) bound‐state wave functions is their divergence at the classical turning points. Presently available regularization schemes are accurate but rather complicated. It is shown how finite wave functions can be simply obtained by reorganizing the WKB perturbation expansion in powers of ℏ and retaining appropriate higher‐order terms. The wave functions obtained by this method are compared with exactly known ones for the harmonic‐oscillator and Morse potentials.

 

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