Comments on the paper ‘‘On the WKBJ approximation’’ [J. Math. Phys. 28, 556 (1987)]
作者： Nanny Fröman , Per Olof Fröman
DOI: 10.1063/1.527988
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摘要: Attention is drawn to the fact that ‘‘standard form for generalized WKBJ approximation’’ of El Sawi [J. Math. Phys. 28, 556 (1987)] already had been derived by N. Froman [Ark. Fys. 32, 541 (1966)].
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sci-hub.se 参考文章(5)
N. Fröman, P. O. Fröman, On modifications of phase integral approximations of arbitrary order Il Nuovo Cimento B. ,vol. 20, pp. 121- 132 ,(1974) , 10.1007/BF02721113
J.A Campbell, Computation of a class of functions useful in the phase-integral approximation. I. Results Journal of Computational Physics. ,vol. 10, pp. 308- 315 ,(1972) , 10.1016/0021-9991(72)90068-X
Örjan Dammert, Per Olof Fröman, N. Fröman’s phase‐integrals versus JWKB: Documentation of the advantages of the former in higher‐order approximations Journal of Mathematical Physics. ,vol. 21, pp. 1683- 1687 ,(1980) , 10.1063/1.524616
Nanny Fröman, Per Olof Fröman, A direct method for modifying certain phase-integral approximations of arbitrary order Annals of Physics. ,vol. 83, pp. 103- 107 ,(1974) , 10.1016/0003-4916(74)90379-0
M. El Sawi, On the WKBJ approximation Journal of Mathematical Physics. ,vol. 28, pp. 556- 558 ,(1987) , 10.1063/1.527640