Geodesic
Some properties of stationary states of two-level systems
Teoretičeskaâ i matematičeskaâ fizika, Tome 108 (1996) no. 1, pp. 69-78 
V. A. Burdov. Some properties of stationary states of two-level systems. Teoretičeskaâ i matematičeskaâ fizika, Tome 108 (1996) no. 1, pp. 69-78. http://geodesic.mathdoc.fr/item/TMF_1996_108_1_a4/
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     title = {Some properties of stationary states of two-level systems},
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     year = {1996},
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     number = {1},
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     url = {http://geodesic.mathdoc.fr/item/TMF_1996_108_1_a4/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

It is shown that some function $J(x)$ is a constant at any point on $x$-axis, when a change of the potential energy of two-level system is arbitrary. The estimations of the LCAO method's accuracy are presented for the wave functions of a one-dimensional two-level system.

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