The Hellmann–Feynman theorem, the comparison theorem, and the envelope theory
The envelope theory is a convenient method to compute approximate solutions for bound state equations in quantum mechanics. It is shown that these approximate solutions obey a kind of Hellmann–Feynman theorem, and that the comparison theorem can be applied to these approximate solutions for two orde...
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| Format: | Article |
| Language: | English |
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Elsevier
2015-01-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379715000662 |