Feynman-Hellmann theorem and the harmonic oscillator
References: Griffiths, David J. (2005), Introduction to Quantum Mechanics, 2nd Edition; Pearson Education – Problem 6.32. A useful theorem known as the Feynman-Hellmann theorem can be derived as...
View ArticleFeynman-Hellmann theorem: hydrogen atom mean values
References: Griffiths, David J. (2005), Introduction to Quantum Mechanics, 2nd Edition; Pearson Education – Problem 6.33. As an application of the Feynman-Hellmann theorem, we can derive the...
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