Generalization of the Hellmann-Feynman theorem
classification
🪐 quant-ph
keywords
dependshamiltonianhellmann-feynmanparametertheoremcasesconnecteddefinition
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The well known Hellmann-Feynman theorem of Quantum Mechanics connected with the derivative of the eigenvalues with respect to a parameter upon which the Hamiltonian depends, is generalized to include cases in which the domain of definition of the Hamiltonian of the system also depends on that parameter.
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