Generalization of the Hellmann–Feynman theorem

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 parame...

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Bibliographic Details
Published in:Physics letters. A 2010-01, Vol.374 (6), p.819-822
Main Authors: Esteve, J.G., Falceto, Fernando, García Canal, C.
Format: Article
Language:English
Subjects:
Hellmann–Feynman theorem
Quantum mechanics
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Summary: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.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2009.12.005