About the crossing of the energy levels of a parameter-dependent quantum-mechanical Hamiltonian
Letter to the Editor
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The purpose of this letter is to correct the lack of generality of one of the statements put forward in a recent article about the noncrossing rule in quantum mechanics. We illustrate the point by means of an exactly solvable model.
KeywordsAvoided crossings Noncrossing rule Parameter-dependent operators
© Springer International Publishing Switzerland 2015