Abstract
The spectral concentration of arbitrary order for the Stark effect is proved to exist for a large class of Hamiltonians appearing in nonrelativistic and relativistic quantum mechanics. The results are consequences of an abstract result about the spectral concentration for self-adjoint operators. A general form of the adiabatic theorem of quantum mechanics, generalizing an earlier result of the author as well as some results by Lenard, is also proved.
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Communicated by B. Simon
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Nenciu, G. Adiabatic theorem and spectral concentration. Commun.Math. Phys. 82, 121–135 (1981). https://doi.org/10.1007/BF01206948
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DOI: https://doi.org/10.1007/BF01206948