Abstract
The electron correlation effect on the charge exchange problem in the time-dependent Newns-Anderson model with U→∞ is discussed in the approach of the expanded wavefunction in terms of electron-hole pair excitation. Only a limited case is analyzed rigorously on the expansion terms up to the eighth order of the admixture coupling constant to conclude that the same expression holds for the non-adiabatic exchange of the total charge as in the non-interacting case. This conclusion is conjectured to hold somewhat generally.
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