Abstract
We investigate in detail the Coulomb sum rule of 40Ca with momentum transfer q = 2.0 fm −1, in the framework of traditional nuclear many-body theory, i.e. by using the G-matrix and the extended RPA theory. We have separately evaluated the one-body part (total charge Z) and the two-body part (two-body correlation function) of the sum rule. A considerable part of the missing charge in the existing experimental data is shown to be explained by the ground-state correlations induced by the tensor force. It is also found that the one-body part is not fully observed in the existing experimental data. Problems left to be discussed are pointed out.
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