Solution of the Bethe-Goldstone equation with an exact propagator

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Abstract
The accuracy of the usual angle-averaging approximations involved in the solution of the nuclear matter Bethe-Goldstone equation is tested numerically in the case where self-energy effects are taken into account. It is found that the errors stemming from the additional angle averaging, which is needed to get rid of the ‘‘energy denominator’’ angular dependence, are much smaller than those already introduced by the Pauli operator angle averaging. These results apply to both the bound and scattering regimes. © 1996 The American Physical Society.