Solution of the Bethe-Goldstone equation with an exact propagator.

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. \textcopyright{} 1996 The American Physical Society.