We investigate nuclear matter properties in the relativistic Brueckner approach. The in-medium on-shell T-matrix is represented covariantly by five Lorentz invariant amplitudes from which we deduce directly the nucleon self-energy. We discuss the ambiguities of this approach and the failure of previously used covariant representations in reproducing the nucleon self-energies on the Hartree-Fock...

A survey of pairing properties of nucleonic matter is presented that includes the off-shell propagation associated with short-range and tensor correlations. For this purpose, the gap equation has been solved in its most general form employing the complete energy and momentum dependence of the normal self-energy contributions. The latter correlations include the self-consistent calculation of th...

In this paper, the Hartree-Fock equations are proved to be the non relativistic limit of the Dirac-Fock equations as far as convergence of \stationary states" is concerned. This property is used to derive a meaningful deenition of \ground state" energy and \ground state" solutions for the Dirac-Fock model.

In this paper, we describe a novel method for robust and accurate iterative solution of the self-consistent Hartree-Fock equation in R3 based on the idea of tensorstructured computation of the electron density and the nonlinear Hartree and (nonlocal) Hartree-Fock exchange operators at all steps of the iterative process. We apply the self-consistent field (SCF) iteration to the Galerkin discreti...