Journal
NUCLEAR PHYSICS A
Volume 744, Issue -, Pages 227-248Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysa.2004.08.019
Keywords
nuclear matter; relativistic Brueckner approach
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The properties of asymmetric nuclear matter have been investigated in a relativistic Dirac-Brueckner-Hartree-Fock framework using the Bonn A potential. The components of the self-energies are extracted by projecting on Lorentz invariant amplitudes. Furthermore, the optimal representation scheme for the T-matrix, the subtracted T-matrix representation, is applied and the results are compared to those of other representation schemes. Of course, in the limit of symmetric nuclear matter our results agree with those found in literature. The binding energy E-b fulfills the quadratic dependence on the asymmetry parameter and the symmetry energy is 34 MeV at saturation density. Furthermore, a neutron-proton effective mass splitting of m(n)(*) < m(p)(*) is found. In addition, results are given for the mean-field effective coupling constants. (C) 2004 Elsevier B.V. All rights reserved.
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