Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-12-14
Eur.Phys.J. A31 (2007) 29-42
Physics
Nuclear Physics
Nuclear Theory
34 pages, 9 figures, submitted to Eur. Phys. J. A
Scientific paper
10.1140/epja/i2006-10165-x
We present Dirac-Brueckner-Hartree-Fock calculations for isospin asymmetric nuclear matter which are based on improved approximations schemes. The potential matrix elements have been adapted for isospin asymmetric nuclear matter in order to account for the proton-neutron mass splitting in a more consistent way. The proton properties are particularly sensitive to this adaption and its consequences, whereas the neutron properties remains almost unaffected in neutron rich matter. Although at present full Brueckner calculations are still too complex to apply to finite nuclei, these relativistic Brueckner results can be used as a guidance to construct a density dependent relativistic mean field theory, which can be applied to finite nuclei. It is found that an accurate reproduction of the Dirac-Brueckner-Hartree-Fock equation of state requires a renormalization of these coupling functions.
Faessler Amand
Fuchs Ch.
van Dalen} N. E. E.
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