Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-09-19
Phys.Rev.C79:024308,2009
Physics
Nuclear Physics
Nuclear Theory
16 pages, 7 figures
Scientific paper
10.1103/PhysRevC.79.024308
Properties of asymmetric nuclear matter are derived from various many-body approaches. This includes phenomenological ones like the Skyrme Hartree-Fock and relativistic mean field approaches, which are adjusted to fit properties of nuclei, as well as more microscopic attempts like the Brueckner-Hartree-Fock approximation, a self-consistent Greens function method and the so-called $V_{lowk}$ approach, which are based on realistic nucleon-nucleon interactions which reproduce the nucleon-nucleon phase shifts. These microscopic approaches are supplemented by a density-dependent contact interaction to achieve the empirical saturation property of symmetric nuclear matter. The predictions of all these approaches are discussed for nuclear matter at high densities in $\beta$-equilibrium. Special attention is paid to behavior of the isovector component of the effective mass in neutron-rich matter.
Gad Kh.
Gögelein P.
Hassaneen Kh. S. A.
Müther Herbert
van Dalen} N. E. E.
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