Impact of Fock terms on the isospin properties of nuclear matter
1 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of China
2 Key Laboratory of Special Function Materials and Structure Design of Ministry of Education, Lanzhou 730000, People’s Republic of China
Published online: 11 May 2016
Several topics on the isospin properties of nuclear matter studied within the density-dependent relativistic Hartree-Fock theory are summarized. In detail, the effects of the Fock terms on the nuclear symmetry energy are listed, including the extra enhancement from the Fock terms of the isoscalar meson-nucleon coupling channels, the extra hyperon-induced suppression effect originating from the Fock channel, self-consistent tensor effects embedded automatically in the Fock diagrams, the enhanced density-dependent isospin-triplet potential part of the symmetry energy at high densities, a reduced kinetic symmetry energy at supranuclear density and so on. The results demonstrate the importance of the Fork diagram, especially from the isoscalar mesonnucleon coupling channels, on the isospin properties of the in-medium nuclear force.
© Owned by the authors, published by EDP Sciences - SIF, 2016
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