Title: Relativistic mean field model based on realistic nuclear forces
Authors: Hirose, S ×
Serra, M
Ring, P
Otsuka, Taka
Akaishi, Y #
Issue Date: 2007
Publisher: Published for the American Physical Society by the American Institute of Physics
Series Title: Physical Review C, Nuclear Physics vol:75 issue:2
Article number: 024301
Abstract: In order to predict properties of asymmetric nuclear matter, we construct a relativistic mean field (RMF) model
consisting of one-meson exchange (OME) terms and point coupling (PC) terms. In order to determine the density
dependent parameters of this model, we use properties of isospin symmetric nuclear matter in combination with
derived from Brueckner calculations based on the Tamagaki potential. We show that the medium- and long-range
components of this G-matrix can be described reasonably well by our effective OME interaction. In order to
take into account the short-range part of the nucleon-nucleon interaction, which cannot be described well in this
manner, a point coupling term is added. Its analytical form is taken from a model based on chiral perturbation
theory. It contains only one additional parameter, which does not depend on the density. It is, together with the
parameters of the OME potentials adjusted to the equation of state of symmetric nuclear matter. We apply this
model for the investigation of asymmetric nuclear matter and find that the results for the symmetry energy as
well as for the equation of state of pure neutron matter are in good agreement with either experimental data or
with presently adopted theoretical predictions. In order to test the model at higher density, we use its equation of
state for an investigation of properties of neutron stars.
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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