Isovector channel of quark-meson-coupling model and its effect on symmetry energy
arXiv:1003.0271 · doi:10.1016/j.nuclphysa.2011.07.001
Abstract
The non-relativistic approximation of the quark-meson-coupling model has been discussed and compared with the Skyrme-Hartree-Fock model which includes spin exchanges. Calculations show that the spin-exchange interaction has important effect on the descriptions of finite nuclei and nuclear matter through the Fock exchange. Also in the quark-meson-coupling model, it is the Fock exchange that leads to a nonlinear density-dependent isovector channel and changes the density-dependent behavior of the symmetry energy.
20 pages, 9 figures and 1 table, accepted for publication in Nuclear Physics A
References in corpus (7)
- The Skyrme Interaction in finite nuclei and nuclear matter
- Nuclear symmetry energy and its density slope at normal density extracted from global nucleon optical potentials
- Cold uniform matter and neutron stars in the quark-mesons-coupling model
- Isospin-dependent properties of asymmetric nuclear matter in relativistic mean-field models
- Why is the nuclear symmetry energy so uncertain at supra-saturation densities?
- Low density expansion and isospin dependence of nuclear energy functional: comparison between relativistic and Skyrme models
- Isospin effects and the density dependence of the nuclear symmetry energy