Isospin-dependent properties of asymmetric nuclear matter in relativistic mean-field models
| dc.creator | Chen, Lie-Wen | |
| dc.creator | Ko, Che Ming | |
| dc.creator | Li, Bao-An | |
| dc.date | 2007-09-06 | |
| dc.date | 2007-10-28 | |
| dc.date.accessioned | 2026-07-07T10:57:20Z | |
| dc.date.available | 2026-07-07T10:57:20Z | |
| dc.description | Using various relativistic mean-field models, including the nonlinear ones with meson field self-interactions, those with density-dependent meson-nucleon couplings, and the point-coupling models without meson fields, we have studied the isospin-dependent bulk and single-particle properties of asymmetric nuclear matter. In particular, we have determined the density dependence of nuclear symmetry energy from these different relativistic mean-field models and compare the results with the constraints recently extracted from analyses of experimental data on isospin diffusion and isotopic scaling in intermediate-energy heavy ion collisions as well as from measured isotopic dependence of the giant monopole resonances in even-A Sn isotopes. Among the 23 parameter sets in the relativistic mean-filed model that are commonly used for nuclear structure studies, only a few are found to give symmetry energies that are consistent with the empirical constraints. We have also studied the nuclear symmetry potential and the isospin-splitting of the nucleon effective mass in isospin asymmetric nuclear matter. We find that both the momentum dependence of the nuclear symmetry potential at fixed baryon density and the isospin-splitting of the nucleon effective mass in neutron-rich nuclear matter depend not only on the nuclear interactions but also on the definition of the nucleon optical potential. | |
| dc.description | 26 pages, 11 figures, 2 tables. Discussions and References added. Accepted version to appear in PRC | |
| dc.identifier | https://arxiv.org/abs/0709.0900 | |
| dc.identifier | http://arxiv.org/abs/0709.0900 | |
| dc.identifier | Phys.Rev.C76:054316,2007 | |
| dc.identifier | doi:10.1103/PhysRevC.76.054316 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/186718 | |
| dc.subject | Nuclear Theory | |
| dc.subject | Astrophysics | |
| dc.subject | Nuclear Experiment | |
| dc.title | Isospin-dependent properties of asymmetric nuclear matter in relativistic mean-field models | |
| dc.type | text |