dorsal/arxiv
View SchemaRelativistic model for nuclear matter and atomic nuclei with momentum-dependent self-energies
| Authors | S. Typel |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0501056 |
| URL | https://arxiv.org/abs/nucl-th/0501056 |
| DOI | 10.1103/PhysRevC.71.064301 |
| Journal | Phys.Rev. C71 (2005) 064301 |
Abstract
The Lagrangian density of standard relativistic mean-field (RMF) models with density-dependent meson-nucleon coupling vertices is modified by introducing couplings of the meson fields to derivative nucleon densities. As a consequence, the nucleon self energies, that describe the effective in-medium interaction, become momentum dependent. In this approach it is possible to increase the effective (Landau) mass of the nucleons, that is related to the density of states at the Fermi energy, as compared to conventional relativistic models. At the same time the relativistic effective (Dirac) mass is kept small in order to obtain a realistic strength of the spin-orbit interaction. Additionally, the empirical Schroedinger-equivalent central optical potential from Dirac phenomenology is reasonably well described. A parametrization of the model is obtained by a fit to properties of doubly magic atomic nuclei. Results for symmetric nuclear matter, neutron matter and finite nuclei are discussed.
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"abstract": "The Lagrangian density of standard relativistic mean-field (RMF) models with\ndensity-dependent meson-nucleon coupling vertices is modified by introducing\ncouplings of the meson fields to derivative nucleon densities. As a\nconsequence, the nucleon self energies, that describe the effective in-medium\ninteraction, become momentum dependent. In this approach it is possible to\nincrease the effective (Landau) mass of the nucleons, that is related to the\ndensity of states at the Fermi energy, as compared to conventional relativistic\nmodels. At the same time the relativistic effective (Dirac) mass is kept small\nin order to obtain a realistic strength of the spin-orbit interaction.\nAdditionally, the empirical Schroedinger-equivalent central optical potential\nfrom Dirac phenomenology is reasonably well described. A parametrization of the\nmodel is obtained by a fit to properties of doubly magic atomic nuclei. Results\nfor symmetric nuclear matter, neutron matter and finite nuclei are discussed.",
"arxiv_id": "nucl-th/0501056",
"authors": [
"S. Typel"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.71.064301",
"journal_ref": "Phys.Rev. C71 (2005) 064301",
"title": "Relativistic model for nuclear matter and atomic nuclei with momentum-dependent self-energies",
"url": "https://arxiv.org/abs/nucl-th/0501056"
},
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