Relativistic Mean-Field Models with Different Parametrizations of Density Dependent Couplings
Relativistic Mean-Field Models with Different Parametrizations of Density Dependent Couplings
复制标题
具有不同密度相关耦合参数化的相对论平均场模型
DOI：
10.3390/particles1010002
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发表时间：
2018
影响因子：
3
通讯作者：
S. Typel
中科院分区：
文献类型：
--
作者：
S. Typel
相对论平均场模型被成功地用于描述有限核和核物质。密度相关的介子-核子耦合的方法在大多数情况下假定特定的函数形式和对矢量密度的依赖。在这项工作中，参数化与更大的样本的功能和向量和标量密度的依赖关系进行了研究。它们是由有限核的拟合性质得到的。对称核物质和饱和以下的中子物质的描述质量和所得到的状态方程是非常相似的。然而，特征核物质参数，状态方程和对称性能量在超饱和密度显示出一些相关性的密度依赖性和功能形式的耦合的选择。确定的条件，可能会导致一些参数化的问题。
Relativistic mean-field models are successfully used for the description of finite nuclei and nuclear matter. Approaches with density-dependent meson-nucleon couplings assume specific functional forms and a dependence on vector densities in most cases. In this work, parametrizations with a larger sample of functions and dependencies on vector and scalar densities are investigated. They are obtained from fitting properties of finite nuclei. The quality of the description of nuclei and the obtained equations of state of symmetric nuclear matter and neutron matter below saturation are very similar. However, characteristic nuclear matter parameters, the equations of state and the symmetry energy at suprasaturation densities show some correlations with the choice of the density dependence and functional form of the couplings. Conditions are identified that can lead to problems for some of the parametrizations.
影响因子：
3.1
作者：
Dutra, M.;Lourenco, O.;Stevenson, P. D.
通讯作者：
Stevenson, P. D.