论文标题
用张量耦合的相对论能量密度函数的参数化
Parametrisations of relativistic energy density functionals with tensor couplings
论文作者
论文摘要
将相对论密度与核和核物质的最小密度依赖性核子 - 膜耦合功能扩展，以包括核子的张量耦合到矢量膜。探索了最小耦合对向量或标量密度的依赖性。通过对核可观察物的拟合，具有自兼而不确定的核可观察物，从而获得了新的参数。确定了饱和的相应核物质参数，包括其不确定性。当考虑张量耦合时，发现核观察物的描述的描述，特别是对于结合能和衍射半径的改进，并伴随着dirac有效质量的增加。研究了所有模型的对称核物质和纯中子物质的状态方程。探索了核对称能，狄拉克有效质量和标量密度的密度依赖性。由于标量自我强度的重排贡献导致狄拉克有效的质量消失，因此使用耦合标量依赖性依赖的参数依赖性的高密度问题被发现。
The relativistic density functional with minimal density dependent nucleon-meson couplings for nuclei and nuclear matter is extended to include tensor couplings of the nucleons to the vector mesons. The dependence of the minimal couplings on either vector or scalar densities is explored. New parametrisations are obtained by a fit to nuclear observables with uncertainties that are determined self-consistently. The corresponding nuclear matter parameters at saturation are determined including their uncertainties. An improvement in the description of nuclear observables, in particular for binding energies and diffraction radii, is found when tensor couplings are considered, accompanied by an increase of the Dirac effective mass. The equations of state for symmetric nuclear matter and pure neutron matter are studied for all models. The density dependence of the nuclear symmetry energy, the Dirac effective masses and scalar densities is explored. Problems at high densities for parametrisations using a scalar density dependence of the couplings are identified due to the rearrangement contributions in the scalar self-energies that lead to vanishing Dirac effective masses.
