论文标题
Lee-Yang启发的能量密度功能，包括$ p $ - 波散射的贡献
Lee-Yang-inspired energy-density functional including contributions from $p$-wave scattering
论文作者
论文摘要
[M.中提出的Elyo功能Grasso，D。Lacroix和C. J. Yang，物理。 C \ textbf {95}，054327（2017）]属于受有效场理论（EFTS）启发的能量密度函数（EDFS）家族，并受\ textit {ab-initio} pseudo-data的约束。我们在这里提出了此EDF的扩展名，该扩展还解释了其在其得出的低密度扩展中出现的第一个$ p $ - 波。结果表明，功能所基于的ANSATZ的这种丰富导致中音系统描述的显着改善，尤其是在用于调整参数的伪data集之外，尤其是在制度中。作为说明性应用，考虑了中子星的质量 - 拉迪乌斯关系。与其初始版本相反，新功能预测了与最近观察结果一致的值。
The ELYO functional proposed in [M. Grasso, D. Lacroix, and C. J. Yang, Phys. Rev. C \textbf{95}, 054327 (2017)] belongs to the family of energy-density functionals (EDFs) inspired by effective-field theories (EFTs) and constrained by \textit{ab--initio} pseudo-data. We present here an extension of this EDF which also accounts for the first $p$-wave term appearing in the low-density expansion from which it derives. It is shown that this enrichment of the ansatz on which the functional is based leads to a significant improvement of the description of neutronic systems, especially in regimes besides the pseudo--data set employed to adjust the parameters. As an illustrative application, the mass-radius relation of neutron stars is considered. In contrast to its initial version, the new functional predicts values which are qualitatively consistent with recent observations.
