论文标题
纯中子物质的未结合性质施加的中子物质特征之间的固有相关性
Intrinsic Correlations Among Characteristics of Neutron-rich Matter Imposed by the Unbound Nature of Pure Neutron Matter
论文作者
论文摘要
纯中性物质（PNM）的无界性质需要对称核物质（SNM）EOS参数（不可压缩性$ k_0 $，skewness $ j_0 $和kurtosis $ i_0 $）与那些（slope $ l $，curvature $ k _ k _ {sym s sym sym}} $ $ j _ {\ rm {sym}} $）表征对称能量独立于任何核能多体理论。我们以更好地限制核对称能量的鲜为人知的高密度行为来研究这些内在相关性及其应用。发现了连接SNM EOS特性与核对称能量的几种新型相关性。特别是，在近似值的最低点上，斜率$ l $的大部分部分，曲率$ k _ {\ rm {sym}} $和skewness $ j _ {\ rm {sym}} $的对称能量是$ l \ \ k_0/3，k_0/3，k_0/3，k_0/3，k_0/3， lj_0/2k_0 $和$ j _ {\ rm {sym}}} \ ailt of I_0l/3k_0 $。可以根据高阶EOS参数的较小比率来编写对这些简单关系的高阶校正。某些EOS参数之间产生的固有相关性很好地繁殖了它们的关系，这些关系由各种微观核多体型理论和现象学模型预测，这些模型受到文献中陆地实验和天体物理学观察的可用数据的约束。 PNM的未结合性质是基本的，并且表征SNM EOS和对称能量的EOS参数之间所需的固有相关性是通用的。这些固有的相关性不仅为一致性检查提供了一种新颖和模型独立的工具，还可以通过使用较小不确定性的那些富含中子物质的物质的高密度性能。
The unbound nature of pure neutron matter (PNM) requires intrinsic correlations between the symmetric nuclear matter (SNM) EOS parameters (incompressibility $K_0$, skewness $J_0$ and kurtosis $I_0$) and those (slope $L$, curvature $K_{\rm{sym}}$ and skewness $J_{\rm{sym}}$) characterizing the symmetry energy independent of any nuclear many-body theory. We investigate these intrinsic correlations and their applications in better constraining the poorly known high-density behavior of nuclear symmetry energy. Several novel correlations connecting the characteristics of SNM EOS with those of nuclear symmetry energy are found. In particular, at the lowest-order of approximations, the bulk parts of the slope $L$, curvature $K_{\rm{sym}}$ and skewness $J_{\rm{sym}}$ of the symmetry energy are found to be $L\approx K_0/3, K_{\rm{sym}}\approx LJ_0/2K_0$ and $J_{\rm{sym}}\approx I_0L/3K_0$, respectively. High-order corrections to these simple relations can be written in terms of the small ratios of high-order EOS parameters. The resulting intrinsic correlations among some of the EOS parameters reproduce very nicely their relations predicted by various microscopic nuclear many-body theories and phenomenological models constrained by available data of terrestrial experiments and astrophysical observations in the literature. The unbound nature of PNM is fundamental and the required intrinsic correlations among the EOS parameters characterizing both the SNM EOS and symmetry energy are universal. These intrinsic correlations provide a novel and model-independent tool not only for consistency checks but also for investigating the poorly known high-density properties of neutron-rich matter by using those with smaller uncertainties.
