当前位置: X-MOL 学术Symmetry › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Forms of the Symmetry Energy Relevant to Neutron Stars
Symmetry ( IF 2.940 ) Pub Date : 2020-06-01 , DOI: 10.3390/sym12060898
Ilona Bednarek , Jan Sładkowski , Jacek Syska

The symmetry energy is an invaluable tool for studying dense nuclear matter. Unfortunately, its definition is somewhat implicit, and therefore, phenomenological methods are necessary to describe experimental facts. This paper discusses the differences arising from the use of Taylor series expansion and Pade approximation to determine theoretically the symmetry energy and the possible consequences for neutron stars. For this purpose, a form of the nuclear matter equation of state that explicitly depends on the symmetry energy is used. The obtained results point out that the applied approximations lead to modifications of the equilibrium proton fractions and equation of state, especially in their high-density limit. However, this effect is small near the saturation density n 0 .

中文翻译:

与中子星有关的对称能量形式

对称能是研究致密核物质的宝贵工具。不幸的是,它的定义有些含蓄,因此,必须使用现象学方法来描述实验事实。本文讨论了使用泰勒级数展开和帕德近似从理论上确定中子星的对称能量和可能的后果所产生的差异。为此,使用了一种明确依赖于对称能量的核物质状态方程形式。获得的结果指出,所应用的近似导致平衡质子分数和状态方程的修改,特别是在它们的高密度极限中。然而,这种影响在饱和密度 n 0 附近很小。
更新日期:2020-06-01
down
wechat
bug