论文标题
热中子星的状态方程 - ii。外来粒子自由度的作用
Equations of state for hot neutron stars -- II. The role of exotic particle degrees of freedom
论文作者
论文摘要
爆炸性的天体物理系统（例如超新星或紧凑型星二进制合并）提供了可以使外来自由度人口的条件。在核物质的协变量功能理论中，我们构建了几个国家的通用方程式，除了重骨八位字节外，还占$δ（1232）$共振状态。 $δ$ admixed的核物质的热力学稳定性在电荷分数消失的情况下进行了研究，$ y_q = 0.01 $和$ y_q = 0.5 $，以及对标量和矢量中型场的耦合常数的范围。 \ textsc {compose}数据库中目前可用的具有exotica的状态模型的通用方程将进一步审查；对于它们的选择，我们研究了与核心偏曲超新星和二进制中子星星合并相关的热力学条件的热特性。由Hyperons引起的修改，$δ（1232）$，$ k^ - $，pions和Quarks。
Explosive astrophysical systems - such as supernovae or compact star binary mergers - provide conditions where exotic degrees of freedom can be populated. Within the covariant density functional theory of nuclear matter we build several general purpose equations of state which, in addition to the baryonic octet, account for $Δ(1232)$ resonance states. The thermodynamic stability of $Δ$-admixed nuclear matter is investigated in the limiting case of vanishing temperature for charge fractions $Y_Q=0.01$ and $Y_Q=0.5$ and wide ranges of the coupling constants to the scalar and vector mesonic fields. General purpose equation of state models with exotica presently available on the \textsc{CompOSE} database are further reviewed; for a selection of them we then investigate thermal properties for thermodynamic conditions relevant for core-collapse supernovae and binary neutron star mergers. Modifications induced by hyperons, $Δ(1232)$, $K^-$, pions and quarks are discussed.
