论文标题
与扩展线性sigma模型的混合恒星结构：初步结果
Hybrid star construction with the extended linear sigma model: preliminary results
论文作者
论文摘要
紧凑型恒星的内部通常分为两个主要部分，外部称为地壳，内部称为核心。这些部分组成有几种可能性。一个是混合恒星，其中外壳包含核物质，而内核则包含夸克物质。由于在大型的重子密度下可以使用有效的模型，而且核和夸克物质通常由不同的模型描述，因此需要对这两个部分进行一些统一。我们使用扩展的线性Sigma模型为复合模型显示了两种不同的方法，以及混合星构建体的一些最新方法，用于对核心的夸克物质进行建模。
The interior of compact stars is usually divided into two major parts, the outer part called crust and the inner part called core. There are several possibilities for the composition of these parts. One is a hybrid star, in which the crust contains nuclear matter, while the inner core contains quark matter. Since at large baryon densities one can work with effective models, and nuclear and quark matter are usually described by different models, some unification of the two parts is needed. We show two different approaches for a composite model and some recent developments in hybrid star constructions using the extended linear sigma model for modeling the quark matter at the core.
