The equation of state provided by effective models of strongly interacting matter should comply with the restrictions imposed by current astrophysical observations on compact stars. Using the equation of state given by the (axial‐)vector meson extended linear sigma model, we determine the mass–radius relation and study whether these restrictions are satisfied under the assumption that most of the star is filled with quark matter. We study the dependence of the mass–radius relation on the parameters of the model.

中文翻译：

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扩展线性西格玛模型的混合恒星特性

有效的强相互作用物质模型提供的状态方程应符合当前对紧凑恒星的天文学观测所施加的限制。使用（轴向）矢量介子扩展线性西格玛模型给出的状态方程，我们确定了质量半径关系，并研究了在大多数恒星充满夸克物质的假设下是否满足这些限制条件。我们研究了质量-半径关系对模型参数的依赖性。