论文标题
中子星和双硬壁的相图
Neutron stars and phase diagram from a double hard-wall
论文作者
论文摘要
中子星核心中核物质的描述避免了QCD研究的主要工具，例如扰动理论和该理论的晶格表述。最近，全息范式（通过自上而下的模型和自下而上的模型）在定性和定量上都带来了许多令人鼓舞的结果。我们介绍了对中子星核的描述的方法，依赖于（双重）硬壁类型的简单模型：我们讨论了有关在模型中出现高密度均质核物质的性质的结果，其中包括Quarkyonic阶段，包括中子星的Mass-Radius Relation，以及我们已经找到的状态相当僵硬的状态。我们展示了尽管采用了非常简单的模型，但对于适当的校准，我们能够获得仅略有略微落在半径和潮汐变形性上的观察界的中子星。
Description of nuclear matter in the core of neutron stars eludes the main tools of investigation of QCD, such as perturbation theory and the lattice formulation of the theory. Recently, the application of the holographic paradigm (both via top-down and bottom-up models) to this task has led to many encouraging results, both qualitatively and quantitatively. We present our approach to the description of neutron star cores, relying on a simple model of the (double) hard-wall type: we discuss results concerning the nature of homogeneous nuclear matter at high density emerging from the model including a quarkyonic phase, the mass-radius relation for neutron stars, as well as the rather stiff equation of state we have found. We show how, despite the very simple model employed, for an appropriate calibration we are able to obtain neutron stars that only slightly fall short of the observational bounds on radius and tidal deformability.
