夸克核热中子星的最大质量
Maximum Mass of the Hot Neutron Star with the Quark Core
摘要：
考虑了具有夸克核、夸克-强子物质混合相和强子物质壳的热中子星，确定了强子相和夸克相的物态方程，并在Gibbs条件下得到了混合相的物态方程。最后，我们计算了有夸克核的热中子星的结构，并与无夸克核的热中子星的结构进行了比较。对于夸克物质的计算，我们使用了MIT袋模型，其中系统的总能量被认为是粒子的动能加上袋常数。对于强子物质的计算，我们采用了最低阶约束变分（LOCV）形式。计算结果表明，有夸克核的热中子星的最大引力质量与无夸克核的结果有很大的不同。
英文摘要：
We have considered a hot neutron star with a quark core, a mixed phase of quark-hadron matter, and a hadronic matter crust and have determined the equation of state of the hadronic phase and the quark phase, we have then found the equation of state of the mixed phase under the Gibbs conditions. Finally, we have computed the structure of hot neutron star with the quark core and compared our results with those of the neutron star without the quark core. For the quark matter calculations, we have used the MIT bag model in which the total energy of the system is considered as the kinetic energy of the particles plus a bag constant. For the hadronic matter calculations, we have used the lowest order constrained variational (LOCV) formalism. Our calculations show that the results for the maximum gravitational mass of the hot neutron star with the quark core are substantially different from those of without the quark core.
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