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arXiv 1509.00841nucl-thastro-ph.SRhep-ph
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混合星型结构的场关联函数法

Hybrid star structure with the Field Correlator Method

G. F. Burgio, D. Zappala'

摘要:

利用场关联函数方法(FCM)建立的状态方程(EoS),研究了色味锁定相位与混合星夸克物质核描述的相关性.对于强子相,我们使用微观的Brueckner-Hartree-Fock(BHF)多体理论和相对论的Dirac-Brueckner(DBHF)多体理论。我们发现相变的主要特征与夸克-反夸克势$V_1$、胶子凝聚$G_2$和色味超导能隙$Δ$的大小直接相关。我们确认,之间的映射的FCM和CSS(恒定声速)参数化保持真实的情况下,即使成对的夸克物质。本文还研究了强子相中超子的存在及其对混合星质量-半径关系的影响。

英文摘要:

We explore the relevance of the color-flavor locking phase in the equation of state (EoS) built with the Field Correlator Method (FCM) for the description of the quark matter core of hybrid stars. For the hadronic phase, we use the microscopic Brueckner-Hartree-Fock (BHF) many-body theory, and its relativistic counterpart, i.e. the Dirac-Brueckner (DBHF). We find that the main features of the phase transition are directly related to the values of the quark-antiquark potential $V_1$, the gluon condensate $G_2$ and the color-flavor superconducting gap $Δ$. We confirm that the mapping between the FCM and the CSS (constant speed of sound) parameterization holds true even in the case of paired quark matter. The inclusion of hyperons in the hadronic phase and its effect on the mass-radius relation of hybrid stars is also investigated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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