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arXiv 0910.4087nucl-th
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相对论Hartree-Fock理论中的中子星和强子-夸克相变

Neutron Stars in the Relativistic Hartree-Fock Theory and Hadron-Quark Phase Transition

Bao Yuan Sun, U. Lombardo, F. Burgio, Jie Meng

摘要:

基于强子物质的密度依赖相对论Hartree-Fock理论(DDRHF),研究了中子星的性质,并与密度依赖相对论平均场论(DDRMF)的结果进行了比较.虽然得到了相似的物态方程,但对于中子星物质,DDRHF计算得到的质子、电子和μ子在重子密度较高时所占的比例比DDRMF计算的大。中子星的最大质量在2.3 M $_\odot$和2.5 M $_\odot$之间,相应的半径在11.7 km和12.5 km之间。此外,利用夸克相的MIT袋模型研究了中子星中强子物质到夸克物质的相变。过渡研究在吉布斯和麦克斯韦结构。

英文摘要:

Based on the density-dependent relativistic Hartree-Fock theory (DDRHF) for hadronic matter, the properties of neutron stars have been studied and compared with the results from the density-dependent relativistic mean field theory (DDRMF). Though similar equations of state are obtained, DDRHF calculations give larger fractions of proton, electron and muon at high baryon density for neutron star matter than the ones from DDRMF. The maximum masses of neutron stars lie between 2.3 M$_\odot$ and 2.5 M$_\odot$, and the corresponding radii between 11.7 km and 12.5 km. In addition, the phase transition from hadronic matter to quark matter in neutron stars is studied by using the MIT bag model for the quark phase. The transition is studied in both Gibbs and Maxwell constructions.

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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