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arXiv 1401.5380nucl-thastro-ph.SRhep-ph
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来自多夸克相互作用的重混合星

Heavy hybrid stars from multi-quark interactions

Sanjin Benic

摘要:

在标量通道和矢量通道中分别考虑8夸克相互作用的双味Nambu-Jona-Lasinio模型框架下,我们探讨了获得重混合星的可能性。8-夸克标量通道的主要影响是减少夸克物质的开始,而8-夸克矢量通道的作用是在高密度下使状态方程变硬。在4夸克矢量通道较小的参数空间和8夸克矢量通道较大的参数空间内,发现具有$2 M_\odot$及以上的稳定恒星在其核心中含有夸克物质。

英文摘要:

We explore the possibility of obtaining heavy hybrid stars within the framework of the two flavor Nambu--Jona-Lasinio model with 8-quark interactions in the scalar and in the vector channel. The main impact of the 8-quark scalar channel is to reduce the onset of quark matter, while the 8-quark vector channel acts to stiff the equation of state at high densities. Within the parameter space where the 4-quark vector channel is small, and the 8-quark vector channel sizeable, stable stars with $2 M_\odot$ and above are found to hold quark matter in their cores.

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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