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arXiv 1107.2497nucl-thastro-ph.SRhep-ph
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Dyson-Schwinger夸克模型下的混合星

Hybrid stars with the Dyson-Schwinger quark model

H. Chen, M. Baldo, G. F. Burgio, H. -J. Schulze

摘要:

我们研究了中子星内部的强子-夸克相变。对于强子部门,我们使用微观状态方程,涉及核子和超子内的Brueckner-Hartree-Fock多体理论与现实的两体和三体的力量。对于夸克物质的描述,我们采用Dyson-Schwinger方法,并与MIT袋模型进行了比较。我们计算了由两相组成的中子星内部结构,发现在Dyson-Schwinger模型下,强子-夸克相变只有在不考虑超子的情况下才发生,而只有在核子状态方程足够刚性的情况下,才有可能存在两个太阳质量的混合星.

英文摘要:

We study the hadron-quark phase transition in the interior of neutron stars. For the hadronic sector, we use a microscopic equation of state involving nucleons and hyperons derived within the Brueckner-Hartree-Fock many-body theory with realistic two-body and three-body forces. For the description of quark matter, we employ the Dyson-Schwinger approach and compare with the MIT bag model. We calculate the structure of neutron star interiors comprising both phases and find that with the Dyson-Schwinger model, the hadron-quark phase transition takes place only when hyperons are excluded, and that a two-solar-mass hybrid star is possible only if the nucleonic equation of state is stiff enough.

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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