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arXiv 1606.02672hep-ph
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用Polyakov环补充的Nambu Jona-Lasinio模型研究色超导性

Color superconductivity in the Nambu Jona-Lasinio model complemented by a Polyakov loop

Eric Blanquier

摘要:

采用Nambu和Jona-Lasinio模型(NJL)研究了色超导电性。这一个被耦合到一个Polyakov环,形成PNJL模型。考虑了$μ$依赖的Polyakov回路电位。所提出的工作的一个目的是描述所需的分析计算,以建立方程求解,在所有的治疗情况下。它们涉及SU(3)f × SU(3)c描述中的正常夸克相、2味色超导相和色味锁定相。根据温度T、化学势$μ_{f}$或根据密度$ρ_{f}$进行计算,有或没有同位旋对称性。在所得到的结果中,发现在低温下,手征对称性的恢复、解除禁闭跃迁以及正常夸克相和2味色超导相之间的跃迁都是在相同化学势下通过一级相变发生的.此外,在$ρ_{q}$、$ρ_{s}$平面中鉴定出sSC相。

英文摘要:

The color superconductivity was studied with an adaptation of the Nambu and Jona-Lasinio model (NJL). This one was coupled to a Polyakov loop, to form the PNJL model. A $μ$-dependent Polyakov loop potential was considered. An objective of the presented works was to describe the analytical calculations required to establish the equations to be solved, in all of the treated cases. They concerned the normal quark phase, the 2-flavor color-superconducting and the color-flavor-locked phases, in an SU(3)f X SU(3)c description. The calculations were performed according to the temperature T, the chemical potentials $μ_{f}$ or according to the densities $ρ_{f}$, with or without the isospin symmetry. Among the obtained results, it was found that at low T, the restoration of the chiral symmetry, the deconfinement transition and the transition between the normal quark and 2-flavor color-superconducting phases occur via first order phase transitions at the same chemical potential. Moreover, an sSC phase was identified in the $ρ_{q}$, $ρ_{s}$ plane.

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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