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arXiv 2509.02489hep-ph
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在Nambu-Jona-Lasinio模型中研究重子

Baryons in the Nambu Jona-Lasinio models

Eric Blanquier

AI总结:

本文基于Nambu-Jona-Lasinio模型研究重子质量,提出多种改进方法并探讨其对核子质量的影响。

摘要:

通过双夸克-夸克方法求解Bethe-Salpeter方程,研究了八重态和十重态SU(3)重子。这项工作根据温度和重子密度估计了它们的质量,有或无异ospin对称性。提出了几种改进方法并进行了测试:处理不稳定重子区域、包括双夸克动量依赖性、能够不采用静态近似来建模重子、通过标量和轴向味成分描述八重态重子、使用Nambu和Jona-Lasinio双夸克传播子代替无结构的传播子。还研究了颜色超导性对核子质量的影响。某些提到的改进可以同时应用。强调了每种改进的优缺点。

英文摘要:

The octet and decuplet SU(3)f baryons are studied with the Polyakov, Nambu and Jona-Lasinio model, in a diquark-quark approach, via the resolution of the Bethe-Salpeter equation. This work includes estimations of their masses according to the temperature and the baryonic density, with or without the isospin symmetry. Several improvements of this modeling are proposed and tested: the treatment of the baryons unstable regime, the inclusion of the diquark momentum dependence, the possibility to model baryons without the static approximation, the description of the octet baryons via scalar and axial flavor components, the use of a Nambu and Jona-Lasinio diquark propagator instead of a structureless one. The effects of the color superconductivity on the nucleon mass are also investigated. Certain of the mentioned improvements can be applied simultaneously. The advantages and limitations of each of them are underlined.

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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