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arXiv 2103.08823nucl-thhep-ph
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同位旋非对称核物质中夸克凝聚的密度依赖性

Density dependence of the quark condensate in isospin-asymmetric nuclear matter

Stephan Hübsch, Daisuke Jido

摘要:

我们计算了夸克凝聚的密度依赖性以及它在同位旋非对称核物质的影响下是如何变化的。这是通过使用介质中手征微扰理论计算相关的费曼图来实现的。我们发现,夸克凝聚的绝对值减少核物质在正常的核密度约35%,与以前的模型无关的计算。我们还提出了一个定量估计的差异,上下夸克在介质凝聚。

英文摘要:

We compute the density dependence of the quark condensate and how it changes under the influence of isospin-asymmetric nuclear matter. This is achieved by the calculation of the relevant Feynman diagrams using in-medium chiral perturbation theory. We find that the absolute value of the quark condensate decreases in nuclear matter by around 35% at normal nuclear density, in agreement with previous model-independent calculations. We also present an quantitative estimation of the difference of up- and down quark in-medium condensates.

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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