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arXiv 2005.04181nucl-thhep-ph
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模型夸克传播子谱密度的提取

Extracting a model quark propagator's spectral density

Zehao Zhu, Khépani Raya, Lei Chang

摘要:

我们提出了一个实用的方法来外推类空夸克传播子到复平面上,它遵循Schlessinger点方法和传播子的谱表示。作为一个可行的例子,我们采用不同口味的夸克传播子,从相应的戴森-Schwinger方程(DSE)的解决方案。采用两种不同的截断。因此,夸克传播子的分析结构进行了研究,利用当前夸克质量的观测功能的依赖性。

英文摘要:

We propose a practical procedure to extrapolate the space-like quark propagator onto the complex plane, which follows the Schlessinger Point Method and the spectral representation of the propagator. As a feasible example, we employ quark propagators for different flavors, obtained from the solutions of the corresponding Dyson-Schwinger equation (DSE). Two different truncations are employed. Thus, the analytical structure of the quark propagator is studied, capitalizing on the current-quark mass dependence of the observed features.

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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