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arXiv 1610.02936hep-ph
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用Dyson-Schwinger方法研究具有电弱相互作用的夸克粒子

Quark Propagator with electroweak interactions in the Dyson-Schwinger approach

Walid Ahmed Mian, Axel Maas

摘要:

基于中子星并合过程中电弱相互作用与强相互作用之间不可忽略的动力学后耦合,我们研究了C、P和味对称性的显破缺对强扇形的影响.夸克传播子是最简单的对象,它编码了这些断裂的结果。为了评估这种影响,我们研究了特别是宇称破坏对各种质量的传播子的影响。为此,采用Dyson-Schwinger方程形式的泛函方法。我们发现,显式同位旋破缺导致的行为,即使是轻微的显式破缺,这是从微扰理论的预期相反的一个质的变化。因此,我们的研究结果表明,非微扰反馈耦合效应可能比预期的要大。

英文摘要:

Motivated by the non-negligible dynamical backcoupling of the electroweak interactions with the strong interaction during neutron star mergers, we study the effects of the explicit breaking of C, P and flavor symmetry on the strong sector. The quark propagator is the simplest object which encodes the consequences of these breakings. To asses the impact, we study the influence of especially parity violation on the propagator for various masses. For this purpose the functional methods in form of Dyson-Schwinger-Equations are employed. We find that explicit isospin breaking leads to a qualitative change of behavior even for a slight explicit breaking, which is in contrast to the expectations from perturbation theory. Our results thus suggest that non-perturbative backcoupling effects could be larger than expected.

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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