论文标题
Light Quark回路对使用Dyson-Schwinger方程方法的Wigner阶段的影响
Influence of light quark loops on the Wigner phase with Dyson-Schwinger equations approach
论文作者
论文摘要
我们通过解决夸克传播剂和gluon传播器的偶联dyson-schinginger方程来研究光夸克回路对Wigner阶段的影响。我们从$ n_f $ = 2个未衡量的晶格QCD中将gluon传播器从NAMBU阶段中进行，并为Quark-Gluon顶点选择各种现象学模型。仅由于夸克环的真空极化，在边锋相中的gluon繁殖物被认为与NAMBU相中的传播剂不同。与仅求解夸克传播器的方程相比，我们获得了耦合方程的Wigner溶液。我们讨论了光夸克回路的校正以及对夸克 - 格鲁恩顶点的各种模型的依赖性。
We study the influence of light quark loops on the Wigner phase by solving coupled Dyson-Schwinger equations for quark propagator and gluon propagator. We take the gluon propagator in the Nambu phase from $N_f$ = 2 unquenched lattice QCD and choose various phenomenological models for the quark-gluon vertex. The gluon propagator in Winger phase is assumed to be different from that in the Nambu phase only due to the vacuum polarization of the quark loop. We obtain the Wigner solution of the coupled equations, compared with that from solving only the equation of the quark propagator. We discussed the corrections by the light quark loops and the dependence on various models of the quark-gluon vertex.
