论文标题
功能方法的QCD相结构
QCD phase structure from functional methods
论文作者
论文摘要
我们在有限温度和化学潜力下以$ 2 $ -Flavour和$ 2+1 $ -Flavour QCD讨论QCD相结构。通过在结合Dyson-Schwinger方程（DSE）和功能重重程化组（FRG）的广义功能方法中计算QCD相关函数来实现结果。在此设置中，来自ARXIV的FRG精度数据：1706.06326，用于真空夸克 - 格鲁恩顶点和Gluon Expagator $ 2 $ -Flavour QCD用作输入，并且相应的DSE扩展了有关此输入的。尽管其他相关函数的真空结果是功能方法的自洽检查，但第一次计算有限温度和密度下的结果，而无需现象学红外参数。
We discuss the QCD phase structure at finite temperature and chemical potential for $2$-flavour and $2+1$-flavour QCD. The results are achieved by computing QCD correlation functions within a generalised functional approach that combines Dyson-Schwinger equations (DSE) and the functional renormalisation group (fRG). In this setup fRG precision data from arXiv:1706.06326 for the vacuum quark-gluon vertex and gluon propagator of $2$-flavour QCD are used as input, and the respective DSEs are expanded about this input. While the vacuum results for other correlation functions serve as a self-consistency check for functional approaches, the results at finite temperature and density are computed, for the first time, without the need of phenomenological infrared parameters.
