论文标题
QCD的手性相结构和临界终点
Chiral phase structure and critical end point in QCD
论文作者
论文摘要
我们在有限温度和2频flavour QCD的有限温度和化学潜力下绘制QCD相结构。这是在ARXIV：2002.07500 [HEP-PH]中提出的广义功能方法中完成的。具体而言，我们根据真空相关函数的精确数据来计算Gluon繁殖器和夸克 - 胶状顶点的夸克传播器和夸克 - 杜伦顶点的有限温度波动。与普通使用STI启发的顶点相反，新颖的成分是DSE的DSE的直接自洽计算，与普遍使用STI启发的顶点相反。 对于小密度，手性订单参数的结果与各自的晶格和功能性重态化组结果一致，对于大密度，目前的结果与后者有定量一致，包括临界终点的位置。
We map out the QCD phase structure at finite temperature and chemical potential for 2-flavour and 2 + 1-flavour QCD. This is done within a generalised functional approach to QCD put forward in arXiv:2002.07500 [hep-ph]. Specifically we compute the quark propagator and the finite-temperature and density fluctuations of the gluon propagator and the quark-gluon vertex on the basis of precision data for vacuum correlation functions. The novel ingredient is the direct self-consistent computation of the DSEs for the dressings of the quark-gluon vertex, in contrast to the common use of STI-inspired vertices. For small densities the results for the chiral order parameter agree with the respective lattice and functional renormalisation group results, for large densities the present results are in a quantitative agreement with the latter, including the location of the critical end point.
