标题： 夸克质量和$μ$的 QCD 手征临界点依赖性 显示英文标题

标题： The quark mass and $μ$ dependence of the QCD chiral critical point

摘要： 为了研究QCD手征临界点，我们研究了手征凝聚的Binder累积量。 结果来自于标准交错费米子的3种和2+1种味以及p4改进交错费米子的3种味的模拟。 使用的夸克质量接近物理夸克质量。 为了提取夸克质量与化学势的依赖关系，我们应用了一种基于作用量泰勒展开的新重加权技术。 重加权精度为标准的${\cal O}(m)$，p4作用量的为${\cal O}(m^2)$，${\cal O}(\mu^2)$。 显示英文摘要

摘要： In order to study the QCD chiral critical point we investigate Binder Cumulants of the chiral condensate. The results were obtained from simulations of 3 and 2+1 flavors of standard staggered fermions and 3 flavors of p4 improved staggered fermions. The quark masses used are close to the physical quark mass. To extract the dependence on quark mass and chemical potential we apply a new reweighting technique based on a Taylor expansion of the action. The reweighting accuracy is ${\cal O}(m)$ for the standard and ${\cal O}(m^2)$, ${\cal O}(\mu^2)$ for the p4 action.