论文标题
通过交错的费米子光谱投影仪在高温下的QCD拓扑敏感性
The QCD topological susceptibility at high temperatures via staggered fermions spectral projectors
论文作者
论文摘要
QCD拓扑可观察物是获得有关轴突现象学的理论预测的必要输入，这对于该粒子的当前和未来实验搜索至关重要。其中，我们专注于与轴突质量有关的拓扑敏感性。我们在高温下通过光谱投影仪在交错的dirac操作员的特征码上分配可观察到的QCD的拓扑敏感性呈现了晶格结果，我们将它们与用标准Gluonic定义获得的那些进行比较。光谱离散化的采用是由影响标准Gluonic易感性的大型晶格伪像，这与晶格作用中的非手续费米子的选择有关。
The QCD topological observables are essential inputs to obtain theoretical predictions about axion phenomenology, which are of utmost importance for current and future experimental searches for this particle. Among them, we focus on the topological susceptibility, related to the axion mass. We present lattice results for the topological susceptibility in QCD at high temperatures obtained by discretizing this observable via spectral projectors on eigenmodes of the staggered Dirac operator, and we compare them with those obtained with the standard gluonic definition. The adoption of the spectral discretization is motivated by the large lattice artifacts affecting the standard gluonic susceptibility, related to the choice of non-chiral fermions in the lattice action.
