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引用次数: 2
摘要
使用10-16个Nvidia DGX-1单元，我们在$ 64^4 $晶格上以晶格间距$a \sim 0.064 $ fm ($ L > 4 $ fm和$ M_\pi L > 3 $)生成了具有物理$(u/d, s, c)$畴壁夸克的$N_f=2+1+1$晶格QCD的第一个规范系综。该规范系综的显著特点是手性对称性保持了很高的精度，并且所有的拓扑扇区都是遍历采样的。在本文中，我们给出了拓扑磁化率和基态强子质量谱的第一个结果。
First study of $N_f=2+1+1$ lattice QCD with physical domain-wall quarks
Using 10-16 units of Nvidia DGX-1, we have generated the first gauge ensemble for $N_f=2+1+1$ lattice QCD with physical $(u/d, s, c)$ domain-wall quarks, on the $ 64^4 $ lattice with lattice spacing $a \sim 0.064 $ fm ($ L > 4 $ fm, and $ M_\pi L > 3 $). The salient feature of this gauge ensemble is that the chiral symmetry is preserved to a high precision and all topological sectors are sampled ergodically. In this paper, we present the first results of the topological susceptibility and the ground-state hadron mass spectra.
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