First study of Nf=2+1+1 lattice QCD with physical domain-wall quarks

Ting-Wai Chiu 2020 PoS LATTICE 2019 (2020) 133

arXiv: 2002.06126

Using 10-16 units of Nvidia DGX-1, we have generated the first gauge ensemble for Nf=2+1+1 lattice QCD with physical (u/d,s,c) domain-wall quarks, on the 644 lattice with lattice spacing a∼0.064 fm (L>4 fm, and MπL>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.