XQCD 2019 (The 17th International Conference on QCD in Extreme Conditions)

First study of Nf=2+1+1 lattice QCD with physical domain-wall quarks at finite temperatures (Cancelled)

26 Jun 2019, 11:05

25m

134 (Bunkyo School Building, Tokyo Campus, University of Tsukuba)

Oral talk Session 10

Speaker

Prof. Ting-Wai Chiu (National Taiwan University)

Description

Using a GPU cluster consisting of 25 units of Nvidia DGX-1 (each unit having 8*V100 interconnected by the NVLink), TWQCD collaboration has generated the first gauge ensembles of $N_f=2+1+1$ lattice QCD with physical domain-wall quarks on the $L_x^3\times L_t={64}^3\times (6,8,10,12,16)$ lattices, in the temperature range $T\simeq 200-550$ MeV. The lattice spacing $a\sim 0.064$~fm ($La>4$ fm, and $M_{\pi }La>3$) and the physical bare quark masses ($m_{u/d}a=0.00125$, $m_{s}a=0.04$, $m_{c}a=0.55$) are determined with the zero temperature gauge ensemble resulting from the simulation of $N_f=2+1+1$ QCD on the ${64}^4$ lattice. In this talk, I will outline the HMC simulation and the generation of the gauge ensembles. Moreover, I will present the first physical results (e.g., topological susceptibility) extracting from these $N_f=2+1+1$ gauge ensembles with physical domain-wall quarks at finite temperatures.