arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1811.08095hep-lathep-ph
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(u,d,s,c)畴壁/重叠夸克在物理点的动力学模拟

Simulation of dynamical (u,d,s,c) domain-wall/overlap quarks at the physical point

Ting-Wai Chiu

摘要:

我们在物理点上对含有畴壁夸克的$N_f=2+1+1 $格点QCD进行了混合蒙特卡罗模拟。使用Nvidia DGX-1(通过NVLink互连的8个V100 GPU),在具有晶格间距$a \sim 0.064 $ fm($ L > 4 $ fm和$ M_πL > 3 $)的$ L^3 \times T = 64^3 \times 64 $晶格上进行模拟。为了在第五维中获得有限范围的最大手征对称性($N_s=16$),我们对夸克作用量采用最佳畴壁费米子,对畴壁费米子采用精确的单味作用量.我们概述了我们的模拟的显着特点(没有拓扑冻结,和小的剩余质量),连同初步结果的质量的$ π^\pm $,$ K^\pm $,和$ D^\pm $。

英文摘要:

We perform hybrid Monte-Carlo simulation of $N_f=2+1+1 $ lattice QCD with domain-wall quarks at the physical point. The simulation is carried out on the $ L^3 \times T = 64^3 \times 64 $ lattice with lattice spacing $a \sim 0.064 $ fm ($ L > 4 $ fm, and $ M_πL > 3 $), using the Nvidia DGX-1 (8 V100 GPUs interconnected by the NVLink). To attain the maximal chiral symmetry for a finite extent ($N_s=16$) in the fifth dimension, we use the optimal domain-wall fermion for the quark action, together with the exact one-flavor action for domain-wall fermion. We outline the salient features of our simulation (without topology freezing, and small residual mass), together with the preliminary result of the masses of $ π^\pm $, $ K^\pm $, and $ D^\pm $.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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