论文标题
重夸克扩散系数随梯度流
Heavy quark diffusion coefficient with gradient flow
论文作者
论文摘要
我们以$ 1.5T_C $和$ 10^4 t_c $的QCD计算镀铬和铬磁相关器，目的是估计重型夸克质量扩张中的重夸克扩散系数，以$κ_e$ $κ_e$，以及最初质量抑制的Qurections $ brecturection $κ_B。我们使用梯度流量减少降噪。我们获得的价格为$ 1.5T_C $：$ 1.70 \leκ_e/t^3 \ le 3.12 $和$ 1.03 <κ_b/t^3 <2.61 $。后者意味着，在此温度下，底部夸克的重质量扩散系数的质量抑制作用为20％，魅力夸克的质量为34％。
We calculate chromo-electric and chromo-magnetic correlators in quenched QCD at $1.5T_c$ and $10^4 T_c$ with the aim to estimate the heavy quark diffusion coefficient at leading order in the inverse heavy quark mass expansion, $κ_E$, as well as the coefficient of first mass suppressed correction, $κ_B$. We use gradient flow for noise reduction. At $1.5T_c$ we obtain: $1.70 \le κ_E/T^3 \le 3.12$ and $1.03< κ_B/T^3 < 2.61$. The latter implies that the mass suppressed effects in the heavy quark diffusion coefficient are 20% for bottom quarks and 34% for charm quark at this temperature.
