论文标题
重夸克扩散系数的晶格QCD约束
Lattice QCD constraints on the heavy quark diffusion coefficient
论文作者
论文摘要
我们报告了从两个纯SU（3）仪表理论中的Polyakov环连接到polyakov环的两个铬电场的相关器中计算重量夸克动量扩散系数的进展。使用多级算法和树级改进，我们研究了扩散系数作为温度在宽范围内的函数$ 1.1 <t_c <10^4 $的函数，以将其与高温下的扰动扩张进行比较。我们发现在误差中，晶格结果与近代领先的顺序扰动结果非常兼容。
We report progress towards computing the heavy quark momentum diffusion coefficient from the correlator of two chromo-electric fields attached to a Polyakov loop in pure SU(3) gauge theory. Using a multilevel algorithm and tree-level improvement, we study the behavior of the diffusion coefficient as a function of temperature in the wide range $1.1 < T / T_c < 10^4$ in order to compare it to perturbative expansions at high temperature. We find that within errors the lattice results are remarkably compatible with the next-to-leading order perturbative result.
