猝灭格点SU中$\hat{q}$的估算（2）规范理论
Estimating $\hat{q}$ in Quenched Lattice SU(2) Gauge Theory
摘要：
研究了虚夸克在热介质中的传播。在无夸克SU（2）格点规范理论中估计了非微扰喷流输运系数$\hat{q}$。定义了$\hat{q}$的类光相关器，定义在射流与其能量相比具有小的虚拟性的区域中，与深欧几里德区域中的一系列局部算子解析相关，其中射流的虚拟性与其能量具有相同的量级。它表明，在这个区域中，温度范围为T=400-600 MeV，并为喷流能量超过20 GeV，在该系列中的领先项是占主导地位的下一个领先项，从而产生估计值的$\hat{q}$。在这些会议记录中，我们讨论了数值计算的细节。
英文摘要：
The propagation of a virtual quark in a thermal medium is considered. The non-perturbative jet transport coefficient $\hat{q}$ is estimated in quark less SU(2) lattice gauge theory. The light like correlator which defines $\hat{q}$, defined in the regime where the jet has small virtuality compared to its energy, is analytically related to a series of local operators in the deep Euclidean region, where the jet's virtuality is of the same order as its energy. It is demonstrated that in this region, for temperatures in the range of T=400-600 MeV, and for jet energies above 20 GeV, the leading term in the series is dominant over the next-to-leading term and thus yields an estimate of the value of $\hat{q}$. In these proceedings we discuss the details of the numerical calculation.
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