论文标题
Gluon在Quark-Gluon等离子体中是否强烈耦合？理论家的测试
Are gluon showers inside a quark-gluon plasma strongly coupled? a theorist's test
论文作者
论文摘要
我们研究高能胶子中的中等淋浴是否可以视为单个分裂过程$ g {\ to} gg $的序列，或者在一个分裂末端和接下来的开始之间是否存在显着的量子重叠。考虑到Landau-Pomeranchuk-Migdal（LPM）效应，我们将这种重叠效应计算为高能量$α_ {\ rm s}（μ）$的领先顺序，以实现最简单的理论情况。我们研究了一种重叠效应的度量，该效果与物理学无关，该物理可以吸收到有效的值$ \ hat q _ {\ rm eff} $的Quenching参数$ \ hat q $。
We study whether in-medium showers of high-energy gluons can be treated as a sequence of individual splitting processes $g{\to}gg$, or whether there is significant quantum overlap between where one splitting ends and the next begins. Accounting for the Landau-Pomeranchuk-Migdal (LPM) effect, we calculate such overlap effects to leading order in high-energy $α_{\rm s}(μ)$ for the simplest theoretical situation. We investigate a measure of overlap effects that is independent of physics that can be absorbed into an effective value $\hat q_{\rm eff}$ of the jet-quenching parameter $\hat q$.
