标题： 夸克偶素在弱耦合和强耦合等离子体中的输运 显示英文标题

标题： Quarkonium transport in weakly and strongly coupled plasmas

摘要： 我们报告了关于理解热等离子体内夸克偶素动力学非微扰进展的情况。 小尺寸夸克偶素的时间演化由带有伴奏的色电场的两点关联函数控制，在此上下文中称为广义胶子分布（GGDs）。 GGDs 已经通过微扰和全息方法在弱耦合和强耦合等离子体中被计算出来。 令人惊讶的是，我们的计算结果显示，在假设夸克偶素经历马尔可夫动力学的输运描述中，强耦合等离子体中的夸克偶素解离和重组率消失。 然而，这并不意味着动力学是平凡的。 作为探索强耦合结果的实验后果的起点，我们展示了时间相关微扰理论中$\Upsilon(1S)$形成概率的计算。 这是朝着开发一种包括非马尔可夫效应的输运形式迈出了第一步，这些效应可能在RHIC和LHC产生的夸克-胶子等离子体中主导马尔可夫效应，这取决于尚未确定的非微扰QCD结果与强耦合$\mathcal{N}=4$SYM 结果的接近程度。 显示英文摘要

摘要： We report on progress in the nonperturbative understanding of quarkonium dynamics inside a thermal plasma. The time evolution of small-size quarkonium is governed by two-point correlation functions of chromoelectric fields dressed with an adjoint Wilson line, known in this context as generalized gluon distributions (GGDs). The GGDs have been calculated in both weakly and strongly coupled plasmas by using perturbative and holographic methods. Strikingly, the results of our calculations for a strongly coupled plasma indicate that the quarkonium dissociation and recombination rates vanish in the transport descriptions that assume quarkonium undergoes Markovian dynamics. However, this does not imply that the dynamics is trivial. As a starting point to explore the phenomenological consequences of the result at strong coupling, we show a calculation of the $\Upsilon(1S)$ formation probability in time-dependent perturbation theory. This is a first step towards the development of a transport formalism that includes non-Markovian effects, which, depending on how close the as of yet undetermined nonperturbative QCD result of the GGDs is to the strongly coupled $\mathcal{N}=4$ SYM result, could very well dominate over the Markovian ones in quark-gluon plasma produced at RHIC and the LHC.