演化Glasma中的非微扰夸克产生与输运：WAGASHI事例产生器
Non-perturbative quark production and transport in the evolving glasma: the WAGASHI event generator
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中文总结 AI 辅助
研究人员开发WAGASHI模型，结合Glasma演化、输运及对产生，发现Glasma阶段产生大量夸克，为夸克-胶子等离子体早期平衡做贡献，还确定了不同碰撞系统的逐事例分布，为后续演化提供初始条件。
中文摘要 AI 辅助
我们研究相对论重离子碰撞最早的Glasma阶段中的非微扰夸克-反夸克对产生及后续夸克动力学。为此，我们开发了新模型WAGASHI（Wong进动各向异性Glasma与施温格产生初始条件），该模型结合经典Yang-Mills Glasma演化、Wong方程输运以及逐事例的施温格对产生。我们发现，在Glasma阶段已产生大量夸克，其数量可与最终强子产额相比，随后这些夸克经历显著的动量展宽和自旋随机化，表明其对夸克-胶子等离子体的早期平衡有重要贡献。我们还确定了LHC能量下Pb-Pb和O-O碰撞中重子数、电荷、奇异数及自旋极化的逐事例分布，发现较小的O-O系统中存在特别大的涨落。这些结果为夸克-胶子等离子体后续的流体动力学演化提供了动力学初始条件。
英文摘要
We study non-perturbative quark-antiquark pair production and the subsequent quark dynamics in the earliest glasma stage of relativistic heavy-ion collisions. For that, we develop a new model, WAGASHI (Wong-precessing Anisotropic Glasma And ScHwinger-produced Initial-conditions), which combines classical Yang-Mills glasma evolution, Wong-equation transport, and Schwinger pair production on an event-by-event basis. We find that a sizeable number of quarks, comparable to the final hadron yields, are produced already during the glasma stage and subsequently undergo substantial momentum broadening and spin randomization, suggesting a significant contribution toward the early equilibration of the quark-gluon plasma. We also determine the event-by-event distributions of baryon number, electric charge, strangeness, and spin polarization in Pb-Pb and O-O collisions at LHC energies, finding particularly large fluctuations in the smaller O-O system. These results provide dynamical initial conditions for the subsequent hydrodynamic evolution of the quark-gluon plasma.
