论文标题
各向异性动量在2+1d Glasma中扩大：分析弱场近似和晶格模拟
Anisotropic momentum broadening in the 2+1D Glasma: analytic weak field approximation and lattice simulations
论文作者
论文摘要
在重离子碰撞中，横向动量扩大量量化了由于与夸克 - 粘液血浆（QGP）相互作用而导致的硬探针的修饰。我们计算Glasma中的动量扩展，GLASMA是碰撞后QGP的高度非异分前体阶段。我们表明，GLASMA导致各向异性动量扩大：高能量参与者沿着梁轴积累了更多的动量，而不是横向上。各向异性拓宽的物理起源可以追溯到glasma中染色体和铬磁管的形状差异。我们提供了半分析结果，可通过实时晶格模拟非扰动致密性Glasma的实时晶格模拟来扩大稀释的Glasma和数值结果。
In heavy ion collisions, transverse momentum broadening quantifies the modification of a hard probe due to interactions with the quark-gluon plasma (QGP). We calculate momentum broadening in the Glasma, which is the highly non-isotropic precursor stage of the QGP right after the collision. We show that the Glasma leads to anisotropic momentum broadening: high energy partons accumulate more momentum along the beam axis than transverse to it. The physical origin of anisotropic broadening can be traced back to differences in the shapes of chromo-electric and chromo-magnetic flux tubes in the Glasma. We provide semi-analytic results for momentum broadening in the dilute Glasma and numerical results from real-time lattice simulations of the non-perturbative dense Glasma.
